I made the 3 devices faulty. I wonder why it's still clean
and --test says it's functionning normally?!
Same here with a RAID1 when I kill the last disk.
Additionally, when I try to remove one of these faulty devices and add it again,
THEN i get some indication that the array is not so good anymore:
# mdadm /dev/md1 -r /dev/sdd2
mdadm: hot removed /dev/sdd2
# mdadm /dev/md1 -a /dev/sdd2
mdadm: cannot find valid superblock in this array - HELP
I got the same exact message when I tried with the 3 drives, obviously it is
because the array is no longer there... and a final output of several programs
give the output below. Stoping the array prevents me from starting it again.
Assembling fails too (not enough disk to start the array):
mdadm: /dev/sdd2 is identified as a member of /dev/md1, slot 3.
mdadm: /dev/sdb2 is identified as a member of /dev/md1, slot 2.
mdadm: /dev/sdc2 is identified as a member of /dev/md1, slot 1.
mdadm: no uptodate device for slot 0 of /dev/md1
mdadm: added /dev/sdc2 to /dev/md1 as 1
mdadm: added /dev/sdd2 to /dev/md1 as 3
mdadm: added /dev/sdb2 to /dev/md1 as 2
mdadm: /dev/md1 assembled from 1 drive and 1 spare - not enough to start the array.
(or with -R, ends with)
mdadm: failed to RUN_ARRAY /dev/md1: Input/output error
mdadm: Not enough devices to start the array.
===(`/sbin/mdadm -v -v --detail /dev/md1`)======================================
/dev/md1:
Version : 00.90.03
Creation Time : Tue Jul 3 16:29:38 2007
Raid Level : raid5
Array Size : 2011648 (1964.83 MiB 2059.93 MB)
Used Dev Size : 1005824 (982.41 MiB 1029.96 MB)
Raid Devices : 3
Total Devices : 0
Preferred Minor : 1
Persistence : Superblock is persistent
Update Time : Thu Jul 5 11:25:32 2007
State : clean, degraded
Active Devices : 0
Working Devices : 0
Failed Devices : 0
Spare Devices : 0
Layout : left-symmetric
Chunk Size : 64K
Number Major Minor RaidDevice State
0 0 0 0 removed
1 0 0 1 removed
2 0 0 2 removed
------------------------- Return was: 0 ---[ 0 = running | 256 = inactive ]---
===(`/sbin/lsraid -a /dev/md1`)=================================================
[dev 9, 1] /dev/md1 00000000.00000000.00000000.00000000 online
[dev ?, ?] (unknown) 00000000.00000000.00000000.00000000 missing
[dev ?, ?] (unknown) 00000000.00000000.00000000.00000000 missing
[dev ?, ?] (unknown) 00000000.00000000.00000000.00000000 missing
------------------------------------------------------------ Return was: 0 ---
Return from `/sbin/mdadm /dev/md1 --detail --test` gave:
mdadm: The array is functioning normally.
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