Search Results

Search found 24623 results on 985 pages for 'linux'.

Page 402/985 | < Previous Page | 398 399 400 401 402 403 404 405 406 407 408 409  | Next Page >

• How do I Forward root's email to an external email address?

  - by ErebusBat

  I have a small server (Ubuntu 10.04) at my house and I would like to forward root's email to my gmail hosted domain to get security notifications and what not. I ripped everything out and started from scratch and ran into some other issues. I now have sendmail working in the sense that I can mail [email protected] and get the mail. HOWEVER, adding an address to /root/.forward does not actually forward the message. I get the following in my logs: Dec 22 14:04:37 batcave sendmail[4695]: oBML4bAT004695: to=<root@batcave>, ctladdr=aburns (1000/1000), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30075, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (oBML4bJ9004696 Message accepted for delivery) Dec 22 14:04:39 batcave sm-mta[4698]: STARTTLS=client, relay=[69.145.248.18], version=TLSv1/SSLv3, verify=FAIL, cipher=DES-CBC3-SHA, bits=168/168 Dec 22 14:04:40 batcave sm-mta[4698]: oBML4bJ9004696: to=<[email protected]>, ctladdr=<[email protected]> (1000/1000), delay=00:00:03, xdelay=00:00:03, mailer=relay, pri=120336, relay=[69.145.248.18] [69.145.248.18], dsn=2.0.0, stat=Sent (OK 01/D4-00853-216621D4) You can see where my local sendmail instance accepts it then hands it off to my ISP, but with the wrong address ([email protected]).

  Read the article

• How can I fix Problems with interlaced video jerking/flicking when playedback on DVD players? (Mixin

  - by Simon P Stevens

  I'm trying to make a DVD and the final DVD jerks when played on standalone DVD players. It seems to play fine on PCs. I think the problem may be to do with interlacing settings when rendering the final output, but I'll outline the whole editing process I have followed in case I've made a mistake somewhere else. Most of the footage comes from a sony handy cam (one of those mini DVD ones) so isn't great quality. It was set to "high quality" (haha) and 16:9 aspect ratio when it was recorded. I copy the files directly from the mini DVDs onto the hard drive and import them into Cinelerra. In Cinelerra I set the format to 25fps, 720x576, RGBA-8bit, 16:9, interlaced bottom fields first. When I've finished the editing, I add a Fields to frames effect (set to bottom first) to each video track. I render to audio and video separately: Audio: AC3, 128kbps Video: YUV4MPEG steam, video pipe settings: ffmpeg -f yuv4mpegpipe -i - -y -target dvd -flags +ilme+ildct mpeg2video % Cinelerra often crashes during the rendering, so I set it to generate a new video file at each label, and combine them using cat when I've got a sucesful render of each one. Once I've combined them, I use mencoder to re-index them: mencoder -forceidx -oac copy -ovc copy merged.m2v -o mergedReIndexed.m2v I combine the audio and video files using ffmpeg: ffmpeg -i AudioFile.ac3 -i VideoFile.m2v -target dvd -flags +ilme+ildct FinalMovie.mpg Then I build the menus with spumux and I create the DVD file system with dvdauthor, and finally I write it do a dvd-r like this: nice -n -20 growisofs -dvd-compat -speed=2 -Z /dev/dvd -dvd-video -V VIDEO ./ && eject /dev/dvd Originally, when I did it the DVD flickered badly, so as suggested in a guide I added the fields to frames effect in cinelerra. Now it doesn't "flicker", but has become "jerky" when there is lots of motion, particularly when the camera is moving, so the whole background moves. This is what I've tried so far: Removed "mpeg2video" from cinelerra video render pipe. Removed +ilme from render pipe. Removed +ildct from render pipe. Removed +ilme from render audio/video rejoin command. Removed +ildct from render audio/video rejoin command. Added -alt to render pipe. Added -alt to render audio/video rejoin command. Tried with and without the frames to fields effect in Cinelerra. and various combinations of the above. I've also tried this: change the Cinelerra fps to 50, use fields to frames (instead of frames to fields), render to an intermediate QTforlinux jpeg video stream, re-importing that back into Cinelerra, adding a frames to fields effect and then rendering that output as normal (@25fps), and I still have the same problem. Has anyone experienced this "jerking" playback before? Can anyone give any suggestions on how to fix it? (Like I say, it plays back fine on a PC, but not on any of the standalone players I've tried)

  Read the article

• Changing MAC address on the Fly on old kernel 2.6.x

  - by shaiss

  I'm doing some research on old kernels and running the following on 2.6.7 or 2.6.8 gives a resource busy error. But on 2.6.28 the command works as expected. How would I determine which kernel allowed this command to change the mac address on the fly? ip link set dev addr You can see some screenshots below. Thank you!

