Search Results

Search found 5278 results on 212 pages for 'fedora 18'.

Page 66/212 | < Previous Page | 62 63 64 65 66 67 68 69 70 71 72 73  | Next Page >

  • Messed up partitions... system will not boot!

    - by someguy
    I did a really dumb thing. cfdisk threw an error at me saying "FATAL ERROR: Bad primary partition 3: Partition ends in the final partial cylinder", so I installed Partition Table Doctor to see if I could fix the problem. When the program started up, it told me there were problems with my partitions, and asked if I wanted them fixed (cannot remember real message, but I believe it had something to do with the cylinder boundaries), so, blindly, without thinking of the consequences, I did. Now, my system will not boot. I tried booting from the Windows 7 installation CD. I went to install a fresh copy, but it said that "No drives were found". I then opened up diskpart. According to diskpart, there is only one partition, containing one volume, assigned the letter "C". Before, I had four partitions! It is also saying that the file system is RAW. Is there any way I can fix this? I have important data that I do not want to lose. Later on... I tried fdisk with the option -l, which lists the partition table(s), and this is what I got: Ignoring extra extended partition 4 Disk /dev/sda: 250.1 GB, 250059350016 bytes 255 heads, 64 sectors/track, 30401 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x163df116 Device Boot Start End Blocks Id System /dev/sda1 6 18 102400 7 HPFS/NTFS Partition 1 does not end on cylinder boundary. /dev/sda2 18 7851 62918572+ 7 HPFS/NTFS /dev/sda3 13073 30402 139196416 f W95 Ext'd (LBA) /dev/sda3 13073 30402 139196416 f W95 Ext'd (LBA) /dev/sda3 13073 30403 139203193 7 HPFS/NTFS I don't know if this will help, but it's extra information, at least. Also, this is how I had my partitions: 40MB (Unallocated) 100MB (System Reserved) 60GB (Windows, C:) 40GB (Was reserved for secondary OS) ~132GB (Home, E:)

    Read the article

  • Slow manipulation of netfilter rules

    - by Ole Martin Eide
    I have a script maintaining gre tunnels and firewall rules using the "ip" and "iptables" tools. Setting up hundreds of tunnels, and adresses per interface runs just fine. Takes less than 0.1 second per interface, however when I get around to do the firewall rules everything slows down spending 0.5 per insertion. Why is it running so slow? What can I do to improve the speed? It seems like I could try ipset instead, but I really feel there is something wrong with the kernel or something. The interesting thing is that the first 10 rules runs fast, then it slows down.. mybox(root) foo# iptables -V iptables v1.3.5 mybox(root) foo# uname -a Linux foo 2.6.18-164.el5 #1 SMP Tue Aug 18 15:51:48 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux mybox(root) foo# cat test.sh #!/bin/sh for n in {1..100} do /sbin/iptables -A OUTPUT -s ${n} -j ACCEPT /sbin/iptables -D OUTPUT -s ${n} -j ACCEPT done mybox(root) foo# time ./test.sh real 1m38.839s user 0m0.100s sys 1m38.724s Appriciate any help. Cheers!

    Read the article

  • GitHub - commit local changes in local branch to remote branch

    - by user62046
    I use Git Shell in Windows 7, working in a branch named Save-Rotation. Then I used git push origin Save-Rotation to commit the changes to remote. The result is posted at the end. It seems good. But when I went to my repository in GitHub site, which is https://github.com/chiapas/sumatrapdf/tree/Save-Rotation I can't see any change in the repository tree or commit tree. How can I know if the commit (to remote) is successful, and why the repository page is not updated? Here is the result in command-line C:\Users\imo\Documents\GitHub\sumatrapdf [Save-Rotation]> git push origin Save-R otation Counting objects: 167, done. Delta compression using up to 8 threads. Compressing objects: 100% (18/18), done. Writing objects: 100% (119/119), 27.43 KiB, done. Total 119 (delta 101), reused 119 (delta 101) To https://github.com/chiapas/sumatrapdf * [new branch] Save-Rotation -> Save-Rotation C:\Users\imo\Documents\GitHub\sumatrapdf [Save-Rotation +2 ~17 -0 !]> git push o rigin Save-Rotation Everything up-to-date C:\Users\imo\Documents\GitHub\sumatrapdf [Save-Rotation +2 ~17 -0 !]>

    Read the article

  • Why does GIMP start up so slow on my machine?

    - by muntoo
    EDIT 2: One way would be to disable script-fu. Does anyone know how to disable it at startup? Is it possible? Would GIMP still work? What wouldn't work? Could I start it later, after loading? Is there any way to speed up GIMP's startup time on Windows Vista Home Premium 32-Bit 1.6 [Dual] Intel Processors? On XP [different computer], it loads in less than 3 seconds. On Vista, it takes 20 seconds: 2 Seconds (other - fonts, brushes, etc) 18 Seconds (extension-script-fu) It just freezes at extension-script-fu. Looking at Process Explorer, I see that it's not taking any CPU at all. EDIT 1: It does seem to be taking 50% of the CPU. It gets stuck for about 18 seconds, and then starts working again. Then, the actual GIMP program pops up [...finally]. I have the latest stable version running (I think). I tried it with XP SP2 Compatibiliy mode and/or Run As Administrator, but that didn't help.

    Read the article

  • How to Set Up an SMTP Submission Server on Linux

    - by Kevin Cox
    I was trying to set up a mail server with no luck. I want it to accept mail from authenticated users only and deliver them. I want the users to be able to connect over the internet. Ideally the mail server wouldn't accept any incoming mail. Essentially I want it to accept messages on a receiving port and transfer them to the intended recipient out port 25. If anyone has some good links and guides that would be awesome. I am quite familiar with linux but have never played around with MTA's and am currently running debian 6. More Specific Problem! Sorry, that was general and postfix is complex. I am having trouble enabling the submission port with encryption and authentication. What Works: Sending mail from the local machine. (sendmail [email protected]). Ports are open. (25 and 587) Connecting to 587 appears to work, I get a "need to starttls" warning and starttls appears to work. But when I try to connect with the next command I get the error below. # openssl s_client -connect localhost:587 -starttls smtp CONNECTED(00000003) depth=0 /CN=localhost.localdomain verify error:num=18:self signed certificate verify return:1 depth=0 /CN=localhost.localdomain verify return:1 --- Certificate chain 0 s:/CN=localhost.localdomain i:/CN=localhost.localdomain --- Server certificate -----BEGIN CERTIFICATE----- MIICvDCCAaQCCQCYHnCzLRUoMTANBgkqhkiG9w0BAQUFADAgMR4wHAYDVQQDExVs b2NhbGhvc3QubG9jYWxkb21haW4wHhcNMTIwMjE3MTMxOTA1WhcNMjIwMjE0MTMx OTA1WjAgMR4wHAYDVQQDExVsb2NhbGhvc3QubG9jYWxkb21haW4wggEiMA0GCSqG SIb3DQEBAQUAA4IBDwAwggEKAoIBAQDEFA/S6VhJihP6OGYrhEtL+SchWxPZGbgb VkgNJ6xK2dhR7hZXKcDtNddL3uf1YYWF76efS5oJPPjLb33NbHBb9imuD8PoynXN isz1oQEbzPE/07VC4srbsNIN92lldbRruDfjDrAbC/H+FBSUA2ImHvzc3xhIjdsb AbHasG1XBm8SkYULVedaD7I7YbnloCx0sTQgCM0Vjx29TXxPrpkcl6usjcQfZHqY ozg8X48Xm7F9CDip35Q+WwfZ6AcEkq9rJUOoZWrLWVcKusuYPCtUb6MdsZEH13IQ rA0+x8fUI3S0fW5xWWG0b4c5IxuM+eXz05DvB7mLyd+2+RwDAx2LAgMBAAEwDQYJ KoZIhvcNAQEFBQADggEBAAj1ib4lX28FhYdWv/RsHoGGFqf933SDipffBPM6Wlr0 jUn7wler7ilP65WVlTxDW+8PhdBmOrLUr0DO470AAS5uUOjdsPgGO+7VE/4/BN+/ naXVDzIcwyaiLbODIdG2s363V7gzibIuKUqOJ7oRLkwtxubt4D0CQN/7GNFY8cL2 in6FrYGDMNY+ve1tqPkukqQnes3DCeEo0+2KMGuwaJRQK3Es9WHotyrjrecPY170 dhDiLz4XaHU7xZwArAhMq/fay87liHvXR860tWq30oSb5DHQf4EloCQK4eJZQtFT B3xUDu7eFuCeXxjm4294YIPoWl5pbrP9vzLYAH+8ufE= -----END CERTIFICATE----- subject=/CN=localhost.localdomain issuer=/CN=localhost.localdomain --- No client certificate CA names sent --- SSL handshake has read 1605 bytes and written 354 bytes --- New, TLSv1/SSLv3, Cipher is DHE-RSA-AES256-SHA Server public key is 2048 bit Secure Renegotiation IS supported Compression: NONE Expansion: NONE SSL-Session: Protocol : TLSv1 Cipher : DHE-RSA-AES256-SHA Session-ID: E07926641A5EF22B15EB1D0E03FFF75588AB6464702CF4DC2166FFDAC1CA73E2 Session-ID-ctx: Master-Key: 454E8D5D40380DB3A73336775D6911B3DA289E4A1C9587DDC168EC09C2C3457CB30321E44CAD6AE65A66BAE9F33959A9 Key-Arg : None Start Time: 1349059796 Timeout : 300 (sec) Verify return code: 18 (self signed certificate) --- 250 DSN read:errno=0 If I try to connect from evolution I get the following error: The reported error was "HELO command failed: TCP connection reset by peer".

    Read the article

  • Linux CentOS strange memory readings

    - by user2008937
    I am actually a young junior sys admin. I have a question - i am trying to understand how linux deals with memory... while playing around different monitoring programs I found some strange thing. When I run top on my laptop it shows me that FIREFOX process with pid 8778 takes 18,3% of memory (%MEM column). grep "MemTotal" /proc/meminfo Above command give me 1848336kb/1024 = 1805megs of memory (its ok - i have 2 gigs of ram). So if the firefox process takes 18,3% of MEM(according to tops %MEM column) then it takes 0.183 * 1805 which is approximately 325mb of memory. Quite a lot as for firefox... But well, in Linux there are lots of shared libraries that programs commonly uses (like famous libc). And those libraries are added to memory utilization of every process that uses it in the system, despite they are actually reading same file(single object in memory). So top may show too big mem utilization because of those shared libraries. Well, it is time to use PMAP which should show us the real mem utilization of process. But.. pmap -d $(pidof firefox) mapped: 983460K writeable/private: 757164K shared: 66416K so pmap shows that 983460/1024=993MB of memory is mapped to this process. It is in fact much bigger than mem utilization showed by top. Whats wrong here? How pmap can show more than top? even when top adds also the shared libraries (which in fact are single objects in memory) for each process that uses it? and pmap omits it? Regards Krzysztof

    Read the article

  • How to delete removed devices from a mdadm RAID1?

    - by Kabuto
    I had to replace two hard drives in my RAID1. After adding the two new partitions the old ones are still showing up as removed while the new ones are only added as spare. I've had no luck removing the partitions marked as removed. Here's the RAID in question. Note the two devices (0 and 1) with state removed. $ mdadm --detail /dev/md1 mdadm: metadata format 00.90 unknown, ignored. mdadm: metadata format 00.90 unknown, ignored. /dev/md1: Version : 00.90 Creation Time : Thu May 20 12:32:25 2010 Raid Level : raid1 Array Size : 1454645504 (1387.26 GiB 1489.56 GB) Used Dev Size : 1454645504 (1387.26 GiB 1489.56 GB) Raid Devices : 3 Total Devices : 3 Preferred Minor : 1 Persistence : Superblock is persistent Update Time : Tue Nov 12 21:30:39 2013 State : clean, degraded Active Devices : 1 Working Devices : 3 Failed Devices : 0 Spare Devices : 2 UUID : 10d7d9be:a8a50b8e:788182fa:2238f1e4 Events : 0.8717546 Number Major Minor RaidDevice State 0 0 0 0 removed 1 0 0 1 removed 2 8 34 2 active sync /dev/sdc2 3 8 18 - spare /dev/sdb2 4 8 2 - spare /dev/sda2 How do I get rid of these devices and add the new partitions as active RAID devices? Update I seem to have gotten rid of them. My RAID is resyncing, but the two drives are still marked as spares and are number 3 and 4, which looks wrong. I'll have to wait for the resync to finish. All I did was to fix the metadata error by editing my mdadm.conf and rebooting. I tried rebooting before, but this time it worked for whatever reason. Number Major Minor RaidDevice State 3 8 2 0 spare rebuilding /dev/sda2 4 8 18 1 spare rebuilding /dev/sdb2 2 8 34 2 active sync /dev/sdc2

    Read the article

  • "Permission denied" & 500 Internal Server error serving PHP in Mac OS X

    - by Abhic
    I just set up Web Sharing in Mac OS X 10.6.2 Snow Leopard. My httpd.conf allows for ExecCGI and all the folders and files are readable by everybody and even writable by me. I put a simple Hello World in index.php in my base site and yet my apache error log shows this: [Thu Mar 18 00:17:18 2010] [error] [client 192.168.11.135] (13)Permission denied: exec of '/Users/abhic/Sites/index.php' failed [Thu Mar 18 00:17:18 2010] [error] [client 192.168.11.135] Premature end of script headers: index.php <html> <head> <title> Hello </title> </head> <body> <?php echo "Hello"; ?> </body> </html> is what my index.php looks like placed in /Users/abhic/Sites My browser shows a 500 Internal Server Error Any help would do me good in the middle of the night. I have been trying to solve this for way too long. Thank you.

