Swap partition mysteriously disappears

[David Abrahams]

Derek Broughton <news at pointerstop.ca> writes:

> Does anybody have a clue how/why a swap could quietly disappear?
>
> Fairly often (enough that I'm going to put a "swapon -a" in the resume
> sequence after hibernation) it happens when I hibernate and resume -

Yeah, that happens with me; my swap is an LVM2 volume, though.

> there's obviously a valid swap partition at hibernate time, but it doesn't
> get reused after resume.  This makes sense, as I understand swsusp changes
> the partition's signature and it isn't actually a valid swap partition at
> boot time.  otoh, when this happens, "swapon -a" always works.

Not for me, IIRC.  Afraid to try again and find out; losing my swap is
a bit too scary.  I'm going to build a 2.6.18rc2 kernel and use
swsusp2, which is known to work with swap-on-LVM.

-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com