  Read the article

• Daemons did not start automatically ubuntu 10.04

  - by Anton Prokofiev

  Hello, All! I have a strange behavior on Ubuntu 10.4: few daemons (apache2 and postgresql (8.4SS from enterpriseDB) did not start automatically. Funny things that time-to-to they do. (If I just restart my computer everything looks ok, but if I turn it off for the night, nothing work..., so I have to start them manually) I've googled this problem a little bit, but the only answer I have found was to run: sudo update-rc.d apache2 defaults I've called it but the answer was: System start/stop links for /etc/init.d/apache2 already exist. Any Ideas?

  Read the article

• How can I make grub2 boot into Windows 7?

  - by Grzenio

  I had Windows 7 installed on my system, then I installed Debian testing with grub2 as its boot manager. Initially I couldn't see windows entry in grub at all, so I ran: aptitude install os-prober kcpuload update-grub Now I can see the entry, but when I select it I get only Win7 system restore, instead of the the real thing. Any ides how to make it work? EDIT: I tried the suggested approach to add a new file to /etc/grub.d, which generated an entry in grub.cfg, but it does not appear in the grub menu on boot :( I have this: grzes:/home/ga# cat /etc/grub.d/11_Windows #! /bin/sh -e echo Adding Windows >&2 cat << EOF menuentry “Windows 7? { set root=(hd0,2) chainloader +1 } And I have the following grub.cfg file: grzes:/home/ga# cat /boot/grub/grub.cfg # # DO NOT EDIT THIS FILE # # It is automatically generated by /usr/sbin/grub-mkconfig using templates # from /etc/grub.d and settings from /etc/default/grub # ### BEGIN /etc/grub.d/00_header ### if [ -s $prefix/grubenv ]; then load_env fi set default="0" if [ ${prev_saved_entry} ]; then set saved_entry=${prev_saved_entry} save_env saved_entry set prev_saved_entry= save_env prev_saved_entry set boot_once=true fi function savedefault { if [ -z ${boot_once} ]; then saved_entry=${chosen} save_env saved_entry fi } insmod ext2 set root=(hd0,3) search --no-floppy --fs-uuid --set 6ce3ff31-0ef7-41df-a6f5-b6b886db3a94 if loadfont /usr/share/grub/unicode.pf2 ; then set gfxmode=640x480 insmod gfxterm insmod vbe if terminal_output gfxterm ; then true ; else # For backward compatibility with versions of terminal.mod that don't # understand terminal_output terminal gfxterm fi fi set locale_dir=/boot/grub/locale set lang=en insmod gettext set timeout=5 ### END /etc/grub.d/00_header ###

  Read the article

• circumstances where software change leads to device damage

  - by nerorevenge

  Recently I changed a friend's OS from a really virus filled windows 7 to Ubuntu ..but kept changing os's because lsusb wouldn't detect the camera.But after coming back to windows, the camera wasn't detected, though I must point out the device driver for the camera was never found. The Sony 'technician' told me that that since the dev-manager of windows 7 couldn't detect the camera , irregardless of whether the device driver was installed, the software change must have damaged the hardware. I was wondering if there is any truth to it.

  Read the article

• How do I delete a folder named "-p" from bash?

  - by fmark

  How do I delete a file named -p in bash? Trying rm "-p" complains that -p is not a valid argument.

  Read the article

• CHROOT for shell script testing

  - by Josh

  I am looking at setting up a shell script in order to properly document and automate the process I am using to setup a few servers we have. In order to test the shell script through its different stages I was thinking a CHROOT would be ideal, since I can wipe out the "virtual root" and create it on the fly. I have never used CHROOT before, however. I was just curious what are the exact steps I would need to follow to implement this process of creating a chroot (with the basic core functions that would be needed to install apache/php/etc.)? and then destroying it?

  Read the article

• Having munin server monitoring problem: Graphs not being generated.

  - by geerlingguy

  When I run munin-cron (munin-cron --debug), I get the following error: 2010/05/10 13:39:01 [WARNING] Call to accept timed out. Remaining workers: archstl.org;archstl.archstl.org 2010/05/10 13:39:01 [DEBUG] Active workers: 1/8 These errors simply keep repeating themselves until I quit munin-cron. I've followed the directions for debugging munin on the 'Debugging Munin plugins' wiki page, but I get the following results when going through their directions: After telnetting to localhost 4949, I can see a list of plugins, see a node at archstl.archstl.org, but can't fetch anything. The output is as follows: >fetch cpu . However, on the same machine (which is both the node and the master munin server), I can run munin-run cpu, and it prints the results correctly to the command line, like so: user.value 100829130 nice.value 3479880 system.value 13969362 idle.value 664312639 iowait.value 12180168 irq.value 14242 softirq.value 199526 steal.value 0 Looking at the wiki page mentioned above, it looks like it might be a plugin environment problem, but I can't figure out how to fix/change this... If the plugin does run with munin-run but not through telnet, you probably have a PATH problem. Tip: Set env.PATH for the plugin in the plugin's environment file.

