Hello fellows,
I have set up a SuSE 8.2-box with two harddrives making up a RAID1-Array,
including the root-partition on /dev/md0. The system works just fine, but
what me keeps uncomfortable is the fact that after reboot /dev/md0 works on
only one disk. Look:
cat /proc/mdstat
Personalities : [raid1]
read_ahead 1024 sectors
md0 : active raid1 hdb1[0]
5245120 blocks [2/1] [U_]
md1 : active raid1 hdb5[0] hda5[1]
5245120 blocks [2/2] [UU]
md2 : active raid1 hdb6[0] hda6[1]
15735552 blocks [2/2] [UU]
md3 : active raid1 hdb7[0] hda7[1]
5245120 blocks [2/2] [UU]
unused devices: <none>
After
raidhotadd /dev/md0 /dev/hda1
/dev/hda1 is added to the array, and after resyncing it will do its job,
but the next reboot will leave it failed again.
What can I do to make my RAID-array survive a reboot?
Thanks for hints.
Alexander
Before raidhotadd:
# mdadm -E /dev/hda1
/dev/hda1:
Magic : a92b4efc
Version : 00.90.00
UUID : 2598fd96:1021343c:b783de9d:198f6167
Creation Time : Fri Sep 12 17:42:02 2003
Raid Level : raid1
Device Size : 5245120 (5.00 GiB 5.37 GB)
Raid Devices : 2
Total Devices : 3
Preferred Minor : 0
Update Time : Mon Sep 29 15:31:47 2003
State : dirty, no-errors
Active Devices : 2
Working Devices : 2
Failed Devices : 1
Spare Devices : 0
Checksum : 2f2368bf - correct
Events : 0.106
Number Major Minor RaidDevice State
this 1 3 1 1 active sync /dev/hda1
0 0 3 65 0 active sync /dev/hdb1
1 1 3 1 1 active sync /dev/hda1
Then:
# raidhotadd /dev/md0 /dev/hda1
# mdadm -E /dev/hda1
/dev/hda1:
Magic : a92b4efc
Version : 00.90.00
UUID : 2598fd96:1021343c:b783de9d:198f6167
Creation Time : Fri Sep 12 17:42:02 2003
Raid Level : raid1
Device Size : 5245120 (5.00 GiB 5.37 GB)
Raid Devices : 2
Total Devices : 3
Preferred Minor : 0
Update Time : Wed Oct 8 16:21:39 2003
State : dirty, no-errors
Active Devices : 1
Working Devices : 2
Failed Devices : 1
Spare Devices : 1
Checksum : 2f2f51eb - correct
Events : 0.112
Number Major Minor RaidDevice State
this 2 3 1 2 /dev/hda1
0 0 3 65 0 active sync /dev/hdb1
1 1 0 0 1 faulty removed
2 2 3 1 2 /dev/hda1
# cat /proc/mdstat
Personalities : [raid1]
read_ahead 1024 sectors
md0 : active raid1 hda1[2] hdb1[0]
5245120 blocks [2/1] [U_]
[======>..............] recovery = 31.1% (1632712/5245120)
finish=1.8min speed=32243K/sec
md1 : active raid1 hdb5[0] hda5[1]
5245120 blocks [2/2] [UU]
md2 : active raid1 hdb6[0] hda6[1]
15735552 blocks [2/2] [UU]
md3 : active raid1 hdb7[0] hda7[1]
5245120 blocks [2/2] [UU]
unused devices: <none>
# cat /proc/mdstat
Personalities : [raid1]
read_ahead 1024 sectors
md0 : active raid1 hda1[1] hdb1[0]
5245120 blocks [2/2] [UU]
md1 : active raid1 hdb5[0] hda5[1]
5245120 blocks [2/2] [UU]
md2 : active raid1 hdb6[0] hda6[1]
15735552 blocks [2/2] [UU]
md3 : active raid1 hdb7[0] hda7[1]
5245120 blocks [2/2] [UU]
unused devices: <none>
# mdadm -E /dev/hda1
/dev/hda1:
Magic : a92b4efc
Version : 00.90.00
UUID : 2598fd96:1021343c:b783de9d:198f6167
Creation Time : Fri Sep 12 17:42:02 2003
Raid Level : raid1
Device Size : 5245120 (5.00 GiB 5.37 GB)
Raid Devices : 2
Total Devices : 3
Preferred Minor : 0
Update Time : Wed Oct 8 16:24:14 2003
State : dirty, no-errors
Active Devices : 2
Working Devices : 2
Failed Devices : 1
Spare Devices : 0
Checksum : 2f2f5291 - correct
Events : 0.113
Number Major Minor RaidDevice State
this 1 3 1 1 active sync /dev/hda1
0 0 3 65 0 active sync /dev/hdb1
1 1 3 1 1 active sync /dev/hda1
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