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Re: Problems with xfs_grow on large LVM + XFS filesystem 20TB size check

To: Eric Sandeen <sandeen@xxxxxxxxxxx>
Subject: Re: Problems with xfs_grow on large LVM + XFS filesystem 20TB size check 2 failed
From: Mark Goodwin <markgw@xxxxxxx>
Date: Tue, 29 Apr 2008 10:38:48 +1000
Cc: Lance Reed <lreed@xxxxxxxxxxxxxx>, "xfs@xxxxxxxxxxx" <xfs@xxxxxxxxxxx>
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Organization: SGI Engineering
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Eric Sandeen wrote:
Lance Reed wrote:
Thanks for the quick response.

Actually, I was able to run an xfs_repair and all was well.(took 45 minutes...)

But I would love to be able to expand the XFS file system out to the max.

I guess I could expand it in < 2TB increments then maybe?

Thanks for the update and I will look around.

I did find this which I think is related.

http://oss.sgi.com/archives/xfs/2008-01/msg00097.html

Yep, I think expanding it in, say, 1T increments should be fine, and it
 should all (I think...) end up the same as if you'd done it all at once
(modulo the bug, of course...)

I think we verified a while back that growing in 2T increments is an
effective workaround - the bug is due to a signed 32 bit overflow.
The fix has been available for some time now, but apparently hasn't
made it's way into Centos yet.

Cheers

--

 Mark Goodwin                                  markgw@xxxxxxx
 Engineering Manager for XFS and PCP    Phone: +61-3-99631937
 SGI Australian Software Group           Cell: +61-4-18969583
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