  Read the article

• Groups and Symlinks, is this safe?

  - by sjohns

  Hi, Im trying to serve similar content over two websites, but don't want to have 2 of each file, especially when they are growing. The basics, im running CentOS, with cPanel. Is it safe to do the following, I have folder downloads1 in /home/user1/www/downloads1/ i have user2, can i make a group - groupadd sharedfiles add both users to the group: useradd -g sharedfiles user1 useradd -g sharedfiles user2 then chown -r -v user1:sharedfiles downloads1/ User 2 i want to have /home/user2/www/downloads1 but i want it to be a symlink like ln "downloads1" "/home/user1/www/downloads1/" lrwxrwxrwx 1 user2 sharedfiles 11 May 9 14:20 downloads1 -> /home/user1/www/downloads1/ Is this a safe practice? Or is there a better way to do this if I want them both to be able to share the files for distribution over apache. Is there any drawbacks to this? Thanks in advance for any light shed on this. I'm not 100% sure weather this should have gone here or on serverfault.

  Read the article

• Groups and Symlinks, is this safe?

  - by sjohns

  Hi, Im trying to serve similar content over two websites, but don't want to have 2 of each file, especially when they are growing. The basics, im running CentOS, with cPanel. Is it safe to do the following, I have folder downloads1 in /home/user1/www/downloads1/ i have user2, can i make a group - groupadd sharedfiles add both users to the group: useradd -g sharedfiles user1 useradd -g sharedfiles user2 then chown -r -v user1:sharedfiles downloads1/ User 2 i want to have /home/user2/www/downloads1 but i want it to be a symlink like ln "downloads1" "/home/user1/www/downloads1/" lrwxrwxrwx 1 user2 sharedfiles 11 May 9 14:20 downloads1 -> /home/user1/www/downloads1/ Is this a safe practice? Or is there a better way to do this if I want them both to be able to share the files for distribution over apache. Is there any drawbacks to this? Thanks in advance for any light shed on this. I'm not 100% sure weather this should have gone here or on serverfault.

  Read the article

• fstab and cifs mounting, possible to store authentication information outside of fstab?

  - by tj111

  I am currently using cifs to mount some network shares (that require authentication) in /etc/fstab. It works excellently, but I would like to move the authentication details (username/pass) outside of fstab and be able to chmod it 600 (as fstab can have issues if I were to change its permissions). I was wondering if it is possible to do this (many-user system, don't want these permissions to be viewable by all users). from: //server/foo/bar /mnt/bar cifs username=user,password=pass,r 0 0 to: //server/foo/bar /mnt/bar cifs <link to permissions>,r 0 0 (or something analogous to this). Thanks.

  Read the article

• Feeding the kernels entropy source from other machines and/or increasing its maximum size

  - by David Spillett

  We have has a little trouble with a small box that acts as a VPN end-point and mail relay for our network, caused by the available entropy for /dev/random being too low (which causes TLS connection attempts by exim to fail). The machine doesn't do anything else, so the normal feed into the entropy pool (interrupt timings from things like disk access) is not enough. As a quick hack I've set a looping script that reads from /dev/hda at a couple of Mbyte/sec which keeps it topped up. Other than buying a hardware RNG, is there a clean way of piping data for entry from elsewhere, such as a copy of the data our file server uses for its entropy source? I've spotted several tips for using rng-tools to feed it from /dev/urandom on the same machine but that "feels dirty". Also, is it possible to increase the maximum pool size? It currently seems to max out at 3585.

  Read the article

• Will these instructions work when turning of journaling on an ext4 SSD?

