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• Unable to implement JMS using ApacheMQ

  - by Galaxin

  Iam trying to implement a simple JMS code in eclipse using ApacheMQ. I have downloaded the ApacheMQ from apache.org and sample JMS sender from SimpleQueueSender and receiver from SimpleQueueReceiver respectively. Now how should i execute this code? I have already gone through all related tutorials but couldnot find answers to these questions. Please suggest solutions on What all are the changes to be done regarding classpaths,settings after the activemq is started as below INFO | jetty-7.1.6.v20100715 INFO | ActiveMQ WebConsole initialized. INFO | Initializing Spring FrameworkServlet 'dispatcher' INFO | ActiveMQ Console at http://0.0.0.0:8161/admin INFO | ActiveMQ Web Demos at http://0.0.0.0:8161/demo INFO | RESTful file access application at http://0.0.0.0:8161/fileserver INFO | Started [email protected]:8161 how to proceed next? 2.Should this server be added in the eclipse as a new server and then the program is run on that server? 3.Can these programs be run from eclipse or should they executed from a separate console?

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• Controlling Windows Media Player through PHP / batch files

  - by Duroth

  I'm currently writing a tiny webapp for my HTPC (actually, a PC serving as both a media player and web- / fileserver) that will allow me to remotely control the playing of audio, without having to turn on my TV just to switch songs. I'm using Windows Media Player as my audio player of choice, and I thought I could control it through PHP's COM Class. Unfortunately, I've not been able to find any documentation or examples on controlling WMP through this interface. Can anyone point me in the right direction here? A second (and much less preferable) solution would be to use PHP's exec() call to start batch files that, in turn, control WMP.

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• RAID1: can't replace faulty spare (marked again as 'faulty spare' within seconds)

  - by user212475

  I got a problem that I cannot solve: Our fileserver runs XUbuntu and 3 RAID1s. One has a problem since monday: it consists of sdb and sdc. sdb was marked as faulty by mdadm for unknown reasons. I used --remove to remove it from the RAID and then to add it by --add. All was fine, re-syncing started but never got above 0% and after a few seconds, sdb was again marked as 'faulty spare' (and therefore the RAID degraded, but clean). So I saved the first 512 byte of the old sdb to a file, bought a new HDD of same size (4TB), shut down the computer and replaced sdb physically, switched the computer back on and wrote the 512 byte back to the new drive to have the same partition info as the old drive (both are the same type, from same company). But the new drive shows the same behaviour as the old: I can add, re-syncing starts and after a few seconds its marked as 'faulty spare'. Here exactly what i did: mdadm --remove /dev/md/1 /dev/sdb maadm --detail /dev/md/1 gives me: /dev/md/1: Version : 1.2 Creation Time : Sat Jun 8 22:32:05 2013 Raid Level : raid1 Array Size : 3906887360 (3725.90 GiB 4000.65 GB) Used Dev Size : 3906887360 (3725.90 GiB 4000.65 GB) Raid Devices : 2 Total Devices : 1 Persistence : Superblock is persistent Update Time : Thu Nov 7 06:56:13 2013 State : clean, degraded Active Devices : 1 Working Devices : 1 Failed Devices : 0 Spare Devices : 0 Name : File-Server:1 (local to host File-Server) UUID : 44ed561f:b733e946:e69820f4:aba9b223 Events : 2424 Number Major Minor RaidDevice State 0 0 0 0 removed 1 8 32 1 active sync /dev/sdc mdadm --add /dev/md/1 /dev/sdb mdadm --detail /dev/md/1 gives me: Version : 1.2 Creation Time : Sat Jun 8 22:32:05 2013 Raid Level : raid1 Array Size : 3906887360 (3725.90 GiB 4000.65 GB) Used Dev Size : 3906887360 (3725.90 GiB 4000.65 GB) Raid Devices : 2 Total Devices : 2 Persistence : Superblock is persistent Update Time : Thu Nov 7 06:57:49 2013 State : clean, degraded, recovering Active Devices : 1 Working Devices : 1 Failed Devices : 1 Spare Devices : 0 Rebuild Status : 0% complete Name : File-Server:1 (local to host File-Server) UUID : 44ed561f:b733e946:e69820f4:aba9b223 Events : 2431 Number Major Minor RaidDevice State 2 8 16 0 faulty spare rebuilding /dev/sdb 1 8 32 1 active sync /dev/sdc and after a few seconds: /dev/md/1: Version : 1.2 Creation Time : Sat Jun 8 22:32:05 2013 Raid Level : raid1 Array Size : 3906887360 (3725.90 GiB 4000.65 GB) Used Dev Size : 3906887360 (3725.90 GiB 4000.65 GB) Raid Devices : 2 Total Devices : 2 Persistence : Superblock is persistent Update Time : Thu Nov 7 06:57:50 2013 State : clean, degraded Active Devices : 1 Working Devices : 1 Failed Devices : 1 Spare Devices : 0 Name : File-Server:1 (local to host File-Server) UUID : 44ed561f:b733e946:e69820f4:aba9b223 Events : 2436 Number Major Minor RaidDevice State 0 0 0 0 removed 1 8 32 1 active sync /dev/sdc 2 8 16 - faulty spare /dev/sdb same behaviour if I zero the superblock (mdadm --zero-superblock /dev/sdb) before adding sdb. I do all commands as root and the system holds 3 more 4TB drives, ie the mainboard can handle them. The old harddrive was checked for errors using badblocks, but all is fine. Does anybody have any idea, what the problem is?

