On Fri, Sep 16, 2011 at 6:49 AM, Christian Kujau <lists@xxxxxxxxxxxxxxx> wrote: > On Mon, 12 Sep 2011 at 21:52, Christian Kujau wrote: >> On Sat, 10 Sep 2011 at 22:04, Jan Kara wrote: >> > On Fri 09-09-11 18:11:26, Christian Kujau wrote: >> > > On Thu, 8 Sep 2011 at 20:51, Jan Kara wrote: >> > > > There's race where VFS remount code can race with unlink and result will >> > > > be unlinked file in orphan list on read-only filesystem. Christian seems to >> > > > be hitting this race. Miklos Szeredi has patches >> > > > (http://lkml.indiana.edu/hypermail/linux/kernel/1108.3/00169.html) to >> > > > mostly close this hole but they're waiting for Al to find time to look at >> > > > them / merge them AFAIK. >> > > >> > > While these patches are still pending review, are they "dangerous" to >> > > apply? If not, I'd like to volunteer as a tester :-) >> > As far as I saw them, they should be pretty safe. So feel free to test >> > them. >> >> I've applied them to -rc5. It might take a few days untile the message >> occurs. Or, until "nothing happens", since I have the patches applied :-) > > With Miklos' patches applied to -rc5, this happend again just now :-( > >> Meanwhile I'm trying to reproduce this issue on an x86 machine, but >> haven't succeeded yet. > > After a ~3k remounts with constantly reading from the filesystem in > question[0], I still was NOT able to reproduce this on an x86 VM :( > > Any ideas? > This is just a shot in the dark, but are you using Ubuntu on your production machine by any chance? The reason I am asking is becasue I have been getting failures to umount fs, while running xfstests on ext4 with Ubuntu for a long time and nobody else seems to share this problem. I always suspected Ubuntu has some service that keeps open handles on mounted fs, but I never got to examine this. Amir. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