  - by snowlord

  I have an Acer Aspire One with an SSD for storage. I recently installed Ubuntu on it and chose ext4 for my filesystem. Then I read that journaling on an SSD isn't the best idea, so I will try to disable journaling and I have found these intstructions (from http://fenidik.blogspot.com/2010/03/ext4-disable-journal.html): # Create ext4 fs on /dev/sda10 disk mkfs.ext4 /dev/sda10 # Enable writeback mode. This mode will typically provide the best ext4 performance. tune2fs -o journal_data_writeback /dev/sda10 # Delete has_journal option tune2fs -O ^has_journal /dev/sda10 # Required fsck e2fsck -f /dev/sda10 # Check fs options dumpe2fs /dev/sda10 |more For more performance add fstab opions: data=writeback,noatime,nodiratime i.e: /dev/sda10 /opt ext4 defaults,data=writeback,noatime,nodiratime 0 0 I will use them on my boot partition. Are there any particularly bad parts here, or are there any missing steps? Will my boot partition be fit for being on an SSD after this? Or should I consider switching to ext2, or even reinstall it all and choose ext2 at partitioning time (I'd rather not though, since I've configured quite some stuff already)?

  Read the article

• Httpd and LDAP Authentication not working for sub-pages

  - by DavisTasar

  I just recently installed a Nagios implementation, and I'm trying to get LDAP authentication working for httpd on Red Hat. (nagios.conf for Apache config below, sanitized of course) ScriptAlias /nagios/cgi-bin "/usr/local/nagios/sbin" <Directory "/usr/local/nagios/sbin"> #SSLRequireSSL Options ExecCGI AllowOverride none AuthType Basic AuthName "LDAP Authentication" AuthLDAPURL "ldap://my.domain.controller:389/OU=Users,DC=my,DC=domain,DC=controller?sAMAccountName?sub?(objectClass=user)" NONE AuthzLDAPAuthoritative off AuthLDAPBindDN "CN=NagiosAdmin,DC=my,DC=domain,DC=controller" AuthLDAPBindPassword "myPassword" require valid-user </Directory> Alias /nagios "/usr/local/nagios/share" <Directory /usr/local/nagios/share> #SSLRequireSSL Options None AllowOverride none AuthBasicProvider ldap AuthType Basic AuthName "LDAP Authentication" AuthzLDAPAuthoritative off AuthLDAPURL "ldap://my.domain.controller:389/OU=Users,DC=my,DC=domain,DC=controller?sAMAccountName?sub?(objectClass=user)" NONE AuthLDAPBindDN "CN=NagiosAdmin,DC=my,DC=domain,DC=controller" AuthLDAPBindPassword "myPassword" require valid-user </Directory> Now, the initial authentication works, so when you first hit the page you can log in just fine. However, when you go anywhere else, it prompts you for authentication, fails (asking for a re-prompt), and gives this error message: [Mon Oct 21 14:46:23 2013] [error] [client 172.28.9.30] access to /nagios/cgi-bin/statusmap.cgi failed, reason: verification of user id '<myuseraccount>' not configured, referer: http://<nagiosserver>/nagios/side.php I'm almost certain its a simple flag or option, but I just can't find it, and I don't have a lot of experience working with Apache. Any assistance or help would be greatly appreciated.

  Read the article

• Rsync and Lazy mode ?

  - by fabien-barbier

  Since transferring or copying a file that is being used sometimes causes corruption of the transferred file, can we define a time interval in which Rsync checks each file in a given directory to see if there is a change within that time interval ? Files that are not changed during that interval will be transferred, while those that have changes will not. Can I do that with rsync ? Or another tool ? Is there a script to add this functionality to Rsync ? Thanks

  Read the article

• How to set up virtual users in vsftpd?

  - by ares94

  I've read this tutorial: http://howto.gumph.org/content/setup-virtual-users-and-directories-in-vsftpd/ My configuration is as follow: ---vsftpd.conf--- listen=YES anonymous_enable=NO local_enable=YES virtual_use_local_privs=YES write_enable=YES connect_from_port_20=YES pam_service_name=vsftpd guest_enable=YES user_sub_token=$USER local_root=/var/www/sites/$USER chroot_local_user=YES hide_ids=YES ---/etc/pam.d/vsftpd--- auth required pam_pwdfile.so pwdfile /etc/vsftpd/passwd account required pam_permit.so I created file /etc/vsftpd/passwd and added users using htaccess. I tried to login but it didn't work: ftp 127.0.0.1 Connected to 127.0.0.1 (127.0.0.1). 220 vsFTPd 2.3.5+ (ext.1) ready... Name (127.0.0.1:root): user1 331 Please specify the password. Password: 530 Permission denied. Login failed. Everything seems fine accept the permission denied thing. How can I fix this?

  Read the article

• Allowing access to MPD from local network

  - by August Karlstrom

  I have successfully installed MPD (Music Player Daemon) on my desktop computer. Everything works fine when the client runs on the same machine as the server. Now I would like to access MPD from my laptop computer which is connected (wirelessly) to the local network. In order to allow access to MPD from any computer on the local network I have added this line to /etc/hosts.allow: mpd: .local and restarted MPD. Still I get the message "error: Connection refused" when I try to access MPD with MPC (Music Player Client) from my laptop. Any clues or troubleshooting hints?