    Read the article

  • Atheros Wireless card shows up as two different models?

    - by geermc4
    Hi I've been fighting these wireless drivers for a few days and just recently i noticed that the model the Wireless controller appears in lspci is different sometimes. This is the data i have after installing Ubuntu Server 64 bit ~# lspci -k .... 04:00.0 Network controller: Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) (rev 01) Subsystem: AzureWave Device 1d89 Kernel driver in use: ath9k Kernel modules: ath9k ran some updates, restarted, all was good, all though it did say that linux-headers-server linux-image-server linux-server where beeing kept back. After that i installed ubuntu-desktop (aptitude install ubuntu-desktop --without-recommends) restarted and not only is the wireless not working anymore, but the hardware is listed as a different card ~# lspci -k .... 04:00.0 Ethernet controller: Atheros Communications Inc. AR5008 Wireless Network Adapter (rev 01) has no available drivers for it, still i tried to modprobe ath9k, they show up in lsmod as loaded, but still iw list shows nothing. this is what it looked like before the ubuntu-desktop instalation Wiphy phy0 Band 1: Capabilities: 0x11ce HT20/HT40 SM Power Save disabled RX HT40 SGI TX STBC RX STBC 1-stream Max AMSDU length: 3839 bytes DSSS/CCK HT40 Maximum RX AMPDU length 65535 bytes (exponent: 0x003) Minimum RX AMPDU time spacing: 8 usec (0x06) HT TX/RX MCS rate indexes supported: 0-7 Frequencies: * 2412 MHz [1] (14.0 dBm) * 2417 MHz [2] (15.0 dBm) * 2422 MHz [3] (15.0 dBm) * 2427 MHz [4] (15.0 dBm) * 2432 MHz [5] (15.0 dBm) * 2437 MHz [6] (15.0 dBm) * 2442 MHz [7] (15.0 dBm) * 2447 MHz [8] (15.0 dBm) * 2452 MHz [9] (15.0 dBm) * 2457 MHz [10] (15.0 dBm) * 2462 MHz [11] (15.0 dBm) * 2467 MHz [12] (15.0 dBm) (passive scanning) * 2472 MHz [13] (14.0 dBm) (passive scanning) * 2484 MHz [14] (17.0 dBm) (passive scanning) Bitrates (non-HT): * 1.0 Mbps * 2.0 Mbps (short preamble supported) * 5.5 Mbps (short preamble supported) * 11.0 Mbps (short preamble supported) * 6.0 Mbps * 9.0 Mbps * 12.0 Mbps * 18.0 Mbps * 24.0 Mbps * 36.0 Mbps * 48.0 Mbps * 54.0 Mbps max # scan SSIDs: 4 max scan IEs length: 2257 bytes Coverage class: 0 (up to 0m) Supported Ciphers: * WEP40 (00-0f-ac:1) * WEP104 (00-0f-ac:5) * TKIP (00-0f-ac:2) * CCMP (00-0f-ac:4) * CMAC (00-0f-ac:6) Available Antennas: TX 0x1 RX 0x3 Configured Antennas: TX 0x1 RX 0x3 Supported interface modes: * IBSS * managed * AP * AP/VLAN * WDS * monitor * mesh point * P2P-client * P2P-GO software interface modes (can always be added): * AP/VLAN * monitor interface combinations are not supported Supported commands: * new_interface * set_interface * new_key * new_beacon * new_station * new_mpath * set_mesh_params * set_bss * authenticate * associate * deauthenticate * disassociate * join_ibss * join_mesh * remain_on_channel * set_tx_bitrate_mask * action * frame_wait_cancel * set_wiphy_netns * set_channel * set_wds_peer * connect * disconnect Supported TX frame types: * IBSS: 0x0000 0x0010 0x0020 0x0030 0x0040 0x0050 0x0060 0x0070 0x0080 0x0090 0x00a0 0x00b0 0x00c0 0x00d0 0x00e0 0x00f0 * managed: 0x0000 0x0010 0x0020 0x0030 0x0040 0x0050 0x0060 0x0070 0x0080 0x0090 0x00a0 0x00b0 0x00c0 0x00d0 0x00e0 0x00f0 * AP: 0x0000 0x0010 0x0020 0x0030 0x0040 0x0050 0x0060 0x0070 0x0080 0x0090 0x00a0 0x00b0 0x00c0 0x00d0 0x00e0 0x00f0 * AP/VLAN: 0x0000 0x0010 0x0020 0x0030 0x0040 0x0050 0x0060 0x0070 0x0080 0x0090 0x00a0 0x00b0 0x00c0 0x00d0 0x00e0 0x00f0 * mesh point: 0x0000 0x0010 0x0020 0x0030 0x0040 0x0050 0x0060 0x0070 0x0080 0x0090 0x00a0 0x00b0 0x00c0 0x00d0 0x00e0 0x00f0 * P2P-client: 0x0000 0x0010 0x0020 0x0030 0x0040 0x0050 0x0060 0x0070 0x0080 0x0090 0x00a0 0x00b0 0x00c0 0x00d0 0x00e0 0x00f0 * P2P-GO: 0x0000 0x0010 0x0020 0x0030 0x0040 0x0050 0x0060 0x0070 0x0080 0x0090 0x00a0 0x00b0 0x00c0 0x00d0 0x00e0 0x00f0 Supported RX frame types: * IBSS: 0x00d0 * managed: 0x0040 0x00d0 * AP: 0x0000 0x0020 0x0040 0x00a0 0x00b0 0x00c0 0x00d0 * AP/VLAN: 0x0000 0x0020 0x0040 0x00a0 0x00b0 0x00c0 0x00d0 * mesh point: 0x00b0 0x00c0 0x00d0 * P2P-client: 0x0040 0x00d0 * P2P-GO: 0x0000 0x0020 0x0040 0x00a0 0x00b0 0x00c0 0x00d0 Device supports RSN-IBSS. What's with the hardware change? If it has 2, how can i make the AR9285 always load and disable AR5008, or, is it the same and it's just showing it different? :| Oh and I've tried this on Ubuntu 10.04 server, xubuntu 12.04, ubuntu 12.04 desktop and server. Thanks in advanced. -- Here's some more info, i have it setup in 2 hard drives, 1 works and the other one i'm using to figure it out The one that works... # lshw -class network *-network description: Ethernet interface product: RTL8111/8168B PCI Express Gigabit Ethernet controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:03:00.0 logical name: eth0 version: 06 serial: 54:04:a6:a3:3b:96 size: 1Gbit/s capacity: 1Gbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl_nic/rtl8168e-2.fw ip=192.168.2.147 latency=0 link=yes multicast=yes port=MII speed=1Gbit/s resources: irq:43 ioport:e000(size=256) memory:d0004000-d0004fff memory:d0000000-d0003fff *-network description: Wireless interface product: AR9285 Wireless Network Adapter (PCI-Express) vendor: Atheros Communications Inc. physical id: 0 bus info: pci@0000:04:00.0 logical name: wlan0 version: 01 serial: 74:2f:68:4a:26:73 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=ath9k driverversion=3.2.0-18-generic-pae firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bgn resources: irq:18 memory:fea00000-fea0ffff Here's where it doesn't # lshw -class network *-network description: Ethernet interface product: RTL8111/8168B PCI Express Gigabit Ethernet controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:03:00.0 logical name: eth0 version: 06 serial: 54:04:a6:a3:3b:96 size: 1Gbit/s capacity: 1Gbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl_nic/rtl8168e-2.fw ip=192.168.2.160 latency=0 link=yes multicast=yes port=MII speed=1Gbit/s resources: irq:43 ioport:e000(size=256) memory:d0004000-d0004fff memory:d0000000-d0003fff *-network UNCLAIMED description: Ethernet controller product: AR5008 Wireless Network Adapter vendor: Atheros Communications Inc. physical id: 0 bus info: pci@0000:04:00.0 version: 01 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list configuration: latency=0 resources: memory:fea00000-fea0ffff Update I've noticed that if i blacklist the ath9k and ath9k_common modules lspci gives me the AR9285, but then I need to modprobe ath9k for it to work, does this make any sense? If so, why?

