[linux-cifs-client] Possible problems with lots of cifs mount

[Hari Sekhon]

brendan powers wrote:
> I am having odd issues with cifs mounts on some linux terminal
> servers. There are 60+ cifs mounts on each server. 3 Mounts for each
> user. One for a public drive(read only), andother for there home
> folder(rw), and one for the local media on there thin client(rw). All
> the public and home folder mounts go to the same server, but there
> credentials are different for each mount. The problem is that
> sometimes, one of these mounts will cause any process that accesses it
> to become unresponsive and use as much cpu as possible. Its not
> deadlocked, because the process is running.
>
> I'm not sure what causes this problem. Is seems to regulalry happen
> during the day, but i can't always reproduce the problem. I think the
> problem may be cause by some sort of threading issue in the cifs
> kernel module.
>
> Does anyone have any ideas about this issue?
>
> My Enviroment
> mount.cifs version 1.6
> OS Debian sarge 3.1
> Kervernel versions tested 2.6.16.7, 2.6.17.11
> Server for public folders and home directories Windows Server 2003
> Server for thin client media shares .0.21a-Debian
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>

I have been finding cifs to be extremely buggy, but reverting back to 
smbfs usually works fine, have you tried using smbfs instead of cifs and 
seeing if the problem persists? In fact for a network backup script 
using cifs, I had to write error catching for quite a lot of different 
errors that occurred and falling back to smbfs worked every time by 
using replacing "mount -t cifs" with"mount -t smbfs".


Hari Sekhon