  Read the article

• pptp VPN, routing

  - by Adrian

  Details: eth0 = current internet port pptp1 = VPN connection, if I connect to my provider, he give me an IP address, which is accessible from the internet. This is what I need. I want to connect through this IP back to my PC. I want to keep my primary internet connection (eth0) on my PC for all traffic, but route traffic to VPN for specified application/or port, to access application/port from the IP, which I given from the pptp provider. Huhh? Difficult but, it is possible? If yes, how? Incoming port will be always: 33340 Outgoing port can be change, but usually it is 33330

  Read the article

• Wi-Fi Stick with ZD1211 chip refuses to work on Ubuntu >8.10. No clue.

  - by Benjamin Maus

  I have a machine running Ubuntu 9.10 (Karmic *x86_64*). Everything is running smooth so far, except for the Wi-Fi USB Stick. The same device worked perfectly in 8.10. The wireless device is a GW-US54GXS using the Zydas Zd1211 chipset. Dmesg output after plugging in: [ 196.303436] phy0: Selected rate control algorithm 'minstrel' [ 196.304209] zd1211rw 2-1:1.0: phy0 [ 196.304227] usbcore: registered new interface driver zd1211rw [ 196.334137] usb 2-1: firmware: requesting zd1211/zd1211b_ub [ 196.357463] usb 2-1: firmware: requesting zd1211/zd1211b_uphr [ 196.402643] zd1211rw 2-1:1.0: firmware version 4725 [ 196.442611] zd1211rw 2-1:1.0: zd1211b chip 2019:5303 v4810 high 00-90-cc AL2230_RF pa0 ---N- [ 196.463814] usb 2-1: firmware: requesting zd1211/zd1211b_ub [ 196.466823] usb 2-1: firmware: requesting zd1211/zd1211b_uphr Syslog output: Nov 5 11:20:24 somesystem kernel: [ 196.303436] phy0: Selected rate control algorithm 'minstrel' Nov 5 11:20:24 kierkegaard NetworkManager: <info> Found radio killswitch rfkill0 (at /sys/devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/ieee80211/phy0/rfkill0) (driver <unknown>) Nov 5 11:20:24 somesystem kernel: [ 196.304209] zd1211rw 2-1:1.0: phy0 Nov 5 11:20:24 somesystem kernel: [ 196.304227] usbcore: registered new interface driver zd1211rw Nov 5 11:20:24 somesystem NetworkManager: SCPlugin-Ifupdown: devices added (path: /sys/devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/net/wmaster0, iface: wmaster0) Nov 5 11:20:24 somesystem NetworkManager: SCPlugin-Ifupdown: device added (path: /sys/devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/net/wmaster0, iface: wmaster0): no ifupdown configuration found. Nov 5 11:20:24 somesystem NetworkManager: SCPlugin-Ifupdown: devices added (path: /sys/devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/net/wlan0, iface: wlan0) Nov 5 11:20:24 somesystem NetworkManager: SCPlugin-Ifupdown: device added (path: /sys/devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/net/wlan0, iface: wlan0): no ifupdown configuration found. Nov 5 11:20:24 somesystem NetworkManager: <info> (wlan0): driver supports SSID scans (scan_capa 0x01). Nov 5 11:20:24 somesystem NetworkManager: <info> (wlan0): new 802.11 WiFi device (driver: 'zd1211rw') Nov 5 11:20:24 somesystem NetworkManager: <info> (wlan0): exported as /org/freedesktop/NetworkManager/Devices/2 Nov 5 11:20:24 somesystem NetworkManager: <info> (wlan0): now managed Nov 5 11:20:24 somesystem NetworkManager: <info> (wlan0): device state change: 1 -> 2 (reason 2) Nov 5 11:20:24 somesystem NetworkManager: <info> (wlan0): bringing up device. Nov 5 11:20:24 somesystem kernel: [ 196.334137] usb 2-1: firmware: requesting zd1211/zd1211b_ub Nov 5 11:20:24 somesystem kernel: [ 196.357463] usb 2-1: firmware: requesting zd1211/zd1211b_uphr Nov 5 11:20:24 somesystem kernel: [ 196.402643] zd1211rw 2-1:1.0: firmware version 4725 Nov 5 11:20:24 somesystem kernel: [ 196.442611] zd1211rw 2-1:1.0: zd1211b chip 2019:5303 v4810 high 00-90-cc AL2230_RF pa0 ---N- Nov 5 11:20:24 somesystem NetworkManager: <WARN> nm_device_hw_bring_up(): (wlan0): device not up after timeout! Nov 5 11:20:24 somesystem NetworkManager: <info> (wlan0): deactivating device (reason: 2). Nov 5 11:20:24 somesystem kernel: [ 196.463814] usb 2-1: firmware: requesting zd1211/zd1211b_ub Nov 5 11:20:24 somesystem kernel: [ 196.466823] usb 2-1: firmware: requesting zd1211/zd1211b_uphr Nov 5 11:20:29 somesystem wpa_supplicant[978]: Could not set interface 'wlan0' UP Nov 5 11:20:29 somesystem wpa_supplicant[978]: Failed to initialize driver interface Nov 5 11:20:29 somesystem NetworkManager: <WARN> nm_supplicant_interface_add_cb(): Unexpected supplicant error getting interface: wpa_supplicant couldn't grab this interface. Gnome tells me in the network menu that the device was "not ready". It appears in iwconfig but not in ifconfig. The same symptoms appear when I boot from the live CD. How can I solve this dilemma?

