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• Persistent static routes fail on MacOS 10.6.5 startup!

  - by verbalicious

  I'm unable to get static routes to persist a reboot on Mac OS 10.6.5. I've tried all of the methods prescribed in Google search results, and previous posts on this site. I've tried manually creating a launchd daemon, and used RouteSplit's launchd daemon to no avail. It's clear that the interface is not ready when these methods attempt to apply the route. This workstation in question is getting its IP from DHCP and probably hasn't gotten its DHCP lease when the command runs. We're able to apply the route by hand when logged in, but not through startup methods. Is there another way to apply this route by sneaking the command into something later, but before the login window appears to the user? Here is some relevant log info from system.log. You can see the "route: writing to routing socket: Network is unreachable" errors where my launchd script fires off. I've tried adding extra "sleep" and "ipconfig waitall" statements later in the script but this doesn't fly. Dec 15 19:30:41 localhost com.apple.launchd[1]: *** launchd[1] has started up. *** Dec 15 19:30:45 localhost mDNSResponder[18]: mDNSResponder mDNSResponder-258.13 (Oct 8 2010 17:10:30) starting Dec 15 19:30:47 localhost configd[15]: bootp_session_transmit: bpf_write(en1) failed: Network is down (50) Dec 15 19:30:47 localhost configd[15]: DHCP en1: INIT transmit failed Dec 15 19:30:47 localhost configd[15]: network configuration changed. Dec 15 19:30:47 Administrators-MacBook-Pro configd[15]: setting hostname to "Administrators-MacBook-Pro.local" Dec 15 19:30:47 Administrators-MacBook-Pro blued[16]: Apple Bluetooth daemon started Dec 15 19:30:52 Administrators-MacBook-Pro syslog[67]: routes.sh: Starting RouteSplit Dec 15 19:30:53 Administrators-MacBook-Pro com.apple.usbmuxd[41]: usbmuxd-207 built for iTunesTenOne on Oct 19 2010 at 13:50:35, running 64 bit Dec 15 19:30:54 Administrators-MacBook-Pro /System/Library/CoreServices/loginwindow.app/Contents/MacOS/loginwindow[50]: Login Window Application Started Dec 15 19:30:55 Administrators-MacBook-Pro bootlog[61]: BOOT_TIME: 1292459441 0 Dec 15 19:30:55 Administrators-MacBook-Pro syslog[86]: routes.sh: static route 192.168.0.0/23 192.168.2.2 Dec 15 19:30:55 Administrators-MacBook-Pro net.routes.static[65]: route: writing to routing socket: Network is unreachable Dec 15 19:30:55 Administrators-MacBook-Pro net.routes.static[65]: add net 192.168.0.0: gateway 192.168.2.2: Network is unreachable Dec 15 19:30:57 Administrators-MacBook-Pro org.apache.httpd[38]: httpd: Could not reliably determine the server's fully qualified domain name, using Administrators-MacBook-Pro.local for ServerName Dec 15 19:30:58 Administrators-MacBook-Pro loginwindow[50]: Login Window Started Security Agent Dec 15 19:30:58 Administrators-MacBook-Pro WindowServer[89]: kCGErrorFailure: Set a breakpoint @ CGErrorBreakpoint() to catch errors as they are logged. Dec 15 19:30:58 Administrators-MacBook-Pro com.apple.WindowServer[89]: Wed Dec 15 19:30:58 Administrators-MacBook-Pro.local WindowServer[89] <Error>: kCGErrorFailure: Set a breakpoint @ CGErrorBreakpoint() to catch errors as they are logged. Dec 15 19:31:18 Administrators-MacBook-Pro configd[15]: network configuration changed. Dec 15 19:31:19 administrators-macbook-pro configd[15]: setting hostname to "administrators-macbook-pro.local" Dec 15 19:31:25 administrators-macbook-pro _mdnsresponder[121]: /usr/libexec/ntpd-wrapper: scutil key State:/Network/Global/DNS not present after 30 seconds Dec 15 19:31:25 administrators-macbook-pro _mdnsresponder[124]: sntp options: a=2 v=1 e=0.100 E=5.000 P=2147483647.000 Dec 15 19:31:25 administrators-macbook-pro _mdnsresponder[124]: d=15 c=5 x=0 op=1 l=/var/run/sntp.pid f= time.apple.com Dec 15 19:31:25 administrators-macbook-pro _mdnsresponder[124]: sntp: getaddrinfo(hostname, ntp) failed with nodename nor servname provided, or not known Dec 15 19:31:27 administrators-macbook-pro configd[15]: network configuration changed. Dec 15 19:31:27 Administrators-MacBook-Pro configd[15]: setting hostname to "Administrators-MacBook-Pro.local" Dec 15 19:31:27 Administrators-MacBook-Pro ntpd[37]: Cannot find existing interface for address 17.151.16.20 Dec 15 19:31:27 Administrators-MacBook-Pro ntpd_initres[125]: ntpd indicates no data available! Dec 15 19:31:31 Administrators-MacBook-Pro sshd[128]: USER_PROCESS: 133 ttys000 Dec 15 19:31:37 Administrators-MacBook-Pro sudo[138]: administrator : TTY=ttys000 ; PWD=/Users/administrator ; USER=root ; COMMAND=/usr/bin/less /var/log/system.log ``You can see the following line in /var/log/kernel.log that shows the en0 interface coming up: Dec 15 19:30:51 Administrators-MacBook-Pro kernel[0]: Ethernet [AppleBCM5701Ethernet]: Link up on en0, 1-Gigabit, Full-duplex, No flow-control, Debug [796d,0f01,0de1,0300,c1e1,3800]

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• Troubleshooting PHP email sending?

  - by darkAsPitch

  I created a website that occasionally emails users when they register/change their password/etc. Every other person however cannot or does not receive the emails. They are telling me that they are not even hitting their spam folders. I don't know a ton about MX records or email sending, but when I "Edit DNS Zone" for this domain in particular there is 1 MX record listed there. How do you go about troubleshooting botched PHP mail actions? UPDATE: Here is my super-simple php mailing code: $subject = "Subject Here"; $message = "Emails Message"; $to = $verified_user_data["email_address"]; $headers = "From: [email protected]\r\n" . "Reply-To: [email protected]\r\n" . "X-Mailer: PHP/" . phpversion(); //returns true on success, false on failure $email_result = mail($to, $subject, $message, $headers); re: "are you saying that some do and some do not?" @ Jacob Yes, basically. I send the emails containing the user's login username/password using similar code above. And I sell to fairly tech-savvy people. About 50% of the time, my customers claim they cannot find their welcome emails in their inbox OR in their spam box. It's as if it never arrived. I have the largest problem with Yahoo email addresses accepting my emails or so it seems. re: "The MX record at your end doesn't factor in, although the SPF record (or lack of it) will. How much access and control do you have on the server itself?" @ John Gardeniers I rent a dedicated server from Codero. Running CentOS 5, WHM + cPanel. I have full root access to the entire thing. Don't know much about MX records and/or SPF records. I just want the PHP mail function to work. It doesn't say much about that on the php mail function's help page. re: "What are you using for the SMTP server?" @ JonLim No idea. I use the code above when I need to fire off an email to a loyal customer, and that's it. Do I need to be worrying about SMTP servers? re: "Could be many, many things. Can you describe how you're sending mail in your code? i.e. are you relaying off of another mail server somewhere, using the local sendmail or postfix? Any consistency in domains that can/cannot receive email? Do you have a PTR record setup from the IP address that you're sending mail out as? What about SPF records?" @ gravyface I just described my simple code above! I believe I have been having the most trouble with Yahoo domains, however "independent" domains (probably running spamassasin) ex. [email protected] as opposed to [email protected] seem to give a lot of trouble as well. I do not know if I have a PTR record setup from the IP address I'm sending my mail from. It's probably the same IP address that I setup my domain on, because I didn't do anything extra special. No idea about SPF records either, where can I go to create one? Side Note: It's a crying shame what havoc the spammers have brought upon our beloved email system.

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• How to configure DNS Server on Fedora

  - by user863873

  I want to learn how to configure my home PC server into a web server with domain and host. My IP is 109.99.141.133 and now points to a phpinfo page host on my home server. My registed domain is: anunta-anunturi.ro I searched for a tutorial and I've read that I have to configure /etc/named.conf and the file sources for the new zone that I create. So, from the tutorials, my /etc/named.conf looks like this: // // named.conf // // Provided by Red Hat bind package to configure the ISC BIND named(8) DNS // server as a caching only nameserver (as a localhost DNS resolver only). // // See /usr/share/doc/bind*/sample/ for example named configuration files. // options { listen-on port 53 { 127.0.0.1; }; listen-on-v6 port 53 { ::1; }; directory "/var/named"; dump-file "/var/named/data/cache_dump.db"; statistics-file "/var/named/data/named_stats.txt"; memstatistics-file "/var/named/data/named_mem_stats.txt"; allow-query { localhost; }; recursion yes; dnssec-enable yes; dnssec-validation yes; dnssec-lookaside auto; /* Path to ISC DLV key */ bindkeys-file "/etc/named.iscdlv.key"; managed-keys-directory "/var/named/dynamic"; }; logging { channel default_debug { file "data/named.run"; severity dynamic; }; }; zone "anunta-anunturi.ro" IN { type master; file "/etc/anunta-anunturi.db"; }; zone "." IN { type hint; file "named.ca"; }; include "/etc/named.rfc1912.zones"; include "/etc/named.root.key"; My /etc/anunta-anunturi.db file looks like this — I'm not sure if this is okay, or if it's the easy one. $TTL 86400 anunta-anunturi.ro. IN SOA serveur.anunta-anunturi.ro. root.serveur.anunta-anunturi.ro. ( 1997022700 ; Serial 28800 ; Refresh 14400 ; Retry 3600000 ; Expire 86400 ) ; Minumun IN NS serveur.anunta-anunturi.ro. IN MX 10 mail.anunta-anunturi.ro. serveur.anunta-anunturi.ro. IN A 192.168.1.37 www.anunta-anunturi.ro. IN A 192.168.1.37 mail.anunta-anunturi.ro. IN A 192.168.1.37 Extra info: At home I receive internet from my ISP through a router. My home PC and server recieve their IP automatically from the router when I start/restart. In my local home network, my server receives the IP 192.168.1.37 from the router. When I enter 109.99.141.133 in my browser, it points to the rooter that forwards port 80 to local IP 192.168.1.37 (my home server) Questions: Are my two files good? What/where is my nameserver that I need to copy/paste to my top level domain (where I registered my domain: rotld.ro)?

