RE: Far too long mount time

-----Original Message-----
From: Justin Piszcz [mailto:jpiszcz@lucidpixels.com] 
Sent: Friday, August 17, 2012 10:48 AM
To: 'Theodore Ts'o'; 'Calvin Walton'; ap@solarrain.com
Cc: 'Andreas Dilger'; 'Javier Marcet'; 'Linux Ext4 Mailing List'
Subject: RE: Far too long mount time



-----Original Message-----
From: Theodore Ts'o [mailto:tytso@mit.edu] 
Sent: Friday, August 17, 2012 9:55 AM
To: Calvin Walton
Cc: Andreas Dilger; Javier Marcet; Linux Ext4 Mailing List;
jpiszcz@lucidpixels.com
Subject: Re: Far too long mount time

On Thu, Aug 16, 2012 at 02:53:37PM -0400, Theodore Ts'o wrote:

This patch should solve the problem (as an alternative to reverting
8aeb00ff85a).

This should be "grp"; stupid typo on my part.

This patch with the fix-up will be pushed to Linus shortly and tagged
for the stable tree.

--

Hi Theo,

Found the patch here:
http://www.spinics.net/lists/linux-ext4/msg33498.html

Patched against the fresh+stable 3.5.1 tree:

p34:/usr/src/linux-3.5.1# patch -p1 < ../tso.patch
patching file fs/ext4/super.c
Hunk #1 succeeded at 3109 (offset -20 lines).
p34:/usr/src/linux-3.5.1#

Rebooted, but we have a problem, my 60TB RAID-6 is now a 46TB RAID-6?
I am rebooting back into the 3.5.1+earlier reverted patch.

p34:~# uptime; uname -a ; df -h | grep /r1
 10:46:51 up 0 min,  1 user,  load average: 1.04, 0.27, 0.09
Linux p34 3.5.1 #5 SMP Fri Aug 17 10:24:22 EDT 2012 x86_64 GNU/Linux
/dev/sda1        46T  1.5T   45T   4% /r1
p34:~#
--

Went back to old kernel (w/reverted patch, it is ok now)

p34:~# uname -a; uptime; df -h |grep /r1
Linux p34 3.5.1+ #3 SMP Sun Aug 12 10:31:34 EDT 2012 x86_64 GNU/Linux
 10:59:51 up 9 min,  1 user,  load average: 0.00, 0.20, 0.23
/dev/sda1        61T   16T   45T  27% /r1
p34:~#

Justin.