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Re: XFS corruption on post 3.7 tree.

To: Dave Jones <davej@xxxxxxxxxx>, Linux Kernel <linux-kernel@xxxxxxxxxxxxxxx>, Alex Elder <elder@xxxxxxxxxx>, xfs@xxxxxxxxxxx
Subject: Re: XFS corruption on post 3.7 tree.
From: Ben Myers <bpm@xxxxxxx>
Date: Thu, 13 Dec 2012 16:41:19 -0600
In-reply-to: <20121213221057.GA22049@xxxxxxxxxx>
References: <20121213205522.GA28455@xxxxxxxxxx> <20121213221057.GA22049@xxxxxxxxxx>
User-agent: Mutt/1.5.20 (2009-06-14)
Hi Dave,

On Thu, Dec 13, 2012 at 05:10:57PM -0500, Dave Jones wrote:
> On Thu, Dec 13, 2012 at 03:55:22PM -0500, Dave Jones wrote:
>  > Doing a kernel build while running on a 3.7+ tree from last night and I 
> hit this...
>  > 
>  > 
>  > [22637.787422] XFS: Internal error XFS_WANT_CORRUPTED_RETURN at line 163 
> of file fs/xfs/xfs_dir2_data.c.  Caller 0xffffffffa070086a

Looks like the dir v2 verifier found that a single block directory had a data
entry without a corresponding leaf entry in the block.

> I unmounted, remounted, unmounted, and then ran xfs_repair on it, as prompted.
> xfs_repair noted..
> 
> bad hash table for directory inode 201328949 (bad stale count): rebuilding

Interesting!
                                                                
> After remounting, things seemed ok again.
> I blew away my .ccache on that drive, and restarted my compile,
> and then hit the same bug again.

Suppose you could you grab a metadump before repairing it next time?  

Regards,
        Ben

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