Hi Scott,
my swapfile has been created once for all, so unless files are moving by
themselves in the hard drive its offset should never change.
In any case, I checked it across reboots and it's always the same.
If I read a few sectors from the hard drive with 'dd' starting from that offset
and then I run a 'file' command on the data I collected I get a swap signature,
so I'm sure the offset is correct.
As I stated in my original bug report, resuming from swapfile used to work
correctly on karmic: why do you say you don't support it? Do you mean: you
don't support it anymore?
Somewhere, in one of the ubuntu documentation pages (sorry I don't have the
link at hand), I read using swapfiles should be preferred instead of swap
partitions: so, in my opinion, resuming from swapfiles *should* be supported.
At the end of the script '/usr/share/initramfs-tools/scripts/local-
premount/resume', you can find this:
SWAPTYPE=$(wait-for-root "${resume}" ${RESUMEDELAY:-5})
case "${SWAPTYPE}" in
swsuspend|s1suspend|s2suspend|ulsuspend|tuxonice)
if [ -x /bin/plymouth ] && plymouth --ping; then
plymouth message --text="Resuming from $resume"
fi
# hardcode path, uswsusp ships an resume binary too
if [ -n "${resume_offset}" ]; then
/bin/resume ${resume} ${resume_offset} >/dev/null 2>&1
else
/bin/resume ${resume} >/dev/null 2>&1
fi
;;
esac
So: 'wait-for-root' does *NOT* only wait for the partition to become active, it
also detects *IF* any hybernation occurred and it decides the kind of
hybernation data.
Question: if 'wait-for-root' doen't know about the offset of my swapfile, how
can it know if my pc was hybernated or not?
The 'resume' program, in my case and in my opinion, is *NOT* executed at all,
so it can't be its fault.
Thank you for your help on this matter, I really appreciate it!
--
Resume from disk (swapfile) fails
https://bugs.launchpad.net/bugs/554009
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