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Date: Thu, 19 Apr 2001 08:46:35 +0200
From: Ookhoi <ookhoi@dds.nl>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: "Grover, Andrew" <andrew.grover@intel.com>,
        "'Martin Hamilton'" <martin@net.lut.ac.uk>,
        "Acpi-PM (E-mail)" <linux-power@phobos.fachschaften.tu-muenchen.de>,
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Subject: Re: Linux 2.4.3-ac7
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In-Reply-To: <4148FEAAD879D311AC5700A0C969E89006CDDD9B@orsmsx35.jf.intel.com> <E14pyG2-0005c5-00@the-village.bc.nu>
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> > > I was wondering whether the swsusp work might form a useful basis
> > > for the eventual ACPI implementation of the to-disk hibernation
> > > stuff:
> > 
> > I (and others) have looked at it. It's a pretty cool patch, but it
> > really isn't the right way to do things.
> 
> swsusp is most definitely the right way to do things. It works on my
> laptop which has non suspend to disk APM, it even works on my MVP3
> board where ACPI bombs totally (BIOS bug).
> 
> It might not be the right thing to do if ACPI suspend is present
> though.
> 
> Actually swsusp has one minor problem. Because of implementation bugs
> in some of the journalled file systems like ext3 using swsusp with
> those file systems can corrupt your disks (they write to disk even
> when told to mount read only rather than replaying the log to disk
> when the mount goes r/w - which is really antisocial, breaks if you
> are trying to recover from a failed disk and wants fixing.)

I tried swsusp on my vaio (also a c1ve :-) and it didn't work because it
(said it) couldn't stop [kreiserfsd]. :-(  It didn't do any harm also
afaics. 
I have zero experience with apm and acpi, but the thing I liked about
swsusp is that it works with a sysrq key combo. 

	Ookhoi
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