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• Excel: conditionally format a cell using the format of another, content-matching cell

  - by Eric A. Meyer

  I have an Excel spreadsheet where I’d like to be able to create a “key” of formatted cells with unique values, and then in another sheet format cells using the key formatting. So for example, my key is as follows, with one value per cell and the visual formatting indicated in parentheses: A (red background) B (green background) C (blue background) So that’s on one sheet (or in a remote corner of the current sheet—whichever is better). Then, in an area that I mark for conditional formatting, I can type one of those three letters and have the cell where I typed it visually formatted according to the key. So if I type a “B” into one of the conditionally formatted cells, it gets a green background. (Note that I’m using backgrounds here solely for ease of explanation: ideally I want to have all visual formatting copied over, whether it’s foreground color, background color, font weight, borders, or whatever. But I’ll take what I can get, obviously.) And—just to make it extra-tricky—if I change the formatting in the key, that change should be reflected in cells that reference the key. Thus, if I change the “B” formatting in the key from a green background to a purple background, any “B” in the main sheet should switch to the new color. Similarly, it should be possible to add or remove values from the key and have those changes applied to the main data set. I’m okay with the formatting-update-on-key-change being triggered by clicking a button or something. I suspect that if any of this is possible it will require VBA, but I’ve never used it so I’ve no idea where to start if that’s the case. I’m hoping it’s possible without VBA. I know it’s possible to just use multiple conditional formats, but my use case here is that I’m trying to create the above-described capability for someone who isn’t conversant with conditional formatting. I’d like to let them be able to define a key, update it if necessary, and keep on truckin’ without me having to rewrite the spreadsheet’s formatting rules for them. --- UPDATE --- So I think I was a bit unclear about my original request. Let me try again with an image. The image shows the “key” on the left, where values and styles are defined using keyboard and mouse input. On the right, you see the data that should be formatted to match the key. Thus if I type a “C” into a cell in the Data area, it should be blue-backed. Furthermore, if I change the formatting of “C” in the Key to have a purple background, all the “C” cells should switch from blue to purple. For further craziness, if I add more to the Key (say, “D” with a yellow background) then any “D” cells will be styled to match; if I remove a Key entry, then matching values in the Data area should revert to default styling. So. Is that more clear? Is it possible, in whole or in part? I don’t have to use conditional formatting for this; in fact, at this point I suspect I probably shouldn’t. But I’m open to any approach!

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• Crash in audio resampler with some audio rates - FFMPEG PHP ( Solved! )

  - by Olaf Erlandsen

  i have a problem with this command( FFMPEG PHP ): Command: ffmpeg -i 62f76f050494f0ed6a5997967c00c0c0.wmv -ss 0 -t 99 -y -ar 44100 -async 44100 -r 29.970 -ac 2 -qscale 5 -f flv 62f76f050494f0ed6a5997967c00c0c0.flv Output: FFmpeg version 0.6.5, Copyright (c) 2000-2010 the FFmpeg developers built on Jan 29 2012 17:52:15 with gcc 4.4.5 20110214 (Red Hat 4.4.5-6) configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --mandir=/usr/share/man --incdir=/usr/include --disable-avisynth --extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -fPIC' --enable-avfilter --enable-avfilter-lavf --enable-libdc1394 --enable-libdirac --enable-libfaac --enable-libfaad --enable-libfaadbin --enable-libgsm --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libx264 --enable-gpl --enable-nonfree --enable-postproc --enable-pthreads --enable-shared --enable-swscale --enable-vdpau --enable-version3 --enable-x11grab libavutil 50.15. 1 / 50.15. 1 libavcodec 52.72. 2 / 52.72. 2 libavformat 52.64. 2 / 52.64. 2 libavdevice 52. 2. 0 / 52. 2. 0 libavfilter 1.19. 0 / 1.19. 0 libswscale 0.11. 0 / 0.11. 0 libpostproc 51. 2. 0 / 51. 2. 0 [asf @ 0xe81670]max_analyze_duration reached Input #0, asf, from '/var/www/resources/tmp/62f76f050494f0ed6a5997967c00c0c0.wmv': Metadata: WMFSDKVersion : 12.0.7601.17514 WMFSDKNeeded : 0.0.0.0000 IsVBR : 0 Duration: 00:00:50.87, bitrate: 2467 kb/s Stream #0.0: Audio: wmapro, 44100 Hz, stereo, flt, 256 kb/s Stream #0.1: Video: vc1, yuv420p, 950x460 [PAR 1:1 DAR 95:46], 25 fps, 25 tbr, 1k tbn, 25 tbc Output #0, flv, to '/var/www/resources/media/62f76f050494f0ed6a5997967c00c0c0.flv': Metadata: encoder : Lavf52.64.2 Stream #0.0: Video: flv, yuv420p, 950x460 [PAR 1:1 DAR 95:46], q=2-31, 200 kb/s, 1k tbn, 29.97 tbc Stream #0.1: Audio: libmp3lame, 11025 Hz, stereo, s16, 64 kb/s Stream mapping: Stream #0.1 -> #0.0 Stream #0.0 -> #0.1 Press [q] to stop encoding frame= 72 fps= 0 q=5.0 size= 0kB time=10.91 bitrate= 0.0kbits/s Multiple frames in a packet from stream 0 Warning, using s16 intermediate sample format for resampling frame= 141 fps=139 q=5.0 size= 103kB time=8.15 bitrate= 103.2kbits/s frame= 220 fps=144 q=5.0 size= 875kB time=10.92 bitrate= 656.6kbits/s frame= 290 fps=143 q=5.0 size= 1525kB time=13.74 bitrate= 909.1kbits/s frame= 356 fps=141 q=5.0 size= 2153kB time=15.99 bitrate=1103.1kbits/s frame= 427 fps=141 q=5.0 size= 2847kB time=18.70 bitrate=1247.0kbits/s frame= 497 fps=141 q=5.0 size= 3771kB time=21.16 bitrate=1460.0kbits/s frame= 575 fps=142 q=5.0 size= 4695kB time=24.61 bitrate=1563.0kbits/s frame= 639 fps=141 q=5.0 size= 5301kB time=26.80 bitrate=1620.2kbits/s frame= 703 fps=139 q=5.0 size= 5829kB time=29.36 bitrate=1626.2kbits/s frame= 774 fps=139 q=5.0 size= 6659kB time=32.39 bitrate=1684.0kbits/s frame= 842 fps=139 q=5.0 size= 7915kB time=35.27 bitrate=1838.6kbits/s frame= 911 fps=139 q=5.0 size= 9011kB time=37.98 bitrate=1943.4kbits/s frame= 975 fps=138 q=5.0 size= 9788kB time=40.59 bitrate=1975.3kbits/s frame= 1041 fps=138 q=5.0 size= 10904kB time=43.83 bitrate=2037.9kbits/s frame= 1115 fps=138 q=5.0 size= 11795kB time=46.24 bitrate=2089.8kbits/s frame= 1183 fps=138 q=5.0 size= 12678kB time=48.74 bitrate=2130.7kbits/s frame= 1247 fps=137 q=5.0 size= 13964kB time=51.36 bitrate=2227.5kbits/s frame= 1271 fps=136 q=5.0 Lsize= 15865kB time=58.86 bitrate=2208.1kbits/s video:15366kB audio:462kB global headers:0kB muxing overhead 0.238956% Problem: Warning, using s16 intermediate sample format for resampling I've also tried changing the parameter From -ar 44100 to -ar 11025 Thanks! Solution: Read this link: http://en.wikipedia.org/wiki/MP3#Bit_rate

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• How to transfer data between two networks efficiently

  - by Tono Nam

  I would like to transfer files between two places over the internet. Right now I have a VPN and I am able to browse, download and transfer files. So my question is not really how to transfer the files; Instead, I would like to use the most efficient approach because the two places constantly share a lot of data. The reason why I want to get rid of the VPN is because it is two slow. Having high upload speed is very expensive/impossible in residential places so I would like to use a different approach. I was thinking about using programs such as http://www.dropbox.com . The problem with Dropbox is that the free version comes with only 2 GB of storage. I think the deals they offer are OK and I might be willing to pay to get that increase in speed. But I am concerned with the speed of transferring data. Dropbox will upload the file to their server then send it from the server to the other location. I would like it to be even faster. Anyway I was thinking why not create a program myself. This is the algorithm that I was thinking of. Let me know if it sounds too crazy. (Remember my goal is to transfer files as fast as possible) Things that I will use in this algorithm: Server on the internet called S (Has fast download and upload speed. I pay to host a website and some services in there. I want to take advantage of it.) Client A at location 1 Client B at location 2 So lets say at location 1, 20 large files are created and need to be transferred to location 2. Client A compresses the files with the highest compression ratio possible. Client A starts sending data via UDP to client B. Because I am using UDP I will include the sequence number on each packet. Have server S help speed up things. For example every time a packet is lost we can use Server S to inform client A that it needs to resend a packet. Anyways I think this approach will increase the transfer rate. I do not know if it is possible to start sending data while it is being compressed. Or if it is possible to start decompressing data even if we are not done receiving the whole file. Maybe it will be faster to start sending the files right away without compressing. If I knew that I will always be sending large text files then I will obviously use the compression. I need this as a general algorithm. So I guess my question is could I increase performance by using UDP instead of TCP and by using an extra server to keep track of lost packets? And how should I compress files before sending? Compressing a 1 GB file with the highest compression ratio takes about 1 hour! I would like to take advantage of that time by sending it as it is being compressed.

