Well, the block sizes are back to 32k now, but I still had no luck
mounting /dev/md0 once I created the array. below is a record of what I
just tried:
how safe should the following be?
mdadm --assemble /dev/md0 --uuid=8fe1fe85:eeb90460:c525faab:cdaab792
/dev/etherd/e0.[01234]
I am *really* not interested in making my situation worse.
-- Jonathan
hazel /virtual # mdadm -C /dev/md0 -c 32 -n 4 -l 5 missing
/dev/etherd/e0.[023]
mdadm: /dev/etherd/e0.0 appears to be part of a raid array:
level=5 devices=4 ctime=Fri Apr 21 22:56:18 2006
mdadm: /dev/etherd/e0.2 appears to be part of a raid array:
level=5 devices=4 ctime=Fri Apr 21 22:56:18 2006
mdadm: /dev/etherd/e0.3 appears to contain an ext2fs file system
size=720300416K mtime=Wed Oct 5 16:39:28 2005
mdadm: /dev/etherd/e0.3 appears to be part of a raid array:
level=5 devices=4 ctime=Fri Apr 21 22:56:18 2006
Continue creating array? y
mdadm: array /dev/md0 started.
hazel /virtual # cat /proc/mdstat
Personalities : [raid5]
md1 : active raid5 etherd/e0.9[4] etherd/e0.8[3] etherd/e0.7[2]
etherd/e0.6[1] etherd/e0.5[0]
586082688 blocks level 5, 32k chunk, algorithm 0 [4/4] [UUUU]
md0 : active raid5 etherd/e0.3[3] etherd/e0.2[2] etherd/e0.0[1]
586082688 blocks level 5, 32k chunk, algorithm 2 [4/3] [_UUU]
unused devices: <none>
hazel /virtual # mount -t ext2 -r /dev/md0 /md0
mount: wrong fs type, bad option, bad superblock on /dev/md0,
or too many mounted file systems
hazel /virtual # mdadm -S /dev/md0
hazel /virtual # cat /proc/mdstat
Personalities : [raid5]
md1 : active raid5 etherd/e0.9[4] etherd/e0.8[3] etherd/e0.7[2]
etherd/e0.6[1] etherd/e0.5[0]
586082688 blocks level 5, 32k chunk, algorithm 0 [4/4] [UUUU]
unused devices: <none>
hazel /virtual # mdadm -E /dev/etherd/e0.[01234]
/dev/etherd/e0.0:
Magic : a92b4efc
Version : 00.90.02
UUID : 518b5d59:44292ca3:6c358813:c6f00804
Creation Time : Sat Apr 22 13:25:40 2006
Raid Level : raid5
Device Size : 195360896 (186.31 GiB 200.05 GB)
Raid Devices : 4
Total Devices : 3
Preferred Minor : 0
Update Time : Sat Apr 22 13:25:40 2006
State : clean
Active Devices : 3
Working Devices : 3
Failed Devices : 0
Spare Devices : 0
Checksum : 6aaa56f - correct
Events : 0.3493635
Layout : left-symmetric
Chunk Size : 32K
Number Major Minor RaidDevice State
this 1 152 0 1 active sync /dev/etherd/e0.0
0 0 0 0 0 removed
1 1 152 0 1 active sync /dev/etherd/e0.0
2 2 152 32 2 active sync /dev/etherd/e0.2
3 3 152 48 3 active sync /dev/etherd/e0.3
/dev/etherd/e0.1:
Magic : a92b4efc
Version : 00.90.00
UUID : 8fe1fe85:eeb90460:c525faab:cdaab792
Creation Time : Mon Jan 3 03:16:48 2005
Raid Level : raid5
Device Size : 195360896 (186.31 GiB 200.05 GB)
Raid Devices : 4
Total Devices : 5
Preferred Minor : 0
Update Time : Fri Apr 21 14:03:12 2006
State : clean
Active Devices : 2
Working Devices : 3
Failed Devices : 3
Spare Devices : 1
Checksum : 4cc991d7 - correct
Events : 0.3493633
Layout : left-asymmetric
Chunk Size : 32K
Number Major Minor RaidDevice State
this 4 152 16 4 spare /dev/etherd/e0.1
0 0 0 0 0 removed
1 1 0 0 1 faulty removed
2 2 152 32 2 active sync /dev/etherd/e0.2
3 3 152 48 3 active sync /dev/etherd/e0.3
4 4 152 16 4 spare /dev/etherd/e0.1
/dev/etherd/e0.2:
Magic : a92b4efc
Version : 00.90.02
UUID : 518b5d59:44292ca3:6c358813:c6f00804
Creation Time : Sat Apr 22 13:25:40 2006
Raid Level : raid5
Device Size : 195360896 (186.31 GiB 200.05 GB)
Raid Devices : 4
Total Devices : 3
Preferred Minor : 0
Update Time : Sat Apr 22 13:25:40 2006
State : clean
Active Devices : 3
Working Devices : 3
Failed Devices : 0
Spare Devices : 0
Checksum : 6aaa591 - correct
Events : 0.3493635
Layout : left-symmetric
Chunk Size : 32K
Number Major Minor RaidDevice State
this 2 152 32 2 active sync /dev/etherd/e0.2
0 0 0 0 0 removed
1 1 152 0 1 active sync /dev/etherd/e0.0
2 2 152 32 2 active sync /dev/etherd/e0.2
3 3 152 48 3 active sync /dev/etherd/e0.3
/dev/etherd/e0.3:
Magic : a92b4efc
Version : 00.90.02
UUID : 518b5d59:44292ca3:6c358813:c6f00804
Creation Time : Sat Apr 22 13:25:40 2006
Raid Level : raid5
Device Size : 195360896 (186.31 GiB 200.05 GB)
Raid Devices : 4
Total Devices : 3
Preferred Minor : 0
Update Time : Sat Apr 22 13:25:40 2006
State : clean
Active Devices : 3
Working Devices : 3
Failed Devices : 0
Spare Devices : 0
Checksum : 6aaa5a3 - correct
Events : 0.3493635
Layout : left-symmetric
Chunk Size : 32K
Number Major Minor RaidDevice State
this 3 152 48 3 active sync /dev/etherd/e0.3
0 0 0 0 0 removed
1 1 152 0 1 active sync /dev/etherd/e0.0
2 2 152 32 2 active sync /dev/etherd/e0.2
3 3 152 48 3 active sync /dev/etherd/e0.3
/dev/etherd/e0.4:
Magic : a92b4efc
Version : 00.90.00
UUID : 8fe1fe85:eeb90460:c525faab:cdaab792
Creation Time : Mon Jan 3 03:16:48 2005
Raid Level : raid5
Device Size : 195360896 (186.31 GiB 200.05 GB)
Raid Devices : 4
Total Devices : 5
Preferred Minor : 0
Update Time : Thu Apr 20 21:07:50 2006
State : clean
Active Devices : 4
Working Devices : 5
Failed Devices : 0
Spare Devices : 1
Checksum : 4cc84d59 - correct
Events : 0.3482550
Layout : left-asymmetric
Chunk Size : 32K
Number Major Minor RaidDevice State
this 0 152 64 0 active sync /dev/etherd/e0.4
0 0 152 64 0 active sync /dev/etherd/e0.4
1 1 152 0 1 active sync /dev/etherd/e0.0
2 2 152 32 2 active sync /dev/etherd/e0.2
3 3 152 48 3 active sync /dev/etherd/e0.3
4 4 152 16 4 spare /dev/etherd/e0.1
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