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

To: Lance Reed <lreed@xxxxxxxxxxxxxx>
Subject: Re: Problems with xfs_grow on large LVM + XFS filesystem 20TB size check 2 failed
From: Eric Sandeen <sandeen@xxxxxxxxxxx>
Date: Tue, 29 Apr 2008 11:43:50 -0500
Cc: "markgw@xxxxxxx" <markgw@xxxxxxx>, "xfs@xxxxxxxxxxx" <xfs@xxxxxxxxxxx>
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Lance Reed wrote:
> Thanks so much for all the info!
> 
> I am currently looking over the
> http://oss.sgi.com/archives/xfs/2008-01/msg00097.html
> post to figure  out if I need to do antyhing manual to finish expanding the 
> filesystem.
> 
> If it is possible to expand in increments less than 2 TB, is there a way to 
> do this via xfs_growfs?  I am a bit confused by the -D and -R options and 
> which one would be relevant here.  Or do I have to shrink the LVM Logical 
> Volume first and then just run "xfs_grow /mntpoint".
> Also, can I run with the "-n" option to confirm if the xfs_growfs command 
> "should" complete correctly each time? (looking for docs on this...)
> 
> Is there any reason I couldn't grab a newerer release of the XFS tools, etc, 
> and compile for CentOs 5.0 and use them in this case?

Well, it's there's a kernel bug when growing by >2T so it's not just a
tools issue...

From what Mark said it sounds like growing 2T at a time is fine.

you can specify sizes on the xfs_growfs commandline, as specified in the
man page.

-Eric


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