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• Bind9 DNS help with psuedo domains

  - by Tempname

  I have setup a dns server on my home network to manage some apps that I have written for home. Currently I have 3 "domains" that I am using: controller devserver fileserver The first issue that I am having is that when I attempt to ping the parent domain of any of these 3 I am unable to. I simply get ping: unknown host controller. I however can ping any of the subdomains I have setup for these 3 parent domains. The second issue is I am unable to ping any of the 3 parent domains or any child domains from my window machines. I have verified that these domains work on other devices in my house (ipod touch, ipad, cell phone). Any help with this is greatly appreciated Here is bind data file for my parent domain controller: ; ; BIND data file for local loopback interface ; $TTL 604800 @ IN SOA controller. admin.controller. ( 9 604800 86400 2419200 604800 ) ; @ IN NS controller. @ IN A 192.168.1.104 controller IN A 192.168.1.194 admin.controller. IN A 192.168.1.104

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• Online Storage and security concerns

  - by Megge

  I plan to set up a small fileserver. I already own a small server at HostEurope (VirtualServer L, 250GB space), but they don't offer enough space (there is the HostEurope Cloud, but paying for bandwidth isn't an option here, video-streaming should be possible) Requirements summarized: Storage: 2TB, Users: ~15, Filesizes: < 100GB, should be easily reachable (Mount as a networkdrive or at least have solid "communication" software) My first question would be: Where can I get halfway affordable online storages? And how should I connect them to my server? Getting an additional server is a bit overkill, as I know no hoster which allows 2 TB on a small 2 Ghz Dual Core 2 GB RAM thingy (that would be enough by far, I just need much space), and connecting it via NFS or FTP over Internet seems a bit strange and cripples performance. Do you have any advice where I could get that storage service from? (I sent HostEurope a custom request today, but they didn't answer till now. If they can provide me with that space, this question will be irrelevant, but the 2nd one is the more important one anway, don't do much more than recommend me some based on experience, you don't have to crawl hours through hosting services) livedrive for example offers 5 TB for 17€ / month, I'd be happy with 2 TB for 20 €, the caveat is: It doesn't allow multiple users, which leads me to my second question: Where are the security problems? Which protocol is sufficient (I want private and "public" folders etc. the usual "every user has its own and a public space"-thing), secure and fast? (I'd tend to (S)FTP, problem with FTP is: Most of those hosting services don't even allow FTP with mutliple users and single users lead me into "hacking" a solution (you could map the basic folder structure on the main server and just mount every subfolder from the storage, things get difficult with a public folder with 644 permissions though) Is useing something like PKI or 802.1X overkill for private uses?

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• DIY NAS - links for Instructions

  - by Kaushik Gopal

  Good folk of SU, I'm planning to build a NAS (Network Access Storage). I'm planning to do it cheap (:read Old PC Config + Open source software). I was looking for good DIY links . Before you shoot this down as a Repost, I'm only looking for good links containing detailed instructions for setting up a NAS. I did a fair bit of searching and found these links (so please suggest others. While these links are great they delve more on the hardware side, i'm looking for more instructions in the software side). For the sake of the interwebs: Ubuntu: http://snarfquest.com/wiki/index.php/Setting_up_a_Home_NAS http://www.smallnetbuilder.com/content/view/27962/77/ http://jonpeck.blogspot.com/2006/11/how-to-configure-80-fileserver-in-45.html FreeNAS http://www.smallbusinesscomputing.com/webmaster/article.php/3719706 http://www.codeproject.com/KB/system/homemade_nas.aspxhttp://www.codeproject.com/KB/system/homemade_nas.aspx There was one at rubbervir.us that everyone points to, but apparently the site has gone down. A couple of other queries: Is Printer/Scanner sharing a possibility with NAS devices? Many talk of torrent support with NAS Devices, a little more light on this? Does this mean, an auto download of torrent through a feed into NAS, or just support for storing Torrent download files onto the NAS(don't see the difference between the latter and a normal file tranfer)

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• Ubuntu 12.04 Server - eth0 1Gbps NIC eth1 10Gbps NIC - all traffic using eth0?