    Read the article

  • Bundler isn't loading gems

    - by Garrett
    I have been having a problem with using Bundler and being able to access my gems without having to require them somewhere, as config.gem used to do that for me (as far as I know). In my Rails 3 app, I defined my Gemfile like so: clear_sources source "http://gemcutter.org" source "http://gems.github.com" bundle_path "vendor/bundler_gems" ## Bundle edge rails: git "git://github.com/rails/arel.git" git "git://github.com/rails/rack.git" gem "rails", :git => "git://github.com/rails/rails.git" ## Bundle gem "mongo_mapper", :git => "git://github.com/jnunemaker/mongomapper.git" gem "bluecloth", ">= 2.0.0" Then I run gem bundle, it bundles it all up like expected. Inside the environment.rb file that is included within boot.rb it looks like this: # DO NOT MODIFY THIS FILE module Bundler file = File.expand_path(__FILE__) dir = File.dirname(file) ENV["PATH"] = "#{dir}/../../../../bin:#{ENV["PATH"]}" ENV["RUBYOPT"] = "-r#{file} #{ENV["RUBYOPT"]}" $LOAD_PATH.unshift File.expand_path("#{dir}/gems/builder-2.1.2/bin") $LOAD_PATH.unshift File.expand_path("#{dir}/gems/builder-2.1.2/lib") $LOAD_PATH.unshift File.expand_path("#{dir}/gems/text-hyphen-1.0.0/bin") $LOAD_PATH.unshift File.expand_path("#{dir}/gems/text-hyphen-1.0.0/lib") $LOAD_PATH.unshift File.expand_path("#{dir}/gems/i18n-0.3.3/bin") $LOAD_PATH.unshift File.expand_path("#{dir}/gems/i18n-0.3.3/lib") $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/arel/bin") $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/arel/lib") $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rails/activemodel/bin") $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rails/activemodel/lib") $LOAD_PATH.unshift File.expand_path("#{dir}/gems/jnunemaker-validatable-1.8.1/bin") $LOAD_PATH.unshift File.expand_path("#{dir}/gems/jnunemaker-validatable-1.8.1/lib") $LOAD_PATH.unshift File.expand_path("#{dir}/gems/abstract-1.0.0/bin") $LOAD_PATH.unshift File.expand_path("#{dir}/gems/abstract-1.0.0/lib") $LOAD_PATH.unshift File.expand_path("#{dir}/gems/erubis-2.6.5/bin") $LOAD_PATH.unshift File.expand_path("#{dir}/gems/erubis-2.6.5/lib") $LOAD_PATH.unshift File.expand_path("#{dir}/gems/mime-types-1.16/bin") $LOAD_PATH.unshift File.expand_path("#{dir}/gems/mime-types-1.16/lib") $LOAD_PATH.unshift File.expand_path("#{dir}/gems/mail-2.1.2/bin") $LOAD_PATH.unshift File.expand_path("#{dir}/gems/mail-2.1.2/lib") $LOAD_PATH.unshift File.expand_path("#{dir}/gems/rake-0.8.7/bin") $LOAD_PATH.unshift File.expand_path("#{dir}/gems/rake-0.8.7/lib") $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rails/railties/bin") $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rails/railties/lib") $LOAD_PATH.unshift File.expand_path("#{dir}/gems/memcache-client-1.7.7/bin") $LOAD_PATH.unshift File.expand_path("#{dir}/gems/memcache-client-1.7.7/lib") $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rack/bin") $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rack/lib") $LOAD_PATH.unshift File.expand_path("#{dir}/gems/rack-test-0.5.3/bin") $LOAD_PATH.unshift File.expand_path("#{dir}/gems/rack-test-0.5.3/lib") $LOAD_PATH.unshift File.expand_path("#{dir}/gems/rack-mount-0.4.5/bin") $LOAD_PATH.unshift File.expand_path("#{dir}/gems/rack-mount-0.4.5/lib") $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rails/actionpack/bin") $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rails/actionpack/lib") $LOAD_PATH.unshift File.expand_path("#{dir}/gems/bluecloth-2.0.7/bin") $LOAD_PATH.unshift File.expand_path("#{dir}/gems/bluecloth-2.0.7/lib") $LOAD_PATH.unshift File.expand_path("#{dir}/gems/bluecloth-2.0.7/ext") $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rails/activerecord/bin") $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rails/activerecord/lib") $LOAD_PATH.unshift File.expand_path("#{dir}/gems/text-format-1.0.0/bin") $LOAD_PATH.unshift File.expand_path("#{dir}/gems/text-format-1.0.0/lib") $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rails/actionmailer/bin") $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rails/actionmailer/lib") $LOAD_PATH.unshift File.expand_path("#{dir}/gems/tzinfo-0.3.16/bin") $LOAD_PATH.unshift File.expand_path("#{dir}/gems/tzinfo-0.3.16/lib") $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rails/activesupport/bin") $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rails/activesupport/lib") $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rails/activeresource/bin") $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rails/activeresource/lib") $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rails/bin") $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/rails/lib") $LOAD_PATH.unshift File.expand_path("#{dir}/gems/mongo-0.18.2/bin") $LOAD_PATH.unshift File.expand_path("#{dir}/gems/mongo-0.18.2/lib") $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/mongomapper/bin") $LOAD_PATH.unshift File.expand_path("#{dir}/dirs/mongomapper/lib") @gemfile = "#{dir}/../../../../Gemfile" require "rubygems" unless respond_to?(:gem) # 1.9 already has RubyGems loaded @bundled_specs = {} @bundled_specs["builder"] = eval(File.read("#{dir}/specifications/builder-2.1.2.gemspec")) @bundled_specs["builder"].loaded_from = "#{dir}/specifications/builder-2.1.2.gemspec" @bundled_specs["text-hyphen"] = eval(File.read("#{dir}/specifications/text-hyphen-1.0.0.gemspec")) @bundled_specs["text-hyphen"].loaded_from = "#{dir}/specifications/text-hyphen-1.0.0.gemspec" @bundled_specs["i18n"] = eval(File.read("#{dir}/specifications/i18n-0.3.3.gemspec")) @bundled_specs["i18n"].loaded_from = "#{dir}/specifications/i18n-0.3.3.gemspec" @bundled_specs["arel"] = eval(File.read("#{dir}/specifications/arel-0.2.pre.gemspec")) @bundled_specs["arel"].loaded_from = "#{dir}/specifications/arel-0.2.pre.gemspec" @bundled_specs["activemodel"] = eval(File.read("#{dir}/specifications/activemodel-3.0.pre.gemspec")) @bundled_specs["activemodel"].loaded_from = "#{dir}/specifications/activemodel-3.0.pre.gemspec" @bundled_specs["jnunemaker-validatable"] = eval(File.read("#{dir}/specifications/jnunemaker-validatable-1.8.1.gemspec")) @bundled_specs["jnunemaker-validatable"].loaded_from = "#{dir}/specifications/jnunemaker-validatable-1.8.1.gemspec" @bundled_specs["abstract"] = eval(File.read("#{dir}/specifications/abstract-1.0.0.gemspec")) @bundled_specs["abstract"].loaded_from = "#{dir}/specifications/abstract-1.0.0.gemspec" @bundled_specs["erubis"] = eval(File.read("#{dir}/specifications/erubis-2.6.5.gemspec")) @bundled_specs["erubis"].loaded_from = "#{dir}/specifications/erubis-2.6.5.gemspec" @bundled_specs["mime-types"] = eval(File.read("#{dir}/specifications/mime-types-1.16.gemspec")) @bundled_specs["mime-types"].loaded_from = "#{dir}/specifications/mime-types-1.16.gemspec" @bundled_specs["mail"] = eval(File.read("#{dir}/specifications/mail-2.1.2.gemspec")) @bundled_specs["mail"].loaded_from = "#{dir}/specifications/mail-2.1.2.gemspec" @bundled_specs["rake"] = eval(File.read("#{dir}/specifications/rake-0.8.7.gemspec")) @bundled_specs["rake"].loaded_from = "#{dir}/specifications/rake-0.8.7.gemspec" @bundled_specs["railties"] = eval(File.read("#{dir}/specifications/railties-3.0.pre.gemspec")) @bundled_specs["railties"].loaded_from = "#{dir}/specifications/railties-3.0.pre.gemspec" @bundled_specs["memcache-client"] = eval(File.read("#{dir}/specifications/memcache-client-1.7.7.gemspec")) @bundled_specs["memcache-client"].loaded_from = "#{dir}/specifications/memcache-client-1.7.7.gemspec" @bundled_specs["rack"] = eval(File.read("#{dir}/specifications/rack-1.1.0.gemspec")) @bundled_specs["rack"].loaded_from = "#{dir}/specifications/rack-1.1.0.gemspec" @bundled_specs["rack-test"] = eval(File.read("#{dir}/specifications/rack-test-0.5.3.gemspec")) @bundled_specs["rack-test"].loaded_from = "#{dir}/specifications/rack-test-0.5.3.gemspec" @bundled_specs["rack-mount"] = eval(File.read("#{dir}/specifications/rack-mount-0.4.5.gemspec")) @bundled_specs["rack-mount"].loaded_from = "#{dir}/specifications/rack-mount-0.4.5.gemspec" @bundled_specs["actionpack"] = eval(File.read("#{dir}/specifications/actionpack-3.0.pre.gemspec")) @bundled_specs["actionpack"].loaded_from = "#{dir}/specifications/actionpack-3.0.pre.gemspec" @bundled_specs["bluecloth"] = eval(File.read("#{dir}/specifications/bluecloth-2.0.7.gemspec")) @bundled_specs["bluecloth"].loaded_from = "#{dir}/specifications/bluecloth-2.0.7.gemspec" @bundled_specs["activerecord"] = eval(File.read("#{dir}/specifications/activerecord-3.0.pre.gemspec")) @bundled_specs["activerecord"].loaded_from = "#{dir}/specifications/activerecord-3.0.pre.gemspec" @bundled_specs["text-format"] = eval(File.read("#{dir}/specifications/text-format-1.0.0.gemspec")) @bundled_specs["text-format"].loaded_from = "#{dir}/specifications/text-format-1.0.0.gemspec" @bundled_specs["actionmailer"] = eval(File.read("#{dir}/specifications/actionmailer-3.0.pre.gemspec")) @bundled_specs["actionmailer"].loaded_from = "#{dir}/specifications/actionmailer-3.0.pre.gemspec" @bundled_specs["tzinfo"] = eval(File.read("#{dir}/specifications/tzinfo-0.3.16.gemspec")) @bundled_specs["tzinfo"].loaded_from = "#{dir}/specifications/tzinfo-0.3.16.gemspec" @bundled_specs["activesupport"] = eval(File.read("#{dir}/specifications/activesupport-3.0.pre.gemspec")) @bundled_specs["activesupport"].loaded_from = "#{dir}/specifications/activesupport-3.0.pre.gemspec" @bundled_specs["activeresource"] = eval(File.read("#{dir}/specifications/activeresource-3.0.pre.gemspec")) @bundled_specs["activeresource"].loaded_from = "#{dir}/specifications/activeresource-3.0.pre.gemspec" @bundled_specs["rails"] = eval(File.read("#{dir}/specifications/rails-3.0.pre.gemspec")) @bundled_specs["rails"].loaded_from = "#{dir}/specifications/rails-3.0.pre.gemspec" @bundled_specs["mongo"] = eval(File.read("#{dir}/specifications/mongo-0.18.2.gemspec")) @bundled_specs["mongo"].loaded_from = "#{dir}/specifications/mongo-0.18.2.gemspec" @bundled_specs["mongo_mapper"] = eval(File.read("#{dir}/specifications/mongo_mapper-0.6.10.gemspec")) @bundled_specs["mongo_mapper"].loaded_from = "#{dir}/specifications/mongo_mapper-0.6.10.gemspec" def self.add_specs_to_loaded_specs Gem.loaded_specs.merge! @bundled_specs end def self.add_specs_to_index @bundled_specs.each do |name, spec| Gem.source_index.add_spec spec end end add_specs_to_loaded_specs add_specs_to_index def self.require_env(env = nil) context = Class.new do def initialize(env) @env = env && env.to_s ; end def method_missing(*) ; yield if block_given? ; end def only(*env) old, @only = @only, _combine_only(env.flatten) yield @only = old end def except(*env) old, @except = @except, _combine_except(env.flatten) yield @except = old end def gem(name, *args) opt = args.last.is_a?(Hash) ? args.pop : {} only = _combine_only(opt[:only] || opt["only"]) except = _combine_except(opt[:except] || opt["except"]) files = opt[:require_as] || opt["require_as"] || name files = [files] unless files.respond_to?(:each) return unless !only || only.any? {|e| e == @env } return if except && except.any? {|e| e == @env } if files = opt[:require_as] || opt["require_as"] files = Array(files) files.each { |f| require f } else begin require name rescue LoadError # Do nothing end end yield if block_given? true end private def _combine_only(only) return @only unless only only = [only].flatten.compact.uniq.map { |o| o.to_s } only &= @only if @only only end def _combine_except(except) return @except unless except except = [except].flatten.compact.uniq.map { |o| o.to_s } except |= @except if @except except end end context.new(env && env.to_s).instance_eval(File.read(@gemfile), @gemfile, 1) end end module Gem @loaded_stacks = Hash.new { |h,k| h[k] = [] } def source_index.refresh! super Bundler.add_specs_to_index end end But when I try to access any of my gems, e.g. MongoMapper, Paperclip, Haml, etc. I get: NameError: uninitialized constant MongoMapper The same goes for any other gem. Does Bundler not include gems like the old Rails 2.0 did? Or is something messed up with my system? Any help would be appreciated, thank you!