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• How to transfer data between two netowks efficiently

  - by Tono Nam

  I will like to transfer files between two places over the internet. Right now I have a VPN and I am able to browse, download and transfer files. So my question is not really how to transfer the files; Instead, I will like to use the most efficient approach because the two places constantly share a lot of data. The reason why I want to get rid of the vpn is because it is two slow. Having high upload speed is very expensive/impossible on residential places so I will like to use a different approach. I was thinking about using programs such as http://www.dropbox.com . The problem with dropbox is it only enables 2 GB of storage in order for it to be free. I think the deals they offer are ok and I might be willing to pay to get that increase in speed. But I am concerned with the speed of transferring data. Dropbox will upload the file to their server then send it from the server to the other location. I will like it even faster lol. Anyways I was thinking why not create a program my self. This is the algorithm that I was thinking let me know if it sounds to crazy. (remember my goal is to transfer files as fastest as possible) Things that I will use in this algorithm: Server on the internet called S ( has fast download and upload speed. I pay to host a website and some services in there. I want to take advantage of it) Client A on location 1 Client B on location 2 So lets say on location 1 20 large files are created and need to be transferred to location 2. Client A compresses the files with the highest compression ratio possible. Client A starts sending data via UDP to client B. Because I am using UDP I will include the sequence number on each package. Have server S help speed up things. For example every time a package is lost we can use Server S to inform client A that it needs to resend a package. Anyways I think this approach will increase the transfer rate. I do not know if it is possible to start sending data meanwhile it is being compressed. Also if it is possible to start decompressing data even if we are not done receiving all the info. Maybe it will be faster to start sending the files right away without compressing. If I knew that I will always be sending large text files then I will obviously use the compression. I need this as a general algorithm. So i guess my question is should using UDP over TCP could increase performance by using an extra server to keep track of lost packages? and How should I compress files before sending? compressing a 1 GB file with the highest compression ration takes about 1 hour! I will like to take advantage of that time by sending it meanwhile it is compressed.

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• CentOS 6.2 Bridge Setup for KVM

  - by Gaia

  I'm trying to set up bridged networking with KVM on CentOS 6.2 to no avail. There are plenty of docs and tutorials about it, but they all seem to conflict or don't provide info specific enough to my situation. I just don't get it. I access the host via public IP "xxx.xxx.128.58". All other available IPs (/29) should be bridged and made available to the only KVM guest (running a public facing LAMP stack) that will be setup on this machine. The amazingly unhelpful NOC people assigned the extra IPs to eth1. Is this correct? Should br0 bridge to eth0 or eth1? How do I set this up? Here is the relevant info: eth0 Link encap:Ethernet HWaddr 00:25:90:68:FE:BC inet6 addr: fe80::225:90ff:fe68:febc/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:763 errors:0 dropped:0 overruns:0 frame:0 TX packets:8 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:550811 (537.9 KiB) TX bytes:648 (648.0 b) Memory:fb980000-fba00000 eth1 Link encap:Ethernet HWaddr 00:25:90:68:FE:BD inet addr:xxx.xxx.128.58 Bcast:xxx.xxx.128.63 Mask:255.255.255.248 inet6 addr: fe80::225:90ff:fe68:febd/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1806 errors:0 dropped:0 overruns:0 frame:0 TX packets:1505 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:133166 (130.0 KiB) TX bytes:106070 (103.5 KiB) Memory:fb900000-fb980000 eth1:0 Link encap:Ethernet HWaddr 00:25:90:68:FE:BD inet addr:xxx.xxx.128.59 Bcast:xxx.xxx.128.63 Mask:255.255.255.248 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Memory:fb900000-fb980000 eth1:1 Link encap:Ethernet HWaddr 00:25:90:68:FE:BD inet addr:xxx.xxx.128.60 Bcast:xxx.xxx.128.63 Mask:255.255.255.248 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Memory:fb900000-fb980000 eth1:2 Link encap:Ethernet HWaddr 00:25:90:68:FE:BD inet addr:xxx.xxx.128.61 Bcast:xxx.xxx.128.63 Mask:255.255.255.248 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Memory:fb900000-fb980000 eth1:3 Link encap:Ethernet HWaddr 00:25:90:68:FE:BD inet addr:xxx.xxx.128.62 Bcast:xxx.xxx.128.63 Mask:255.255.255.248 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Memory:fb900000-fb980000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) virbr0 Link encap:Ethernet HWaddr 52:54:00:62:55:68 inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) > cat /etc/sysconfig/network NETWORKING=yes HOSTNAME=XXXX.domain.com > brctl show bridge name bridge id STP enabled interfaces br0 8000.00259068febc no eth0 virbr0 8000.525400625568 yes virbr0-nic > ls -fl | grep ifcfg -rw-r--r-- 1 root root 198 Jun 7 10:58 ifcfg-eth0 -rw-r--r--. 1 root root 254 Oct 7 2011 ifcfg-lo -rw-r--r-- 1 root root 77 Jun 6 18:51 ifcfg-eth1-range0 -rw-r--r-- 1 root root 168 Jun 6 18:50 ifcfg-eth1 > cat ifcfg-eth0 DEVICE="eth0" BOOTPROTO="static" BRIDGE="br0" HWADDR="00:25:90:68:FE:BC" IPV6INIT="yes" MTU="1500" NM_CONTROLLED="yes" ONBOOT="yes" TYPE="Ethernet" IPADDR="yyy.yyy.216.131" NETMASK="255.255.255.128" > cat ifcfg-eth1 DEVICE="eth1" HWADDR="00:25:90:68:FE:BD" NM_CONTROLLED="yes" ONBOOT="yes" BOOTPROTO="static" IPADDR="xxx.xxx.128.58" NETMASK="255.255.255.248" GATEWAY="xxx.xxx.128.57" > cat ifcfg-eth1-range0 IPADDR_START="xxx.xxx.128.59" IPADDR_END="xxx.xxx.128.62" CLONENUM_START="0" Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface xxx.xxx.128.56 * 255.255.255.248 U 0 0 0 eth1 192.168.122.0 * 255.255.255.0 U 0 0 0 virbr0 link-local * 255.255.0.0 U 1003 0 0 eth1 default xxx.xxx.128.57 0.0.0.0 UG 0 0 0 eth1

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• UFW as an active service on Ubuntu

  - by lamcro

  Every time I restart my computer, and check the status of the UFW firewall (sudo ufw status), it is disabled, even if I then enable and restart it. I tried putting sudo ufw enable as one of the startup applications but it asks for the sudo password every time I log on, and I'm guessing it does not protect anyone else who logs on my computer. How can I setup ufw so it is activated when I turn on my computer, and protects all accounts? Update I just tried /etc/init.d/ufw start, and it activated the firewall. Then I restarted the computer, and again it was disabled. content of /etc/ufw/ufw.conf # /etc/ufw/ufw.conf # # set to yes to start on boot ENABLED=yes # set to one of 'off', 'low', 'medium', 'high' LOGLEVEL=full content of /etc/default/ufw # /etc/default/ufw # # Set to yes to apply rules to support IPv6 (no means only IPv6 on loopback # accepted). You will need to 'disable' and then 'enable' the firewall for # the changes to take affect. IPV6=no # Set the default input policy to ACCEPT, ACCEPT_NO_TRACK, DROP, or REJECT. # ACCEPT enables connection tracking for NEW inbound packets on the INPUT # chain, whereas ACCEPT_NO_TRACK does not use connection tracking. Please note # that if you change this you will most likely want to adjust your rules. DEFAULT_INPUT_POLICY="DROP" # Set the default output policy to ACCEPT, ACCEPT_NO_TRACK, DROP, or REJECT. # ACCEPT enables connection tracking for NEW outbound packets on the OUTPUT # chain, whereas ACCEPT_NO_TRACK does not use connection tracking. Please note # that if you change this you will most likely want to adjust your rules. DEFAULT_OUTPUT_POLICY="ACCEPT" # Set the default forward policy to ACCEPT, DROP or REJECT. Please note that # if you change this you will most likely want to adjust your rules DEFAULT_FORWARD_POLICY="DROP" # Set the default application policy to ACCEPT, DROP, REJECT or SKIP. Please # note that setting this to ACCEPT may be a security risk. See 'man ufw' for # details DEFAULT_APPLICATION_POLICY="SKIP" # By default, ufw only touches its own chains. Set this to 'yes' to have ufw # manage the built-in chains too. Warning: setting this to 'yes' will break # non-ufw managed firewall rules MANAGE_BUILTINS=no # # IPT backend # # only enable if using iptables backend IPT_SYSCTL=/etc/ufw/sysctl.conf # extra connection tracking modules to load IPT_MODULES="nf_conntrack_ftp nf_nat_ftp nf_conntrack_irc nf_nat_irc" Update Followed your advise and ran update-rc.d with no luck. lester@mcgrath-pc:~$ sudo update-rc.d ufw defaults update-rc.d: warning: /etc/init.d/ufw missing LSB information update-rc.d: see <http://wiki.debian.org/LSBInitScripts> Adding system startup for /etc/init.d/ufw ... /etc/rc0.d/K20ufw -> ../init.d/ufw /etc/rc1.d/K20ufw -> ../init.d/ufw /etc/rc6.d/K20ufw -> ../init.d/ufw /etc/rc2.d/S20ufw -> ../init.d/ufw /etc/rc3.d/S20ufw -> ../init.d/ufw /etc/rc4.d/S20ufw -> ../init.d/ufw /etc/rc5.d/S20ufw -> ../init.d/ufw lester@mcgrath-pc:~$ ls -l /etc/rc?.d/*ufw lrwxrwxrwx 1 root root 13 2009-12-20 20:34 /etc/rc0.d/K20ufw -> ../init.d/ufw lrwxrwxrwx 1 root root 13 2009-12-20 20:34 /etc/rc1.d/K20ufw -> ../init.d/ufw lrwxrwxrwx 1 root root 13 2009-12-20 20:34 /etc/rc2.d/S20ufw -> ../init.d/ufw lrwxrwxrwx 1 root root 13 2009-12-20 20:34 /etc/rc3.d/S20ufw -> ../init.d/ufw lrwxrwxrwx 1 root root 13 2009-12-20 20:34 /etc/rc4.d/S20ufw -> ../init.d/ufw lrwxrwxrwx 1 root root 13 2009-12-20 20:34 /etc/rc5.d/S20ufw -> ../init.d/ufw lrwxrwxrwx 1 root root 13 2009-12-20 20:34 /etc/rc6.d/K20ufw -> ../init.d/ufw

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• Debian Lenny to Debian Squeeze upgrade problems

