Re: Corrupted files after suspend to disk

Eric Sandeen
2012-02-16T23:27:29Z

On 2/16/12 8:30 AM, Dave Jones wrote:
> On Thu, Feb 16, 2012 at 11:52:27AM +0100, richard -rw- weinberger wrote:
>
> > >> >> Of course, please test the above separately. :-)
> > >> >
> > >> > Ok, I'll test this when I'm at home.
> > >> >
> > >> > BTW: dropping the caches helps, when some files seem corrupted.
> > >> > Today /usr/bin/okular was broken.
> > >> > After setting vm.drop_caches=1 it worked again.
> > >>
> > >> On Linux 2.6.38 I'm unable to reproduce the issue.
> > >> Only 2.6.37 seems to be affected.
> > >> So, I'm moving over to 2.6.38. :)
> > >
> > Bad news:
> > I saw the issue on 3.x too but thought it's because my IdeaPad s10 is crap.
> > Now with my shiny new Lenovo x121e I have the same issue! :-(
> >
> > OpenSUSE 12.1, kernel 3.2.7.
> > After a few suspend2disk iterations random files are corrupted.
> > But only cached files. A reboot solves the problem.

Just to be clear - you see _data_ corruption in files, but only
until a reboot, and after that they are ok? Ok, reading above
about using drop_caches that sounds like the case.

That sounds different from what I saw in the bug Dave mentions
below, but possibly related root cause, I suppose.

-Eric

> FWIW, we've been seeing a number of hard to diagnose failures
> with suspend to disk for the last few releases in Fedora.
> Eric Sandeen has been chasing https://bugzilla.redhat.com/show_bug.cgi?id=744275
> for a while, but there's no smoking gun that really explains what's
> getting into these states. Further complicating things, is that it
> doesn't seem to be 100% reproducable.
>
> Dave
>