    Read the article

  • Python - pickling fails for numpy.void objects

    - by I82Much
    >>> idmapfile = open("idmap", mode="w") >>> pickle.dump(idMap, idmapfile) >>> idmapfile.close() >>> idmapfile = open("idmap") >>> unpickled = pickle.load(idmapfile) >>> unpickled == idMap False idMap[1] {1537: (552, 1, 1537, 17.793827056884766, 3), 1540: (4220, 1, 1540, 19.31205940246582, 3), 1544: (592, 1, 1544, 18.129131317138672, 3), 1675: (529, 1, 1675, 18.347782135009766, 3), 1550: (4048, 1, 1550, 19.31205940246582, 3), 1424: (1528, 1, 1424, 19.744396209716797, 3), 1681: (1265, 1, 1681, 19.596025466918945, 3), 1560: (3457, 1, 1560, 20.530569076538086, 3), 1690: (477, 1, 1690, 17.395542144775391, 3), 1691: (554, 1, 1691, 13.446117401123047, 3), 1436: (3010, 1, 1436, 19.596025466918945, 3), 1434: (3183, 1, 1434, 19.744396209716797, 3), 1441: (3570, 1, 1441, 20.589576721191406, 3), 1435: (476, 1, 1435, 19.640911102294922, 3), 1444: (527, 1, 1444, 17.98480224609375, 3), 1478: (1897, 1, 1478, 19.596025466918945, 3), 1575: (614, 1, 1575, 19.371648788452148, 3), 1586: (2189, 1, 1586, 19.31205940246582, 3), 1716: (3470, 1, 1716, 19.158674240112305, 3), 1590: (2278, 1, 1590, 19.596025466918945, 3), 1463: (991, 1, 1463, 19.31205940246582, 3), 1594: (1890, 1, 1594, 19.596025466918945, 3), 1467: (1087, 1, 1467, 19.31205940246582, 3), 1596: (3759, 1, 1596, 19.744396209716797, 3), 1602: (3011, 1, 1602, 20.530569076538086, 3), 1547: (490, 1, 1547, 17.994071960449219, 3), 1605: (658, 1, 1605, 19.31205940246582, 3), 1606: (1794, 1, 1606, 16.964881896972656, 3), 1719: (1826, 1, 1719, 19.596025466918945, 3), 1617: (583, 1, 1617, 11.894925117492676, 3), 1492: (3441, 1, 1492, 20.500667572021484, 3), 1622: (3215, 1, 1622, 19.31205940246582, 3), 1628: (2761, 1, 1628, 19.744396209716797, 3), 1502: (1563, 1, 1502, 19.596025466918945, 3), 1632: (1108, 1, 1632, 15.457141876220703, 3), 1468: (3779, 1, 1468, 19.596025466918945, 3), 1642: (3970, 1, 1642, 19.744396209716797, 3), 1518: (612, 1, 1518, 18.570245742797852, 3), 1647: (854, 1, 1647, 16.964881896972656, 3), 1650: (2099, 1, 1650, 20.439058303833008, 3), 1651: (540, 1, 1651, 18.552841186523438, 3), 1653: (613, 1, 1653, 19.237197875976563, 3), 1532: (537, 1, 1532, 18.885730743408203, 3)} >>> unpickled[1] {1537: (64880, 1638, 56700, -1.0808743559293829e+18, 152), 1540: (64904, 1638, 0, 0.0, 0), 1544: (54472, 1490, 0, 0.0, 0), 1675: (6464, 1509, 0, 0.0, 0), 1550: (43592, 1510, 0, 0.0, 0), 1424: (43616, 1510, 0, 0.0, 0), 1681: (0, 0, 0, 0.0, 0), 1560: (400, 152, 400, 2.1299736657737219e-43, 0), 1690: (408, 152, 408, 2.7201111331839077e+26, 34), 1435: (424, 152, 61512, 1.0122952080313192e-39, 0), 1436: (400, 152, 400, 20.250289916992188, 3), 1434: (424, 152, 62080, 1.0122952080313192e-39, 0), 1441: (400, 152, 400, 12.250144958496094, 3), 1691: (424, 152, 42608, 15.813941955566406, 3), 1444: (400, 152, 400, 19.625289916992187, 3), 1606: (424, 152, 42432, 5.2947192852601414e-22, 41), 1575: (400, 152, 400, 6.2537390010262572e-36, 0), 1586: (424, 152, 42488, 1.0122601755697111e-39, 0), 1716: (400, 152, 400, 6.2537390010262572e-36, 0), 1590: (424, 152, 64144, 1.0126357235581501e-39, 0), 1463: (400, 152, 400, 6.2537390010262572e-36, 0), 1594: (424, 152, 32672, 17.002994537353516, 3), 1467: (400, 152, 400, 19.750289916992187, 3), 1596: (424, 152, 7176, 1.0124003054161436e-39, 0), 1602: (400, 152, 400, 18.500289916992188, 3), 1547: (424, 152, 7000, 1.0124003054161436e-39, 0), 1605: (400, 152, 400, 20.500289916992188, 3), 1478: (424, 152, 42256, -6.0222748507426518e+30, 222), 1719: (400, 152, 400, 6.2537390010262572e-36, 0), 1617: (424, 152, 16472, 1.0124283313854301e-39, 0), 1492: (400, 152, 400, 6.2537390010262572e-36, 0), 1622: (424, 152, 35304, 1.0123190301052127e-39, 0), 1628: (400, 152, 400, 6.2537390010262572e-36, 0), 1502: (424, 152, 63152, 19.627988815307617, 3), 1632: (400, 152, 400, 19.375289916992188, 3), 1468: (424, 152, 38088, 1.0124213248931084e-39, 0), 1642: (400, 152, 400, 6.2537390010262572e-36, 0), 1518: (424, 152, 63896, 1.0127436235399031e-39, 0), 1647: (400, 152, 400, 6.2537390010262572e-36, 0), 1650: (424, 152, 53424, 16.752857208251953, 3), 1651: (400, 152, 400, 19.250289916992188, 3), 1653: (424, 152, 50624, 1.0126497365427934e-39, 0), 1532: (400, 152, 400, 6.2537390010262572e-36, 0)} The keys come out fine, the values are screwed up. I tried same thing loading file in binary mode; didn't fix the problem. Any idea what I'm doing wrong? Edit: Here's the code with binary. Note that the values are different in the unpickled object. >>> idmapfile = open("idmap", mode="wb") >>> pickle.dump(idMap, idmapfile) >>> idmapfile.close() >>> idmapfile = open("idmap", mode="rb") >>> unpickled = pickle.load(idmapfile) >>> unpickled==idMap False >>> unpickled[1] {1537: (12176, 2281, 56700, -1.0808743559293829e+18, 152), 1540: (0, 0, 15934, 2.7457842047810522e+26, 108), 1544: (400, 152, 400, 4.9518498821046956e+27, 53), 1675: (408, 152, 408, 2.7201111331839077e+26, 34), 1550: (456, 152, 456, -1.1349175514578289e+18, 152), 1424: (432, 152, 432, 4.5939047815653343e-40, 11), 1681: (408, 152, 408, 2.1299736657737219e-43, 0), 1560: (376, 152, 376, 2.1299736657737219e-43, 0), 1690: (376, 152, 376, 2.1299736657737219e-43, 0), 1435: (376, 152, 376, 2.1299736657737219e-43, 0), 1436: (376, 152, 376, 2.1299736657737219e-43, 0), 1434: (376, 152, 376, 2.1299736657737219e-43, 0), 1441: (376, 152, 376, 2.1299736657737219e-43, 0), 1691: (376, 152, 376, 2.1299736657737219e-43, 0), 1444: (376, 152, 376, 2.1299736657737219e-43, 0), 1606: (25784, 2281, 376, -3.2883343074537754e+26, 34), 1575: (24240, 2281, 376, 2.1299736657737219e-43, 0), 1586: (24240, 2281, 376, 2.1299736657737219e-43, 0), 1716: (24240, 2281, 376, -3.0093091599657311e-35, 26), 1590: (24240, 2281, 376, 2.1299736657737219e-43, 0), 1463: (24240, 2281, 376, 2.1299736657737219e-43, 0), 1594: (24240, 2281, 376, -4123208450048.0, 196), 1467: (25784, 2281, 376, 2.1299736657737219e-43, 0), 1596: (25784, 2281, 376, 2.1299736657737219e-43, 0), 1602: (25784, 2281, 376, -5.9963281433905448e+26, 76), 1547: (25784, 2281, 376, -218106240.0, 139), 1605: (25784, 2281, 376, -3.7138649803377281e+27, 56), 1478: (376, 152, 376, 2.1299736657737219e-43, 0), 1719: (25784, 2281, 376, 2.1299736657737219e-43, 0), 1617: (25784, 2281, 376, -1.4411779941597184e+17, 237), 1492: (25784, 2281, 376, 2.8596493694487798e-30, 80), 1622: (25784, 2281, 376, 184686084096.0, 93), 1628: (1336, 152, 1336, 3.1691839245470052e+29, 179), 1502: (1272, 152, 1272, -5.2042207205116645e-17, 99), 1632: (1208, 152, 1208, 2.1299736657737219e-43, 0), 1468: (1144, 152, 1144, 2.1299736657737219e-43, 0), 1642: (1080, 152, 1080, 2.1299736657737219e-43, 0), 1518: (1016, 152, 1016, 4.0240902787680023e+35, 145), 1647: (952, 152, 952, -985172619034624.0, 237), 1650: (888, 152, 888, 12094787289088.0, 66), 1651: (824, 152, 824, 2.1299736657737219e-43, 0), 1653: (760, 152, 760, 0.00018310768064111471, 238), 1532: (696, 152, 696, 8.8978061885676389e+26, 125)} OK I've isolated the problem, but don't know why it's so. First, apparently what I'm pickling are not tuples (though they look like it), but instead numpy.void types. Here is a series to illustrate the problem. first = run0.detections[0] >>> first (1, 19, 1578, 82.637763977050781, 1) >>> type(first) <type 'numpy.void'> >>> firstTuple = tuple(first) >>> theFile = open("pickleTest", "w") >>> pickle.dump(first, theFile) >>> theTupleFile = open("pickleTupleTest", "w") >>> pickle.dump(firstTuple, theTupleFile) >>> theFile.close() >>> theTupleFile.close() >>> first (1, 19, 1578, 82.637763977050781, 1) >>> firstTuple (1, 19, 1578, 82.637764, 1) >>> theFile = open("pickleTest", "r") >>> theTupleFile = open("pickleTupleTest", "r") >>> unpickledTuple = pickle.load(theTupleFile) >>> unpickledVoid = pickle.load(theFile) >>> type(unpickledVoid) <type 'numpy.void'> >>> type(unpickledTuple) <type 'tuple'> >>> unpickledTuple (1, 19, 1578, 82.637764, 1) >>> unpickledTuple == firstTuple True >>> unpickledVoid == first False >>> unpickledVoid (7936, 1705, 56700, -1.0808743559293829e+18, 152) >>> first (1, 19, 1578, 82.637763977050781, 1)

    Read the article

  • Tips on setting up a virtual lab for self-learning networking topics

    - by Harry
    I'm trying to self-learn the following topics on Linux (preferably Fedora): Network programming (using sockets API), especially across proxies and firewalls Proxies (of various kinds like transparent, http, socks...), Firewalls (iptables) and 'basic' Linux security SNAT, DNAT Network admininstration power tools: nc, socat (with all its options), ssh, openssl, etc etc. Now, I know that, ideally, it would be best if I had 'enough' number of physical nodes and physical network equipment (routers, switches, etc) for this self-learning exercise. But, obviously, don't have the budget or the physical space, nor want to be wasteful -- especially, when things could perhaps be simulated/emulated in a Linux environment. I have got one personal workstation, which is a single-homed Fedora desktop with 4GB memory, 200+ GB disk, and a 4-core CPU. I may be able to get 3 to 4 additional low-end Fedora workstations. But all of these -- including mine -- will always remain strictly behind our corporate firewall :-( Now, I know I could use VirtualBox-based virtual nodes, but don't know if there are any better alternatives disk- and memory- footprint-wise. Would you be able to give me some tips or suggestions on how to get started setting up this little budget- and space-constrained 'virtual lab' of mine? For example, how would I create virtual routers? Has someone attempted this sort of thing before: namely, creating a virtual network lab behind a corporate firewall for learning/development/testing purposes? I hope my question is not vague or too open-ended. Basically, right now, I don't know how to best leverage the Linux environment and the various 'goodies' it comes with, and buying physical devices only when it is absolutely necessary.

    Read the article

  • Bootable GRUB partition

    - by MA1
    I have a customized live fedora 12 USB which is working fine. What i want to do is to make a partition of my hard disk bootable so that my customized fedora can be run from hard disk. To accomplish this i did the following steps: Created a primary partition(/dev/sda2) and format it as ext3 and set it as active. Copy all the files in the live usb to /dev/sda2. Following are the live usb contents(all directories): a. boot b. EFI c. LiveOS d. syslinux Then i installed the GRUB in boot/grub Created the grub.conf in boot/grub Following are the contents of each directory in the USB: syslinux/ boot.cat isolinux.bin splash.jpg vesamenu.c32 initrd0.img ldlinux.sys syslinux.cfg vmlinuz0 LiveOS/ livecd-iso-to-disk osmin.img squashfs.img EFI/ boot/ boot.conf grub.conf boot.efi bootia32.conf bootia32.efi splash.jpg splash.xpm.gz vesamenu.c32 initrd0.img isolinux.bin isolinux.cfg vmlinuz0 boot/grub/ core GRUB files grub.conf olpc.fth Following are contents of grub.conf default=0 splashimage=/EFI/boot/splash.xpm.gz timeout 2 hiddenmenu title funLinux kernel /EFI/boot/vmlinuz0 root=live:LABEL=myFun rootfstype=auto ro liveimg quiet ssb.blacklist=1 selinux=0 vga=normal nomodeset rhgb initrd /EFI/boot/initrd0.img Now when i try to boot from the hard disk it shows the grub menu and fedora starting to load but during loading it said No root device found Boot has failed, sleeping forever So, where is the problem? what i am doing wrong?

    Read the article

  • Bad font anti-aliasing in Ubuntu

    - by Juliano
    I'm switching from Fedora 8 to Ubuntu 9.04, and I can't seem to get it to get a good font anti-aliasing to work. It seems that Ubuntu's fontconfig tries to keep characters in integral pixel widths. This makes text more difficult to read, when 1 pixel is too thin and 2 pixels is too thick. Check the image below. In Fedora, when fontconfig anti-aliasing is enabled, fonts have their thickness proportional to the font size. Below, the thickness is different for 8, 9 and 10pt sizes. In Ubuntu, on the other hand, even when anti-aliasing is enabled, all 8, 9 and 10pt sizes have 1 pixel thickness. This makes reading larges amount of text difficult. I'm using the very same home directory, and I already checked that X resources are the same in both systems: ~% xrdb -query | grep Xft Xft.antialias: 1 Xft.dpi: 96 Xft.hinting: 1 Xft.hintstyle: hintfull Xft.rgba: none GNOME settings: ~% gconftool-2 -a /desktop/gnome/font_rendering antialiasing = grayscale hinting = full dpi = 96 rgba_order = rgb So, the question is: What should I change in the new box (Ubuntu) in order to get anti-aliasing like in the old box (Fedora)?

    Read the article

  • Shut Out of XP - No Admin Password or CDR

    - by ashes999
    I inherited an old WinXP/Linux dual-boot machine from the stoneage. Because it has Linux, the regular boot process is replaced with the Fedora boot loader; I cannot, therefore, press F8 strategically to tell my PC to boot from CD. Even if I could, it's a moot point; the CDR doesn't seem to recognize any CDs. To make things worse, there's no option to network boot. The original user is probably long gone; I don't know the password for any of the Administrator group users. I can login using my corp account, but that's unprivileged on this machine. Since I'm not an admin, I can't do crazy things, like looking at boot.ini. Or deleting files. I only have 500MB free on my C drive. I'm pretty sure I can't boot from a USB, since I didn't see any settings for this in my BIOS. How can I get admin access for my user? Edit: Things I've tried: Boot from CD (CD not recognized) Launch CD from XP (CD not recognized) Install Daemon Tools Lite so I can install from an ISO -- don't have admin privileges XP password recovery tool -- requires admin privileges Adding an admin user -- no access to Control Panel Users since I'm not an admin Logging in as both the admin users on the system (trying some standard passwords) Using Fedora to chntpw (the Fedora version installed is ancient -- 2.7)

    Read the article

  • Creating Custom ISO Images

    - by ericl42
    I am working on creating some custom ISO images using primarily Fedora and CentOS. I want the image to be a bootable live CD with some specific files on it. I also want it to have the option to be able to be downloaded to the hard drive. I've read some various articles but want to get a few more opinions since I've never done this before. Currently I'm trying 2 different methods. Install Fedora with the configuration exactly how I want it and then run the livecd-tools program to pull everything I currently have to an ISO. I haven't got this to work yet but I do see a few issues with it. Such as the default passwords I had to put in. Run a Fedora live CD and install a few things I want on it and then copy the image of it. I believe this would work better since it has more of a live cd feel. However I"m not 100% sure how I should go about pulling the current image to my own ISO. I know some people have said to use mkisofs and a few other programs but any advice would be greatly appreciated.

    Read the article

  • Very Slow DSL (ethernet) speed [New Interesting Update]

    - by Abhijit
    Very IMPORTANT and INTERESTING UPDATE: Due to some reason I just thought to do a complete new setup and this time I decided to again have openSUSE plus ubuntu. So I first reinstall lubuntu and then I installed OpenSUSE 12.2 (64 bit). Now, my DSL speed is working very normal and fine on opensuse. So this is very scary. Is it possible for any operating system to manipulate my NIC so that it will work fine only on that operating system and not on another os? Regarding positive thinking and not being paranoid, what is it that makes ONLY suse to get my NIC to work at normal speed but ubuntu can not do it? Not even fedora? Not even linux mint? What all these OS are lacking that enables suse to work great? == ORIGINAL QUESTION == I 'was' on opensuse 12.2 when my dsl speed was normal. Yesterday I switched from opensuse to ubuntu 12.04 and speed decreased. It came to range of 7-10-13-20-25-kbps. Then I switch to linux mint, and then to fedora. Still slow speed. When I was in ubuntu I disabled ipv6 but still no luck. Now I am in fedora but this time with DIFFERENT ISP. And still I am getting very slow sped. So my guess is this is nothing to do with os. What can be wrong? Is this problem of NIC? Does NIC speed decreases over time? Does NIC life ends over time as with keyboard or mouse? Help please All the os I used are 64 bit and my laptop is Compaq Presario A965Tu Intel Centrino DUal Core. Interesting thing to notice is I get normal speed while downloading torrent inside torrent client softwares. This slow speed issue applied to download from any web browser or installing software using terminal.

