Re: Repairing a possibly incomplete xfs_growfs command?

[David Chinner <dgc@sgi.com>]

On Thu, Jan 17, 2008 at 03:29:17PM -0800, Mark Magpayo wrote:
> This is quite a relief to know that this is a fairly straightforward
> fix!  What luck that you had encountered it recently, I really
> appreciate the help.  Here's my uname output:
> 
> Linux purenas 2.6.16.55-c1 #1 SMP Fri Oct 19 16:45:15 EDT 2007 x86_64
> GNU/Linux
> 
> Maybe you guys fixed the bug already?

/me breathes a sigh of relief

I think we have:

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=20f4ebf2bf2f57c1a9abb3655391336cc90314b3

[XFS] Make growfs work for amounts greater than 2TB
 
> iirc, I may have run xfs_growfs with an older version of xfsprogs, then
> was advised to update to the newest and try it again.  I may have run it
> on a version that still contained the bug?

Kernel bug, not userspace bug, AFAICT.

> So is this all I need then prior to an xfs_repair?:
> 
> > # for i in `seq 0 1 63`; do
> > > xfs_db -x -c "sb $i" -c 'write agcount 64' -c 'write dblock 4761733120'
> > /dev/vg0/lv0

Yes, I think that is all that is necessary (that+repair was what fixed
the problem at the customer site successfully).

Cheers,

Dave.
-- 
Dave Chinner
Principal Engineer
SGI Australian Software Group