Re: [Swsusp-devel] [PATCH 2.6]: suspend to disk only available ifnon-modular IDE

From: Nigel Cunningham
Date: Tue Mar 30 2004 - 02:04:05 EST


On Tue, 2004-03-30 at 07:34, Andreas Jellinghaus wrote:
> so suspend to disk does not work with scsi?
> >> > - depends on PM && SWAP
> >> > + depends on PM && SWAP && IDE=y && BLK_DEV_IDEDISK=y
> implies IDE is needed.

It is at the moment, I'm afraid. I'm hoping to get SCSI support for
suspend2 finished shortly. I did suspend a OSDL machine to SCSI in
January, but the driver lacked the power management that I needed to
reload the second half of the image and thereby be sure all was okay.

> btw: would it be somehow possible to resume after initrd phase?
> or some other idea how a generic kernel with modules in the initrd
> could use suspend to disk? or a laptop where the initrd is needed
> to setup a dm-crypt volume with the right decrypton key?

That should be doable, provided that the initrd doesn't mount anything.
Decryption is 'interesting'. The key needs to be set up in the resumed
kernel too. (Shouldn't be a problem, if you manage to suspend to it!).


Nigel Cunningham
C/- Westminster Presbyterian Church Belconnen
61 Templeton Street, Cook, ACT 2614.
+61 (2) 6251 7727(wk); +61 (2) 6253 0250 (home)

Evolution (n): A hypothetical process whereby infinitely improbable events occur
with alarming frequency, order arises from chaos, and no one is given credit.

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