  Read the article

• LPR command won't recognize CUPS printer

  - by Datapimp23

  I have a cups server with one shared printer configured on it. It prints test pages without problems. printername (Idle, Accepting Jobs, Shared) Description: desc Location: Driver: Zebra ZPL Label Printer (grayscale, 2-sided printing) Connection: socket://172.20.50.26 Defaults: job-sheets=none, none media=oe_w288h432_4x6in sides=one-sided This is the output from lpstat -t. it shows that the printer is idle and accepting requests admin@SERVER:~$ lpstat -t scheduler is running no system default destination device for printername: socket://172.20.50.26 printername accepting requests since Thu 26 Jan 2012 01:29:35 PM CET printer printername is idle. enabled since Thu 26 Jan 2012 01:29:35 PM CET Now when I want to send a printjob to it via an LPR command it won't recognize the printer /usr/bin/lpr -P printername test.pdf Result lpr: ttn_seg_zebra1: unknown printer What am I missing here ?

  Read the article

• Page allocation failures on iSCSI storage

  - by Dave

  We have a CentOS 6.3 iscsi server (16GB RAM) running on Infiniband bus (ipoib). When the load is high I can see multiple errors: Sep 3 23:22:20 stor4 kernel: tgtd: page allocation failure. order:2, mode:0x20 Sep 3 23:22:20 stor4 kernel: Pid: 3637, comm: tgtd Not tainted 2.6.32 #1 Sep 3 23:22:20 stor4 kernel: Call Trace: Sep 3 23:22:20 stor4 kernel: [] ? __alloc_pages_nodemask+0x77f/0x940 Sep 3 23:22:20 stor4 kernel: [] ? kmem_getpages+0x62/0x170 Sep 3 23:22:20 stor4 kernel: [] ? fallback_alloc+0x1ba/0x270 Sep 3 23:22:20 stor4 kernel: [] ? cache_grow+0x2cf/0x320 Sep 3 23:22:20 stor4 kernel: [] ? ____cache_alloc_node+0x99/0x160 Sep 3 23:22:20 stor4 kernel: [] ? pskb_expand_head+0x64/0x270 Sep 3 23:22:20 stor4 kernel: [] ? __kmalloc+0x189/0x220 Sep 3 23:22:20 stor4 kernel: [] ? pskb_expand_head+0x64/0x270 Sep 3 23:22:20 stor4 kernel: [] ? __pskb_pull_tail+0x2aa/0x360 Sep 3 23:22:20 stor4 kernel: [] ? tcp_init_tso_segs+0x37/0x50 Sep 3 23:22:20 stor4 kernel: [] ? dev_queue_xmit+0x4bb/0x6f0 Sep 3 23:22:20 stor4 kernel: [] ? neigh_connected_output+0xbd/0x100 Sep 3 23:22:20 stor4 kernel: [] ? ip_finish_output+0x237/0x310 Sep 3 23:22:20 stor4 kernel: [] ? ip_output+0xb8/0xc0 Sep 3 23:22:20 stor4 kernel: [] ? __ip_local_out+0x9f/0xb0 Sep 3 23:22:20 stor4 kernel: [] ? ip_local_out+0x25/0x30 Sep 3 23:22:20 stor4 kernel: [] ? ip_queue_xmit+0x190/0x420 Sep 3 23:22:20 stor4 kernel: [] ? sock_aio_write+0x167/0x180 Sep 3 23:22:20 stor4 kernel: [] ? tcp_transmit_skb+0x3fe/0x7b0 Sep 3 23:22:20 stor4 kernel: [] ? tcp_write_xmit+0x1fb/0xa20 Sep 3 23:22:20 stor4 kernel: [] ? __tcp_push_pending_frames+0x30/0xe0 Sep 3 23:22:20 stor4 kernel: [] ? tcp_push_pending_frames+0x33/0x40 Sep 3 23:22:20 stor4 kernel: [] ? do_tcp_setsockopt+0x3d6/0x480 Sep 3 23:22:20 stor4 kernel: [] ? tcp_setsockopt+0x2a/0x30 Sep 3 23:22:20 stor4 kernel: [] ? sock_common_setsockopt+0x14/0x20 Sep 3 23:22:20 stor4 kernel: [] ? sys_setsockopt+0x7f/0xe0 Sep 3 23:22:20 stor4 kernel: [] ? system_call_fastpath+0x16/0x1b Sep 3 23:22:20 stor4 kernel: Mem-Info: Sep 3 23:22:20 stor4 kernel: Node 0 DMA per-cpu: Sep 3 23:22:20 stor4 kernel: CPU 0: hi: 0, btch: 1 usd: 0 Sep 3 23:22:20 stor4 kernel: CPU 1: hi: 0, btch: 1 usd: 0 Sep 3 23:22:20 stor4 kernel: CPU 2: hi: 0, btch: 1 usd: 0 Sep 3 23:22:20 stor4 kernel: CPU 3: hi: 0, btch: 1 usd: 0 Sep 3 23:22:20 stor4 kernel: Node 0 DMA32 per-cpu: Sep 3 23:22:20 stor4 kernel: CPU 0: hi: 186, btch: 31 usd: 183 Sep 3 23:22:20 stor4 kernel: