Re: Panic in ZFS: solaris assert: dn->dn_datablkshift != 0

From: Jeremie Le Hen <jlh_at_FreeBSD.org>
Date: Sun, 8 Sep 2013 23:14:44 +0200
On Sun, Sep 08, 2013 at 10:05:55PM +0100, Steven Hartland wrote:
> > On Sun, Sep 08, 2013 at 09:02:48PM +0100, Steven Hartland wrote:
> >> > On Sun, Sep 08, 2013 at 03:17:09PM +0100, Steven Hartland wrote:
> >> >> I believe this was added by this change set:-
> >> >> http://svnweb.freebsd.org/base?view=revision&revision=253821
> >> >> 
> >> >> Might want to try back out that change and see if everything
> >> >> works after that?
> >> > 
> >> > Actually, I already rolled back my kernel to August 1st:
> >> > 
> >> > # svn info .
> >> > Path: .
> >> > Working Copy Root Path: /usr/src
> >> > URL: http://svn0.us-west.freebsd.org/base/head/sys
> >> > Repository Root: http://svn0.us-west.freebsd.org/base
> >> > Repository UUID: ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
> >> > Revision: 253847
> >> > Node Kind: directory
> >> > Schedule: normal
> >> > Last Changed Author: ian
> >> > Last Changed Rev: 253847
> >> > Last Changed Date: 2013-07-31 21:14:00 +0200 (Wed, 31 Jul 2013)
> >> > 
> >> > 
> >> > And the problem seems to have gone away.  I could perform a full zfs
> >> > send/receive whereas it would trigger a panic 100% of the time with a
> >> > recent kernel.
> >> 
> >> I still think r253821 is the cause the reason being is prior to r253996
> >> ASSERTS in ZFS where not actually active in HEAD.
> >> 
> >> So if you could roll forward but then backout r253821 and confirm this
> >> is indeed the cause that would be a good starting point.
> >> 
> >> If this is indeed the cause be worth engaging Matthew Ahrens cc'ed to
> >> find out the reasoning behind the new ASSERT why you may be hitting it?
> > 
> > 
> 
> Errm, was there meant to be some content in your reply Jeremie, as it seems
> to be missing?

Indeed, probably a bad key combo in vi :).

I'm reverting r253821 and r254753 (the second one was supposingly fixing
the first one) and recompiling my kernel.

I will let you know.

-- 
Jeremie Le Hen

Scientists say the world is made up of Protons, Neutrons and Electrons.
They forgot to mention Morons.
Received on Sun Sep 08 2013 - 19:14:47 UTC

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