  - by Roland Soós

  Hi! Yesterday I made a dist-upgrade on my Debian Lenny server. I thought it will be easy as an usual upgrade, but it's not. I got a lot of problem after the update: # apt-get upgrade Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these. The following packages have unmet dependencies: linux-image-2.6-amd64 : Depends: linux-image-2.6.32-5-amd64 but it is not installed E: Unmet dependencies. Try using -f. Then I tried the suggestion: # apt-get -f install Reading package lists... Done Building dependency tree Reading state information... Done Correcting dependencies... Done The following packages were automatically installed and are no longer required: libio-compress-base-perl libatk1.0-0 libts-0.0-0 libmime-types-perl libc-client2007b libgtk2.0-common libxfixes3 libgsf-1-common hicolor-icon-theme libfile-remove-perl libxcomposite1 libltdl3-dev libneon27 libmd5-perl libwmf0.2-7 libilmbase6 libatk1.0-data djvulibre-desktop libdirectfb-1.0-0 fam libxinerama1 libcroco3 libopenexr6 libgsf-1-114 libmail-box-perl libdjvulibre21 openssl-blacklist librsvg2-2 libio-compress-zlib-perl libsysfs2 libbeecrypt6 libxdamage1 libobject-realize-later-perl libuser-identity-perl libgtk2.0-bin libxi6 libxcursor1 portmap libxrandr2 libgtk2.0-0 Use 'apt-get autoremove' to remove them. The following extra packages will be installed: linux-image-2.6.32-5-amd64 Suggested packages: linux-doc-2.6.32 The following NEW packages will be installed: linux-image-2.6.32-5-amd64 0 upgraded, 1 newly installed, 0 to remove and 121 not upgraded. 98 not fully installed or removed. Need to get 0 B/28.6 MB of archives. After this operation, 103 MB of additional disk space will be used. Do you want to continue [Y/n]? y perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = (unset), LC_ALL = (unset), LANG = "hu_HU.UTF-8" are supported and installed on your system. perl: warning: Falling back to the standard locale ("C"). locale: Cannot set LC_CTYPE to default locale: No such file or directory locale: Cannot set LC_ALL to default locale: Nincs ilyen f?jl vagy k?nyvt?r Preconfiguring packages ... (Reading database ... 37915 files and directories currently installed.) Unpacking linux-image-2.6.32-5-amd64 (from .../linux-image-2.6.32-5-amd64_2.6.32-30_amd64.deb) ... locale: Cannot set LC_CTYPE to default locale: No such file or directory locale: Cannot set LC_ALL to default locale: Nincs ilyen f?jl vagy k?nyvt?r dpkg: error processing /var/cache/apt/archives/linux-image-2.6.32-5-amd64_2.6.32-30_amd64.deb (--unpack): failed in write on buffer copy for backend dpkg-deb during `./lib/modules/2.6.32-5-amd64/kernel/sound/pci/hda/snd-hda-codec-realtek.ko': No space left on device configured to not write apport reports dpkg-deb: subprocess paste killed by signal (Broken pipe) locale: Cannot set LC_CTYPE to default locale: No such file or directory locale: Cannot set LC_ALL to default locale: Nincs ilyen f?jl vagy k?nyvt?r Running postrm hook script /sbin/update-grub. Searching for GRUB installation directory ... found: /boot/grub Searching for default file ... found: /boot/grub/default Testing for an existing GRUB menu.lst file ... found: /boot/grub/menu.lst Searching for splash image ... none found, skipping ... Found kernel: /boot/vmlinuz-2.6.26-2-amd64 Updating /boot/grub/menu.lst ... done Examining /etc/kernel/postrm.d . run-parts: executing /etc/kernel/postrm.d/initramfs-tools 2.6.32-5-amd64 /boot/vmlinuz-2.6.32-5-amd64 Errors were encountered while processing: /var/cache/apt/archives/linux-image-2.6.32-5-amd64_2.6.32-30_amd64.deb E: Sub-process /usr/bin/dpkg returned an error code (1) # dpkg-reconfigure locales perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = (unset), LC_ALL = (unset), LANG = "hu_HU.UTF-8" are supported and installed on your system. perl: warning: Falling back to the standard locale ("C"). locale: Cannot set LC_CTYPE to default locale: No such file or directory locale: Cannot set LC_ALL to default locale: Nincs ilyen f?jl vagy k?nyvt?r /usr/sbin/dpkg-reconfigure: locales is broken or not fully installed Then I stucked. Do you have any idea how could I solve this?

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• Incorrect gzipping of http requests, can't find who's doing it

  - by Ned Batchelder

  We're seeing some very strange mangling of HTTP responses, and we can't figure out what is doing it. We have an app server handling JSON requests. Occasionally, the response is returned gzipped, but with incorrect headers that prevent the browser from interpreting it correctly. The problem is intermittent, and changes behavior over time. Yesterday morning it seemed to fail 50% of the time, and in fact, seemed tied to one of our two load-balanced servers. Later in the afternoon, it was failing only 20 times out of 1000, and didn't correlate with an app server. The two app servers are running Apache 2.2 with mod_wsgi and a Django app stack. They have identical Apache configs and source trees, and even identical packages installed on Red Hat. There's a hardware load balancer in front, I don't know the make or model. Akamai is also part of the food chain, though we removed Akamai and still had the problem. Here's a good request and response: * Connected to example.com (97.7.79.129) port 80 (#0) > POST /claim/ HTTP/1.1 > User-Agent: curl/7.19.7 (x86_64-pc-linux-gnu) libcurl/7.19.7 OpenSSL/0.9.8k zlib/1.2.3.3 libidn/1.15 > Host: example.com > Accept: */* > Referer: http://example.com/apps/ > Accept-Encoding: gzip,deflate > Content-Length: 29 > Content-Type: application/x-www-form-urlencoded > } [data not shown] < HTTP/1.1 200 OK < Server: Apache/2 < Content-Language: en-us < Content-Encoding: identity < Content-Length: 47 < Content-Type: application/x-javascript < Connection: keep-alive < Vary: Accept-Encoding < { [data not shown] * Connection #0 to host example.com left intact * Closing connection #0 {"msg": "", "status": "OK", "printer_name": ""} And here's a bad one: * Connected to example.com (97.7.79.129) port 80 (#0) > POST /claim/ HTTP/1.1 > User-Agent: curl/7.19.7 (x86_64-pc-linux-gnu) libcurl/7.19.7 OpenSSL/0.9.8k zlib/1.2.3.3 libidn/1.15 > Host: example.com > Accept: */* > Referer: http://example.com/apps/ > Accept-Encoding: gzip,deflate > Content-Length: 29 > Content-Type: application/x-www-form-urlencoded > } [data not shown] < HTTP/1.1 200 OK < Server: Apache/2 < Content-Language: en-us < Content-Encoding: identity < Content-Type: application/x-javascript < Content-Encoding: gzip < Content-Length: 59 < Connection: keep-alive < Vary: Accept-Encoding < X-N: S < { [data not shown] * Connection #0 to host example.com left intact * Closing connection #0 ?V?-NW?RPR?QP*.I,)-???A??????????T??Z? ??/ There are two things to notice about the bad response: It has two Content-Encoding headers, and the browsers seem to use the first. So they see an identity encoding header, and gzipped content, so they can't interpret the response. The bad response has an extra "X-N: S" header. Perhaps if I could find out what intermediary adds "X-N: S" headers to responses, I could track down the culprit...

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• Performing mechanical movements using computer

  - by Vi

  How to make a computer (in particular, my laptop) to perform some mechanical movements without buying anything $5, soldering things inside computer or creating big sophisticated circuits? Traditionally CD-ROM tray is used to make computer do some movement IRL by, for example, SSH command, but in laptop tray is one-shot (unless manually reloaded) and also not very comfortable [mis]usage. Some assistance circuits can be in use too, but not complex. For example, there is a little motor that can work on USB power. Devices in my computer: DVD-ROM tray: one-time push. USB power: continuous power to the motor or LEDS or relay that turns on something powerful. Audio card. 3 outputs (modprobe alsa model=test can set Mic and Line-in as additional output). One controllable DC output (microphone) that can power up LED and some electronic (may be even mechanic?) relay. Also with sophisticated additional circuiting can control a lot of devices with a good precision. Both input and output support. Probably the most useful object in computer for radio ham. Modem. Don't know about this much, it doesn't work because of hsfmodem crashes kernel if memory is = 1GB. May be it's "pick up" and "hang up" can turn on and off power taken from USB port? Video card. VGA port? S-Video port? Will them be useful? Backlight. Tunable, but probably unuseful. CardBus (or some) slot. Nothing interesting for the task probably (is it?). AC adapter and battery. Probably nothing programmable here. /* My AC adapter already have additional jacks to connect extra devics */ Keyboard. No use. Touchpad. Good sensor (synclient -m 1), but no output. Various LEDs inside laptop. Probably too weak and requires soldering. Fans inside laptop. Poor control over them, requires soldering and dangerous to tinker. HDD (internal and external) that can be spin down and up (hdparm -Y, cat /dev/ubb). But connecting anything serially with it's power line makes HDD underpowered... And too complex. Is something are missed? Any ideas how to use described components? Any other ideas? May be there are easily available /* in developing countries */ cheap devices like "enhanced multimeters" that are controllable from computer and can provide configurable output and measure current and other things? Things to aid pushing many physical buttons with computer. Isn't this a simple idea and implementation and a lot of use in good hands?

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• Issues with Verizon's "Network Extender" device talking on my home network.

  - by Logan

  I recently switched my phone service to Verizon from ATT, and I get somewhat spotty service in my house. I called them and they sent me a "network extender" device for free. Its a femtocell that connects to my home network. The directions that come with it are very dumbed down, basically just say to connect it to your router and put it near a window (so it can get a GPS signal, it has to make sure its within the correct area before operating). The problem I'm having is the network light on it stays red. The troubleshooting information that came with it tells me this means there is a bad network connection. Its connected through an ASUS router running DD-WRT. No other devices on my network have a problem with it, including a Western Digital WDLIVE device, mine and my wife's cell phones (via wifi), a Wii, and an Xbox. If I connect the device directly to my cable modem, the light goes blue (which means good) and it starts working. So this tells me that its definately a configuration issue with my router. Verizon basically washed their hands of me when I connected it to my cable modem, and told me that its a router issue and to try a different router. Because normal people just have extra routers laying around their houses... When I connect it to the router, I can watch the DHCP Clients list on the status page, and the MAC of the network extender quickly fills up the clients list, grabbing every available DHCP address. Its like it grabs an address, can't connect to the internet, releases it, grabs another, then another, then another. So in the DHCP server settings I assigned a static IP to its MAC. This made it quit doing what it was doing before, but its still not working. I found the ports I needed to open on verizon's website, and opened them in the port forwarding config on my router. This still didn't help. So, I tried setting the network extender device's IP as the DMZ IP on the router. This still did no good. I called Verizon back and got the tech to write up a report which he passed on to a "senior network tech" who I got a call back from a few hours ago. This guy told me that while an ASUS router isn't listed as a supported device, he's not really sure why its not working. He suggested restoring the firmware to stock ASUS firmware and trying again. I have a very hard time believing its DD-WRT doing this, since every other device is working just fine with it. But its also not the Network Extender, since it works just fine when connected directly to the modem. At this point I'm out of ideas, and the next step is to restore the stock firmware on my router, and then going to walmart and getting a linksys WRT-54G to try. Is there anything else I could try before going that drastic? Cliffs- -Network extender won't work behind router, works when connected directly to cable modem. -Extender goes nuts when allowed to pick its own DHCP address, I had to assign it a static IP. -Won't work when correct ports are forwarded to it -Won't work with a DMZ address.

