Another occurrence:
Mar 21 12:14:34 infra3 cloud-init[2891]: mdadm: stop failed, retrying in 0.2 seconds Mar 21 12:14:34 infra3 cloud-init[2891]: mdadm: stop on /dev/md127 attempt 6 Mar 21 12:14:34 infra3 cloud-init[2891]: /sys/class/block/md127/md/sync_action/sync_max = recover Mar 21 12:14:34 infra3 cloud-init[2891]: mdadm: setting array sync_action=idle Mar 21 12:14:34 infra3 cloud-init[2891]: /sys/class/block/md127/md/sync_max/sync_max = 0 Mar 21 12:14:34 infra3 cloud-init[2891]: Running command ['mdadm', '--manage', '--stop', '/dev/md127'] with allowed return codes [0] (capture=True) Mar 21 12:14:34 infra3 cloud-init[2891]: mdadm stop failed, retrying Mar 21 12:14:34 infra3 cloud-init[2891]: /proc/mdstat: Mar 21 12:14:34 infra3 cloud-init[2891]: Personalities : [raid6] [raid5] [raid4] [linear] [multipath] [raid0] [raid1] [raid10] Mar 21 12:14:34 infra3 cloud-init[2891]: md127 : active raid5 sdd[3] sdc[1] sdb[0] Mar 21 12:14:34 infra3 cloud-init[2891]: 1953262592 blocks super 1.2 level 5, 512k chunk, algorithm 2 [3/2] [UU_] Mar 21 12:14:34 infra3 cloud-init[2891]: [>....................] recovery = 0.1% (1029720/976631296) finish=1016251.6min speed=0K/sec Mar 21 12:14:34 infra3 cloud-init[2891]: bitmap: 2/8 pages [8KB], 65536KB chunk Mar 21 12:14:34 infra3 cloud-init[2891]: Mar 21 12:14:34 infra3 cloud-init[2891]: unused devices: <none> Mar 21 12:14:34 infra3 cloud-init[2891]: Mar 21 12:14:34 infra3 cloud-init[2891]: mdadm: stop failed, retrying in 0.2 seconds Mar 21 12:14:34 infra3 cloud-init[2891]: mdadm: stop on /dev/md127 attempt 7 Mar 21 12:14:34 infra3 cloud-init[2891]: /sys/class/block/md127/md/sync_action/sync_max = recover Mar 21 12:14:34 infra3 cloud-init[2891]: mdadm: setting array sync_action=idle Mar 21 12:14:34 infra3 cloud-init[2891]: /sys/class/block/md127/md/sync_max/sync_max = 0 Mar 21 12:14:34 infra3 cloud-init[2891]: Running command ['mdadm', '--manage', '--stop', '/dev/md127'] with allowed return codes [0] (capture=True) Mar 21 12:14:34 infra3 cloud-init[2891]: mdadm stop failed, retrying Mar 21 12:14:34 infra3 cloud-init[2891]: /proc/mdstat: Mar 21 12:14:34 infra3 cloud-init[2891]: Personalities : [raid6] [raid5] [raid4] [linear] [multipath] [raid0] [raid1] [raid10] Mar 21 12:14:34 infra3 cloud-init[2891]: md127 : active raid5 sdd[3] sdc[1] sdb[0] Mar 21 12:14:34 infra3 cloud-init[2891]: 1953262592 blocks super 1.2 level 5, 512k chunk, algorithm 2 [3/2] [UU_] Mar 21 12:14:34 infra3 cloud-init[2891]: [>....................] recovery = 0.1% (1029720/976631296) finish=1016251.6min speed=0K/sec Mar 21 12:14:34 infra3 cloud-init[2891]: bitmap: 2/8 pages [8KB], 65536KB chunk
Another occurrence:
Mar 21 12:14:34 infra3 cloud-init[2891]: mdadm: stop failed, retrying in 0.2 seconds block/md127/ md/sync_ action/ sync_max = recover block/md127/ md/sync_ max/sync_ max = 0 ....... ....... .] recovery = 0.1% (1029720/976631296) finish=1016251.6min speed=0K/sec block/md127/ md/sync_ action/ sync_max = recover block/md127/ md/sync_ max/sync_ max = 0 ....... ....... .] recovery = 0.1% (1029720/976631296) finish=1016251.6min speed=0K/sec
Mar 21 12:14:34 infra3 cloud-init[2891]: mdadm: stop on /dev/md127 attempt 6
Mar 21 12:14:34 infra3 cloud-init[2891]: /sys/class/
Mar 21 12:14:34 infra3 cloud-init[2891]: mdadm: setting array sync_action=idle
Mar 21 12:14:34 infra3 cloud-init[2891]: /sys/class/
Mar 21 12:14:34 infra3 cloud-init[2891]: Running command ['mdadm', '--manage', '--stop', '/dev/md127'] with allowed return codes [0] (capture=True)
Mar 21 12:14:34 infra3 cloud-init[2891]: mdadm stop failed, retrying
Mar 21 12:14:34 infra3 cloud-init[2891]: /proc/mdstat:
Mar 21 12:14:34 infra3 cloud-init[2891]: Personalities : [raid6] [raid5] [raid4] [linear] [multipath] [raid0] [raid1] [raid10]
Mar 21 12:14:34 infra3 cloud-init[2891]: md127 : active raid5 sdd[3] sdc[1] sdb[0]
Mar 21 12:14:34 infra3 cloud-init[2891]: 1953262592 blocks super 1.2 level 5, 512k chunk, algorithm 2 [3/2] [UU_]
Mar 21 12:14:34 infra3 cloud-init[2891]: [>.....
Mar 21 12:14:34 infra3 cloud-init[2891]: bitmap: 2/8 pages [8KB], 65536KB chunk
Mar 21 12:14:34 infra3 cloud-init[2891]:
Mar 21 12:14:34 infra3 cloud-init[2891]: unused devices: <none>
Mar 21 12:14:34 infra3 cloud-init[2891]:
Mar 21 12:14:34 infra3 cloud-init[2891]: mdadm: stop failed, retrying in 0.2 seconds
Mar 21 12:14:34 infra3 cloud-init[2891]: mdadm: stop on /dev/md127 attempt 7
Mar 21 12:14:34 infra3 cloud-init[2891]: /sys/class/
Mar 21 12:14:34 infra3 cloud-init[2891]: mdadm: setting array sync_action=idle
Mar 21 12:14:34 infra3 cloud-init[2891]: /sys/class/
Mar 21 12:14:34 infra3 cloud-init[2891]: Running command ['mdadm', '--manage', '--stop', '/dev/md127'] with allowed return codes [0] (capture=True)
Mar 21 12:14:34 infra3 cloud-init[2891]: mdadm stop failed, retrying
Mar 21 12:14:34 infra3 cloud-init[2891]: /proc/mdstat:
Mar 21 12:14:34 infra3 cloud-init[2891]: Personalities : [raid6] [raid5] [raid4] [linear] [multipath] [raid0] [raid1] [raid10]
Mar 21 12:14:34 infra3 cloud-init[2891]: md127 : active raid5 sdd[3] sdc[1] sdb[0]
Mar 21 12:14:34 infra3 cloud-init[2891]: 1953262592 blocks super 1.2 level 5, 512k chunk, algorithm 2 [3/2] [UU_]
Mar 21 12:14:34 infra3 cloud-init[2891]: [>.....
Mar 21 12:14:34 infra3 cloud-init[2891]: bitmap: 2/8 pages [8KB], 65536KB chunk