  - by James

  Ubuntu Server 12.04.1 x64 Primary role is an NFS fileserver, for Mac OSX Clients. Hardware: Eth0: 00:19.0 Ethernet controller: Intel Corporation 82579V Gigabit Network Connection (rev 04) Eth1: 07:00.0 Ethernet controller: MYRICOM Inc. Myri-10G Dual-Protocol NIC Config: ifconfig eth0 Link encap:Ethernet HWaddr <MACADDRESS> inet addr:192.168.0.150 Bcast:192.168.0.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:460042020 errors:0 dropped:148 overruns:0 frame:0 TX packets:231906707 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:581431978417 (581.4 GB) TX bytes:259057368617 (259.0 GB) Interrupt:20 Memory:f7d00000-f7d20000 eth1 Link encap:Ethernet HWaddr <MACADDRESS> inet addr:192.168.0.100 Bcast:192.168.0.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:6832208 errors:0 dropped:2 overruns:0 frame:0 TX packets:376 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:513826442 (513.8 MB) TX bytes:33688 (33.6 KB) Interrupt:59 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:507 errors:0 dropped:0 overruns:0 frame:0 TX packets:507 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:45057 (45.0 KB) TX bytes:45057 (45.0 KB) nano /etc/network/interfaces #The loopback network interface auto lo iface lo inet loopback #The primary network interface auto eth0 iface eth0 inet static address 192.168.0.150 netmask 255.255.255.0 network 192.168.0.0 broadcast 192.168.0.255 gateway 192.168.0.1 dns-nameservers 192.168.0.1 8.8.8.8 #second network interface auto eth1 iface eth1 inet static address 192.168.0.100 netmask 255.255.255.0 network 192.168.0.0 broadcast 192.168.0.255 gateway 192.168.0.1 dns-nameservers 192.168.0.1 8.8.8.8 Currently I am using on the OSX clients: nfs://192.168.0.100/Volumes/Storage to mount the NFS share. My problem is why would all the data (and I have checked using various monitoring tools bmon, iftop, glances, etc) be going over the slower connection?? Also, after configuring /etc/network/interfaces with the above setup I always get an error message at bootup something about waiting for network configuration. Are these connected?

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• Running DNS locally for home network

  - by Roy Rico

  I have a small home network that just got larger ( New roommate, My existing roommate got a laptop (on top of her computer)j, my friends coming over with laptop, etc ). I'd like to run a local DNS server for lookups of my local network stuff (fileserver.local, windowsTV.local, machineA.local, machineB.local, appletv.local). I used to have a business line with a static IP, and run bind/named internally. However, now, I have a normal account. My ISP's DNS servers are constantly changing (for whatever reasons my ISP doesn't like to keep the same IP range for long). I need my local DNS to be automatically updated to use my ISP's DNS for external traffic, but be able to maintain an internal DNS server (getting to update the hosts file is being a hassle with every new machine on top of rebuilding existing machines with win7 or Ubuntu 9.04). Additionally, My ISP's DNS servers often crash or become unresponsive. Are there any open DNS servers that are reliable (i don't want to reconfig every day) that I could use as my primary, then if those fail, then use my ISP's? UPDATE: Also looking for each workstation to be able to use dhcp to connect, but instead of getting ISP dns servers, getting my internal one.... Thanks

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• Rsync when run in cron doesnt work. Rsync between Mac Os x Server and Linux Centos

