ffs snapshot lockup
kris at obsecurity.org
Wed Oct 4 16:40:36 UTC 2006
On Wed, Oct 04, 2006 at 05:08:08PM +0300, Kostik Belousov wrote:
> On Wed, Oct 04, 2006 at 09:56:54AM -0400, Vivek Khera wrote:
> > On Oct 3, 2006, at 4:43 AM, Kostik Belousov wrote:
> > >>Details are posted at http://vivek.khera.org/scratch/crashlogs/
> > >>
> > >>I have the crashdumps available to a kernel hacker upon request (i'd
> > >>rather not make them generally available to the public...)
> > >>
> > >It seems that you have snapshotted fs exported by nfsd ? At least,
> > >18a is
> > >definitely the case. I have the patch (for current) that shall fix
> > >the issue.
> > >In fact, you need two patches:
> > >
> > So last night I patched my 6.2-PRE and installed the kernel and
> > rebooted. At 03:09 I got paged that the server was not responding. It
> > had dropped into the kernel debugger on the console again. Typescript
> > 19 (posted at the above URL) is the output of the debugging commands
> > for it. These patches did not solve my problem (or maybe I have
> > multiple problems and they only solved one.)
> > The only thing I think was running at the time would be a large file
> > copy from a remote system to this one using rsync.
> As I understand, you got the panic. Then, you shall post the panic message.
> If you have core file, then running kgdb on the core may show required
> (it shall be on the console exactly before en
> and backtrace (using the bt command of ddb) of the paniced thread.
YOu can also do 'show msgbuf' from DDB.
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