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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: Lance Reed <lreed@xxxxxxxxxxxxxx>
Date: Tue, 29 Apr 2008 12:52:26 -0400
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Thread-topic: Problems with xfs_grow on large LVM + XFS filesystem 20TB size check 2 failed
Thanks,

Sorry, I am a bit confused on the "data section" vs. the "real-time section"?

Is it enough to just run "xfs_growfs -D XXX  /mntpoint" and the rest should 
fall into place.

Again, sorry for being dense.
I really appraciate the rapid feedback.

Thanks,

Lance

-----Original Message-----
From: Eric Sandeen [mailto:sandeen@xxxxxxxxxxx]
Sent: Tuesday, April 29, 2008 12:44 PM
To: Lance Reed
Cc: markgw@xxxxxxx; xfs@xxxxxxxxxxx
Subject: Re: Problems with xfs_grow on large LVM + XFS filesystem 20TB size 
check 2 failed

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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