https://bugzilla.kernel.org/show_bug.cgi?id=44731 --- Comment #2 from Anssi Hannula <anssi.hannula@xxxxxx> 2012-07-16 20:54:14 --- Created an attachment (id=75501) --> (https://bugzilla.kernel.org/attachment.cgi?id=75501) sysrq-w output on 3.4.2 with frozen filesystem dm-4 I'm seeing a very similar issue on 3.4.2. I think this issue didn't exist several major versions back. When one or more applications do intensive I/O, the filesystem freezes and all processes trying to access it freeze as well. It doesn't always happen in the same way, though. Sometimes I get the "task blocked for more than 120 seconds", but sometimes I don't (in the attached case I didn't get those). Also, sometimes the system becomes usable again after several minutes of being seemingly frozen, but often it doesn't recover (like in the attached case). If wanted, I can provide more logs of these different situations (the logs do look very similar than the ones on this report, though). In the attachment the frozen fs is dm-4. It is on the same LVM VG and RAID-6 as dm-3, dm-5, dm-6, and those other filesystems continued to work while dm-4 was frozen. -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are watching the assignee of the bug. -- 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
