Hi,
for some reason linux appears to be ignoring my sync_action requests:
root@nas:~# uname -a
Linux nas 3.5.4 #1 SMP Sat Sep 15 15:41:21 CEST 2012 x86_64 GNU/Linux
root@nas:~# echo /sys/block/md*/md/sync_action
/sys/block/md1/md/sync_action
root@nas:~# cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md1 : active (auto-read-only) raid5 sdb[5] sdg[9] sdd[7] sdf[6] sde[8]
sdc[2] sda[1]
11719408128 blocks super 1.2 level 5, 64k chunk, algorithm 2
[7/7] [UUUUUUU]
bitmap: 0/15 pages [0KB], 65536KB chunk
unused devices: <none>
root@nas:~# echo check >/sys/block/md1/md/sync_action
root@nas:~# cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md1 : active (auto-read-only) raid5 sdb[5] sdg[9] sdd[7] sdf[6] sde[8]
sdc[2] sda[1]
11719408128 blocks super 1.2 level 5, 64k chunk, algorithm 2
[7/7] [UUUUUUU]
bitmap: 0/15 pages [0KB], 65536KB chunk
unused devices: <none>
root@nas:~# echo repair >/sys/block/md1/md/sync_action
root@nas:~# cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md1 : active (auto-read-only) raid5 sdb[5] sdg[9] sdd[7] sdf[6] sde[8]
sdc[2] sda[1]
11719408128 blocks super 1.2 level 5, 64k chunk, algorithm 2
[7/7] [UUUUUUU]
bitmap: 0/15 pages [0KB], 65536KB chunk
unused devices: <none>
root@nas:~# mdadm -Q --detail /dev/md1
/dev/md1:
Version : 1.2
Creation Time : Thu Sep 9 20:43:43 2010
Raid Level : raid5
Array Size : 11719408128 (11176.50 GiB 12000.67 GB)
Used Dev Size : 1953234688 (1862.75 GiB 2000.11 GB)
Raid Devices : 7
Total Devices : 7
Persistence : Superblock is persistent
Intent Bitmap : Internal
Update Time : Sat Sep 22 23:28:50 2012
State : active
Active Devices : 7
Working Devices : 7
Failed Devices : 0
Spare Devices : 0
Layout : left-symmetric
Chunk Size : 64K
Name : nas:1 (local to host nas)
UUID : 5dbc572f:0e6b18bd:125db183:3511c054
Events : 109708
Number Major Minor RaidDevice State
5 8 16 0 active sync /dev/sdb
1 8 0 1 active sync /dev/sda
2 8 32 2 active sync /dev/sdc
8 8 64 3 active sync /dev/sde
6 8 80 4 active sync /dev/sdf
7 8 48 5 active sync /dev/sdd
9 8 96 6 active sync /dev/sdg
Nothing in dmesg/syslog.
No idea what's going on. :(
Alex.
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