ITzoo.de - Admin-FAQ

Raid-Status

/proc/mdstat

# cat /proc/mdstat
Personalities : [raid1]
md1 : active raid1 sda2[0]
488287552 blocks [2/1] [U_]
md0 : active raid1 sda1[0] sdb1[1]
96256 blocks [2/2] [UU]
unused devices: 

### Rebuilding Raid ###

# cat /proc/mdstat
Personalities : [raid1]
md1 : active raid1 sdb2[2] sda2[0]
488287552 blocks [2/1] [U_]
[==>..................]  recovery = 11.2% (54708032/488287552) finish=184.1min speed=39232K/sec
md0 : active raid1 sda1[0] sdb1[1]
96256 blocks [2/2] [UU]
unused devices: 

mdadm

# mdadm -D /dev/md1
/dev/md1:
Version : 00.90.03
Creation Time : Tue Apr 29 13:30:21 2008
Raid Level : raid1
Array Size : 488287552 (465.67 GiB 500.01 GB)
Device Size : 488287552 (465.67 GiB 500.01 GB)
Raid Devices : 2
Total Devices : 1
Preferred Minor : 1
Persistence : Superblock is persistent
Update Time : Sat Oct 25 10:11:18 2008
State : clean, degraded
Active Devices : 1
Working Devices : 1
Failed Devices : 0
Spare Devices : 0
UUID : acb550c9:c648ea38:73f261ab:0bdd2dd3
Events : 0.5651146
Number   Major   Minor   RaidDevice State
0       8        2        0      active sync   /dev/sda2
1       0        0        1      removed

### Rebuilding Raid ###

# mdadm -D /dev/md1
/dev/md1:
Version : 00.90.03
Creation Time : Tue Apr 29 13:30:21 2008
Raid Level : raid1
Array Size : 488287552 (465.67 GiB 500.01 GB)
Device Size : 488287552 (465.67 GiB 500.01 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 1
Persistence : Superblock is persistent
Update Time : Sat Oct 25 10:12:15 2008
State : clean, degraded, recovering
Active Devices : 1
Working Devices : 2
Failed Devices : 0
Spare Devices : 1
Rebuild Status : 0% complete
UUID : acb550c9:c648ea38:73f261ab:0bdd2dd3
Events : 0.5651176
Number   Major   Minor   RaidDevice State
0       8        2        0      active sync   /dev/sda2
2       8       18        1      spare rebuilding   /dev/sdb2

Raid-Rebuild (Platte zu Verbund hinzufügen)

# mdadm --add /dev/md1 /dev/sdb2
mdadm: re-added /dev/sdb2