From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Rafael J. Wysocki" Subject: Re: Corrupted files after suspend to disk Date: Thu, 16 Feb 2012 22:51:46 +0100 Message-ID: <201202162251.47063.rjw@sisk.pl> References: <20120216163030.GA32651@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20120216163030.GA32651@redhat.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-pm-bounces@lists.linux-foundation.org Errors-To: linux-pm-bounces@lists.linux-foundation.org To: Dave Jones Cc: richard -rw- weinberger , linux-pm@lists.linux-foundation.org, LKML , esandeen@redhat.com List-Id: linux-pm@vger.kernel.org On Thursday, February 16, 2012, 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. > > 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. I wonder if that's reproducible with the filesystems freezing patch I posted some time ago (it will need some rebasing to apply to the current mainline or 3.2.y). I also thing that this problem discovered by Alan Stern may be involved: http://marc.info/?l=linux-pm&m=132940331030253&w=4 Thanks, Rafael