Unkillable and runaway processes
Pawel Jakub Dawidek
pjd at FreeBSD.org
Thu Sep 13 01:38:01 PDT 2007
On Fri, Sep 07, 2007 at 08:31:09AM +0200, Kenneth Vestergaard Schmidt wrote:
> Pawel Jakub Dawidek <pjd at FreeBSD.org> writes:
>
> > On Wed, Sep 05, 2007 at 05:25:09PM +0200, Kenneth Vestergaard Schmidt wrote:
> >> Pawel Jakub Dawidek <pjd at FreeBSD.org> writes:
> >> >> I could use some pointers on what to do - is there some way I can debug
> >> >> this better, maybe give some better info?
> >> >
> >> > Try disabling ZIL. This looks like a bug was already reported by Kris.
> >> > This was already reported to OpenSolaris.
> >>
> >> We disabled ZIL, but the bug crept up again. I've just now rebooted the
> >> machine with DDB-support, so I can get some more info, per Kris's mail.
>
> That would be Kip's mail.
>
> >> The full state of the process hanging is 'zfs:(&tx->tx_quiesce_done_cv)'
> >> - it cycles between RUN, CPUx and this one.
> >
> > Hmm, this means it didn't deadlock...
>
> Here's some debugging output. PIDs 14870, 14933 and 12458 are just
> spinning and being useless. Funnily, all three have rename() in their
> backtrace.
>
> db> ps
[...]
> 360 0 0 0 SL zfs:(&tq 0xd151877c [zil_clean]
> 359 0 0 0 SL zfs:(&tq 0xd1518848 [zil_clean]
[...]
Are you sure you disabled ZIL?
--
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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