to reproduce the problem, only run following script on any softraid server:
/usr/share/mdadm/checkarray --cron --all --idle --quiet; then: # cat /proc/mdstat <<< Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md0 : active raid1 sda1[0] sdb1[1] 248640 blocks super 1.2 [2/2] [UU] md1 : active raid1 sda2[0] sdb2[1] 292587328 blocks super 1.2 [2/2] [UU] [>....................] check = 0.0% (74240/292587328) finish=65.6min speed=74240K/sec -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/212684 Title: RAID1 data-checks cause CPU soft lockups To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/212684/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs