[linux-cifs-client] Errors popping up under heavy load

Michael Muratet mmuratet at hudsonalpha.org
Tue Feb 24 12:17:48 GMT 2009


Greetings

I have Promise 48TB RAID system connected to MacPro and CIFS mounted  
to a Dell 1950 8-core running RedHat Enterprise 3. I was not so much  
worried about security, but it did seem to perform better than NFS,  
for instance. It has worked well up until now. We recently had to  
migrate some large apps from the Mac to the linux box because a vendor  
no longer supports the Mac which puts a lot of traffic through the  
mount. Yesterday we starting seeing errors:

Feb 23 09:25:59 srv-cf1 kernel:  CIFS VFS: No response to cmd 46 mid  
62979
Feb 23 09:25:59 srv-cf1 kernel:  CIFS VFS: No response to cmd 46 mid  
62980
Feb 23 09:25:59 srv-cf1 kernel:  CIFS VFS: Send error in read = -11
Feb 23 09:25:59 srv-cf1 kernel:  CIFS VFS: Send error in read = -11
Feb 23 09:25:59 srv-cf1 kernel:  CIFS VFS: No response to cmd 47 mid  
62978
Feb 23 09:25:59 srv-cf1 kernel:  CIFS VFS: No response to cmd 47 mid  
62977
Feb 23 09:25:59 srv-cf1 kernel:  CIFS VFS: No response to cmd 47 mid  
62976
Feb 23 09:25:59 srv-cf1 kernel:  CIFS VFS: No response to cmd 47 mid  
62975
Feb 23 09:25:59 srv-cf1 kernel:  CIFS VFS: No response to cmd 47 mid  
62974
Feb 23 09:25:59 srv-cf1 kernel:  CIFS VFS: No response to cmd 47 mid  
62973
Feb 23 09:25:59 srv-cf1 kernel:  CIFS VFS: No response to cmd 46 mid  
62972
Feb 23 09:25:59 srv-cf1 kernel:  CIFS VFS: Send error in read = -11
Feb 23 09:25:59 srv-cf1 kernel:  CIFS VFS: Send error in read = -9

Have I reached the limits of CIFS capability? I've been poking around  
the web trying to find a manual that describes these errors. Can  
someone point me to a manual or tell me what the errors mean?

Thanks

Mike


Michael Muratet, Ph.D.
HudsonAlpha Institute for Biotechnology
mmuratet at hudsonalpha.org
(256) 327-0473 (p)
(256) 327-0966 (f)

Room 4005
601 Genome Way
Huntsville, Alabama 35806






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