Comments on: CIFS VFS No response for cmd n mid… http://blog.dhampir.no/content/cifs-vfs-no-response-for-cmd-n-mid Wed, 21 Dec 2011 10:10:37 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: alfanoid http://blog.dhampir.no/content/cifs-vfs-no-response-for-cmd-n-mid#comment-3065 alfanoid Fri, 11 Feb 2011 04:07:44 +0000 http://blog2.dhampir.no/?p=88#comment-3065 Well that didn't show the link did it... Here it is.. http://cweiske.de/tagebuch/Timed%20permission%20problems%20on%20CIFS.htm Well that didn’t show the link did it…

Here it is..

http://cweiske.de/tagebuch/Timed%20permission%20problems%20on%20CIFS.htm

]]> By: alfanoid http://blog.dhampir.no/content/cifs-vfs-no-response-for-cmd-n-mid#comment-3064 alfanoid Fri, 11 Feb 2011 04:06:43 +0000 http://blog2.dhampir.no/?p=88#comment-3064 We were getting this on RHEL5.5 64bit kernel: CIFS VFS: Write2 ret -13, wrote 0 -13 is Permission Denied From this site <a href="http://cweiske.de/tagebuch/Timed%20permission%20problems%20on%20CIFS.htm" title="http://cweiske.de/tagebuch/Timed%20permission%20problems%20on%20CIFS.htm" rel="nofollow"> I found that echo "0" > /proc/fs/cifs/LookupCacheEnable turned off inode caching so that when a file/directory is created on the CIFS mount its created straight away and not cached for up to a second. We were getting this on RHEL5.5 64bit

kernel: CIFS VFS: Write2 ret -13, wrote 0

-13 is Permission Denied

From this site

I found that
echo “0″ > /proc/fs/cifs/LookupCacheEnable

turned off inode caching so that when a file/directory is created on the CIFS mount its created straight away and not cached for up to a second.

]]> By: Blodge http://blog.dhampir.no/content/cifs-vfs-no-response-for-cmd-n-mid#comment-236 Blodge Wed, 20 Oct 2010 19:22:13 +0000 http://blog2.dhampir.no/?p=88#comment-236 Same as Chetan on RHEL5.5_x64. CIFS VFS: No response for cmd 114 mid 52651 CIFS VFS: Unexpected lookup error -112 CIFS VFS: No response for cmd 114 mid 52659 Repeat..CPU goes to 100% eventually and we kernel panic. Next time it works just fine. Same as Chetan on RHEL5.5_x64.

CIFS VFS: No response for cmd 114 mid 52651
CIFS VFS: Unexpected lookup error -112
CIFS VFS: No response for cmd 114 mid 52659

Repeat..CPU goes to 100% eventually and we kernel panic. Next time it works just fine.

]]> By: Chetan http://blog.dhampir.no/content/cifs-vfs-no-response-for-cmd-n-mid#comment-58 Chetan Wed, 22 Sep 2010 10:30:54 +0000 http://blog2.dhampir.no/?p=88#comment-58 Hi Tiago, Does the modeprobe comment applies to Redhat 5.5 also. We are facing the same issue(CIFS VFS: No response for cmd 50 mid 10033). And let us know if the above solution which you have provided to create a cifs.conf file will resolve the issue. Hi Tiago,

Does the modeprobe comment applies to Redhat 5.5 also. We are facing the same issue(CIFS VFS: No response for cmd 50 mid 10033). And let us know if the above solution which you have provided to create a cifs.conf file will resolve the issue.

]]> By: Tiago Neiva http://blog.dhampir.no/content/cifs-vfs-no-response-for-cmd-n-mid#comment-57 Tiago Neiva Sun, 15 Aug 2010 16:49:51 +0000 http://blog2.dhampir.no/?p=88#comment-57 For me it's still not perfect I still get "CIFS VFS: ignoring corrupt resume name" messages, but the others went away and performance went up! I'm using ubuntu 10.04 and created this file: /etc/modprobe.d/cifs.conf with this contents: # Created to fix cifs, thanks to the ubuntu forums install cifs /sbin/modprobe --ignore-install cifs && echo 0 > /proc/fs/cifs/LinuxExtensionsEnabled && echo 0 > /proc/fs/cifs/OplockEnabled remove cifs /sbin/modprobe -r cifs For me it’s still not perfect I still get
“CIFS VFS: ignoring corrupt resume name”
messages, but the others went away and performance went up!