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• virtual host setup: can't access wordpress site without www

  - by two7s_clash

  I would like to access my site both with and without using the www. Currently it only works with. Leaving out the www just goes to a blank page. Also, wp-admin just loads a blank page too. I have set an A record for mysite.com and www.mysite.com, both pointing to my static Bitnami IP. I also have a subdomain mapped to another directory that is working just fine (conference.mysite.com and www.conference.mysite.com). I'm using a Bitnami stack on an AWS EC2 micro instance. Here is my httpd.conf: ServerRoot "/opt/bitnami/apache2" Listen 80 LoadModule authn_file_module modules/mod_authn_file.so blah blah blah.... LoadModule php5_module modules/libphp5.so <IfModule !mpm_netware_module> <IfModule !mpm_winnt_module> User daemon Group daemon </IfModule> </IfModule> ServerAdmin [email protected] ServerName localhost:80 DocumentRoot "/opt/bitnami/apps/wordpress1/htdocs/" <Directory /> Options FollowSymLinks AllowOverride None Order deny,allow Allow from all </Directory> <Directory "/opt/bitnami/apps/wordpress1/htdocs/"> Options Indexes MultiViews +FollowSymLinks LanguagePriority en AllowOverride All Order allow,deny Allow from all </Directory> <IfModule dir_module> DirectoryIndex index.html index.php </IfModule> <FilesMatch "^\\.ht"> Order allow,deny Deny from all Satisfy All </FilesMatch> ErrorLog "logs/error_log" LogLevel warn <IfModule log_config_module> LogFormat "%h %l %u %t \\"%r\\" %>s %b \\"%{Referer}i\\" \\"%{User-Agent}i\\"" combined LogFormat "%h %l %u %t \\"%r\\" %>s %b" common <IfModule logio_module> LogFormat "%h %l %u %t \\"%r\\" %>s %b \\"%{Referer}i\\" \\"%{User-Agent}i\\" %I %O" combinedio </IfModule> CustomLog "logs/access_log" common </IfModule> <IfModule alias_module> ScriptAlias /cgi-bin/ "/opt/bitnami/apache2/cgi-bin/" </IfModule> <Directory "/opt/bitnami/apache2/cgi-bin"> AllowOverride None Options None Order allow,deny Allow from all </Directory> DefaultType text/plain <IfModule mime_module> TypesConfig conf/mime.types AddType application/x-compress .Z AddType application/x-gzip .gz .tgz </IfModule> Include conf/extra/httpd-mpm.conf <IfModule ssl_module> SSLRandomSeed startup builtin SSLRandomSeed connect builtin </IfModule> AddType application/x-httpd-php .php .phtml LoadModule wsgi_module modules/mod_wsgi.so WSGIPythonHome /opt/bitnami/python ServerSignature Off ServerTokens Prod AddType application/x-httpd-php .php PHPIniDir "/opt/bitnami/php/etc" Include "/opt/bitnami/apps/phpmyadmin/conf/phpmyadmin.conf" ExtendedStatus On <Location /server-status> SetHandler server-status Order Deny,Allow Deny from all Allow from localhost </Location> Include "/opt/bitnami/apache2/conf/bitnami/httpd.conf" Include "/opt/bitnami/apps/virtualhost.conf" Here is my virtual hosts file: NameVirtualHost *:80 <VirtualHost *:80> ServerAdmin xx DocumentRoot "/opt/bitnami/apps/wordpress1/htdocs" ServerName mbird.com ServerAlias www.mbird.com ErrorLog "logs/wordpress-error_log" CustomLog "logs/wordpress-access_log" common </VirtualHost> <Directory "/opt/bitnami/apps/wordpress1/htdocs"> Options Indexes MultiViews +FollowSymLinks AllowOverride All Order allow,deny Allow from all </Directory> ### WordPress conference.mbird.com configuration ### <VirtualHost *:80> ServerAdmin [email protected] DocumentRoot "/opt/bitnami/apps/wordpress/htdocs" ServerName conference.mbird.com ServerAlias www.conference.mbird.com ErrorLog "logs/confwordpress-error_log" CustomLog "logs/confwordpress-access_log" common </VirtualHost> <Directory "/opt/bitnami/apps/wordpress/htdocs"> Options Indexes MultiViews +FollowSymLinks AllowOverride All Order allow,deny Allow from all </Directory> ###

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• Excel "Remove Duplicates" feature does not remove all duplicates

  - by raph82

  When the Data ToolsRemove Duplicates command is used on the following list, some duplicates are not removed: Key 46509 46509 51442 51442 73367 73367 80048 80048 88396 88396 102576 102576 108095 108095 118613 118613 127224 127224 137549 137549 140164 140164 151679 151679 152975 152975 154986 154986 167715 167715 169166 169166 170427 170427 176303 176303 187038 187038 199856 199856 206589 206589 225371 225371 229767 229767 230680 230680 245333 245333 253697 253697 256002 256002 262094 262094 273060 273060 275584 275584 285569 285569 301930 301930 304993 304993 305965 305965 307299 307299 311438 311438 314461 314461 340545 340545 344517 344517 355035 355035 358387 358387 359982 359982 363904 363904 368642 368642 378666 378666 378744 378744 382396 382396 393542 393542 394320 394320 395258 395258 402047 402047 421796 421796 427972 427972 442651 442651 442654 442654 445786 445786 447124 447124 456682 456682 467303 467303 470437 470437 476340 476340 480976 480976 481450 481450 498967 498967 516068 516068 517592 517592 522621 522621 524678 524678 529405 529405 532909 532909 535096 535096 540835 540835 553197 553197 566893 566893 567730 567730 570751 570751 572259 572259 581701 581701 589753 589753 597923 597923 602282 602282 612011 612011 643774 643774 649471 649471 654159 654159 661681 661681 680578 680578 709714 709714 728036 728036 728680 728680 740252 740252 750843 750843 763430 763430 777724 777724 777870 777870 779703 779703 787034 787034 789776 789776 793859 793859 798479 798479 812410 812410 816599 816599 820169 820169 821236 821236 833511 833511 833701 833701 845925 845925 854408 854408 882853 882853 891710 891710 906251 906251 929802 929802 982039 982039 984503 984503 984539 984539 987889 987889 997188 997188 1002869 1002869 1018493 1018493 1020735 1020735 1028780 1028780 1032460 1032460 1047306 1047306 1052136 1052136 1054482 1054482 1062633 1062633 1066509 1066509 1069500 1069500 1075339 1075339 1082282 1082282 1100206 1100206 1105407 1105407 1111409 1111409 1112175 1112175 1112407 1112407 1113400 1113400 1117243 1117243 1121732 1121732 1152461 1152461 1153727 1153727 1157252 1157252 1163384 1163384 1195324 1195324 1197373 1197373 1201828 1201828 1202786 1202786 1216328 1216328 1223541 1223541 1225848 1225848 1228595 1228595 1239281 1239281 1264378 1264378 1267348 1267348 1291510 1291510 1309891 1309891 1321106 1321106 1322886 1322886 1327690 1327690 1344145 1344145 1346250 1346250 1352350 1352350 1357920 1357920 1363386 1363386 1365046 1365046 1370383 1370383 1376666 1376666 1383834 1383834 1414472 1414472 1418967 1418967 1419811 1419811 1421587 1421587 1432639 1432639 1442854 1442854 1455236 1455236 1461896 1461896 1466376 1466376 1477670 1477670 1480154 1480154 1481801 1481801 1498209 1498209 1504776 1504776 1511904 1511904 1017854_447 1017854_447 1085496_19 1085496_19 1280601_77 1280601_77 1350662_135 1350662_135 141944_382 141944_382 1525893_483 1525893_483 455968_177 455968_177 469495_157 469495_157 641583_74 641583_74 704267_63 704267_63 709992_199 709992_199 819399_224 819399_224 832188_358 832188_358 857189_467 857189_467 898328_334 898328_334 91033_245 91033_245 960992_341 960992_341 999706_361 999706_361 BLA1048669 BLA1048669 BLA1052457 BLA1052457 BLA1055176 BLA1055176 BLA1060585 BLA1060585 BLA1067125 BLA1067125 BLA107601 BLA107601 BLA1087509 BLA1087509 BLA1097390 BLA1097390 BLA1122471 BLA1122471 BLA1126436 BLA1126436 BLA112694 BLA112694 BLA1148652 BLA1148652 BLA1149504 BLA1149504 BLA1155256 BLA1155256 BLA1222348 BLA1222348 BLA1225575 BLA1225575 BLA1227779 BLA1227779 BLA124071 BLA124071 BLA1247411 BLA1247411 BLA1258830 BLA1258830 BLA1281625 BLA1281625 BLA128165 BLA128165 BLA1305848 BLA1305848 BLA1307751 BLA1307751 BLA130926 BLA130926 BLA1334270 BLA1334270 BLA1335674 BLA1335674 BLA1340102 BLA1340102 BLA1345080 BLA1345080 BLA1353398 BLA1353398 BLA1369834 BLA1369834 BLA1424977 BLA1424977 BLA142669 BLA142669 BLA1429760 BLA1429760 BLA1443592 BLA1443592 BLA1447085 BLA1447085 BLA1453639 BLA1453639 BLA1456355 BLA1456355 BLA1458745 BLA1458745 BLA148663 BLA148663 BLA1494220 BLA1494220 BLA1522880 BLA1522880 BLA152562 BLA152562 BLA1548628 BLA1548628 BLA182644 BLA182644 BLA186707 BLA186707 BLA188073 BLA188073 BLA199127 BLA199127 BLA207148 BLA207148 BLA209939 BLA209939 BLA232119 BLA232119 BLA240725 BLA240725 BLA267275 BLA267275 BLA303829 BLA303829 BLA346044 BLA346044 BLA348268 BLA348268 BLA367863 BLA367863 BLA386897 BLA386897 BLA390799 BLA390799 BLA415724 BLA415724 BLA425291 BLA425291 BLA427093 BLA427093 BLA462355 BLA462355 BLA46821 BLA46821 BLA477637 BLA477637 BLA501111 BLA501111 BLA522126 BLA522126 BLA530906 BLA530906 BLA576525 BLA576525 BLA639361 BLA639361 BLA644530 BLA644530 BLA65754 BLA65754 BLA670003 BLA670003 BLA687525 BLA687525 BLA709367 BLA709367 BLA714281 BLA714281 BLA719328 BLA719328 BLA736457 BLA736457 BLA759669 BLA759669 BLA76056 BLA76056 BLA767666 BLA767666 BLA780853 BLA780853 BLA793029 BLA793029 BLA796639 BLA796639 BLA803743 BLA803743 BLA815298 BLA815298 BLA828243 BLA828243 BLA864030 BLA864030 BLA864110 BLA864110 BLA882892 BLA882892 BLA885665 BLA885665 BLA897478 BLA897478 BLA903861 BLA903861 BLA91627 BLA91627 BLA925523 BLA925523 BLA928243 BLA928243 BLA932395 BLA932395 BLA935341 BLA935341 BLA940705 BLA940705 BLA966386 BLA966386 A message is displayed indicating 293 duplicate values were removed and 307 unique values remain. 7 duplicates are not removed: 1280601_77 1525893_483 455968_177 469495_157 641583_74 704267_63 709992_199 The initial list consist of Excel-ordered values of: numbers between 40,000 and 1,500,000 numbers in the same range with and added _ and a 1-999 suffix numbers in the same range prefixed with BLA Each value is present exactly twice. There are no formula involved. I already checked for extra spaces. Immediately reapplying the Remove Duplicates command does not remove the remaining duplicate values. Reapplying the Remove Duplicates command after a reverse-sort seems to remove the remaining duplicates. Reverse-sorting before using the first Remove Duplicates changes the result (213 duplicate values removed and 387 unique values remained), only in the non-suffixed non-prefixed group. Can you reproduce this bug in Excel 2007 like I do? What triggers it? Could it the composite (numbers and text) data set? I'm not looking for alternatives. I want to know when not to use the feature and revert to already known (Excel 2003 era) alternatives.