CPU 1: hi: 186, btch: 31 usd: 23 Sep 3 23:22:20 stor4 kernel: CPU 2: hi: 186, btch: 31 usd: 183 Sep 3 23:22:20 stor4 kernel: CPU 3: hi: 186, btch: 31 usd: 181 Sep 3 23:22:20 stor4 kernel: Node 0 Normal per-cpu: Sep 3 23:22:20 stor4 kernel: CPU 0: hi: 186, btch: 31 usd: 171 Sep 3 23:22:20 stor4 kernel: CPU 1: hi: 186, btch: 31 usd: 29 Sep 3 23:22:20 stor4 kernel: CPU 2: hi: 186, btch: 31 usd: 32 Sep 3 23:22:20 stor4 kernel: CPU 3: hi: 186, btch: 31 usd: 32 Sep 3 23:22:20 stor4 kernel: active_anon:1875 inactive_anon:2473 isolated_anon:0 Sep 3 23:22:20 stor4 kernel: active_file:1243637 inactive_file:2505055 isolated_file:0 Sep 3 23:22:20 stor4 kernel: unevictable:0 dirty:268338 writeback:0 unstable:0 Sep 3 23:22:20 stor4 kernel: free:86050 slab_reclaimable:132377 slab_unreclaimable:23744 Sep 3 23:22:20 stor4 kernel: mapped:1293 shmem:222 pagetables:720 bounce:0 Sep 3 23:22:20 stor4 kernel: Node 0 DMA free:15732kB min:124kB low:152kB high:184kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15332kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? yes Sep 3 23:22:20 stor4 kernel: lowmem_reserve[]: 0 2172 16060 16060 Sep 3 23:22:20 stor4 kernel: Node 0 DMA32 free:107544kB min:18268kB low:22832kB high:27400kB active_anon:468kB inactive_anon:2364kB active_file:566208kB inactive_file:976112kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:2224900kB mlocked:0kB dirty:96816kB writeback:0kB mapped:908kB shmem:12kB slab_reclaimable:176940kB slab_unreclaimable:968kB kernel_stack:64kB pagetables:192kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no Sep 3 23:22:20 stor4 kernel: lowmem_reserve[]: 0 0 13887 13887 Sep 3 23:22:20 stor4 kernel: Node 0 Normal free:220924kB min:116772kB low:145964kB high:175156kB active_anon:7032kB inactive_anon:7528kB active_file:4408340kB inactive_file:9044108kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:14220800kB mlocked:0kB dirty:976536kB writeback:0kB mapped:4264kB shmem:876kB slab_reclaimable:352568kB slab_unreclaimable:94008kB kernel_stack:2048kB pagetables:2688kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no Sep 3 23:22:20 stor4 kernel: lowmem_reserve[]: 0 0 0 0 Sep 3 23:22:20 stor4 kernel: Node 0 DMA: 1*4kB 0*8kB 1*16kB 1*32kB 1*64kB 0*128kB 1*256kB 0*512kB 1*1024kB 1*2048kB 3*4096kB = 15732kB Sep 3 23:22:20 stor4 kernel: Node 0 DMA32: 16305*4kB 4381*8kB 353*16kB 8*32kB 1*64kB 1*128kB 0*256kB 1*512kB 1*1024kB 0*2048kB 0*4096kB = 107900kB Sep 3 23:22:20 stor4 kernel: Node 0 Normal: 14548*4kB 14808*8kB 2420*16kB 31*32kB 5*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 1*4096kB = 220784kB Sep 3 23:22:20 stor4 kernel: 3748822 total pagecache pages Sep 3 23:22:20 stor4 kernel: 0 pages in swap cache Sep 3 23:22:20 stor4 kernel: Swap cache stats: add 0, delete 0, find 0/0 Sep 3 23:22:20 stor4 kernel: Free swap = 975864kB Sep 3 23:22:20 stor4 kernel: Total swap = 975864kB Sep 3 23:22:20 stor4 kernel: 4194303 pages RAM Sep 3 23:22:20 stor4 kernel: 126915 pages reserved Sep 3 23:22:20 stor4 kernel: 3753534 pages shared Sep 3 23:22:20 stor4 kernel: 213500 pages non-shared TCP stack and VM config: net.core.rmem_max = 83886080 net.core.wmem_max = 83886080 net.core.rmem_default = 65536 net.core.wmem_default = 65536 net.ipv4.tcp_rmem = 40960 1048560 4194304 net.ipv4.tcp_wmem = 40960 196608 4194304 net.ipv4.tcp_mem = 16388608 16388608 16388608 vm.min_free_kbytes=135168 Additional tweaks: /sbin/blockdev --setra 16384 /dev/sdb echo 2048 /sys/block/sdb/queue/nr_requests Where might the problem be? Thank you.

