On Fri, Oct 02, 2015 at 10:53:40AM +0200, Marc Lehmann wrote: > On Thu, Oct 01, 2015 at 08:51:24PM +0200, Marc Lehmann <schm...@schmorp.de> > wrote: > > Ok, for completeness, here is the full log and a description of what was > > going on. > > Ok, so I did a fsck, which took one hour, which is not very good, but I > don't use fsck very often. It didn't find any problems (everything Ok). > > However, I have a freeze. When I mount the volume, start a du on it, and after > a while do:
How was your scenario? Did you delete device before, or just plain mount and umount? > echo 3 >/proc/sys/vm/drop_caches > > Then this process hangs with 100% sys time. /proc/../stack gives no usable > backtrace. This should be shrinker is stuck on mutex. I suspect a deadlock. Can you do this, if you meet this again? # echo l > /proc/sysrq-trigger # echo w > /proc/sysrq-trigger # demsg Thanks, > > umount on the f2fs volume also hangs: > > [<ffffffff8139ba03>] call_rwsem_down_write_failed+0x13/0x20 > [<ffffffff8118086d>] unregister_shrinker+0x1d/0x70 > [<ffffffff811e7911>] deactivate_locked_super+0x41/0x60 > [<ffffffff811e7eee>] deactivate_super+0x4e/0x70 > [<ffffffff81204733>] cleanup_mnt+0x43/0x90 > [<ffffffff812047d2>] __cleanup_mnt+0x12/0x20 > [<ffffffff8108e8a4>] task_work_run+0xc4/0xe0 > [<ffffffff81012fa7>] do_notify_resume+0x97/0xb0 > [<ffffffff8178896f>] int_signal+0x12/0x17 > [<ffffffffffffffff>] 0xffffffffffffffff > > -- > The choice of a Deliantra, the free code+content MORPG > -----==- _GNU_ http://www.deliantra.net > ----==-- _ generation > ---==---(_)__ __ ____ __ Marc Lehmann > --==---/ / _ \/ // /\ \/ / schm...@schmorp.de > -=====/_/_//_/\_,_/ /_/\_\ > > ------------------------------------------------------------------------------ > _______________________________________________ > Linux-f2fs-devel mailing list > Linux-f2fs-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel ------------------------------------------------------------------------------ _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