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• conflict in debian packages

  - by Alaa Alomari

  I have Debian 4 server (i know it is very old) cat /etc/issue Debian GNU/Linux 4.0 \n \l I have the following in /etc/apt/sources.list deb http://debian.uchicago.edu/debian/ stable main deb http://ftp.debian.org/debian/ stable main deb-src http://ftp.debian.org/debian/ stable main deb http://security.debian.org/ stable/updates main apt-get upgrade Reading package lists... Done Building dependency tree... Done You might want to run 'apt-get -f install' to correct these. The following packages have unmet dependencies. libt1-5: Depends: libc6 (= 2.7) but 2.3.6.ds1-13etch10+b1 is installed locales: Depends: glibc-2.11-1 but it is not installable E: Unmet dependencies. Try using -f. Now it shows that i have Debian 6!! cat /etc/issue Debian GNU/Linux 6.0 \n \l EDIT I have tried apt-get update Get: 1 http://debian.uchicago.edu stable Release.gpg [1672B] Hit http://debian.uchicago.edu stable Release Ign http://debian.uchicago.edu stable/main Packages/DiffIndex Hit http://debian.uchicago.edu stable/main Packages Get: 2 http://security.debian.org stable/updates Release.gpg [836B] Hit http://security.debian.org stable/updates Release Get: 3 http://ftp.debian.org stable Release.gpg [1672B] Ign http://security.debian.org stable/updates/main Packages/DiffIndex Hit http://security.debian.org stable/updates/main Packages Hit http://ftp.debian.org stable Release Ign http://ftp.debian.org stable/main Packages/DiffIndex Ign http://ftp.debian.org stable/main Sources/DiffIndex Hit http://ftp.debian.org stable/main Packages Hit http://ftp.debian.org stable/main Sources Fetched 3B in 0s (3B/s) Reading package lists... Done apt-get dist-upgrade Reading package lists... Done Building dependency tree... Done You might want to run 'apt-get -f install' to correct these. The following packages have unmet dependencies. libt1-5: Depends: libc6 (= 2.7) but 2.3.6.ds1-13etch10+b1 is installed locales: Depends: glibc-2.11-1 E: Unmet dependencies. Try using -f. apt-get -f install Reading package lists... Done Building dependency tree... Done Correcting dependencies...Done The following extra packages will be installed: gcc-4.4-base libbsd-dev libbsd0 libc-bin libc-dev-bin libc6 Suggested packages: glibc-doc Recommended packages: libc6-i686 The following packages will be REMOVED libc6-dev libedit-dev libexpat1-dev libgcrypt11-dev libjpeg62-dev libmcal0-dev libmhash-dev libncurses5-dev libpam0g-dev libsablot0-dev libtool libttf-dev The following NEW packages will be installed gcc-4.4-base libbsd-dev libbsd0 libc-bin libc-dev-bin The following packages will be upgraded: libc6 1 upgraded, 5 newly installed, 12 to remove and 349 not upgraded. 7 not fully installed or removed. Need to get 0B/5050kB of archives. After unpacking 23.1MB disk space will be freed. Do you want to continue [Y/n]? y Preconfiguring packages ... dpkg: regarding .../libc-bin_2.11.3-2_i386.deb containing libc-bin: package uses Breaks; not supported in this dpkg dpkg: error processing /var/cache/apt/archives/libc-bin_2.11.3-2_i386.deb (--unpack): unsupported dependency problem - not installing libc-bin Errors were encountered while processing: /var/cache/apt/archives/libc-bin_2.11.3-2_i386.deb E: Sub-process /usr/bin/dpkg returned an error code (1) Now: it seems there is a conflict!! how can i fix it? and is it true that the server has became debian 6!!?? Thanks for your help

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• In what (small) ways can I modify Octave's compile options to enhance it without breaking it?

  - by irrational John

  If the title to this question seems a bit vague, I am sorry. But I wasn't sure how to distill what I am attempting to do into a single sentence. A few weeks back I learned that I could build and install recent releases of Octave on an Ubuntu 12.04 system by following the steps below. Install the tools needed to compile, link, and run octave. For Ubuntu the commands below have worked for me. sudo apt-get build-dep octave3.2 sudo apt-get install build-essential gnuplot gtk2-engines-pixbuf sudo apt-get install libfontconfig-dev bison Next, download the source code for an Octave release from the Gnu Project Archives for Octave and unpack the archive into a folder on your system. Use the commands below to build, check, and install octave. ./configure make make check sudo make install Unfortunately it turns out that the above builds an Octave that contains all the debugging symbol tables. The object files alone are huge taking up around 1.7 GB. The current Octave documentation suggests To compile without debugging symbols try the command make CFLAGS=-O CXXFLAGS=-O LDFLAGS= instead of just make. However, when I tried this it did not work. The -g option was still used for the compiles. For the heck of it I instead tried ./configure CFLAGS=-O CXXFLAGS=-O and this did work. (Instead of ~1.7GB the result of the build now takes up around 253MB). My questions are Is this actually the correct (recommended?) method to use to compile Octave without debugging symbols (i.e. without -g)? How would I compile Octave so it uses x86_64 rather than x86? Note: I am not asking how to compile Octave to use the (experimental) 64-bit integers for array dimensions. I just want to allow the compiler to use the extra registers and word sizes available when an app runs in 64-bit mode. Is a (more) complete list available for the directives used with the Octave Makefile? I have only seen make, make check, and make install documented. But apparently make distclean is also allowed. (It removes the compilation results so you can do a complete rebuild of everything.) I'm wondering what else might be available. FWIW, I have tried using ./configure CFLAGS="-O3 -mtune=core2 -m64" CXXFLAGS="-O3 -mtune=core2 -m64" and, surprisingly, it not only appeared to build, but also ran and passed the make check tests. The ./configure script even gave me the (deceptively?) reassuring message "Octave is now configured for x86_64-unknown-linux-gnu". But of course that's not the same thing as saying it actually "works". Is there a recommended way to enable Octave to run as an x86_64 app? I have also tried looking inside the Octave Makefile to see if I could decipher what command line directives it accepts. I got nowhere. I have not a single clue as to how that Makefile does whatever it is that it does.

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• Server Cabinet/Room Cooling

  - by user37226

  Hello all. I currently have two desktops and three servers in my office sitting on the floor (I know this is bad). With that many servers the ambient temperature in the room goes up quickly. I am located in Dallas, TX so during the winter, if the heat is kept low, it is not a problem, but during the summer it easily jumps the room +10 degrees. I have decided and found a free 42U server cabinet that a hosting company was throwing away to house all of these systems in. One server is in a rack mount case while the other four servers are housed in mid-tower cases. I have purchased shelves for each computer and plan to lay the towers side ways on these shelves (as replacing the cases costs a heck of a lot of money). I like the idea of housing all of these systems in the cabinet because it will save a lot of room and clean up all of the cabling currently laying all over the office floor. When putting this setup together over the next couple of weeks, I want to address issues with dust and cooling. The server cabinet has a fan on top, front plexiglass door and a rear metal door with vent wholes on the bottom. First the cooling issues. I know I am going to want to have cool air enter the bottom of the cabinet and exit the top. I do not want the room heating up though as this will make my work area hot and then make the servers warmer as the air eventually reenters the cabinet. I had an idea to fix this problem, but am unsure if it will work. I was thinking of taking flexible piping and adapting it to the back fans of the computer having the other end of the pipe at the top close to the cabinet's top mounted fan. I was then thinking of creating a duct around the top fan into the attic. Now I am very concerned that the attic will cause issues with this type of setup because during July/August time frame, the attic is easily 120 degrees F. I could also use the flexible pipe to take it to an attic exhaust vent if it would be better to vent it into the 100 degree air outside (at least there may be wind. The other option would be to buy a small portable air conditioner. This may be a possibility, but do I want to spend the extra money on power? I bet this increases the noise. Plus they are around $250 on Amazon. What would you all recommend? Depending on the solution I end up running with above, I would also like to limit the dust that gets into the cabinet. If I were to cut a whole and mount a second cabinet fan on the bottom of the rear door, could I possibly mount a standard home air filter on the other side of that whole? Thanks in advance for your recommendations. I look forward to reading your interesting ideas.