I’m using ubuntu 10.04 and created this file:
/etc/modprobe.d/cifs.conf

with this contents:

# Created to fix cifs, thanks to the ubuntu forums
install cifs /sbin/modprobe –ignore-install cifs && echo 0 > /proc/fs/cifs/LinuxExtensionsEnabled && echo 0 > /proc/fs/cifs/OplockEnabled
remove cifs /sbin/modprobe -r cifs

]]> By: cnafa http://blog.dhampir.no/content/cifs-vfs-no-response-for-cmd-n-mid#comment-56 cnafa Mon, 19 Jul 2010 09:36:38 +0000 http://blog2.dhampir.no/?p=88#comment-56 My function use cifs protocol to transfer file and it usually occur “CIFS VFS: Send error in read = -11 ” error. I searched the cifs reference and get a ways to resovle it. http://pserver.samba.org/samba/ftp/cifs-cvs/linux-cifs-client-guide.pdf " Performance Considerations Server speed, server disk speed and network speed can constrain the overall performance of a cifs mount, but in some cases, client client configuration settings can be changed to increase performance: 1) size of file write (wsize). The Linux CIFS client usually sends 56K writes (14 pages) and is limited to 56K maximum unless mounted forcedirectio. 2) size of file read (rsize). The Linux CIFS client usually sends 16K reads (4 pages). Since CIFS large network buffers are about 16K in size by default, increasing the rsize would have little effect unless the setting of module load parameter CIFSMaxBufSize (via insmod) also is increased. " I just lower the block of data what i want to write. you can use command "modinfo cifs" to get the cifs read or write buffer size and buffersize scope. My function use cifs protocol to transfer file and it usually occur “CIFS VFS: Send error in read = -11
” error.
I searched the cifs reference and get a ways to resovle it.

http://pserver.samba.org/samba/ftp/cifs-cvs/linux-cifs-client-guide.pdf

”
Performance Considerations
Server speed, server disk speed and network speed can constrain the overall performance of a cifs
mount, but in some cases, client client configuration settings can be changed to increase performance:
1) size of file write (wsize). The Linux CIFS client usually sends 56K writes (14 pages) and is
limited to 56K maximum unless mounted forcedirectio.
2) size of file read (rsize). The Linux CIFS client usually sends 16K reads (4 pages). Since CIFS
large network buffers are about 16K in size by default, increasing the rsize would have little
effect unless the setting of module load parameter CIFSMaxBufSize (via insmod) also is
increased.
”

I just lower the block of data what i want to write.

you can use command “modinfo cifs” to get the cifs read or write buffer size and buffersize scope.

]]> By: cnafa http://blog.dhampir.no/content/cifs-vfs-no-response-for-cmd-n-mid#comment-55 cnafa Mon, 19 Jul 2010 09:31:21 +0000 http://blog2.dhampir.no/?p=88#comment-55 My function use cifs protocol to transfer file and it usually occur "CIFS VFS: Send error in read = -11 " error. I searched the cifs reference and get a ways to resovle it. http://pserver.samba.org/samba/ftp/cifs-cvs/linux-cifs-client-guide.pdf I just lower the block of data what i want to write My function use cifs protocol to transfer file and it usually occur “CIFS VFS: Send error in read = -11
” error.
I searched the cifs reference and get a ways to resovle it.

http://pserver.samba.org/samba/ftp/cifs-cvs/linux-cifs-client-guide.pdf

I just lower the block of data what i want to write

]]> By: korman http://blog.dhampir.no/content/cifs-vfs-no-response-for-cmd-n-mid#comment-54 korman Fri, 02 Jul 2010 14:03:34 +0000 http://blog2.dhampir.no/?p=88#comment-54 I should add it was "Cold booted" I should add it was “Cold booted”

]]> By: korman http://blog.dhampir.no/content/cifs-vfs-no-response-for-cmd-n-mid#comment-53 korman Fri, 02 Jul 2010 14:02:55 +0000 http://blog2.dhampir.no/?p=88#comment-53 We just put into production a RHEL5 Linux / Oracle server which uses the CIFS client to injest a number of files located on a Win2k8 Server. At 8PM I found similar errors and SAR showed %system cpu at to 99% and staying there until the server had was rebooted 2 hours later. I am guessing this post might have saved my ass.. We just put into production a RHEL5 Linux / Oracle server which uses the CIFS client to injest a number of files located on a Win2k8 Server. At 8PM I found similar errors and SAR showed %system cpu at to 99% and staying there until the server had was rebooted 2 hours later. I am guessing this post might have saved my ass..

]]> By: Bill Rebey http://blog.dhampir.no/content/cifs-vfs-no-response-for-cmd-n-mid#comment-43 Bill Rebey Fri, 30 Apr 2010 18:52:22 +0000 http://blog2.dhampir.no/?p=88#comment-43 Thanks a million for posting this! This has been a real nightmare for me ever since upgrading to 9.10 from 9.04 (the problem didn't seem to exist in 9.04). Thanks a million for posting this! This has been a real nightmare for me ever since upgrading to 9.10 from 9.04 (the problem didn’t seem to exist in 9.04).

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