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Date:      Thu, 12 Jul 2007 06:37:37 -0500
From:      Eric Anderson <anderson@freebsd.org>
To:        Pramod Srinivasan <pramod@juniper.net>
Cc:        freebsd-fs@freebsd.org
Subject:   Re: ffs_blkfree: freeing free block
Message-ID:  <46961281.2000607@freebsd.org>
In-Reply-To: <7FA0C743C38E5340BFC2873488FA1E8E1D9453@emailcorp3.jnpr.net>
References:  <7FA0C743C38E5340BFC2873488FA1E8E1D9453@emailcorp3.jnpr.net>

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Pramod Srinivasan wrote:
> Hi Folks,
> 
> I am hitting an issue with FS mostly happens during unmount (there was
> heavy FS activity before unmount). I saw couple of open issues in the
> gnat system which resembled what I am facing, is this known issue in
> FreeBSD 6.1? Any suggestions that can help me isolate this issue?
> 
> Any help greatly appreciated.
> 
> Thanks,
> Pramod
> 
> o 2004/10/07 kern/72424  panic: ffs_blkfree: freeing free block in
> ffs/ffs_alloc.c:1750 
> o 2007/04/17 kern/111766  [panic] "panic: ffs_blkfree: freeing free
> block" during disk activity 
> 
> Logs:
> 
> bad block 1879705254, ino 134428
> pid 2753 (umount), uid 0 inumber 134428 on /mnt/var: bad block
> bad block -2044978536, ino 134428


You should do three things:

- Check your disk for errors
- fsck the partition
- Update to 6-STABLE

After doing the above, please give feedback on your findings..

Eric



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