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• Server Cabinet/Room Cooling

  - by user37226

  Hello all. I currently have two desktops and three servers in my office sitting on the floor (I know this is bad). With that many servers the ambient temperature in the room goes up quickly. I am located in Dallas, TX so during the winter, if the heat is kept low, it is not a problem, but during the summer it easily jumps the room +10 degrees. I have decided and found a free 42U server cabinet that a hosting company was throwing away to house all of these systems in. One server is in a rack mount case while the other four servers are housed in mid-tower cases. I have purchased shelves for each computer and plan to lay the towers side ways on these shelves (as replacing the cases costs a heck of a lot of money). I like the idea of housing all of these systems in the cabinet because it will save a lot of room and clean up all of the cabling currently laying all over the office floor. When putting this setup together over the next couple of weeks, I want to address issues with dust and cooling. The server cabinet has a fan on top, front plexiglass door and a rear metal door with vent wholes on the bottom. First the cooling issues. I know I am going to want to have cool air enter the bottom of the cabinet and exit the top. I do not want the room heating up though as this will make my work area hot and then make the servers warmer as the air eventually reenters the cabinet. I had an idea to fix this problem, but am unsure if it will work. I was thinking of taking flexible piping and adapting it to the back fans of the computer having the other end of the pipe at the top close to the cabinet's top mounted fan. I was then thinking of creating a duct around the top fan into the attic. Now I am very concerned that the attic will cause issues with this type of setup because during July/August time frame, the attic is easily 120 degrees F. I could also use the flexible pipe to take it to an attic exhaust vent if it would be better to vent it into the 100 degree air outside (at least there may be wind. The other option would be to buy a small portable air conditioner. This may be a possibility, but do I want to spend the extra money on power? I bet this increases the noise. Plus they are around $250 on Amazon. What would you all recommend? Depending on the solution I end up running with above, I would also like to limit the dust that gets into the cabinet. If I were to cut a whole and mount a second cabinet fan on the bottom of the rear door, could I possibly mount a standard home air filter on the other side of that whole? Thanks in advance for your recommendations. I look forward to reading your interesting ideas.

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• Causes of sudden massive filesystem damage? ("root inode is not a directory")

  - by poolie

  I have a laptop running Maverick (very happily until yesterday), with a Patriot Torx SSD; LUKS encryption of the whole partition; one lvm physical volume on top of that; then home and root in ext4 logical volumes on top of that. When I tried to boot it yesterday, it complained that it couldn't mount the root filesystem. Running fsck, basically every inode seems to be wrong. Both home and root filesystems show similar problems. Checking a backup superblock doesn't help. e2fsck 1.41.12 (17-May-2010) lithe_root was not cleanly unmounted, check forced. Resize inode not valid. Recreate? no Pass 1: Checking inodes, blocks, and sizes Root inode is not a directory. Clear? no Root inode has dtime set (probably due to old mke2fs). Fix? no Inode 2 is in use, but has dtime set. Fix? no Inode 2 has a extra size (4730) which is invalid Fix? no Inode 2 has compression flag set on filesystem without compression support. Clear? no Inode 2 has INDEX_FL flag set but is not a directory. Clear HTree index? no HTREE directory inode 2 has an invalid root node. Clear HTree index? no Inode 2, i_size is 9581392125871137995, should be 0. Fix? no Inode 2, i_blocks is 40456527802719, should be 0. Fix? no Reserved inode 3 (<The ACL index inode>) has invalid mode. Clear? no Inode 3 has compression flag set on filesystem without compression support. Clear? no Inode 3 has INDEX_FL flag set but is not a directory. Clear HTree index? no .... Running strings across the filesystems, I can see there are what look like filenames and user data there. I do have sufficiently good backups (touch wood) that it's not worth grovelling around to pull back individual files, though I might save an image of the unencrypted disk before I rebuild, just in case. smartctl doesn't show any errors, neither does the kernel log. Running a write-mode badblocks across the swap lv doesn't find problems either. So the disk may be failing, but not in an obvious way. At this point I'm basically, as they say, fscked? Back to reinstalling, perhaps running badblocks over the disk, then restoring from backup? There doesn't even seem to be enough data to file a meaningful bug... I don't recall that this machine crashed last time I used it. At this point I suspect a bug or memory corruption caused it to write garbage across the disks when it was last running, or some kind of subtle failure mode for the SSD. What do you think would have caused this? Is there anything else you'd try?

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• Putting indexes in separate filegroup kills our queries

  - by womp

  Can anyone shed some light on this? On our dev boxes, our database resides entirely in the PRIMARY filegroup, and everything works fine. On one of our production servers, recently upgraded from 2005 to 2008, we noticed it was performing slower than it should. On this machine, there are two filegroups - PRIMARY and INDEXES. Both filegroups contain 1 file per logical volume, one logical volume per CPU, (and each logical volume is a RAID 10 of 4 physical disks). We isolated a few queries that were performing fast on the dev boxes and slow (up to 40x slower) on the production machine. Turned out these queries were using the non-clustered indexes that resided in the INDEXES filegroup. Tweaking some of the queries to only use clustered indexes that were in the PRIMARY filegroup dropped their times back to normal. As a final confirmation, we redeployed the same database on the same machine to have everything in PRIMARY, and things went back to normal! Here's the statistics output of one of the queries, run identically on the machine with different filegroup configurations (table names changed to protect the innocent): FAST (everything in PRIMARY filegroup): (3 row(s) affected) Table '0'. Scan count 2, logical reads 14, ... Table '1'. Scan count 0, logical reads 0, ... Table '1'. Scan count 0, logical reads 0, ... Table '2'. Scan count 2, logical reads 7, ... Table '3'. Scan count 2, logical reads 1012, ... Table '4'. Scan count 1, logical reads 3, ... SQL Server Execution Times: CPU time = 437 ms, elapsed time = 445 ms. SLOW (indexes split into their own filegroup): (3 row(s) affected) Table '0'. Scan count 209, logical reads 428, ... Table '1'. Scan count 0, logical reads 0,... Table '2'. Scan count 1021, logical reads 9043,.... Table '3'. Scan count 209, logical reads 105754, .... Table '4'. Scan count 0, logical reads 0, .... Table '5'. Scan count 1, logical reads 695, ... **Table '#46DA8CA9'. Scan count 205, logical reads 205, ...** Table '6'. Scan count 6, logical reads 436, ... Table '7'. Scan count 1, logical reads 12,.... SQL Server Execution Times: CPU time = 17581 ms, elapsed time = 17595 ms. Notice the weird temp table and extra tables involved in the slow query. It seems clear that having a second file group is making SQL Server batty with choosing an execution plan. What the heck is going on?

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• e2fsck / resize2fs problems

  - by BlakBat

  I've got 6 drives (each 1.5T, all same model and firmware revision) that are part of a RAID5 array. The RAID5 makes a LVM volume group and a logical group. The latter contains only one ext3 partition. I've recently ran: e2fsck -f /dev/vg03/lv01 && resize2fs -M /dev/vg03/lv01 which exited without an error. Now when I try to mount /dev/vg03/lv01 I get: EXT3-fs error (device dm-0): ext3_check_descriptors: Block bitmap for group 30533 not in group (block 1000532368)! EXT3-fs: group descriptors corrupted! How do I get out of this predicament? This is all the info I can currently give you: fdisk -l /dev/sd[cdefgh] shows (correctly) that they are "Linux raid autodetect" but fdisk now shows: fdisk -l /dev/md0 Disk /dev/md0: 7501.5 GB, 7501495664640 bytes ... Disk identifier: 0x00000000 Disk /dev/md0 doesn't contain a valid partition table (instead of a LVM type partition) fdisk -l /dev/vg03/lv01 Disk /dev/vg03/lv01: 7501.5 GB, 7501491732480 bytes ... Disk identifier: 0x00000000 Disk /dev/vg03/lv01 doesn't contain a valid partition table (instead of a ext3 type partition) I've tried: e2fsck -fy /dev/vg03/lv01 e2fsck 1.41.12 (17-May-2010) e2fsck: Group descriptors look bad... trying backup blocks... Block bitmap for group 30533 is not in group. (block 1000532368) Relocate? yes Inode bitmap for group 30533 is not in group. (block 1000532369) Relocate? yes Pass 1: Checking inodes, blocks, and sizes Relocating group 30533's block bitmap to 1000524246... Error allocating 1 contiguous block(s) in block group 30533 for inode bitmap: Could not allocate block in ext2 filesystem e2fsck: aborted Extra information I can give you: cat /proc/mdstat Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md0 : active (auto-read-only) raid5 sdg1[0] sdh1[5] sdf1[4] sde1[3] sdc1[2] sdd1[1] 7325679360 blocks level 5, 128k chunk, algorithm 2 [6/6] [UUUUUU] bitmap: 1/175 pages [4KB], 4096KB chunk unused devices: Lastly, all smartctl tests (short and extendend) showed no errors on any of the disks. Should I try to resize2fs to grow /dev/vg03/lv01 and redo a e2fsck ? Should I cfdisk /dev/md0 and /dev/vg03/lv01 back to their real types? Thanks in advance for all and any help. 2011-09-20 UPDATE I issued the following commands and was able to remount the partition, but by viewing the size (df) of before and after, it seems that 1Tb of data have gone missing. By checking the MD5SUMS (from an old backup) of some files with the "same" files from the remounted partition, some errors have been detected. Commands issued to remount the partition were: dumpe2fs /dev/vg03/lv01 Block count: 1000491435<br /> Block size: 4096<br /> tune2fs -O ^has_journal /dev/vg03/lv01 resize2fs -p /dev/vg03/lv01 dumpe2fs /dev/vg03/lv01 Block count: 1831418880<br /> Block size: 4096<br /> mount -o ro,noatime /dev/vg03/lv01 /mnt/raid OK... but files have been damaged / gone missing.

