Date: Wed, 16 May 2007 12:08:24 -0400 From: "Andrew Edwards" <aedwards@sandvine.com> To: <freebsd-performance@freebsd.org> Subject: Ufs dead-locks on freebsd 6.2 Message-ID: <5230D3C40B842D4F9FB3CD368021BEF72F08F1@exchange-2.sandvine.com>
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I have a system running a dual intel zeon 2.8Ghz with 4G of ram and using an intel raid controller model SRCU42X which uses the amr driver. I have had this server running 5.4 upgraded to 6.2 and was running fine for several months and then after a normal reboot I've started having all sorts of problems with what appears to be dead-locks in the filesystem. This server is my backup server and I rsync files from various servers onto this one fairly non-stop. If I stop the rsync's the system appears to be stable although I did have a kernel core just last night. When I have been able to observe the problem I ususally see one filesystem become inaccessible, perhaps var but I'm not sure, and then in a short period of time the whole system is inaccessible. Usually if I startup just one of the rsync's within a couple of hours the system will be un-usable. I did find this thread which seems to describe similar issues but this is a different driver. http://lists.freebsd.org/pipermail/freebsd-questions/2006-August/127835. html Currently I'm running with debug.mpsafevfs=3D0, debug.mpsafenet=3D1and debug.mpsafevm=3D0 but this doesn't seem to help. On perahps a related issue I have two other nearly identical systems which were going to be upgrading to 6.2 as on 5.4 I am experiencing deadlocks and when I hit ctrl-t I see the system is either stuck in ufs or zoneinfo and I have not found very much information about zoneinfo. Does anyone have any suggestions on what I can look for or other tuning options or had similar experiences?
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