  - by Brady

  I have a working rsync setup between Mac OS X Server and Linux Centos when run manually in a terminal. I enter the rsync command, it asks for the password, I enter it and off it goes, runs and completes. Now I know thats working I set out to fully automate it via cron. First off I create an SSH authorized key by running this command on the Mac server: ssh-keygen -t dsa -b 1024 -f /Users/admin/Documents/Backup/rsync-key Entering the password and then confirming it. I then copy the rsync-key.pub file accross to the linux server and place in the rsync user .ssh folder and rename to authorized_keys: /home/philosophy/.ssh/authorized_keys I then make sure that the authorized_keys file is chmod 600 in the folder chmod 700. I then setup a shell script for cron to run: #!/bin/bash RSYNC=/usr/bin/rsync SSH=/usr/bin/ssh KEY=/Users/admin/Documents/Backup/rsync-key RUSER=philosophy RHOST=example.com RPATH=data/ LPATH="/Volumes/G Technology G Speed eS/Backup" $RSYNC -avz --delete --progress -e "$SSH -i $KEY" "$LPATH" $RUSER@$RHOST:$RPATH Then give the shell file execute permissions and then add the following to the crontab using crontab -e: 29 12 * * * /Users/admin/Documents/Backup/backup.sh I check my crontab log file after the above command should run and I get this in the log and nothing else: Feb 21 12:29:00 fileserver /usr/sbin/cron[80598]: (admin) CMD (/Users/admin/Documents/Backup/backup.sh) So I asume everything has run as it should. But when I check the remote server no files have been copied accross. If I run the backup.sh file in a terminal as normal it still prompts for a password but this time its through the Mac Key chain system rather than typing into the console window. With the Mac Key Chain I can set it to save the password so that it doesnt ask for it again but Im sure when run with cron this password isnt picked up. This is where I'm asuming where rsync in cron is failing because it needs a password to connect but I thought the whole idea of making the SSH keys was to prevent the use of a password. Have I missed a step or done something wrong here? Thanks Scott

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• Win 2008 R2 - copying TO disk is very slow, copying FROM is more or less okay

  - by avs099

  I have Windows 2008 R2 SP1 with 4 identical SATA disks (Seagate Barracude 7200) in RAID 5 array. It has 4Gb of memory; all recent updates are installed. Problem: when I copy large file from one folder to another, I get about 10MB/s average speed. When I read this file from network share via 1Gbps connection - I get about 25-30 MB/s. Both numbers seems to be low for me - but specifically I'm very frustrated with low write speed. there is no antivirus, no hyper-v, it's just a fileserver - i when i do my tests nobody else reads/write from it (we have only 4 people in a team, so I'm sure). Not sure if that matters, but there is only 1 logic disk "C" with all available space (1400 GB). I'm not an admin at all, so I have no idea where to look and what other information to provide. I did run performance monitor with "% idle time", "avg bytes read", "avg byte write" - here is the screenshot: I'm not sure why there are such obvious spikes. Any idea? Please let me know if you need me to provide more information - what counters should I check, etc. I'm very eager to get this solved. Thank you. UPDATE: we have another Windows 2008 R2 SP1 server with 2 RAID1 arrays - one is disk C (where windows is installed, another one is disk E). It is running Hyper-V and does not have antivirus. I noticed the following behavior when I copy large file (few GBs): C - C: about 50MB/sec C - E: about 55MB/sec E - E: 8MB/sec!!! E - C: 8MB/sec!!! what could cause this?? E drive is RAID1 array from same Seagate Barracuda 1TB drives..

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• Sluggish Windows SBS 2003

  - by TomWilsonFL

  One of my customers has a Windows 2003 Small Business Server which at this point is basically the DC, DNS, Fileserver and Symantec Protection Manager. I have disabled Exchange because I moved their mail to Google Apps. The server is extremely sluggish when doing anything. It is most noticeable when a dialog box is open (say the System properties), and you try to change tabs. This is usually instant, but on this machine can take 3-5 seconds. What additional services / packages can I uninstall from this machine knowing that it is only performing the above roles? Will removing the "Small Business Server" package in Add / Remove Programs get rid of a few unnecessary things? Any other thoughts? P.S. I know Symantec Endpoint and the Protection Manager are hogs, but I have nothing to replace the solution with at the moment. Thanks, Tom UPDATE: I looked over the different performance metrics, but nothing stood out as a problem. One of my friends mentioned Symantec's log and temp files can get quite huge and slow things down, so I ran CCleaner on the machine and found close to 3 GB of Symantec "stuff." Removed that and now the machine is MUCH better. I am still unsure why the data just sitting there would cause such a slowdown. The drive is not even near full. The only thing I can imagine is that Symantec must have to run through this stuff now and then.

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• Archiving mails with postfix: how to filter mails?

  - by Tronic

  i wanto to implement the following scenario: we use a postfix mailserver. to archive all old and new mails, i want to setup a second postfix on our fileserver and create a single mailbox "archive". then every mail gets forwarded as bcc to this mailbox automatically. now, i want to create different folders in a maildir structure and let the server move each mail to the right subfolder of the mailbox based on its sender or receiver. e.g. when we get a mail to one of our employees named "John Doe" at [email protected], the mail should be moved to "Inbox/John Doe Incoming". the same applies when john doe sends a mail, folder would be "Inbox/John Doe Outgoing". how can i implement this filter behaviour. i heard of Procmail and Maildrop. Which of the two would you prefer? Which is more easy to configure? Any out-of-box solutions here? thanks in advance!

