On Mon, 18 Oct 2010 19:52:36 +0100 Tim Small <tim@xxxxxxxxxxx> wrote: > Neil Brown wrote: > > Maybe if you can get me a full sysrq-T list that might help. > > > > At last, yes, courtesy of Ben Hutchings... > > http://buttersideup.com/files/md-raid1-lockup-lvm-snapshot/deadlock-openvz-2.6.26-Debian5.txt Thanks! > > ... any use? Only in as much as that it excludes some possible avenues of investigation, which has some value. But I'm out of ideas. I cannot think of anything that could keep ->nr_pending or ->barrier elevated such that raise_barrier would block for a long time. Maybe you could try adding printks to print conf->{barrier,nr_pending,nr_waiting,nr_queued} just before and after the second wait_event_lock_irq in raise_barrier(). That might help... NeilBrown > > Cheers, > > Tim. > -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
