raid md device is not remove from memory, how to overcome this problem
- by santhosha
i create raid 10 , i removed two arrays form md11 one by one , after that i going to editing the contents those are mounted ( it will be not responding stage), after i try for remove arrays those are left it is shows device or resource busy ( is not removed from memory).
i try to terminate process this is also not work, i absorve from 4 days resync will be 8.0% it can not modifying.
cat /proc/mdstat
Personalities : [raid1] [raid0] [raid6] [raid5] [raid4] [linear] [raid10]
md11 : active raid10 sde1[3] sdj14
286743936 blocks 64K chunks 2 near-copies [4/1] [___U] [1:2:3:0]
[=...................] resync = 8.0% (23210368/286743936) finish=289392.6min speed=15K/sec
mdadm -D /dev/md11
/dev/md11:
Version : 00.90.03
Creation Time : Sun Jan 16 16:20:01 2011
Raid Level : raid10
Array Size : 286743936 (273.46 GiB 293.63 GB)
Device Size : 143371968 (136.73 GiB 146.81 GB)
Raid Devices : 4
Total Devices : 2
Preferred Minor : 11
Persistence : Superblock is persistent
Update Time : Sun Jan 16 16:56:07 2011
State : active, degraded, resyncing
Active Devices : 1
Working Devices : 1
Failed Devices : 1
Spare Devices : 0
Layout : near=2, far=1
Chunk Size : 64K
Rebuild Status : 8% complete
UUID : 5e124ea4:79a01181:dc4110d3:a48576ea
Events : 0.23
Number Major Minor RaidDevice State
0 0 0 0 removed
1 0 0 1 removed
4 8 145 2 faulty spare rebuilding /dev/sdj1
3 8 65 3 active sync /dev/sde1
umount /dev/md11
umount: /dev/md11: not mounted
mdadm -S /dev/md11
mdadm: fail to stop array /dev/md11: Device or resource busy
lsof /dev/md11
COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME
mount 2128 root 3r BLK 9,11 4058 /dev/md11
mount 5018 root 3r BLK 9,11 4058 /dev/md11
mdadm 27605 root 3r BLK 9,11 4058 /dev/md11
mount 30562 root 3r BLK 9,11 4058 /dev/md11
badblocks 30591 root 3r BLK 9,11 4058 /dev/md11
kill -9 2128
kill -9 5018
kill -9 27605
kill -9 30562
kill -3 30591
mdadm -S /dev/md11
mdadm: fail to stop array /dev/md11: Device or resource busy
lsof /dev/md11
COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME
mount 2128 root 3r BLK 9,11 4058 /dev/md11
mount 5018 root 3r BLK 9,11 4058 /dev/md11
mdadm 27605 root 3r BLK 9,11 4058 /dev/md11
mount 30562 root 3r BLK 9,11 4058 /dev/md11
badblocks 30591 root 3r BLK 9,11 4058 /dev/md11
cat /proc/mdstat
Personalities : [raid1] [raid0] [raid6] [raid5] [raid4] [linear] [raid10]
md11 : active raid10 sde1[3] sdj14
286743936 blocks 64K chunks 2 near-copies [4/1] [___U] [1:2:3:0]
[=...................] resync = 8.0% (23210368/286743936) finish=289392.6min speed=15K/sec