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• How can I debug a port/connectivity issue?

  - by rfw21

  I am running a simple WebSocket server on Amazon EC2 (Fedora Core). I've opened the relevant port using ec2-authorize, and checked that it's opened. Iptables is definitely not running. However I can't connect to the port from outside EC2. I've tried the following (my server is running on port 7000): telnet ec2-public-dns.xx.xx.xx.amazon.com 7000 (from within EC2: connects fine) nmap localhost (output includes line: 7000/tcp open afs3-fileserver) telnet ec2-public-dns.xx.xx.xx.amazon.com 7000 (this time from my local machine: I get "connection refused: Unable to connect to remote host") The strange thing is this: if I start Nginx on port 7000 then it works and I can connect from outside EC2! And the WebSocket server fails on port 80, where Nginx works fine. To me this suggests a problem with the WebSocket server, BUT I can connect to it successfully from within EC2. (And it works fine on a different VPS account). How can I debug this further? If anybody can stop me tearing my hair out, I'd be very grateful indeed :)

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• Xen PV packet loss

  - by Delphinator

  I'm having some serious issues with packetloss with one of my servers. This server is a somewhat old (P4-era) machine running Debian Squeeze and Xen 4.0. There are two domUs running on it (both also Debian Squeeze), one gateway and a fileserver. Unfortunatly the processor has no virtualization extensions, therefore only PV can be used. While investigating why our network seems to be slower than it should I found some pretty bad packet loss (~25%). After further investigation and several experiments I did a measurment between the dom0 and one of the domUs: Server listening on UDP port 5001 Receiving 1470 byte datagrams UDP buffer size: 110 KByte (default) ------------------------------------------------------------ ------------------------------------------------------------ Client connecting to dom0, UDP port 5001 Sending 1470 byte datagrams UDP buffer size: 110 KByte (default) ------------------------------------------------------------ [ 3] local 192.168.1.2(domU) port 33817 connected with 192.168.1.100(dom0) port 5001 [ 4] local 192.168.1.2(domU) port 5001 connected with 192.168.1.100(dom0) port 48606 [ ID] Interval Transfer Bandwidth [ 3] 0.0-10.0 sec 46.3 MBytes 38.7 Mbits/sec [ 3] Sent 33020 datagrams [ 3] Server Report: [ 3] 0.0-10.0 sec 46.2 MBytes 38.6 Mbits/sec 0.030 ms 89/33019 (0.27%) [ 3] 0.0-10.0 sec 1 datagrams received out-of-order [ 4] 0.0-10.2 sec 43.0 MBytes 35.3 Mbits/sec 13.074 ms 11575/42256 (27%) tl;dr: 27% packet loss from dom0 to domU with 50Mbit UDP packets. Same thing happens from anywhere in the network. The problem gets better for smaller bandwidths (0.047% for 5Mbit) and worse for higher (59% for 200Mbit) ones. I did increase the CPU-weight of the dom0, there is no swapping going on, and actual networking-hardware is not involved. I never expected Xen (or anything related) to drop packets, and I'm completly clueless what to try next.

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• Free tiered storage automation in linux?

  - by NginUS

  I have a couple virtualized fileservers running in QEMU/KVM on ProxmoxVE. The physical host has 4 storage tiers with significant performance variances. They're attached both locally and via NFS. These will be provided to the fileserver(s) as local disks, abstracted into pools, and handling multiple streams of data for the network. My aim is for this abstraction layer to intelligently pool the tiers. There's a similar post on the site here: Home-brew automatic tiered storage solutions with Linux? (Memory - SSD - HDD - remote storage) in which the accepted answer was a suggestion to abandon a linux solution for NexentaStor. I like the idea of running NexentaStor. It almost fits the bill. NexentaStor provides Hybrid Storage Pools, and I love the idea of checksumming. 16TB without incurring licensing fees is a huge plus as well. After the expense of the hardware, free is about all my budget can handle. I don't know if zfs pools are adaptive or dynamically allocated based on load, but it becomes irrelevant since NexentaStor doesn't support virtio network or block drivers, which is a must in my environment. Then I saw a commercial solution called SmartMove: http://www.enigmadata.com/smartmove.html And it looks like a step in the right direction, but I'm so broke I'd be wasting their time to even ask for a quote, so I'm looking for another option. I'm after a linux implementation that supports virtio drivers, and I'm at a loss as to which software is up to it.

