https://bugzilla.kernel.org/show_bug.cgi?id=201331 Eric Sandeen (sandeen@xxxxxxxxxxx) changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |sandeen@xxxxxxxxxxx Assignee|filesystem_xfs@kernel-bugs. |io_md@xxxxxxxxxxxxxxxxxxxx |kernel.org | --- Comment #11 from Eric Sandeen (sandeen@xxxxxxxxxxx) --- One thing that's kind of weird is this: [ 1679.494859] md: md2: resync done. [ 5679.900329] INFO: task tar:18235 blocked for more than 120 seconds. almost exactly 4000 seconds? Maybe a coincidence. The messages from md's bitmap_startwrite is almost the same timestamp, too: [ 5679.904044] INFO: task kworker/u24:3:18307 blocked for more than 120 seconds. md is scheduled out here: if (unlikely(COUNTER(*bmc) == COUNTER_MAX)) { DEFINE_WAIT(__wait); /* note that it is safe to do the prepare_to_wait * after the test as long as we do it before dropping * the spinlock. */ prepare_to_wait(&bitmap->overflow_wait, &__wait, TASK_UNINTERRUPTIBLE); spin_unlock_irq(&bitmap->counts.lock); schedule(); finish_wait(&bitmap->overflow_wait, &__wait); continue; } So md is waiting to be woken up when the bitmap writer finishes. Details aside, I really do think that xfs is the victim/messenger here; we should at least try to get some md eyes on this one as well. -- You are receiving this mail because: You are watching the assignee of the bug.
