Public bug reported: # lsb_release -rd Description: Ubuntu 18.04 LTS Release: 18.04
udisks2: 2.7.6-3 libblockdev-mdraid2: 2.16-2 Ubuntu 18.04, freshly upgraded from 16.04 via 17.10; system ran OK for about 72h before issue. Filesystem on faulty raid is XFS, and raid is raid 10 far-copies: md3 : active raid10 sdb4[2] sda4[4] 524155904 blocks super 1.2 512K chunks 2 far-copies [2/2] [UU] What happened: A "git commit" could not succeed. Process was impossible to kill. Load reported by xload reached outstanding levels; system was still responsive however, but impossible to halt, waiting for disk sync that never occurred. I had to reboot the hard way. After reboot, /home could not mount, and boot process dropped me to a root console. I could see that mdadm reported ongoing reconstruction, but frozen at some point. In the logs: May 6 01:35:35 localhost kernel: [58614.835510] INFO: task xfsaild/md3:1056 blocked for more than 120 seconds. May 6 01:35:35 localhost kernel: [58614.835521] Tainted: G OE 4.15.0-20-lowlatency #21-Ubuntu May 6 01:35:35 localhost kernel: [58614.835524] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. May 6 01:35:35 localhost kernel: [58614.835529] xfsaild/md3 D 0 1056 2 0x80000000 May 6 01:35:35 localhost kernel: [58614.835535] Call Trace: May 6 01:35:35 localhost kernel: [58614.835552] __schedule+0x299/0x8c0 May 6 01:35:35 localhost kernel: [58614.835560] schedule+0x33/0x90 May 6 01:35:35 localhost kernel: [58614.835570] wait_barrier+0x134/0x190 [raid10] May 6 01:35:35 localhost kernel: [58614.835578] ? wait_woken+0x80/0x80 May 6 01:35:35 localhost kernel: [58614.835585] raid10_write_request+0x77/0x950 [raid10] ... Another line of interest: May 6 02:05:59 localhost udisksd[1480]: failed to load module mdraid: libbd_mdraid.so.2: cannot open shared object file: No such file or directory Actually, package libblockdev-mdraid2 is missing. Added it as well as libblockdev-mpath2. Rebooted. mdadm starts reconstruction and is OK when I come back from sleep. System looks stable since then. ** Affects: udisks2 (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1769553 Title: xfs blocks on unresponsive raid - blockdev module is missing To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/udisks2/+bug/1769553/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs