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Re: [BUG] pvmove corrupting XFS filesystems (was Re: [BUG] Internal erro

To: Dave Chinner <david@xxxxxxxxxxxxx>
Subject: Re: [BUG] pvmove corrupting XFS filesystems (was Re: [BUG] Internal error xfs_dir2_data_reada_verify)
From: Matteo Frigo <athena@xxxxxxxx>
Date: Tue, 26 Feb 2013 06:29:58 -0500
Cc: xfs@xxxxxxxxxxx, dm-devel@xxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <20130226044039.GM5551@dastard> (Dave Chinner's message of "Tue, 26 Feb 2013 15:40:39 +1100")
References: <87d2vnc34r.fsf@xxxxxxxx> <20130226044039.GM5551@dastard>
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.1 (gnu/linux)
Dave Chinner <david@xxxxxxxxxxxxx> writes:

> All of the evidence points of a problem caused by the pvmove
> operation. I'd suggest that you don't use it until we get to the
> bottom of the problem (i.e. where the EAGAIN is coming from and
> why)....


thanks for your quick reply and detailed analysis.

For the benefit of other readers, I wish to add that the same problem
occurs when creating lvm mirrors (e.g. "lvconvert -m1 vg/lvol"), which
is not surprising since pvmove works itself by creating a mirror.
Consequently, mirror creation should also be avoided until the root
cause of the problem is eliminated.


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