[Samba] Hanging SMBD processes - Samba CRASHING
Matt Johnson
mwj at doc.ic.ac.uk
Tue Dec 13 16:55:07 GMT 2005
On Tue, 13 Dec 2005, Gerald (Jerry) Carter wrote:
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> On Thu, 8 Dec 2005, Matt Johnson wrote:
>
>> On Thu, 8 Dec 2005, Brian_Pickering at selinc.com wrote:
>>
>>> We've had similar troubles with Samba 3.x on our ClearCase VOB server
>>> running RHEL3. Our fix was to go back to the old 2.2.12, and we haven't
>>> had a problem since. Unfortunately I was never able to devote enough
>>> time
>>> to tracking down the problem fully. I had hoped that upgrading to RHEL4
>>> using a 2.6 kernel would help, but your experience doesn't bode well for
>>> that.
>>
>> We had similar problems. stracing hung child smbd processes pointed the
>> finger at *local* locking issues: processes were hanging in
>> fcntl(...,F_SETLKW64,...) for one byte locks on fd 14 = locking.tdb; the
>> culprit function is tdb_brlock.
>
> What is the local filesystem? And remind me what server OS this.
> RHEL 4 ? Thanks.
Same problem on both ext3 and xfs. This is running on Mandrake 10.2
(Mandriva Linux 2005 LE), with a 2.6.13 kernel.
Since turning off oplocks things have become *much* more stable, if
rather slow.
--
======================================================================
Matt Johnson <mwj at doc.ic.ac.uk> (020) 7594 8440 / x48440
Systems Programmer, Computing Support Group Office: Huxley 225
Department of Computing, Imperial College London
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