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From: Dave Chinner <david@fromorbit.com>
To: "Libor Klepáč" <libor.klepac@bcom.cz>
Cc: Brian Foster <bfoster@redhat.com>, linux-xfs@vger.kernel.org
Subject: Re: BUG: Metadata corruption detected at xfs_attr3_leaf_read_verify
Date: Thu, 10 Nov 2016 16:29:15 +1100	[thread overview]
Message-ID: <20161110052915.GG28922@dastard> (raw)
In-Reply-To: <2639114.hBi4OJ80y2@libor-nb>

On Tue, Nov 08, 2016 at 12:28:54PM +0100, Libor Klepáč wrote:
> Adding more output from dmesg
> 
>  XFS (dm-2): Metadata corruption detected at xfs_attr3_leaf_read_verify+0x5a/0x100 [xfs], xfs_attr3_leaf block 0x12f63f40
>  XFS (dm-2): Unmount and run xfs_repair
>  XFS (dm-2): First 64 bytes of corrupted metadata buffer:
>  ffff88018fe02000: 00 00 00 00 00 00 00 00 fb ee 00 00 00 00 00 00  ................
>  ffff88018fe02010: 10 00 00 00 00 20 0f e0 00 00 00 00 00 00 00 00  ..... ..........
>  ffff88018fe02020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
>  ffff88018fe02030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
>  XFS (dm-2): metadata I/O error: block 0x12f63f40 ("xfs_trans_read_buf_map") error 117 numblks 8

So, again, it is empty attribute blocks that are being tripped over
at blkno 0x12f63f40 and 0x12645ef8

Which:

> > Phase 3 - for each AG...
> >         - scan (but don't clear) agi unlinked lists...
> >         - process known inodes and perform inode discovery...
> >         - agno = 0
> >         - agno = 1
> > Metadata corruption detected at xfs_attr3_leaf block 0x12645ef8/0x1000
> > Metadata corruption detected at xfs_attr3_leaf block 0x12f63f40/0x1000

These two blocks. It looks like repair didn't clean them up?

Hmmmm - looking at the code I'm not sure that repair detects and
removes empty attr leaf blocks, which would explain why the error
showed up again.. Can you provide a metadump of the filesystem so we
can did into the exact neature of the problem you are seeing?

Cheers,

Dave.
-- 
Dave Chinner
david@fromorbit.com

  reply	other threads:[~2016-11-10  5:29 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-10-21 17:09 BUG: Metadata corruption detected at xfs_attr3_leaf_read_verify Libor Klepáč
2016-10-21 17:59 ` Brian Foster
2016-10-21 22:20   ` Dave Chinner
2016-10-23  6:48   ` Libor Klepáč
2016-10-24  2:40     ` Dave Chinner
2016-10-25  6:52       ` Libor Klepáč
2016-10-31  8:54       ` Libor Klepáč
2016-10-31 11:57         ` Brian Foster
2016-10-31 12:02         ` Dave Chinner
2016-10-31 15:36           ` Libor Klepáč
2016-11-08 11:09           ` Libor Klepáč
2016-11-08 11:28             ` Libor Klepáč
2016-11-10  5:29               ` Dave Chinner [this message]
     [not found]                 ` <2152865.L3K5Xz7SXO@libor-nb>
2016-11-10 21:30                   ` Dave Chinner
2016-11-23 11:40                     ` Libor Klepáč
2016-11-26  6:05                       ` Eric Sandeen
2016-12-06  9:08                     ` Libor Klepáč
  -- strict thread matches above, loose matches on Subject: below --
2016-10-21 12:46 Libor Klepáč

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