Unexpected crash

[John-Mark Gurney]

Willem Jan Withagen wrote this message on Wed, Feb 25, 2015 at 09:54 +0100:
> On 25-2-2015 01:43, John-Mark Gurney wrote:
> > Willem Jan Withagen wrote this message on Mon, Feb 23, 2015 at 12:55 +0100:
> >> Came home last night to find out that my ZFS fileserver has rebooted....
> >>
> >> Dmesg is loaded with sonewconn messages....
> >> And after a while the system thinks it is enough...
> >> ---
> >> Panic String: deadlkres: possible deadlock detected for
> >> 0xfffff800133f9000, blocked for 1800789 ticks
> >> ----
> >
> > [...]
> >
> >> FreeBSD 10.1-STABLE #101 r276583: Sat Jan  3 06:51:10 CET 2015
> >>       root at zfs.digiware.nl:/home/obj/amd64/usr/srcs/src10/src/sys/ZFS amd64
> >> FreeBSD clang version 3.4.1 (tags/RELEASE_34/dot1-final 208032) 20140512
> >
> > Upgrade your kernel:
> > https://svnweb.freebsd.org/base?view=revision&revision=278800
> >
> > This change will probably fix your panic...
> 
> Thanx for the info. I upgraded after last Monday when I saw the crash:
> 10.1-STABLE FreeBSD 10.1-STABLE #152 r279218: Tue Feb 24 01:07:14
> So that is well beyond you revision. I have not seen the messages after 
> that.

Good to hear...

> Just out of curiosity:
> Is this in the aftermath of the big debate about the callout restructuring?

Kinda...  HPS posted a patch to fix the bug, but then rrs investigated
it and found this simplier fix which is now in the tree...  I believe
there is still ongoing discussion moving forward w/ other aspects of
it..  You should read the email archives for the full story.. I am
leaving things out, I didn't follow the thread very closely...

-- 
  John-Mark Gurney				Voice: +1 415 225 5579

     "All that I will do, has been done, All that I have, has not."