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Subject: Re: [PATCH] xfs_repair: junk leaf attribute if count == 0
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From: Eric Sandeen <sandeen@sandeen.net>
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Date: Tue, 14 Mar 2017 11:54:37 -0500
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To: =?UTF-8?B?TGlib3IgS2xlcMOhxI0=?= <libor.klepac@bcom.cz>
Cc: Eric Sandeen <sandeen@redhat.com>, linux-xfs <linux-xfs@vger.kernel.org>

On 3/14/17 3:15 AM, Libor Klepáč wrote:
> Hello,
> i have this during night with error_level = 11, no force shutdown

Just to double check - are these all getting freshly created?  I.e.
you repair and fix the filesystem each time you see this, but they
keep re-appearing?

> (kernel 4.8.15)
> Mar 14 02:36:29 vps2 kernel: [54799.061956] XFS (dm-2): Metadata corruption detected at xfs_attr3_leaf_read_verify+0x5a/0x100 [xfs], xfs_attr3_leaf block 0x24e70268

Unfortunately the read path is a bit less interesting.  We found something
on disk, but we're not sure how it got there.

If we could catch a write verifier failing that /might/ be a little more
useful.

I'm at a loss as to why you seem to be uniquely able to hit this problem.  :(

-Eric