Re: Ufs dead-locks on freebsd 6.2
- From: Kris Kennaway <kris@xxxxxxxxxxxxxx>
- Date: Wed, 16 May 2007 12:33:05 -0400
On Wed, May 16, 2007 at 12:08:24PM -0400, Andrew Edwards wrote:
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
Probably not relevant then. Deadlocks come in many varieties, all
different.
Currently I'm running with debug.mpsafevfs=0, debug.mpsafenet=1and
debug.mpsafevm=0 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?
See the chapter on kernel debugging in the developers handbook for the
information you need to provide before we can begin to debug your
problem.
Kris
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