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• Defrag starting when not scheduled. What is triggering the defrag

  - by leroyclark

  I have a fileserver that is starting a defrag around 2:00 PM everyday. This is killing performance as it runs for ours becuase this is a file server and has multiple drives. All scheduled tasks regarding defrag have been disabled. I have verified that it is accessing the data drives(using SysInternals tools). The reason I might have though otherwise was the event log has multiple entries regarding defragging a db file related to shadow copies. Oh yes these drives take shadow copy snapshots multiple times per day but the times of them don't coincide with the defrag task. There is nothing in the event logs regarding defrag except those noted above in relation to shadow copies. I'm out of ideas looking for what is starting these jobs. One possiblility is that the drives are not being defgramented, but being analyized to determine if they need to be defragmented. I manually ran an analysis and the cpu usage(by dfrgntfs.exe) seems to be similar to what I'm seeing everday while the defrag process is running. However I've found no setting that schedules this analysis.

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• Location directive in nginx configuration

  - by ryan

  I have an nginx server setup to act as a fileserver. I want to set the expires directive on images. This is how a part of my config file looks like. http { include /etc/nginx/mime.types; access_log /var/log/nginx/access.log; sendfile on; #tcp_nopush on; #keepalive_timeout 0; keepalive_timeout 65; tcp_nodelay on; gzip on; gzip_disable "MSIE [1-6]\.(?!.*SV1)"; location ~* \.(ico|jpg|jpeg|png)$ { expires 1y; } include /etc/nginx/conf.d/*.conf; include /etc/nginx/sites-enabled/*; } I get the following error when I reload config - "Location directive not allowed here". Can someone tell me what the right syntax for this is? Thanks in advance. EDIT : Found the answer myself. Added it in a comment. Closing this.

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• ZFS with L2ARC (SSD) slower for random seeks than without L2ARC

  - by Florian Kruse

  I am currently testing ZFS (Opensolaris 2009.06) in an older fileserver to evaluate its use for our needs. Our current setup is as follows: Dual core (2,4 GHz) with 4 GB RAM 3x SATA controller with 11 HDDs (250 GB) and one SSD (OCZ Vertex 2 100 GB) We want to evaluate the use of a L2ARC, so the current ZPOOL is: $ zpool status pool: tank state: ONLINE scrub: none requested config: NAME STATE READ WRITE CKSUM afstank ONLINE 0 0 0 raidz1 ONLINE 0 0 0 c11t0d0 ONLINE 0 0 0 c11t1d0 ONLINE 0 0 0 c11t2d0 ONLINE 0 0 0 c11t3d0 ONLINE 0 0 0 raidz1 ONLINE 0 0 0 c13t0d0 ONLINE 0 0 0 c13t1d0 ONLINE 0 0 0 c13t2d0 ONLINE 0 0 0 c13t3d0 ONLINE 0 0 0 cache c14t3d0 ONLINE 0 0 0 where c14t3d0 is the SSD (of course). We run IO tests with bonnie++ 1.03d, size is set to 200 GB (-s 200g) so that the test sample will never be completely in ARC/L2ARC. The results without SSD are (average values over several runs which show no differences) write_chr write_blk rewrite read_chr read_blk random seeks 101.998 kB/s 214.258 kB/s 96.673 kB/s 77.702 kB/s 254.695 kB/s 900 /s With SSD it becomes interesting. My assumption was that the results should be in worst case at least the same. While write/read/rewrite rates are not different, the random seek rate differs significantly between individual bonnie++ runs (between 188 /s and 1333 /s so far), average is 548 +- 200 /s, so below the value w/o SSD. So, my questions are mainly: Why do the random seek rates differ so much? If the seeks are really random, they should not differ much (my assumption). So, even if the SSD is impairing the performance it should be the same in each bonnie++ run. Why is the random seek performance worse in most of the bonnie++ runs? I would assume that some part of the bonnie++ data is in the L2ARC and random seeks on this data performs better while random seeks on other data just performs similarly like before.

