From: David Greaves <david@dgreaves.com>
To: David Chinner <dgc@sgi.com>
Cc: Tejun Heo <htejun@gmail.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
"Rafael J. Wysocki" <rjw@sisk.pl>,
xfs@oss.sgi.com,
"'linux-kernel@vger.kernel.org'" <linux-kernel@vger.kernel.org>,
linux-pm <linux-pm@lists.osdl.org>, Neil Brown <neilb@suse.de>
Subject: Re: 2.6.22-rc3 hibernate(?) fails totally - regression (xfs on raid6)
Date: Thu, 07 Jun 2007 14:59:58 +0100 [thread overview]
Message-ID: <46680F5E.6070806@dgreaves.com> (raw)
In-Reply-To: <20070607110708.GS86004887@sgi.com>
David Chinner wrote:
> On Thu, Jun 07, 2007 at 11:30:05AM +0100, David Greaves wrote:
>> Tejun Heo wrote:
>>> Hello,
>>>
>>> David Greaves wrote:
>>>> Just to be clear. This problem is where my system won't resume after s2d
>>>> unless I umount my xfs over raid6 filesystem.
>>> This is really weird. I don't see how xfs mount can affect this at all.
>> Indeed.
>> It does :)
>
> Ok, so lets determine if it really is XFS.
Seems like a good next step...
> Does the lockup happen with a
> different filesystem on the md device? Or if you can't test that, does
> any other XFS filesystem you have show the same problem?
It's a rather full 1.2Tb raid6 array - can't reformat it - sorry :)
I only noticed the problem when I umounted the fs during tests to prevent
corruption - and it worked. I'm doing a sync each time it hibernates (see below)
and a couple of paranoia xfs_repairs haven't shown any problems.
I do have another xfs filesystem on /dev/hdb2 (mentioned when I noticed the
md/XFS correlation). It doesn't seem to have/cause any problems.
> If it is xfs that is causing the problem, what happens if you
> remount read-only instead of unmounting before shutting down?
Yes, I'm happy to try these tests.
nb, the hibernate script is:
ethtool -s eth0 wol g
sync
echo platform > /sys/power/disk
echo disk > /sys/power/state
So there has always been a sync before any hibernate.
cu:~# mount -oremount,ro /huge
cu:~# mount
/dev/hda2 on / type xfs (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
usbfs on /proc/bus/usb type usbfs (rw)
tmpfs on /dev/shm type tmpfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
nfsd on /proc/fs/nfsd type nfsd (rw)
/dev/hda1 on /boot type ext3 (rw)
/dev/md0 on /huge type xfs (ro)
/dev/hdb2 on /scratch type xfs (rw)
tmpfs on /dev type tmpfs (rw,size=10M,mode=0755)
rpc_pipefs on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
cu:(pid2862,port1022) on /net type nfs
(intr,rw,port=1022,toplvl,map=/usr/share/am-utils/amd.net,noac)
elm:/space on /amd/elm/root/space type nfs (rw,vers=3,proto=tcp)
elm:/space-backup on /amd/elm/root/space-backup type nfs (rw,vers=3,proto=tcp)
elm:/usr/src on /amd/elm/root/usr/src type nfs (rw,vers=3,proto=tcp)
cu:~# /usr/net/bin/hibernate
[this works and resumes]
cu:~# mount -oremount,rw /huge
cu:~# /usr/net/bin/hibernate
[this works and resumes too !]
cu:~# touch /huge/tst
cu:~# /usr/net/bin/hibernate
[but this doesn't even hibernate]
> What about freezing the filesystem?
cu:~# xfs_freeze -f /huge
cu:~# /usr/net/bin/hibernate
[but this doesn't even hibernate - same as the 'touch']
Nb the screen looks like this:
http://www.dgreaves.com/pub/2.6.21-rc4-ptched-suspend-failure.jpg
whether it hangs on suspend or resume.
So I wouldn't say it *is* XFS at fault - but there certainly seems to be an
interaction...
At least it's easily reproducible :) Shame about the sysrq
I can think of other permutations of freeze/ro/writing tests but I'm just
thrashing really. Happy for you to tell me what to try next ...
David
next prev parent reply other threads:[~2007-06-07 14:00 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-01 21:23 2.6.22-rc3 hibernate(?) disables skge wol David Greaves
2007-06-01 21:42 ` Rafael J. Wysocki
2007-06-01 22:37 ` 2.6.22-rc3 hibernate(?) fails totally - regression David Greaves
2007-06-01 23:22 ` Rafael J. Wysocki
2007-06-02 22:31 ` David Greaves
2007-06-02 22:46 ` Linus Torvalds
2007-06-03 15:03 ` David Greaves
2007-06-06 8:33 ` Tejun Heo
2007-06-06 10:18 ` [PATCH] sata_promise: use TF interface for polling NODATA commands Tejun Heo
2007-06-06 10:19 ` Tejun Heo
2007-06-06 10:39 ` 2.6.22-rc3 hibernate(?) fails totally - regression (xfs on raid6) David Greaves
2007-06-07 5:53 ` Tejun Heo
2007-06-07 10:30 ` David Greaves
2007-06-07 11:07 ` David Chinner
2007-06-07 13:59 ` David Greaves [this message]
2007-06-07 22:28 ` David Chinner
2007-06-08 19:09 ` David Greaves
2007-06-12 18:43 ` Linus Torvalds
2007-06-13 11:16 ` David Greaves
2007-06-13 21:04 ` Linus Torvalds
2007-06-13 21:22 ` Jeff Garzik
2007-06-13 22:02 ` David Greaves
2007-06-13 22:12 ` Linus Torvalds
2007-06-13 23:15 ` Rafael J. Wysocki
2007-06-14 14:21 ` Tejun Heo
2007-06-14 15:10 ` Tejun Heo
2007-06-15 9:42 ` [PATCH] block: always requeue !fs requests at the front Tejun Heo
2007-06-15 11:05 ` Jens Axboe
2007-06-15 11:17 ` Tejun Heo
2007-06-15 11:21 ` Jens Axboe
2007-06-15 15:08 ` Jeff Garzik
2007-06-16 19:54 ` Christoph Hellwig
2007-06-17 7:29 ` Jens Axboe
2007-06-17 8:03 ` Tejun Heo
2007-06-15 13:58 ` David Greaves
2007-06-14 15:19 ` 2.6.22-rc3 hibernate(?) fails totally - regression (xfs on raid6) David Greaves
2007-06-14 0:28 ` David Chinner
2007-06-12 12:31 ` David Greaves
2007-06-10 18:43 ` Pavel Machek
2007-06-12 18:00 ` David Greaves
2007-06-12 21:31 ` Pavel Machek
2007-06-07 13:45 ` Duane Griffin
2007-06-07 14:00 ` David Greaves
2007-06-07 14:05 ` Tejun Heo
2007-06-07 14:36 ` Mark Lord
2007-06-07 15:20 ` David Greaves
2007-06-07 16:58 ` Rafael J. Wysocki
2007-06-07 20:12 ` Pavel Machek
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