  Read the article

• Bash: Quotes getting stripped when a command is passed as argument to a function

  - by Shoaibi

  I am trying to implement a dry run kind of mechanism for my script and facing the issue of quotes getting stripped off when a command is passed as an argument to a function and resulting in unexpected behavior. dry_run () { echo "$@" #printf '%q ' "$@" if [ "$DRY_RUN" ]; then return 0 fi "$@" } email_admin() { echo " Emailing admin" dry_run su - $target_username -c "cd $GIT_WORK_TREE && git log -1 -p|mail -s '$mail_subject' $admin_email" echo " Emailed" } Output is: su - webuser1 -c cd /home/webuser1/public_html && git log -1 -p|mail -s 'Git deployment on webuser1' [email protected] Expected: su - webuser1 -c "cd /home/webuser1/public_html && git log -1 -p|mail -s 'Git deployment on webuser1' [email protected]" With printf enabled instead of echo: su - webuser1 -c cd\ /home/webuser1/public_html\ \&\&\ git\ log\ -1\ -p\|mail\ -s\ \'Git\ deployment\ on\ webuser1\'\ [email protected] Result: su: invalid option -- 1 That shouldn't be the case if quotes remained where they were inserted. I have also tried using "eval", not much difference. If i remove the dry_run call in email_admin and then run script, it work great.

  Read the article

• Can the expect utility handle a case where the process it spawns also spawns a sub process?

  - by davidparks21

  I'm trying to use expect to handle rsync over an ssh shell, but it gets stuck. If I run my rsync command it works (simplified here): It prompts me for my password and copies files to the server: rsync -e ssh -<other_params> If I then enclose that in expect: expect -d -c "spawn rsync -e ssh -<other_params>" -c "expect password:" -c "send mypass\r" It does not execute properly, the program exists and no files are copied. Even the debug mode isn't giving many clues. My best guess is that rsync is spawning the ssh process, and the ssh process is what needs to be interacted with, but send is picking up the rsync process id and sending the input there. Any thoughts?

  Read the article

• How can I enforce directory space limits in a OpenVPZ system?

  - by George

  The title says it all. I have some programs on a server (centos4-openvz) that use a directory as temp directory - but pay no attention to the size it grows. I want to enforcee a limit, like this folder cannot exceed 300mb. I would use quota but OpenVZ does not support loop devices to mount a file as such. Any other solutions? (apart from scripting a periodic delete of files in the directory). Editing the application's code to implement such a functionality is not entirely out of the question - if it can be done easily and no other ways exist.. Its written in cpp - but I don't know how to implement it.

  Read the article

< Previous Page | 398 399 400 401 402 403 404 405 406 407 408 409  | Next Page >