Re: 2.6.22-rc3 hibernate(?) fails totally - regression (xfs on raid6)

David Greaves
2007-06-07T10:30:15Z

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 :)

> How hard does the machine freeze? Can you use sysrq? If so, please
> dump sysrq-t.
I suspect there is a problem writing to the consoles...

I recompiled (rc4+patch) with sysrq support, suspended, resumed and tried
sysrq-t but got no output.

I *can* change VTs and see the various login prompts, bitmap messages and the
console messages. Caps/Num lock lights work.

Fearing incompetence I tried sysrq-s sysrq-u sysrq-b and got a reboot so sysrq
is OK.

Any suggestions on how to see more? Or what to try next?

Any other kernel debug options to set?

David
PS Back in a couple of hours...