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Date:	Mon, 24 Aug 2015 15:14:06 +0200
From:	Sander Smeenk <ssmeenk@...shdot.net>
To:	linux-ext4@...r.kernel.org
Subject: Re: ext4 metadata corruption bug bites again

Quoting Sander Smeenk (ssmeenk@...shdot.net):

> | [000d00h01m43s] EXT4-fs error (device vdb): ext4_mb_generate_buddy:757:
> |   group 79842, block bitmap and bg descriptor inconsistent: 10073 vs 10071
> |   free clusters
> | [000d00h01m43s] Aborting journal on device vdb-8.

Today it went again:

[000d05h26m50s] EXT4-fs error (device vdb): ext4_mb_generate_buddy:757: group 45706, block bitmap and bg descriptor inconsistent: 1769 vs 1768 free clusters
[000d05h26m50s] Aborting journal on device vdb-8.
[000d05h26m50s] EXT4-fs (vdb): Remounting filesystem read-only
[000d05h16m42s] EXT4-fs (vdb): pa ffff88003527fc30: logic 331144, phys.  1363269705, len 511
[000d05h16m42s] EXT4-fs error (device vdb): ext4_mb_release_inode_pa:3772: group 41603, free 511, pa_free 507
[000d05h16m42s] EXT4-fs (vdb): pa ffff88002ed668f0: logic 286160, phys.  1362907136, len 511
[000d05h16m42s] EXT4-fs error (device vdb): ext4_mb_release_inode_pa:3772: group 41592, free 511, pa_free 503

I'm now running 3.19.8-ckt4 with WARN_ON(1); inserted in the above
mentioned error situations.

-Sndr.
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