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• Determining the required depth and specifications for a server cabinet

  - by Bingu Bingme

  I'm trying to understand the considerations ("why") that go into determining the specifications ("what") for a rackmount server cabinet, in order to determine what sort of rack I should purchase for my home use. Since this is for home use, I won't be following certain best practices (eg. hot/cold aisle, not even air conditioning) and may be willing to sacrifice in various areas in order to reduce cost and footprint - but please advise if there are safety concerns or other considerations to note. The most basic specs for a server cabinet are the dimensions (external width x external depth x usable height). Width: commonly 600mm or 800mm (if the use case requires extra clearance around the sides, such as if there is lots of cabling). In my case and most common cases, I'm going to stick with 600mm. Height: Select a sufficiently tall rack to fit my equipment. But how much may I stuff into it? Eg, if there is a 15U rack, can I really populate it with 15U of servers, or should I leave 1U at top and bottom for air circulation? Depth: Racks commonly have external depth of 600mm (network equipment), 800mm, 1000mm, or even longer. I'm trying to see how to fit into the 800mm depth. With reference to http://www.server-racks.com/rack-mount-depth.html, I'm hoping to have the front and rear posts mounted ~ 28.5" (72cm) apart, which would leave only 8cm for front space and rear space. How much rear space (from rear posts to back of rack) do I really need? I won't use cable management arms, so can I mount a 72cm depth server since the power, KVM, network cables won't take up much depth? My most important equipment are all < 60cm depth (4U chassis) and should comfortably fit within the 800mm cabinet. The rest of the equipment are very old 1U servers that range from 65-72cm depth. I might still want to make further use of them, or I might discard them since they are so old. Even if the 72cm servers cannot be powered on in an 800mm rack, I should be able to use them as 1U shelves. But, what server depth can I expect to be able to operate? Or am I forced to upgrade to 1000mm depth racks in order to use any servers deeper than 60cm? With reference to best practices for HP racks, some other specs and installation considerations: There aren't any minimum recommendations for clearance on the sides of the rack. It is recommended to leave 48" front clearance. The 48" front clearance is based on 32" chassis depth, 13" to extend the rack rails and mate the inner/outer rails, and 3" for movement. If I don't use such rails (eg, use shelves instead), it should be sufficient to leave front clearance of chassis depth + 3". It is recommended to leave 30" rear clearance "to provide space for servicing the rack". I'm planning to back the rack into a corner of the room, and wheel it slightly out when I need to access the rear. If the wheeling plan is ok, I still need to know how much rear clearance is required for air circulation and ventilation purposes. Castor wheels and stabilising feet. Since I'm backing the rack into a corner of the room, I'll only be able to set the stabilising feet on the front corners. Thoughts on safety? The rack that I'm considering has front glass doors with side ventilation slits and fully perforated rear doors. I'm hoping this will be a good balance between temperature and noise (only ventilation slits facing out the front, while the rear is facing the walls). Or is the sound of high-rpm fans going to escape through the front slits anyway and destroy my sanity?

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• Windows 7, HTTPS WebDav: Asks for password twice and fails. Any workarounds?

  - by AutoDMC

  Howdy. I have a Dav server running with PHP SabreDav (code.google.com/p/sabredav/wiki/Windows) on Cherokee at an HTTPS secured URL. It's set to use https, and uses Digest Authentication. I can log in with multiple browsers and a few third party clients (BitKinex and Java AnyClient can connect and browse as well, caveats below). However, when attempting to log in with Windows 7 (surprise, surprise), it asks for my password twice, then tells me that my folder is invalid. I have verified that the server is using Digest authentication. I've verified multiple times that third party software can connect. I even went out and bought a GoDaddy SSL certificate so my SSL wouldn't be self signed anymore. I've applied the registry hacks here: support.microsoft.com/kb/943280 (Note that the article says the "fix" already exists for Windows 7, I just need magical registry hax to get it to work) I've applied the registry hacks here: support.microsoft.com/kb/941050 I've applied the registry hacks here: support.microsoft.com/kb/841215 (Supposedly allows Basic Auth, which shouldn't apply, but why not?) All to no avail; Windows continues to ask for my password twice, then state that "The folder you entered does not appear to be valid. Please choose another." Try the command line? Sure: I've attempted to access with NET USE "https://dav.example.com/" password /USER:me (System error 59) I've attempted to access with NET USE "https://dav.example.com/" (System error 1790) I've attempted to access with NET USE "https://dav.example.com/subdir/" password /USER:me (System error 59) I've attempted to access with NET USE "https://dav.example.com/subdir/" (System error 1790) For good luck: ping dav.example.com ... works. And again, web browsers can access the share just fine, so can third party tools. Best I can tell at this point is "HAHA, NO WEBDAV FOR YOU ON WINDOWS 7" which would be fine except everyone who will be using this application... uses Windows 7. And most are not as persistent or pugnacious as I am. I feel like I've burned through every random suggestion I've found anywhere in the first 10 pages of Google on every search term I can think of. Any ideas? I need it to be Webdav, I need it to be over HTTPS, and I really do need a method to access it from Windows 7. EXTRA DETAIL: However, the "third party" programs I've tried have either been buggy, incomplete, or have silly ... "glitches." For example, BitKinex seems to fixate on any http error codes sent, so if there's a glitch reading a directory, BAM, that directory is always listed empty. Long directory listings also show up as blank, even though the transfer panel shows that directory listing is still taking place. In any case, BitKinex is useless for development purposes for the reasons above. And besides, I'm building this for people other than myself, people who will want to get this dav share working "the regular way."

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• Setup access to SAS RAID drives with NTFS partitions on CentOS Machine

  - by Quanano

  We have a Dell Poweredge 2900 system with Adaptec 39320A SCSI CONTROLLER CARD and 4 SAS hard drives attached, with NTFS partitions on them. We installed CentOS on the other raid array with a different controller and it is working fine. We are now trying to access the drives shown above and they are not being shown in /dev as sdb, etc. sda is the drive that we installed centos on and it has sda1, sda2, sda3, etc. The CDROM has been picked up as well. If I scan for scsi devices then the perc and adaptec controllers are both found. sg0 is the CDROM and sg2 is the centos installed, however I think sg1 is the other drive but I cannot see anyway to mount the partitions, as only the drive is listed in /dev. Thanks. EXTRA INFO fdisk -l Disk /dev/sda: 72.7 GB, 72746008576 bytes 255 heads, 63 sectors/track, 8844 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: 0x11e3119f Device Boot Start End Blocks Id System /dev/sda1 * 1 64 512000 83 Linux Partition 1 does not end on cylinder boundary. /dev/sda2 64 8845 70528000 8e Linux LVM Disk /dev/mapper/vg_lal2server-lv_root: 34.4 GB, 34431041536 bytes 255 heads, 63 sectors/track, 4186 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: 0x00000000 Disk /dev/mapper/vg_lal2server-lv_root doesn't contain a valid partition table Disk /dev/mapper/vg_lal2server-lv_swap: 21.1 GB, 21139292160 bytes 255 heads, 63 sectors/track, 2570 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: 0x00000000 Disk /dev/mapper/vg_lal2server-lv_swap doesn't contain a valid partition table Disk /dev/mapper/vg_lal2server-lv_home: 16.6 GB, 16647192576 bytes 255 heads, 63 sectors/track, 2023 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: 0x00000000 Disk /dev/mapper/vg_lal2server-lv_home doesn't contain a valid partition table These are all from the install hdd not the additional hard drives modprobe a320raid FATAL: Module a320raid not found. lsscsi -v [0:0:0:0] cd/dvd TSSTcorp CDRWDVD TS-H492C DE02 /dev/sr0 dir: /sys/bus/scsi/devices/0:0:0:0 [/sys/devices/pci0000:00/0000:00:1f.1/host0/target0:0:0/0:0:0:0] [4:0:10:0] enclosu DP BACKPLANE 1.05 - dir: /sys/bus/scsi/devices/4:0:10:0 [/sys/devices/pci0000:00/0000:00:05.0/0000:01:00.0/0000:02:0e.0/host4/target4:0:10/4:0:10:0] [4:2:0:0] disk DELL PERC 5/i 1.03 /dev/sda dir: /sys/bus/scsi/devices/4:2:0:0 [/sys/devices/pci0000:00/0000:00:05.0/0000:01:00.0/0000:02:0e.0/host4/target4:2:0/4:2:0:0] . lsmod Module Size Used by fuse 66285 0 des_generic 16604 0 ecb 2209 0 md4 3461 0 nls_utf8 1455 0 cifs 278370 0 autofs4 26888 4 ipt_REJECT 2383 0 ip6t_REJECT 4628 2 nf_conntrack_ipv6 8748 2 nf_defrag_ipv6 12182 1 nf_conntrack_ipv6 xt_state 1492 2 nf_conntrack 79453 2 nf_conntrack_ipv6,xt_state ip6table_filter 2889 1 ip6_tables 19458 1 ip6table_filter ipv6 322029 31 ip6t_REJECT,nf_conntrack_ipv6,nf_defrag_ipv6 bnx2 79618 0 ses 6859 0 enclosure 8395 1 ses dcdbas 9219 0 serio_raw 4818 0 sg 30124 0 iTCO_wdt 13662 0 iTCO_vendor_support 3088 1 iTCO_wdt i5000_edac 8867 0 edac_core 46773 3 i5000_edac i5k_amb 5105 0 shpchp 33482 0 ext4 364410 3 mbcache 8144 1 ext4 jbd2 88738 1 ext4 sd_mod 39488 3 crc_t10dif 1541 1 sd_mod sr_mod 16228 0 cdrom 39771 1 sr_mod megaraid_sas 77090 2 aic79xx 129492 0 scsi_transport_spi 26151 1 aic79xx pata_acpi 3701 0 ata_generic 3837 0 ata_piix 22846 0 radeon 1023359 1 ttm 70328 1 radeon drm_kms_helper 33236 1 radeon drm 230675 3 radeon,ttm,drm_kms_helper i2c_algo_bit 5762 1 radeon i2c_core 31276 4 radeon,drm_kms_helper,drm,i2c_algo_bit dm_mirror 14101 0 dm_region_hash 12170 1 dm_mirror dm_log 10122 2 dm_mirror,dm_region_hash dm_mod 81500 11 dm_mirror,dm_log

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