    Read the article

  • Unable to ssh to a Linux VM after a day

    - by jogabonito
    I have a machine running 4 VMs on it. There is one Fedora VM which is causing me some trouble. The IPs of the VMs are something like 10.100.100.* I have a Windows PC which is in the same network. It has an IP 10.100.25.77. When I reboot the Fedora VM, I am able to ping it from my Windows PC as well as use putty to ssh to it. The next day, I cant ping it or ssh from my Windows PC. However I can ping and ssh to the other VMs on the machine. If I ssh to one of the other VMs, I can ping and ssh to the Fedora VM. Next if I restart it, things get back to normal and I can access it without any issues. The IP of the VM doesn't change after rebooting and it is statically assigned I would like to know what is causing this and how to get it fixed. As a last resort, I am thinking of running a cron job to restart the VM every night, it is not a critical server, but will be generally used occasionally in the day time.

    Read the article

  • linux shutdown hang with wifi cifs mounts

    - by Sirex
    Since fedora 15 (and now with 16) it seems that wireless clients take a long while to shutdown when they have network filesystems mounted at shutdown time. I've pushed out a cifs mount via puppet, and all clients have it, including those on wireless. If say a laptop is on a wired connection it shuts down just fine, but if its on the wifi at the time (and no wired connection) it'll hang at the fedora f logo. I'm not sure if its indefinite or just a really long while, but ill give it a test when i shut this machine down in a second. Needless to say its pretty annoying, so is there a way of causing the machine to shutdown even if network connectivity has been lost at unmount time, -- or an official way to reorder events so the wireless card is kept up until after the unmount happens during the shut down process (short of writing a custom script for shutdowns which is a bit of a kludge) ? It does this on multiple machines, and all started doing it when we went from fedora 14 to 15. It was such an obvious issue i'd kind of assumed someone must have reported it or there was an easy fix, but i've not discovered anything yet. Additional info: I can confirm that manually unmounting the mounts then shutting down (sudo shutdown or the xfce shutdown button) will shutdown just fine, it only hangs if the mounts are still mounted The puppet config that sets the mount looks like this (now with the _netdev entry that is indeed pushed to clients successfully, but makes no difference): file { "/mnt/share": ensure = directory,} mount { "/mnt/share": atboot = true, ensure = mounted, remounts = false, fstype = cifs, device = "//srv/share", options = "user,gid=shareusers,uid=${user},file_mode=0700,dir_mode=0700,credentials=/root/.smbcreds,_netdev", require = [ File["/mnt/share"], Group["shareusers"] ], } }

    Read the article

  • Burning Linux ISO to DVD and making it bootable.

    - by toc777
    Hi everyone, I just downloaded the Fedora 14 Live-Desktop ISO and used CDBurnerXP to burn the image to a DVD. For some reason the first time I burned the image nothing showed up on the DVD when I accessed it even though CDBurnerXP said it had successfully burned to the disk. I did it again and the ISO shows up on the disk (I don't think this is right, should it be the files inside the image that show up on disk or the image file??). The problem now is my dell PC can't find the ISO when I try to boot from it. I get an error saying it can't boot from the CD. I have verified the ISO image as directed from the Fedora website. My question is how do I make a bootable CD from a Fedora Live-Desktop ISO? How can I verify that the ISO was written to the CD correctly and has anyone had any issues booting from a CD using a Dell desktop (I'm not at home at the moment so I can't check what model it is but its old enough, I've had it for about 5 years). EDIT: All that needed to be done was to burn the image to CD as an image and not a data file. The first three times failed, I'm not sure if this was because of faulty DVD's or if the write speed was too high (16x). I put in a new DVD and changed the write speed to 8x, the image was then properly burned to the disk without any errors. Thanks.

    Read the article

  • Custom binding with WCF

    - by user67240
    I have a wcf service where i have to implement the call backs and also i need to host the wcf service on the IIS 6.0, since IIS6.0 doesnot support the net.tcp binding, i decided to go for the custom binding. The reasons for going for custom binding is that the service is accessed by different clients in different timezones. Using custom binding i can set the allowed clock skew time to other values other than the default one. I have problem making the custom binding work for me. here is the server config file <bindings> <customBinding> <binding name="pscNetBinding" openTimeout="00:10:00"> <reliableSession acknowledgementInterval="00:00:00.2000000" flowControlEnabled="true" inactivityTimeout="23:59:59" maxPendingChannels="128" maxRetryCount="8" maxTransferWindowSize="128" ordered="true" /> <compositeDuplex /> <oneWay maxAcceptedChannels="128" packetRoutable="false"> <channelPoolSettings idleTimeout="00:10:00" leaseTimeout="00:10:00" maxOutboundChannelsPerEndpoint="10" /> </oneWay> <textMessageEncoding maxReadPoolSize="64" maxWritePoolSize="16" messageVersion="Default" writeEncoding="utf-8"> <readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647" maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" /> </textMessageEncoding> <httpTransport manualAddressing="false" maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647" allowCookies="false" authenticationScheme="Anonymous" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard" keepAliveEnabled="true" maxBufferSize="2147483647" proxyAuthenticationScheme="Anonymous" realm="" transferMode="Buffered" unsafeConnectionNtlmAuthentication="false" useDefaultWebProxy="true"/> </binding> </customBinding> </bindings> <services> <service name="SchneiderElectric.PSCNet.Server.Services.PSCNetWCFService" behaviorConfiguration="Behaviors1"> <host> <baseAddresses> <add baseAddress ="http://10.155.18.18:2000/PSCNet"/> </baseAddresses> </host> <endpoint address="" binding="customBinding" bindingConfiguration="pscNetBinding" contract="SchneiderElectric.PSCNet.Server.Contracts.IPSCNetWCFService"/> </service> </services> <behaviors> <serviceBehaviors> <behavior name="Behaviors1"> <serviceMetadata httpGetEnabled = "true"/> <!--<serviceThrottling maxConcurrentCalls="2048" maxConcurrentSessions="2048" maxConcurrentInstances="2048" /> <dataContractSerializer maxItemsInObjectGraph="2147483647" />--> </behavior> </serviceBehaviors> </behaviors> and here the client config file <bindings> <customBinding> <binding name="pscNetBinding" openTimeout="00:10:00"> <reliableSession acknowledgementInterval="00:00:00.2000000" flowControlEnabled="true" inactivityTimeout="23:59:59" maxPendingChannels="128" maxRetryCount="8" maxTransferWindowSize="128" ordered="true" /> <compositeDuplex /> <oneWay maxAcceptedChannels="128" packetRoutable="false"> <channelPoolSettings idleTimeout="00:10:00" leaseTimeout="00:10:00" maxOutboundChannelsPerEndpoint="10" /> </oneWay> <textMessageEncoding maxReadPoolSize="64" maxWritePoolSize="16" messageVersion="Default" writeEncoding="utf-8" > <readerQuotas maxDepth="2147483647" maxStringContentLength="2147483647" maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" /> </textMessageEncoding > <httpTransport manualAddressing="false" maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647" allowCookies="false" authenticationScheme="Anonymous" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard" keepAliveEnabled="true" maxBufferSize="2147483647" proxyAuthenticationScheme="Anonymous" realm="" transferMode="Buffered" unsafeConnectionNtlmAuthentication="false" useDefaultWebProxy="true" /> </binding> </customBinding> </bindings> <client> <endpoint address="http://10.155.18.18:2000/PSCNet" binding="customBinding" bindingConfiguration="pscNetBinding" contract="PSCNetWCFService.IPSCNetWCFService" name="pscNetBinding" /> </client> if i use the server and client on the same machine everything works fine. But as soon as i run the server and client on different machine i get the following error "Could not connect to http://10.155.18.198:9000/e60ba5b3-f979-4922-b9f8-c820caaa04c2. TCP error code 10060: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 10.155.18.198:9000." Can anyone in the community help me in this regard.