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• Can't write to samba share

  - by Tiddo

  I try to setup a samba file server, but whatever I do I can't get write access to work (reading works fine). This is my current situation: I have a local fileserver with 3 harddisks mounted at /mnt/share/disk<nr>. 2 of these use the ext4 filesystem, the third one is ntfs. This file server runs Fedora 18 32-bit. The root folders of these harddisks are owned by superman:superman, and testparm outputs the following: [global] workgroup = WORKGROUP netbios name = FILE_SERVER server string = Samba Server Version %v interfaces = lo, eth0, 192.168.123.191/8 log file = /var/log/samba/log.%m max log size = 50 unix extensions = No load printers = No idmap config * : backend = tdb hosts allow = 192.168.123. cups options = raw wide links = Yes [share] comment = Home Directories path = /home/share/ write list = superman, @users force user = superman read only = No create mask = 0777 directory mask = 0777 inherit permissions = Yes guest ok = Yes I've tried a lot to get this to work: the disk are chmodded to 777, I've tried turning off selinux, I've added the samba_share_t label to the disks and as can be seen in the above output I tried to make the smb config as permissive as I could, but still I cannot write to the share (tried from Windows 7 and another Fedora installation). What can I try to be able to write to the shares? EDIT: The replies I got so far are mostly concerned with the smb.conf. I have however tried a lot of different setup, ready made configs, and solutions to similar problems for the smb.conf file, so I suspect that the real problem is somewhere else.

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• EXCEL workbook, intermitently, takes 30 seconds to load

  - by Julio Nobre

  I am trying to figure out why a simple .XLS EXCEL workbook is taking, randomly, 30 seconds to open. Before answering: Please, bear mind the following: Problem symptoms Hanging is intermitent and it takes exactly 30 seconds; During hanging there is no cpu or disk activity; It only happens during workbook load. Every runs smooth after that; Windows Explorer.exe hangs on folder, but all other folders, system and applications are still responsive; There are no consecutive hangings. I have to wait for while to reproduce this behaviour; All workbooks where located on a local drive (C:\BPI); The workbook has no macros and no addins; Office 2003 is being used for several years; The computer is running Windows XP; Computer has several network mapped drives, all addressed to main file server; Recently, main fileserver was replaced by Windows 2011 SBS Standard Edition What I have done so far I have traced machine Explorer.exe, using Process Monitor, added Duration column, and filtered by Duration 1. That's is how I found that hanging was taking exactly 30 seconds. For further information, please refer to Oliver Salzburg tutorial. Using Process Monitor, I have also figured out than five operations were taking most of sample collecting duration. Looking at sample image below, column Operation below you will notice that one single operation was taking 29 seconds; I have tried different workbooks (all of them smaller than 30 KB); I have, temporarily, removed all shortcuts on User Document's folder that were pointing to network drives or shares; I have runned CCleaner to fix registry issues; I made sure that there were no external links on tested workbooks; I have reproduced this behaviour for hours; I have extensivelly researched for hours on the web; Process Monitor's collected and filtered data

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• Outlook locking network connection/session?

  - by HaydnWVN

  Scenario: We have an 'automatic orders' machine sat in the corner running XP with Outlook 2003. Its job is to check for new emails on a specific account, when it encounters one it checks the e-mail body for specific wording to determine which customer it is from (using a macro), then it checks the attachment for specific order codes before parsing the attachment to create a .csv file (which is then e-mailed onto one of the sales team) before importing the .csv into our bespoke ERP/Sales Order system to create an order. Problem: Periodically the machine will have symptoms of a lost network connection (unable to connect to any network source). Sometimes after several days, sometimes over a week. Volume of emails/orders processed does not seem to be linked. Additional info: The machines .pst is stored on a mapped network location. The .csv created is stored on a mapped network location. This is a workgroup, not a domain. All network drives are Samba shares from an Ubuntu fileserver. Our bespoke system runs from a database (MySQL) Ubuntu server. Our troubleshooting so far: I have switched machines (previous was Win2000) with the same symptoms. Restarting the machine FIXES the problem. Closing Outlook and then end tasking an Outlook.exe background process FIXES the problem. If you close Outlook, without end taking the background process, outlook will not reopen (saying it cannot find the pst file & it will not open any network location). Does Outlook have some kind of 'max session' linking it to network activity that is not closing after a mail request? Could Auto-archive be causing this? Is there a tool to check/display what each outlook.exe process is doing? Have not found many ways to troubleshoot this yet, as it is so infrequent...

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• Join multiple filesystems (on multiple computers) into one big volume

  - by jm666

  Scenario: Have 10 computers, each have 12x2TB HDDs (currently) in raidZ2 (10+2) configuration, so, in the each computer i have one approx. 20TB volume. Now, need those 10 separate computers (separate raid groups) join into one big volume. What is the recommended solution? I'm thinking about the FCoE (10GB ethernet). So, buying into each computer FCoE (10GB ethernet card) and - what need more on the hardware side? (probably another computer, FCoE switch? like Cisco Nexus?) The main question is: what need to install and configure on each computer? Currently they have freebsd/raidz2, but it is possible change it into Linux/Solaris if needed. Any helpful resource what talking about how to build a big volumes from smaller raid-groups (on the software side) is very welcomed. So, what OS, what filesystem, what software - etc. In short: want get one approx. 200TB storage (in one filesystem) from already existing computers/storage. Don't need fast writes, but need good performance on reading data. (as a big fileserver), what will works transparently, so when storing data don't want care about onto what computer the data goes. (e.g. not 10 mountpoints - but one big logical filesystem). Thanks.

