Re: panic: ffs_valloc: dup alloc

[KAMADA Ken'ichi <kamada%nanohz.org@localhost>]

At Tue, 12 Oct 2010 11:34:03 -0500, David Young wrote:
> On Tue, Oct 05, 2010 at 04:23:39PM -0500, KAMADA Ken'ichi wrote:
> > At Fri, 19 Mar 2010 17:51:46 -0500, myself wrote:
> > > 
> > > I'm seeing a panic: ffs_valloc: dup alloc.
> > > Does anyone have a similar panic?
> > > 
> > > The kernel is -current from March 15.
> > > I cannot repeat the panic reliably, but it seems to occur after
> > > suspend/resume (immediately or several minutes later).
> > > The panic occured in /home, which is a ffs on cgd on wd.
> > > "fsck -f" does not report any error on it.
> > 
> > I finally found a clue for this problem.
> > With the attached patch [1], my system seems to be stable again.
> 
> That patch will break some things.  Try this patch, instead?

Yes, I was testing a similar patch to yours (skip calling wdstart()
when !device_is_active()) after my previous email.  It did not crash
so far.  I'm now running with your patch and will be back in a
week or so.  It will take some time because the panic tends to occur
after an overnight sleep rather than a short nap.

-- 
KAMADA Ken'ichi <kamada%nanohz.org@localhost>