    Read the article

  • value types in the vm

    - by john.rose
    value types in the vm p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Times} p.p2 {margin: 0.0px 0.0px 14.0px 0.0px; font: 14.0px Times} p.p3 {margin: 0.0px 0.0px 12.0px 0.0px; font: 14.0px Times} p.p4 {margin: 0.0px 0.0px 15.0px 0.0px; font: 14.0px Times} p.p5 {margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Courier} p.p6 {margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Courier; min-height: 17.0px} p.p7 {margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Times; min-height: 18.0px} p.p8 {margin: 0.0px 0.0px 0.0px 36.0px; text-indent: -36.0px; font: 14.0px Times; min-height: 18.0px} p.p9 {margin: 0.0px 0.0px 12.0px 0.0px; font: 14.0px Times; min-height: 18.0px} p.p10 {margin: 0.0px 0.0px 12.0px 0.0px; font: 14.0px Times; color: #000000} li.li1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Times} li.li7 {margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Times; min-height: 18.0px} span.s1 {font: 14.0px Courier} span.s2 {color: #000000} span.s3 {font: 14.0px Courier; color: #000000} ol.ol1 {list-style-type: decimal} Or, enduring values for a changing world. Introduction A value type is a data type which, generally speaking, is designed for being passed by value in and out of methods, and stored by value in data structures. The only value types which the Java language directly supports are the eight primitive types. Java indirectly and approximately supports value types, if they are implemented in terms of classes. For example, both Integer and String may be viewed as value types, especially if their usage is restricted to avoid operations appropriate to Object. In this note, we propose a definition of value types in terms of a design pattern for Java classes, accompanied by a set of usage restrictions. We also sketch the relation of such value types to tuple types (which are a JVM-level notion), and point out JVM optimizations that can apply to value types. This note is a thought experiment to extend the JVM’s performance model in support of value types. The demonstration has two phases.  Initially the extension can simply use design patterns, within the current bytecode architecture, and in today’s Java language. But if the performance model is to be realized in practice, it will probably require new JVM bytecode features, changes to the Java language, or both.  We will look at a few possibilities for these new features. An Axiom of Value In the context of the JVM, a value type is a data type equipped with construction, assignment, and equality operations, and a set of typed components, such that, whenever two variables of the value type produce equal corresponding values for their components, the values of the two variables cannot be distinguished by any JVM operation. Here are some corollaries: A value type is immutable, since otherwise a copy could be constructed and the original could be modified in one of its components, allowing the copies to be distinguished. Changing the component of a value type requires construction of a new value. The equals and hashCode operations are strictly component-wise. If a value type is represented by a JVM reference, that reference cannot be successfully synchronized on, and cannot be usefully compared for reference equality. A value type can be viewed in terms of what it doesn’t do. We can say that a value type omits all value-unsafe operations, which could violate the constraints on value types.  These operations, which are ordinarily allowed for Java object types, are pointer equality comparison (the acmp instruction), synchronization (the monitor instructions), all the wait and notify methods of class Object, and non-trivial finalize methods. The clone method is also value-unsafe, although for value types it could be treated as the identity function. Finally, and most importantly, any side effect on an object (however visible) also counts as an value-unsafe operation. A value type may have methods, but such methods must not change the components of the value. It is reasonable and useful to define methods like toString, equals, and hashCode on value types, and also methods which are specifically valuable to users of the value type. Representations of Value Value types have two natural representations in the JVM, unboxed and boxed. An unboxed value consists of the components, as simple variables. For example, the complex number x=(1+2i), in rectangular coordinate form, may be represented in unboxed form by the following pair of variables: /*Complex x = Complex.valueOf(1.0, 2.0):*/ double x_re = 1.0, x_im = 2.0; These variables might be locals, parameters, or fields. Their association as components of a single value is not defined to the JVM. Here is a sample computation which computes the norm of the difference between two complex numbers: double distance(/*Complex x:*/ double x_re, double x_im,         /*Complex y:*/ double y_re, double y_im) {     /*Complex z = x.minus(y):*/     double z_re = x_re - y_re, z_im = x_im - y_im;     /*return z.abs():*/     return Math.sqrt(z_re*z_re + z_im*z_im); } A boxed representation groups component values under a single object reference. The reference is to a ‘wrapper class’ that carries the component values in its fields. (A primitive type can naturally be equated with a trivial value type with just one component of that type. In that view, the wrapper class Integer can serve as a boxed representation of value type int.) The unboxed representation of complex numbers is practical for many uses, but it fails to cover several major use cases: return values, array elements, and generic APIs. The two components of a complex number cannot be directly returned from a Java function, since Java does not support multiple return values. The same story applies to array elements: Java has no ’array of structs’ feature. (Double-length arrays are a possible workaround for complex numbers, but not for value types with heterogeneous components.) By generic APIs I mean both those which use generic types, like Arrays.asList and those which have special case support for primitive types, like String.valueOf and PrintStream.println. Those APIs do not support unboxed values, and offer some problems to boxed values. Any ’real’ JVM type should have a story for returns, arrays, and API interoperability. The basic problem here is that value types fall between primitive types and object types. Value types are clearly more complex than primitive types, and object types are slightly too complicated. Objects are a little bit dangerous to use as value carriers, since object references can be compared for pointer equality, and can be synchronized on. Also, as many Java programmers have observed, there is often a performance cost to using wrapper objects, even on modern JVMs. Even so, wrapper classes are a good starting point for talking about value types. If there were a set of structural rules and restrictions which would prevent value-unsafe operations on value types, wrapper classes would provide a good notation for defining value types. This note attempts to define such rules and restrictions. Let’s Start Coding Now it is time to look at some real code. Here is a definition, written in Java, of a complex number value type. @ValueSafe public final class Complex implements java.io.Serializable {     // immutable component structure:     public final double re, im;     private Complex(double re, double im) {         this.re = re; this.im = im;     }     // interoperability methods:     public String toString() { return "Complex("+re+","+im+")"; }     public List<Double> asList() { return Arrays.asList(re, im); }     public boolean equals(Complex c) {         return re == c.re && im == c.im;     }     public boolean equals(@ValueSafe Object x) {         return x instanceof Complex && equals((Complex) x);     }     public int hashCode() {         return 31*Double.valueOf(re).hashCode()                 + Double.valueOf(im).hashCode();     }     // factory methods:     public static Complex valueOf(double re, double im) {         return new Complex(re, im);     }     public Complex changeRe(double re2) { return valueOf(re2, im); }     public Complex changeIm(double im2) { return valueOf(re, im2); }     public static Complex cast(@ValueSafe Object x) {         return x == null ? ZERO : (Complex) x;     }     // utility methods and constants:     public Complex plus(Complex c)  { return new Complex(re+c.re, im+c.im); }     public Complex minus(Complex c) { return new Complex(re-c.re, im-c.im); }     public double abs() { return Math.sqrt(re*re + im*im); }     public static final Complex PI = valueOf(Math.PI, 0.0);     public static final Complex ZERO = valueOf(0.0, 0.0); } This is not a minimal definition, because it includes some utility methods and other optional parts.  The essential elements are as follows: The class is marked as a value type with an annotation. The class is final, because it does not make sense to create subclasses of value types. The fields of the class are all non-private and final.  (I.e., the type is immutable and structurally transparent.) From the supertype Object, all public non-final methods are overridden. The constructor is private. Beyond these bare essentials, we can observe the following features in this example, which are likely to be typical of all value types: One or more factory methods are responsible for value creation, including a component-wise valueOf method. There are utility methods for complex arithmetic and instance creation, such as plus and changeIm. There are static utility constants, such as PI. The type is serializable, using the default mechanisms. There are methods for converting to and from dynamically typed references, such as asList and cast. The Rules In order to use value types properly, the programmer must avoid value-unsafe operations.  A helpful Java compiler should issue errors (or at least warnings) for code which provably applies value-unsafe operations, and should issue warnings for code which might be correct but does not provably avoid value-unsafe operations.  No such compilers exist today, but to simplify our account here, we will pretend that they do exist. A value-safe type is any class, interface, or type parameter marked with the @ValueSafe annotation, or any subtype of a value-safe type.  If a value-safe class is marked final, it is in fact a value type.  All other value-safe classes must be abstract.  The non-static fields of a value class must be non-public and final, and all its constructors must be private. Under the above rules, a standard interface could be helpful to define value types like Complex.  Here is an example: @ValueSafe public interface ValueType extends java.io.Serializable {     // All methods listed here must get redefined.     // Definitions must be value-safe, which means     // they may depend on component values only.     List<? extends Object> asList();     int hashCode();     boolean equals(@ValueSafe Object c);     String toString(); } //@ValueSafe inherited from supertype: public final class Complex implements ValueType { … The main advantage of such a conventional interface is that (unlike an annotation) it is reified in the runtime type system.  It could appear as an element type or parameter bound, for facilities which are designed to work on value types only.  More broadly, it might assist the JVM to perform dynamic enforcement of the rules for value types. Besides types, the annotation @ValueSafe can mark fields, parameters, local variables, and methods.  (This is redundant when the type is also value-safe, but may be useful when the type is Object or another supertype of a value type.)  Working forward from these annotations, an expression E is defined as value-safe if it satisfies one or more of the following: The type of E is a value-safe type. E names a field, parameter, or local variable whose declaration is marked @ValueSafe. E is a call to a method whose declaration is marked @ValueSafe. E is an assignment to a value-safe variable, field reference, or array reference. E is a cast to a value-safe type from a value-safe expression. E is a conditional expression E0 ? E1 : E2, and both E1 and E2 are value-safe. Assignments to value-safe expressions and initializations of value-safe names must take their values from value-safe expressions. A value-safe expression may not be the subject of a value-unsafe operation.  In particular, it cannot be synchronized on, nor can it be compared with the “==” operator, not even with a null or with another value-safe type. In a program where all of these rules are followed, no value-type value will be subject to a value-unsafe operation.  Thus, the prime axiom of value types will be satisfied, that no two value type will be distinguishable as long as their component values are equal. More Code To illustrate these rules, here are some usage examples for Complex: Complex pi = Complex.valueOf(Math.PI, 0); Complex zero = pi.changeRe(0);  //zero = pi; zero.re = 0; ValueType vtype = pi; @SuppressWarnings("value-unsafe")   Object obj = pi; @ValueSafe Object obj2 = pi; obj2 = new Object();  // ok List<Complex> clist = new ArrayList<Complex>(); clist.add(pi);  // (ok assuming List.add param is @ValueSafe) List<ValueType> vlist = new ArrayList<ValueType>(); vlist.add(pi);  // (ok) List<Object> olist = new ArrayList<Object>(); olist.add(pi);  // warning: "value-unsafe" boolean z = pi.equals(zero); boolean z1 = (pi == zero);  // error: reference comparison on value type boolean z2 = (pi == null);  // error: reference comparison on value type boolean z3 = (pi == obj2);  // error: reference comparison on value type synchronized (pi) { }  // error: synch of value, unpredictable result synchronized (obj2) { }  // unpredictable result Complex qq = pi; qq = null;  // possible NPE; warning: “null-unsafe" qq = (Complex) obj;  // warning: “null-unsafe" qq = Complex.cast(obj);  // OK @SuppressWarnings("null-unsafe")   Complex empty = null;  // possible NPE qq = empty;  // possible NPE (null pollution) The Payoffs It follows from this that either the JVM or the java compiler can replace boxed value-type values with unboxed ones, without affecting normal computations.  Fields and variables of value types can be split into their unboxed components.  Non-static methods on value types can be transformed into static methods which take the components as value parameters. Some common questions arise around this point in any discussion of value types. Why burden the programmer with all these extra rules?  Why not detect programs automagically and perform unboxing transparently?  The answer is that it is easy to break the rules accidently unless they are agreed to by the programmer and enforced.  Automatic unboxing optimizations are tantalizing but (so far) unreachable ideal.  In the current state of the art, it is possible exhibit benchmarks in which automatic unboxing provides the desired effects, but it is not possible to provide a JVM with a performance model that assures the programmer when unboxing will occur.  This is why I’m writing this note, to enlist help from, and provide assurances to, the programmer.  Basically, I’m shooting for a good set of user-supplied “pragmas” to frame the desired optimization. Again, the important thing is that the unboxing must be done reliably, or else programmers will have no reason to work with the extra complexity of the value-safety rules.  There must be a reasonably stable performance model, wherein using a value type has approximately the same performance characteristics as writing the unboxed components as separate Java variables. There are some rough corners to the present scheme.  Since Java fields and array elements are initialized to null, value-type computations which incorporate uninitialized variables can produce null pointer exceptions.  One workaround for this is to require such variables to be null-tested, and the result replaced with a suitable all-zero value of the value type.  That is what the “cast” method does above. Generically typed APIs like List<T> will continue to manipulate boxed values always, at least until we figure out how to do reification of generic type instances.  Use of such APIs will elicit warnings until their type parameters (and/or relevant members) are annotated or typed as value-safe.  Retrofitting List<T> is likely to expose flaws in the present scheme, which we will need to engineer around.  Here are a couple of first approaches: public interface java.util.List<@ValueSafe T> extends Collection<T> { … public interface java.util.List<T extends Object|ValueType> extends Collection<T> { … (The second approach would require disjunctive types, in which value-safety is “contagious” from the constituent types.) With more transformations, the return value types of methods can also be unboxed.  This may require significant bytecode-level transformations, and would work best in the presence of a bytecode representation for multiple value groups, which I have proposed elsewhere under the title “Tuples in the VM”. But for starters, the JVM can apply this transformation under the covers, to internally compiled methods.  This would give a way to express multiple return values and structured return values, which is a significant pain-point for Java programmers, especially those who work with low-level structure types favored by modern vector and graphics processors.  The lack of multiple return values has a strong distorting effect on many Java APIs. Even if the JVM fails to unbox a value, there is still potential benefit to the value type.  Clustered computing systems something have copy operations (serialization or something similar) which apply implicitly to command operands.  When copying JVM objects, it is extremely helpful to know when an object’s identity is important or not.  If an object reference is a copied operand, the system may have to create a proxy handle which points back to the original object, so that side effects are visible.  Proxies must be managed carefully, and this can be expensive.  On the other hand, value types are exactly those types which a JVM can “copy and forget” with no downside. Array types are crucial to bulk data interfaces.  (As data sizes and rates increase, bulk data becomes more important than scalar data, so arrays are definitely accompanying us into the future of computing.)  Value types are very helpful for adding structure to bulk data, so a successful value type mechanism will make it easier for us to express richer forms of bulk data. Unboxing arrays (i.e., arrays containing unboxed values) will provide better cache and memory density, and more direct data movement within clustered or heterogeneous computing systems.  They require the deepest transformations, relative to today’s JVM.  There is an impedance mismatch between value-type arrays and Java’s covariant array typing, so compromises will need to be struck with existing Java semantics.  It is probably worth the effort, since arrays of unboxed value types are inherently more memory-efficient than standard Java arrays, which rely on dependent pointer chains. It may be sufficient to extend the “value-safe” concept to array declarations, and allow low-level transformations to change value-safe array declarations from the standard boxed form into an unboxed tuple-based form.  Such value-safe arrays would not be convertible to Object[] arrays.  Certain connection points, such as Arrays.copyOf and System.arraycopy might need additional input/output combinations, to allow smooth conversion between arrays with boxed and unboxed elements. Alternatively, the correct solution may have to wait until we have enough reification of generic types, and enough operator overloading, to enable an overhaul of Java arrays. Implicit Method Definitions The example of class Complex above may be unattractively complex.  I believe most or all of the elements of the example class are required by the logic of value types. If this is true, a programmer who writes a value type will have to write lots of error-prone boilerplate code.  On the other hand, I think nearly all of the code (except for the domain-specific parts like plus and minus) can be implicitly generated. Java has a rule for implicitly defining a class’s constructor, if no it defines no constructors explicitly.  Likewise, there are rules for providing default access modifiers for interface members.  Because of the highly regular structure of value types, it might be reasonable to perform similar implicit transformations on value types.  Here’s an example of a “highly implicit” definition of a complex number type: public class Complex implements ValueType {  // implicitly final     public double re, im;  // implicitly public final     //implicit methods are defined elementwise from te fields:     //  toString, asList, equals(2), hashCode, valueOf, cast     //optionally, explicit methods (plus, abs, etc.) would go here } In other words, with the right defaults, a simple value type definition can be a one-liner.  The observant reader will have noticed the similarities (and suitable differences) between the explicit methods above and the corresponding methods for List<T>. Another way to abbreviate such a class would be to make an annotation the primary trigger of the functionality, and to add the interface(s) implicitly: public @ValueType class Complex { … // implicitly final, implements ValueType (But to me it seems better to communicate the “magic” via an interface, even if it is rooted in an annotation.) Implicitly Defined Value Types So far we have been working with nominal value types, which is to say that the sequence of typed components is associated with a name and additional methods that convey the intention of the programmer.  A simple ordered pair of floating point numbers can be variously interpreted as (to name a few possibilities) a rectangular or polar complex number or Cartesian point.  The name and the methods convey the intended meaning. But what if we need a truly simple ordered pair of floating point numbers, without any further conceptual baggage?  Perhaps we are writing a method (like “divideAndRemainder”) which naturally returns a pair of numbers instead of a single number.  Wrapping the pair of numbers in a nominal type (like “QuotientAndRemainder”) makes as little sense as wrapping a single return value in a nominal type (like “Quotient”).  What we need here are structural value types commonly known as tuples. For the present discussion, let us assign a conventional, JVM-friendly name to tuples, roughly as follows: public class java.lang.tuple.$DD extends java.lang.tuple.Tuple {      double $1, $2; } Here the component names are fixed and all the required methods are defined implicitly.  The supertype is an abstract class which has suitable shared declarations.  The name itself mentions a JVM-style method parameter descriptor, which may be “cracked” to determine the number and types of the component fields. The odd thing about such a tuple type (and structural types in general) is it must be instantiated lazily, in response to linkage requests from one or more classes that need it.  The JVM and/or its class loaders must be prepared to spin a tuple type on demand, given a simple name reference, $xyz, where the xyz is cracked into a series of component types.  (Specifics of naming and name mangling need some tasteful engineering.) Tuples also seem to demand, even more than nominal types, some support from the language.  (This is probably because notations for non-nominal types work best as combinations of punctuation and type names, rather than named constructors like Function3 or Tuple2.)  At a minimum, languages with tuples usually (I think) have some sort of simple bracket notation for creating tuples, and a corresponding pattern-matching syntax (or “destructuring bind”) for taking tuples apart, at least when they are parameter lists.  Designing such a syntax is no simple thing, because it ought to play well with nominal value types, and also with pre-existing Java features, such as method parameter lists, implicit conversions, generic types, and reflection.  That is a task for another day. Other Use Cases Besides complex numbers and simple tuples there are many use cases for value types.  Many tuple-like types have natural value-type representations. These include rational numbers, point locations and pixel colors, and various kinds of dates and addresses. Other types have a variable-length ‘tail’ of internal values. The most common example of this is String, which is (mathematically) a sequence of UTF-16 character values. Similarly, bit vectors, multiple-precision numbers, and polynomials are composed of sequences of values. Such types include, in their representation, a reference to a variable-sized data structure (often an array) which (somehow) represents the sequence of values. The value type may also include ’header’ information. Variable-sized values often have a length distribution which favors short lengths. In that case, the design of the value type can make the first few values in the sequence be direct ’header’ fields of the value type. In the common case where the header is enough to represent the whole value, the tail can be a shared null value, or even just a null reference. Note that the tail need not be an immutable object, as long as the header type encapsulates it well enough. This is the case with String, where the tail is a mutable (but never mutated) character array. Field types and their order must be a globally visible part of the API.  The structure of the value type must be transparent enough to have a globally consistent unboxed representation, so that all callers and callees agree about the type and order of components  that appear as parameters, return types, and array elements.  This is a trade-off between efficiency and encapsulation, which is forced on us when we remove an indirection enjoyed by boxed representations.  A JVM-only transformation would not care about such visibility, but a bytecode transformation would need to take care that (say) the components of complex numbers would not get swapped after a redefinition of Complex and a partial recompile.  Perhaps constant pool references to value types need to declare the field order as assumed by each API user. This brings up the delicate status of private fields in a value type.  It must always be possible to load, store, and copy value types as coordinated groups, and the JVM performs those movements by moving individual scalar values between locals and stack.  If a component field is not public, what is to prevent hostile code from plucking it out of the tuple using a rogue aload or astore instruction?  Nothing but the verifier, so we may need to give it more smarts, so that it treats value types as inseparable groups of stack slots or locals (something like long or double). My initial thought was to make the fields always public, which would make the security problem moot.  But public is not always the right answer; consider the case of String, where the underlying mutable character array must be encapsulated to prevent security holes.  I believe we can win back both sides of the tradeoff, by training the verifier never to split up the components in an unboxed value.  Just as the verifier encapsulates the two halves of a 64-bit primitive, it can encapsulate the the header and body of an unboxed String, so that no code other than that of class String itself can take apart the values. Similar to String, we could build an efficient multi-precision decimal type along these lines: public final class DecimalValue extends ValueType {     protected final long header;     protected private final BigInteger digits;     public DecimalValue valueOf(int value, int scale) {         assert(scale >= 0);         return new DecimalValue(((long)value << 32) + scale, null);     }     public DecimalValue valueOf(long value, int scale) {         if (value == (int) value)             return valueOf((int)value, scale);         return new DecimalValue(-scale, new BigInteger(value));     } } Values of this type would be passed between methods as two machine words. Small values (those with a significand which fits into 32 bits) would be represented without any heap data at all, unless the DecimalValue itself were boxed. (Note the tension between encapsulation and unboxing in this case.  It would be better if the header and digits fields were private, but depending on where the unboxing information must “leak”, it is probably safer to make a public revelation of the internal structure.) Note that, although an array of Complex can be faked with a double-length array of double, there is no easy way to fake an array of unboxed DecimalValues.  (Either an array of boxed values or a transposed pair of homogeneous arrays would be reasonable fallbacks, in a current JVM.)  Getting the full benefit of unboxing and arrays will require some new JVM magic. Although the JVM emphasizes portability, system dependent code will benefit from using machine-level types larger than 64 bits.  For example, the back end of a linear algebra package might benefit from value types like Float4 which map to stock vector types.  This is probably only worthwhile if the unboxing arrays can be packed with such values. More Daydreams A more finely-divided design for dynamic enforcement of value safety could feature separate marker interfaces for each invariant.  An empty marker interface Unsynchronizable could cause suitable exceptions for monitor instructions on objects in marked classes.  More radically, a Interchangeable marker interface could cause JVM primitives that are sensitive to object identity to raise exceptions; the strangest result would be that the acmp instruction would have to be specified as raising an exception. @ValueSafe public interface ValueType extends java.io.Serializable,         Unsynchronizable, Interchangeable { … public class Complex implements ValueType {     // inherits Serializable, Unsynchronizable, Interchangeable, @ValueSafe     … It seems possible that Integer and the other wrapper types could be retro-fitted as value-safe types.  This is a major change, since wrapper objects would be unsynchronizable and their references interchangeable.  It is likely that code which violates value-safety for wrapper types exists but is uncommon.  It is less plausible to retro-fit String, since the prominent operation String.intern is often used with value-unsafe code. We should also reconsider the distinction between boxed and unboxed values in code.  The design presented above obscures that distinction.  As another thought experiment, we could imagine making a first class distinction in the type system between boxed and unboxed representations.  Since only primitive types are named with a lower-case initial letter, we could define that the capitalized version of a value type name always refers to the boxed representation, while the initial lower-case variant always refers to boxed.  For example: complex pi = complex.valueOf(Math.PI, 0); Complex boxPi = pi;  // convert to boxed myList.add(boxPi); complex z = myList.get(0);  // unbox Such a convention could perhaps absorb the current difference between int and Integer, double and Double. It might also allow the programmer to express a helpful distinction among array types. As said above, array types are crucial to bulk data interfaces, but are limited in the JVM.  Extending arrays beyond the present limitations is worth thinking about; for example, the Maxine JVM implementation has a hybrid object/array type.  Something like this which can also accommodate value type components seems worthwhile.  On the other hand, does it make sense for value types to contain short arrays?  And why should random-access arrays be the end of our design process, when bulk data is often sequentially accessed, and it might make sense to have heterogeneous streams of data as the natural “jumbo” data structure.  These considerations must wait for another day and another note. More Work It seems to me that a good sequence for introducing such value types would be as follows: Add the value-safety restrictions to an experimental version of javac. Code some sample applications with value types, including Complex and DecimalValue. Create an experimental JVM which internally unboxes value types but does not require new bytecodes to do so.  Ensure the feasibility of the performance model for the sample applications. Add tuple-like bytecodes (with or without generic type reification) to a major revision of the JVM, and teach the Java compiler to switch in the new bytecodes without code changes. A staggered roll-out like this would decouple language changes from bytecode changes, which is always a convenient thing. A similar investigation should be applied (concurrently) to array types.  In this case, it seems to me that the starting point is in the JVM: Add an experimental unboxing array data structure to a production JVM, perhaps along the lines of Maxine hybrids.  No bytecode or language support is required at first; everything can be done with encapsulated unsafe operations and/or method handles. Create an experimental JVM which internally unboxes value types but does not require new bytecodes to do so.  Ensure the feasibility of the performance model for the sample applications. Add tuple-like bytecodes (with or without generic type reification) to a major revision of the JVM, and teach the Java compiler to switch in the new bytecodes without code changes. That’s enough musing me for now.  Back to work!

