ZFS deadlocks or panics

Pawel Jakub Dawidek pjd at FreeBSD.org
Wed Jun 27 07:02:56 UTC 2007

On Tue, Jun 26, 2007 at 03:40:38PM +0200, Jan Schmidle wrote:
> I'm trying to bild a storagebox with ZFS. Now I have some problems
> which seems to be related to ZFS. Perhaps after adding disks to an
> existing pool, all consoles trying to execute a command with I/O
> operations freezes. Only sometimes I get a panic.

Are you sure the disks are fine?

> I played around with the tuning variables, proposed in
> http://wiki.freebsd.org/ZFSTuningGuide
> but didn't help.
> The box is running -CURRENT amd64/SMP in a GENERIC configuration.
> Last cvsup and build was "Fri Jun 22"
> I also tried with i386 with and without SMP.
> I collected some Information and uploaded it to
> https://jschmidle.org/upload/
> In "panic1" you can see a whole system-bootup resulting in a Panic.
> "panic2" is just another lockup during bootup.

Backtraces would tell us if this is ZFS or not, can you include them?

> "areca" contains the information about the raid controller in use.
> in "dump", I tried to create a coredump during a lockup.
> "alltrace", "witness", "ps" also have been created during the lockup.
> "sysctl" contains the current settings.
> Can anyone recognize where the problem is coming from or is
> additional information needed?

show lockedvnods
show alllocks

Pawel Jakub Dawidek                       http://www.wheel.pl
pjd at FreeBSD.org                           http://www.FreeBSD.org
FreeBSD committer                         Am I Evil? Yes, I Am!
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