Re: [linux-lvm] 2.6.22-rc5 XFS fails after hibernate/resume

David Greaves
2007-07-02T16:36:27Z

Rafael J. Wysocki wrote:
> On Monday, 2 July 2007 16:32, David Greaves wrote:
>> Rafael J. Wysocki wrote:
>>> On Monday, 2 July 2007 12:56, Tejun Heo wrote:
>>>> David Greaves wrote:
>>>>>> Tejun Heo wrote:
>>>>>>> It's really weird tho. The PHY RDY status changed events are coming
>>>>>>> from the device which is NOT used while resuming
>>>>> There is an obvious problem there though Tejun (the errors even when sda
>>>>> isn't involved in the OS boot) - can I start another thread about that
>>>>> issue/bug later? I need to reshuffle partitions so I'd rather get the
>>>>> hibernate working first and then go back to it if that's OK?
>>>> Yeah, sure. The problem is that we don't know whether or how those two
>>>> are related. It would be great if there's a way to verify memory image
>>>> read from hibernation is intact. Rafael, any ideas?
>>> Well, s2disk has an option to compute an MD5 checksum of the image during
>>> the hibernation and verify it while reading the image.
>> (Assuming you mean the mainline version)
>>
>> Sounds like a good think to try next...
>> Couldn't see anything on this in ../Documentation/power/*
>> How do I enable it?
>
> Add 'compute checksum = y' to the s2disk's configuration file.

Ah, right - that's uswsusp isn't it? Which isn't what I'm having problems with
AFAIK?

My suspend procedure is:

xfs_freeze -f /scratch
sync
echo platform > /sys/power/disk
echo disk > /sys/power/state
xfs_freeze -u /scratch

Which should work (actually it should work without the sync/xfs_freeze too).

So to debug the problem I'd like to minimally extend this process rather than
replace it with another approach.

I take it there isn't an 'echo y > /sys/power/do_image_checksum'?

David