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Date:      Sun, 30 Nov 2008 01:00:59 +0100
From:      Pawel Jakub Dawidek <pjd@FreeBSD.org>
To:        Pete French <petefrench@ticketswitch.com>
Cc:        freebsd-stable@freebsd.org
Subject:   Re: Curious failure of ZFS snapshots
Message-ID:  <20081130000059.GC1494@garage.freebsd.pl>
In-Reply-To: <E1L6PRm-000JlR-R4@dilbert.ticketswitch.com>
References:  <20081129104640.GB1494@garage.freebsd.pl> <E1L6PRm-000JlR-R4@dilbert.ticketswitch.com>

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On Sat, Nov 29, 2008 at 01:01:18PM +0000, Pete French wrote:
> > Is there a way for me to reproduce that?
>=20
> I am not sure how to reproduce it, as I am unclear as to what
> causes is. I have two machines making regular snapshots, one of which
> ends up in this state, and one which doesnt. The only difference is
> that the one which goes wwrong is actually trying to access the snapshots,
> whereas the other is a backup machine where they just sit there.
>=20
> What I can try and do is to setup a small system to try and reproduce the
> bug on a small file backed zfs system, aandd then maybe email you the
> failed image if I can get it to fail. Would that be of any use ?
> The current failed image is about 50GB, so I dont have an easy way to
> send you that. Is an image of a filesystem with the problem actualll of
> any use to you anywway ?

It's not file system on-disk structure fault, as far as I understand,
because reboot fixes it. I belive it's how you access the snapshots.

--=20
Pawel Jakub Dawidek                       http://www.wheel.pl
pjd@FreeBSD.org                           http://www.FreeBSD.org
FreeBSD committer                         Am I Evil? Yes, I Am!

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