Re: Problems with xfs_grow on large LVM + XFS filesystem 20TB size check 2 failed

[Mark Goodwin <markgw@xxxxxxx>]

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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