Re: [gentoo-user] Suspend to swap on a diskless host

[Hans-Werner Hilse]

Hi,

On Wed, 23 May 2007 11:59:23 -0500
Dan Farrell <dan@×××××××××.cx> wrote:

> I know swapon doesn't work on regular files, so to add my swap I need
> to first use losetup to set up /dev/loop0 as my swap device.  Then
> swapon /dev/loop0 works.  but how can I enable swap on loop0 before the
> initscripts boot (right now I have it done in local.start).  Don't I
> need to be able to mount the swap as swap right away to resume from
> it?  Or will it be enought to specify the location?  If not, is there
> some way to specify loop settings at boot time, on the kernel command
> line?

Check out userspace suspend (http://suspend.sf.net/). It's not in
portage, but will do what you want since you can resume from an initrd.
In the initrd, you can open a network connection, mount all that stuff
(you never told where that looped file is located, so I guess it's on
r/w NFS) and then resume. It's not implemented at the moment, I think,
but should be easy to add ("remote suspending" is mentioned as an
"easy" possibility).

-hwh
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