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• dd on entire disk, but do not want empty portion

  - by Jonathan Henson

  I have a disk, say /dev/sda. Here is fdisk -l: Disk /dev/sda: 64.0 GB, 64023257088 bytes 255 heads, 63 sectors/track, 7783 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: 0x0000e4b5 Device Boot Start End Blocks Id System /dev/sda1 * 1 27 209920 83 Linux Partition 1 does not end on cylinder boundary. /dev/sda2 27 525 4000768 5 Extended Partition 2 does not end on cylinder boundary. /dev/sda5 27 353 2621440 83 Linux /dev/sda6 353 405 416768 83 Linux /dev/sda7 405 490 675840 83 Linux /dev/sda8 490 525 282624 83 Linux I need to make an image to store on our file server for use in flashing other devices we are manufacturing so I only want the used space (only about 4gb). I want to keep the mbr etc... as this device should be boot ready as soon as the copy is finished. Any ideas? I previously had been using dd if=/dev/sda of=[//fileserver/file], but at that time, my master copy was on a 4gb flash ide.

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• Windows Search not searching in files

  - by Cylindric

  I am trying to get Windows Search to work on my Windows Server 2008 SP2 fileserver, so I can search in files for content. I have added the Windows Search Service role to the server, and using the right-click properties in Explorer set some folders to "Index this location". The problem is that neither on the server or remotely can I search in the files. I seem to get some inconsistencies in the GUIs, for example the "Indexing Options" panel shows me just 6 locations indexed, but if I click "Modify" I see nearly everything ticked. For example, the "SeachTest" folder under "infrastructure" has the "index this location" option ticked, but the "Projects" folder does not. I assume this is why some are grey and some not, but they are all ticked. T The "SearchTest" folder contains some files that have nothing but the text PurpleOrange in it, so I should be able to find those. So, to summarise: Which locations are indexed? The ones in the "Index these locations" list, the ones ticked, or the ones not greyed-out in the list? How do I get to the state where I can click in the search box and type PurpleOrange and see the files?

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• ldap-authentication without sambaSamAccount on linux smb/cifs server (e.g. samba)

  - by umlaeute

  i'm currently running samba-3.5.6 on a debian/wheezy host to act as the fileserver for our department's w32-clients. authentication is done via OpenLDAP, where each user-dn has an objectclass:sambaSamAccount that holds the smb-credentials and an objectclass:shadowAccount/posixAccount for "ordinary" authentication (e.g. pam, apache,...) now we would like to dump our department's user-db, and instead use authenticate against the user-db of our upstream-organisation. these user-accounts are managed in a novell-edirectory, which i can already use to authenticate using pam (e.g. for ssh-logins; on another host). our upstream organisation provides smb/cifs based access (via some novell service) to some directories, which i can access from my linux client via smbclient. what i currently don't manage to do is to use the upstream-ldap (the eDirectory) to authenticate our institution's samba: i configured my samba-server to auth against the upstream ldap server: passdb backend = ldapsam:ldaps://ldap.example.com but when i try to authenticate a user, i get: $ smbclient -U USER \\\\SMBSERVER\\test Enter USER's password: Domain=[WORKGROUP] OS=[Unix] Server=[Samba 3.6.6] tree connect failed: NT_STATUS_ACCESS_DENIED the logfiles show: [2012/10/02 09:53:47.692987, 0] passdb/secrets.c:350(fetch_ldap_pw) fetch_ldap_pw: neither ldap secret retrieved! [2012/10/02 09:53:47.693131, 0] lib/smbldap.c:1180(smbldap_connect_system) ldap_connect_system: Failed to retrieve password from secrets.tdb i see two problems i'm having: i don't have any administrator password for the upstream ldap (and most likely, they won't give me one). i only want to authenticate my users, write-access is not needed at all. can i go away with that? the upstream ldap does not have any samba-related attributes in the db. i was under the impression, that for samba to authenticate, those attributes are required, as smb/cifs uses some trivial hashing which is not compatible with the usual posixAccount hashes. is there a way for my department's samba server to authenticate against such an ldap server?

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