linux-ext4 - Re: Failure of resize2fs past 4TB

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Message-ID: <5153BFA5.9090404@redhat.com>
Date:	Wed, 27 Mar 2013 22:57:25 -0500
From:	Eric Sandeen <sandeen@...hat.com>
To:	John Jolly <john.jolly@...il.com>
CC:	linux-ext4@...r.kernel.org
Subject: Re: Failure of resize2fs past 4TB

On 3/27/13 10:44 PM, John Jolly wrote:
> All,
> 
> I recently had a major data loss when expanding an LVM logical volume
> past 2TB in size. I have preserved the 2.25TB just in case I might be
> able to recover some data. But this backup is not my reason for
> writing.
> 
> I have done several tests and these are the results. First the error
> condition, where I create a 1GB file system, expand the volume to 2TB,
> resize the file system and have it become corrupted:

I checked the recent code in the master & pu branches of git, and the
same problem persists.

...


> I know it is unusual to start so small and expand like this, but I
> doubt I am the only one to have experienced this. How could I have
> prepared my small 1GB file system so that it would be able to handle
> an expansion past 2TB? Any help would be appreciated.

not sure; you haven't done anything wrong, this simply looks like
a resize bug, of which there have been a few lately I'm afraid.

-Eric
 
> Regards,
> --
> John Jolly - john.jolly@...il.com - http://john.jolly.name
> --
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