I never was able to strace or delve too much into the debug logs when we were having problems, since about 100 developers were yelling at me any time it crashed. The symptoms though were identical: no new connections could be made, tons of smbd processes stacking up which wouldn't die except by kill -9, and lots of stale locks listed with smbstatus. About the only thing I had time to do while I was compiling 2.2.12 was to stop the master smbd process, kill -9 the rest, remove the tdb files, and restart. Hopefully I'll get a chance to do some more thorough testing with RHEL4 before it goes production.
I'm running the IBM/Rational recommended samba settings, which also shuts off oplocks. -------------------------------------------- Brian Pickering System Administrator - Information Services Schweitzer Engineering Laboratories, Inc. Email - [EMAIL PROTECTED] Telephone - 509-332-1890 x1212 Matt Johnson <[EMAIL PROTECTED]> 12/08/2005 11:58 AM To [EMAIL PROTECTED] cc samba@lists.samba.org Subject Re: [Samba] Hanging SMBD processes - Samba CRASHING On Thu, 8 Dec 2005, [EMAIL PROTECTED] 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. Turning off oplocks seems to have helped, but we'd also like to get to the bottom of this... is this fcntl/locking hang behavior what you are seeing too? Matt -- ====================================================================== Matt Johnson <[EMAIL PROTECTED]> (020) 7594 8440 / x48440 Systems Programmer, Computing Support Group Office: Huxley 225 Department of Computing, Imperial College London ====================================================================== ---------------------------------- This e-mail may contain SEL confidential or legally privileged information. The opinions expressed are not necessarily those of SEL. Any unauthorized disclosure, distribution or other use is prohibited. If you received this e-mail in error, please notify the sender, permanently delete it, and destroy any printed copies.
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