    Read the article

  • RHEL - blocked FC remote port time out: saving binding

    - by Dev G
    My Server went into a faulty state since the database could not write on the partition. I found out that the partition went into Read Only mode. Finally to fix it, I had to do a hard reboot. Linux 2.6.18-164.el5PAE #1 SMP Tue Aug 18 15:59:11 EDT 2009 i686 i686 i386 GNU/Linux /var/log/messages Oct 31 00:56:45 ota3g1 Had[17275]: VCS ERROR V-16-1-10214 Concurrency Violation:CurrentCount increased above 1 for failover group sg_network Oct 31 00:57:05 ota3g1 Had[17275]: VCS CRITICAL V-16-1-50086 CPU usage on ota3g1.mtsallstream.com is 100% Oct 31 01:01:47 ota3g1 Had[17275]: VCS ERROR V-16-1-10214 Concurrency Violation:CurrentCount increased above 1 for failover group sg_network Oct 31 01:06:50 ota3g1 Had[17275]: VCS ERROR V-16-1-10214 Concurrency Violation:CurrentCount increased above 1 for failover group sg_network Oct 31 01:11:52 ota3g1 Had[17275]: VCS ERROR V-16-1-10214 Concurrency Violation:CurrentCount increased above 1 for failover group sg_network Oct 31 01:12:10 ota3g1 kernel: lpfc 0000:29:00.1: 1:1305 Link Down Event x2 received Data: x2 x20 x80000 x0 x0 Oct 31 01:12:10 ota3g1 kernel: lpfc 0000:29:00.1: 1:1303 Link Up Event x3 received Data: x3 x1 x10 x1 x0 x0 0 Oct 31 01:12:12 ota3g1 kernel: lpfc 0000:29:00.1: 1:1305 Link Down Event x4 received Data: x4 x20 x80000 x0 x0 Oct 31 01:12:40 ota3g1 kernel: rport-8:0-0: blocked FC remote port time out: saving binding Oct 31 01:12:40 ota3g1 kernel: lpfc 0000:29:00.1: 1:(0):0203 Devloss timeout on WWPN 20:25:00:a0:b8:74:f5:65 NPort x0000e4 Data: x0 x7 x0 Oct 31 01:12:40 ota3g1 kernel: sd 8:0:0:4: SCSI error: return code = 0x00010000 Oct 31 01:12:40 ota3g1 kernel: end_request: I/O error, dev sdi, sector 38617577 Oct 31 01:12:40 ota3g1 kernel: sd 8:0:0:4: SCSI error: return code = 0x00010000 Oct 31 01:12:40 ota3g1 kernel: end_request: I/O error, dev sdi, sector 283532153 Oct 31 01:12:40 ota3g1 kernel: sd 8:0:0:4: SCSI error: return code = 0x00010000 Oct 31 01:12:40 ota3g1 kernel: end_request: I/O error, dev sdi, sector 90825 Oct 31 01:12:40 ota3g1 kernel: Aborting journal on device dm-16. Oct 31 01:12:40 ota3g1 kernel: sd 8:0:0:4: SCSI error: return code = 0x00010000 Oct 31 01:12:40 ota3g1 kernel: end_request: I/O error, dev sdi, sector 868841 Oct 31 01:12:40 ota3g1 kernel: sd 8:0:0:4: SCSI error: return code = 0x00010000 Oct 31 01:12:40 ota3g1 kernel: Aborting journal on device dm-10. Oct 31 01:12:40 ota3g1 kernel: end_request: I/O error, dev sdi, sector 37759889 Oct 31 01:12:40 ota3g1 kernel: sd 8:0:0:4: SCSI error: return code = 0x00010000 Oct 31 01:12:40 ota3g1 kernel: end_request: I/O error, dev sdi, sector 283349449 Oct 31 01:12:40 ota3g1 kernel: printk: 6 messages suppressed. Oct 31 01:12:40 ota3g1 kernel: Aborting journal on device dm-12. Oct 31 01:12:40 ota3g1 kernel: EXT3-fs error (device dm-12) in ext3_reserve_inode_write: Journal has aborted Oct 31 01:12:40 ota3g1 kernel: Buffer I/O error on device dm-16, logical block 1545 Oct 31 01:12:40 ota3g1 kernel: lost page write due to I/O error on dm-16 Oct 31 01:12:40 ota3g1 kernel: sd 8:0:0:4: SCSI error: return code = 0x00010000 Oct 31 01:12:40 ota3g1 kernel: end_request: I/O error, dev sdi, sector 12745 Oct 31 01:12:40 ota3g1 kernel: Buffer I/O error on device dm-10, logical block 1545 Oct 31 01:12:40 ota3g1 kernel: EXT3-fs error (device dm-16) in ext3_reserve_inode_write: Journal has aborted Oct 31 01:12:40 ota3g1 kernel: lost page write due to I/O error on dm-10 Oct 31 01:12:40 ota3g1 kernel: sd 8:0:0:4: SCSI error: return code = 0x00010000 Oct 31 01:12:40 ota3g1 kernel: end_request: I/O error, dev sdi, sector 37749121 Oct 31 01:12:40 ota3g1 kernel: Buffer I/O error on device dm-12, logical block 0 Oct 31 01:12:40 ota3g1 kernel: lost page write due to I/O error on dm-12 Oct 31 01:12:40 ota3g1 kernel: sd 8:0:0:4: SCSI error: return code = 0x00010000 Oct 31 01:12:40 ota3g1 kernel: EXT3-fs error (device dm-12) in ext3_dirty_inode: Journal has aborted Oct 31 01:12:40 ota3g1 kernel: end_request: I/O error, dev sdi, sector 37757897 Oct 31 01:12:40 ota3g1 kernel: Buffer I/O error on device dm-12, logical block 1097 Oct 31 01:12:40 ota3g1 kernel: lost page write due to I/O error on dm-12 Oct 31 01:12:40 ota3g1 kernel: sd 8:0:0:4: SCSI error: return code = 0x00010000 Oct 31 01:12:40 ota3g1 kernel: end_request: I/O error, dev sdi, sector 283337089 Oct 31 01:12:40 ota3g1 kernel: Buffer I/O error on device dm-16, logical block 0 Oct 31 01:12:40 ota3g1 kernel: lost page write due to I/O error on dm-16 Oct 31 01:12:40 ota3g1 kernel: sd 8:0:0:4: SCSI error: return code = 0x00010000 Oct 31 01:12:40 ota3g1 kernel: EXT3-fs error (device dm-16) in ext3_dirty_inode: Journal has aborted Oct 31 01:12:40 ota3g1 kernel: end_request: I/O error, dev sdi, sector 37749121 Oct 31 01:12:40 ota3g1 kernel: Buffer I/O error on device dm-12, logical block 0 Oct 31 01:12:41 ota3g1 kernel: lost page write due to I/O error on dm-12 Oct 31 01:12:41 ota3g1 kernel: sd 8:0:0:4: SCSI error: return code = 0x00010000 Oct 31 01:12:41 ota3g1 kernel: end_request: I/O error, dev sdi, sector 283337089 Oct 31 01:12:41 ota3g1 kernel: Buffer I/O error on device dm-16, logical block 0 Oct 31 01:12:41 ota3g1 kernel: lost page write due to I/O error on dm-16 Oct 31 01:12:41 ota3g1 kernel: sd 8:0:0:4: SCSI error: return code = 0x00010000 df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/cciss-root 4.9G 730M 3.9G 16% / /dev/mapper/cciss-home 9.7G 1.2G 8.1G 13% /home /dev/mapper/cciss-var 9.7G 494M 8.8G 6% /var /dev/mapper/cciss-usr 15G 2.6G 12G 19% /usr /dev/mapper/cciss-tmp 3.9G 153M 3.6G 5% /tmp /dev/sda1 996M 43M 902M 5% /boot tmpfs 5.9G 0 5.9G 0% /dev/shm /dev/mapper/cciss-product 25G 16G 7.4G 68% /product /dev/mapper/cciss-opt 20G 4.5G 14G 25% /opt /dev/mapper/dg_db1-vol_db1_system 18G 2.2G 15G 14% /database/OTADB/sys /dev/mapper/dg_db1-vol_db1_undo 18G 5.8G 12G 35% /database/OTADB/undo /dev/mapper/dg_db1-vol_db1_redo 8.9G 4.3G 4.2G 51% /database/OTADB/redo /dev/mapper/dg_db1-vol_db1_sgbd 8.9G 654M 7.8G 8% /database/OTADB/admin /dev/mapper/dg_db1-vol_db1_arch 98G 24G 69G 26% /database/OTADB/arch /dev/mapper/dg_db1-vol_db1_indexes 240G 14G 214G 6% /database/OTADB/index /dev/mapper/dg_db1-vol_db1_data 275G 47G 215G 18% /database/OTADB/data /dev/mapper/dg_dbrman-vol_db_rman 8.9G 351M 8.1G 5% /database/RMAN /dev/mapper/dg_app1-vol_app1 151G 113G 31G 79% /files/ota /etc/fstab /dev/cciss/root / ext3 defaults 1 1 /dev/cciss/home /home ext3 defaults 1 2 /dev/cciss/var /var ext3 defaults 1 2 /dev/cciss/usr /usr ext3 defaults 1 2 /dev/cciss/tmp /tmp ext3 defaults 1 2 LABEL=/boot /boot ext3 defaults 1 2 tmpfs /dev/shm tmpfs defaults 0 0 devpts /dev/pts devpts gid=5,mode=620 0 0 sysfs /sys sysfs defaults 0 0 proc /proc proc defaults 0 0 /dev/cciss/swap swap swap defaults 0 0 /dev/cciss/product /product ext3 defaults 1 2 /dev/cciss/opt /opt ext3 defaults 1 2 /dev/dg_db1/vol_db1_system /database/OTADB/sys ext3 defaults 1 2 /dev/dg_db1/vol_db1_undo /database/OTADB/undo ext3 defaults 1 2 /dev/dg_db1/vol_db1_redo /database/OTADB/redo ext3 defaults 1 2 /dev/dg_db1/vol_db1_sgbd /database/OTADB/admin ext3 defaults 1 2 /dev/dg_db1/vol_db1_arch /database/OTADB/arch ext3 defaults 1 2 /dev/dg_db1/vol_db1_indexes /database/OTADB/index ext3 defaults 1 2 /dev/dg_db1/vol_db1_data /database/OTADB/data ext3 defaults 1 2 /dev/dg_dbrman/vol_db_rman /database/RMAN ext3 defaults 1 2 /dev/dg_app1/vol_app1 /files/ota ext3 defaults 1 2 Thanks for all the help.

