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On Tue, 2007-10-23 at 11:35 +0200, Arjan van Leeuwen wrote:
> 2007/10/19, Tim Bishop :
> >
> > On Thu, Oct 18, 2007 at 06:40:04PM +0200, Arjan van Leeuwen wrote:
> > > > are softupdates on ?
> > > >
> > > > Yes. Turning them off seems to fix the problem (fingers crossed - I

> > only
> > > > turned it off this morning, didn't have a panic yet)
> > >
> > > After working for a whole day without softupdates, I can say that

> > turning
> > > them off at least causes less panics to happen than with them turned =

on,
> > > maybe they even don't happen at all without softupdates; I haven't ha=

d a
> > > panic all day, while I have one every few hours with softupdates turn=

ed
> > on.
> >
> > I've been running for the best part of a day now with softupdates turne=

d
> > off and so far no panics. I'm running tinderbox on the host, and it
> > would quite reliably crash it before.
> >
> > Of course it's hard to say if this has fixed the problem... maybe it
> > doesn't happen as often, or maybe my data is being slowly chewed up
> > instead ;-)

>=20
> It looks like on the same system, I'm able to reliably panic zfs as well,
> under the exact same conditions (i.e. linking a particularly big piece of
> software). Maybe this is not a problem in the filesystem at all. I've not
> been able to get a coredump yet from the zfs panic.
> This is in 7.0-PRERELEASE, btw (I switched to RELENG_7 when the branching
> happened).


Is anyone who had been able to trigger this panic still having problems
with recent kernels (and soft updates turned on)? I've checked with a
few people who had been experiencing the panic and they can no longer
trigger it.

It's at least a tiny bit possible some of the VM fixes that have gone in
addressed this problem. We'd like to find out if anyone can still
trigger this.

Thanks.

--=20
Ken Smith
- From there to here, from here to | kensmith@cse.buffalo.edu
there, funny things are everywhere. |
- Theodore Geisel |


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