    Read the article

  • email-spec destroys my rake cucumber:all

    - by Leonardo Dario Perna
    This works fine: $ rake cucumber:all Then $ script/plugin install git://github.com/bmabey/email-spec.git remote: Counting objects: 162, done. remote: Compressing objects: 100% (130/130), done. remote: Total 162 (delta 18), reused 79 (delta 13) Receiving objects: 100% (162/162), 127.65 KiB | 15 KiB/s, done. Resolving deltas: 100% (18/18), done. From git://github.com/bmabey/email-spec * branch HEAD - FETCH_HEAD And $ script/generate email_spec exists features/step_definitions create features/step_definitions/email_steps.rb And I add 'require 'email_spec/cucumber' in /feature/support/env.rb so it looks somethinng like: require File.expand_path(File.dirname(__FILE__) + '/../../config/environment') require 'cucumber/rails/world' require 'cucumber/formatter/unicode' # Comment out this line if you don't want Cucumber Unicode support require 'email_spec/cucumber' and now: rake cucumber:all gives me this error: $ rake cucumber:all --trace (in /Users/leonardodarioperna/Projects/frestyl/frestyl) ** Invoke cucumber:all (first_time) ** Invoke cucumber:ok (first_time) ** Invoke db:test:prepare (first_time) ** Invoke db:abort_if_pending_migrations (first_time) ** Invoke environment (first_time) ** Execute environment ** Execute db:abort_if_pending_migrations ** Execute db:test:prepare ** Invoke db:test:load (first_time) ** Invoke db:test:purge (first_time) ** Invoke environment ** Execute db:test:purge ** Execute db:test:load ** Invoke db:schema:load (first_time) ** Invoke environment ** Execute db:schema:load ** Execute cucumber:ok /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby -I "/Library/Ruby/Gems/1.8/gems/cucumber-0.4.4/lib:lib" "/Library/Ruby/Gems/1.8/gems/cucumber-0.4.4/bin/cucumber" --profile default cucumber.yml was not found. Please refer to cucumber's documentation on defining profiles in cucumber.yml. You must define a 'default' profile to use the cucumber command without any arguments. Type 'cucumber --help' for usage. rake aborted! Command failed with status (1): [/System/Library/Frameworks/Ruby.framework/...] /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:995:in `sh' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:1010:in `call' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:1010:in `sh' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:1094:in `sh' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:1029:in `ruby' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:1094:in `ruby' /Library/Ruby/Gems/1.8/gems/cucumber-0.4.4/lib/cucumber/rake/task.rb:68:in `run' /Library/Ruby/Gems/1.8/gems/cucumber-0.4.4/lib/cucumber/rake/task.rb:138:in `define_task' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:636:in `call' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:636:in `execute' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:631:in `each' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:631:in `execute' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:597:in `invoke_with_call_chain' /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/monitor.rb:242:in `synchronize' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:590:in `invoke_with_call_chain' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:607:in `invoke_prerequisites' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:604:in `each' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:604:in `invoke_prerequisites' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:596:in `invoke_with_call_chain' /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/monitor.rb:242:in `synchronize' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:590:in `invoke_with_call_chain' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:583:in `invoke' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2051:in `invoke_task' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `top_level' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `each' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `top_level' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2023:in `top_level' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2001:in `run' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:1998:in `run' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/bin/rake:31 /usr/bin/rake:19:in `load' /usr/bin/rake:19 WHY? but the command: $ cucumber still works Any idea?

    Read the article

  • iPhone crash on CoreData save

    - by davetron5000
    This is a different situation than this question, as the solution provided doesn't work and the stack is different. Periodical crash when I save data using coredata. The stack trace isn't 100% clear on where this is happening, but I'm certain it's this routine that's being called. It's either the save: in this method or the one following. Code: -(void)saveWine { if ([self validInfo]) { Wine *wine = (Wine *)wineToEdit; if (wine == nil) { wine = (Wine *)[NSEntityDescription insertNewObjectForEntityForName:@"Wine" inManagedObjectContext:self.managedObjectContext]; } wine.uuid = [Utils createUUID]; wine.name = self.wineNameField.text; wine.vineyard = self.vineyardField.text; wine.vintage = [[self numberFormatter] numberFromString:self.vintageField.text]; wine.timeStamp = [NSDate date]; wine.rating = [NSNumber numberWithInt:self.ratingControl.selectedSegmentIndex]; wine.partnerRating = [NSNumber numberWithInt:self.partnerRatingControl.selectedSegmentIndex]; wine.varietal = self.currentVarietal; wine.tastingNotes = self.currentTastingNotes; wine.dateTasted = self.currentDateTasted; wine.tastingLocation = [[ReferenceDataAccessor defaultReferenceDataAccessor] addEntityForType:TASTING_LOCATION withName:self.currentWhereTasted]; id type = [[ReferenceDataAccessor defaultReferenceDataAccessor] entityForType:WINE_TYPE withOrdinal:self.typeControl.selectedSegmentIndex]; wine.type = type; NSError *error; NSLog(@"Saving %@",wine); if (![self.managedObjectContext save:&error]) { [Utils showAlertMessage:@"There was a problem saving your wine; try restarting the app" withTitle:@"Problem saving"]; NSLog(@"Error while saving new wine %@, %@", error, [error userInfo]); } } else { NSLog(@"ERROR - someone is calling saveWine with invalid info!!"); } } Code for addEntityForType:withName:: -(id)addEntityForType:(NSString *)type withName:(NSString *)name { if ([Utils isStringBlank:name]) { return nil; } id existing = [[ReferenceDataAccessor defaultReferenceDataAccessor] entityForType:type withName:name]; if (existing != nil) { NSLog(@"%@ with name %@ already exists",type,name); return existing; } NSManagedObject *newEntity = [NSEntityDescription insertNewObjectForEntityForName:type inManagedObjectContext:self.managedObjectContext]; [newEntity setValue:name forKey:@"name"]; NSError *error; if (![self.managedObjectContext save:&error]) { [Utils showAlertMessage:[NSString stringWithFormat:@"There was a problem saving a %@",type] withTitle:@"Database Probem"]; [Utils logErrorFully:error forOperation:[NSString stringWithFormat:@"saving new %@",type ]]; } return newEntity; } Stack trace: Thread 0 Crashed: 0 libSystem.B.dylib 0x311de2d4 __kill + 8 1 libSystem.B.dylib 0x311de2c4 kill + 4 2 libSystem.B.dylib 0x311de2b6 raise + 10 3 libSystem.B.dylib 0x311f2d72 abort + 50 4 libstdc++.6.dylib 0x301dea20 __gnu_cxx::__verbose_terminate_handler() + 376 5 libobjc.A.dylib 0x319a2594 _objc_terminate + 104 6 libstdc++.6.dylib 0x301dcdf2 __cxxabiv1::__terminate(void (*)()) + 46 7 libstdc++.6.dylib 0x301dce46 std::terminate() + 10 8 libstdc++.6.dylib 0x301dcf16 __cxa_throw + 78 9 libobjc.A.dylib 0x319a14c4 objc_exception_throw + 64 10 CoreData 0x3526e83e -[NSManagedObjectContext save:] + 1098 11 Wine Brain 0x0000651e 0x1000 + 21790 12 Wine Brain 0x0000525c 0x1000 + 16988 13 Wine Brain 0x00004894 0x1000 + 14484 14 Wine Brain 0x00008716 0x1000 + 30486 15 CoreFoundation 0x31477fe6 -[NSObject(NSObject) performSelector:withObject:withObject:] + 18 16 UIKit 0x338c14a6 -[UIApplication sendAction:to:from:forEvent:] + 78 17 UIKit 0x3395c7ae -[UIBarButtonItem(UIInternal) _sendAction:withEvent:] + 86 18 CoreFoundation 0x31477fe6 -[NSObject(NSObject) performSelector:withObject:withObject:] + 18 19 UIKit 0x338c14a6 -[UIApplication sendAction:to:from:forEvent:] + 78 20 UIKit 0x338c1446 -[UIApplication sendAction:toTarget:fromSender:forEvent:] + 26 21 UIKit 0x338c1418 -[UIControl sendAction:to:forEvent:] + 32 22 UIKit 0x338c116a -[UIControl(Internal) _sendActionsForEvents:withEvent:] + 350 23 UIKit 0x338c19c8 -[UIControl touchesEnded:withEvent:] + 336 24 UIKit 0x338b734e -[UIWindow _sendTouchesForEvent:] + 362 25 UIKit 0x338b6cc8 -[UIWindow sendEvent:] + 256 26 UIKit 0x338a1fc0 -[UIApplication sendEvent:] + 292 27 UIKit 0x338a1900 _UIApplicationHandleEvent + 5084 28 GraphicsServices 0x35d66efc PurpleEventCallback + 660 29 CoreFoundation 0x314656f8 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 20 30 CoreFoundation 0x314656bc __CFRunLoopDoSource1 + 160 31 CoreFoundation 0x31457f76 __CFRunLoopRun + 514 32 CoreFoundation 0x31457c80 CFRunLoopRunSpecific + 224 33 CoreFoundation 0x31457b88 CFRunLoopRunInMode + 52 34 GraphicsServices 0x35d664a4 GSEventRunModal + 108 35 GraphicsServices 0x35d66550 GSEventRun + 56 36 UIKit 0x338d5322 -[UIApplication _run] + 406 37 UIKit 0x338d2e8c UIApplicationMain + 664 38 Wine Brain 0x000021ba 0x1000 + 4538 39 Wine Brain 0x00002184 0x1000 + 4484 I have no idea why my app's memory locations aren't being symbolocated, but the code paths lead to only two manavedObjectContext save: calls. The time this happend, addEntityForType was called all the way through, creating a new object for the "whereTasted" entity, before the final save: on the entire wine object. When I go through the same procedure again, it works fine. This leads me to believe it's something to do with the app having been run for a while when adding a new location, but I'm not sure. Any thoughts on how I can debug this and get more info the next time this happens?

    Read the article

< Previous Page | 62 63 64 65 66 67 68 69 70 71 72 73  | Next Page >