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need help, possibly shred my array, no backups, debian install issue | |
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wanted to migrate the raid server from slack to debain, installed etch on a
stand alone disk, not the array.
installed mdadm, asked me a couple of questions. then for reasons beyond me
tried and assembled.
I got no clue how debian figured the mdadm.conf, I didn't write one.
so I stopped that array and had a look at the mdadm -E data, which are odd, my
old mdadm.conf in slackware used these two lines:
DEVICE /dev/sd[abcd]1
ARRAY /dev/md0 UUID=7f103422:7be2c2ce:e67a70be:112a2914
now in mdadm -E /dev/sda I get this:
(note: /dev/sda, should be sda1 but mdadm -E /dev/sda1 doesn't give me
anything at all but an error)
# mdadm -E /dev/sda
/dev/sda:
Magic : a92b4efc
Version : 00.90.02
UUID : db7e5b65:e35c69dc:7c267a5a:e676c929
Creation Time : Mon May 8 00:05:16 2006
Raid Level : raid5
Device Size : 244198464 (232.89 GiB 250.06 GB)
Array Size : 732595392 (698.66 GiB 750.18 GB)
Raid Devices : 4
Total Devices : 4
Preferred Minor : 0
Update Time : Tue May 9 00:43:46 2006
State : clean
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0
Checksum : 61f0ffc4 - correct
Events : 0.24796
Layout : left-symmetric
Chunk Size : 32K
Number Major Minor RaidDevice State
this 2 8 32 2 active sync /dev/sdc
0 0 8 0 0 active sync /dev/sda
1 1 8 16 1 active sync /dev/sdb
2 2 8 32 2 active sync /dev/sdc
3 3 8 48 3 active sync /dev/sdd
# mdadm -E /dev/sdb
/dev/sdb:
Magic : a92b4efc
Version : 00.90.02
UUID : db7e5b65:e35c69dc:7c267a5a:e676c929
Creation Time : Mon May 8 00:05:16 2006
Raid Level : raid5
Device Size : 244198464 (232.89 GiB 250.06 GB)
Array Size : 732595392 (698.66 GiB 750.18 GB)
Raid Devices : 4
Total Devices : 4
Preferred Minor : 0
Update Time : Tue May 9 00:43:46 2006
State : clean
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0
Checksum : 61f0ffd6 - correct
Events : 0.24796
Layout : left-symmetric
Chunk Size : 32K
Number Major Minor RaidDevice State
this 3 8 48 3 active sync /dev/sdd
0 0 8 0 0 active sync /dev/sda
1 1 8 16 1 active sync /dev/sdb
2 2 8 32 2 active sync /dev/sdc
3 3 8 48 3 active sync /dev/sdd
# mdadm -E /dev/sdc
/dev/sdc:
Magic : a92b4efc
Version : 00.90.02
UUID : db7e5b65:e35c69dc:7c267a5a:e676c929
Creation Time : Mon May 8 00:05:16 2006
Raid Level : raid5
Device Size : 244198464 (232.89 GiB 250.06 GB)
Array Size : 732595392 (698.66 GiB 750.18 GB)
Raid Devices : 4
Total Devices : 4
Preferred Minor : 0
Update Time : Tue May 9 00:43:46 2006
State : clean
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0
Checksum : 61f0ffb2 - correct
Events : 0.24796
Layout : left-symmetric
Chunk Size : 32K
Number Major Minor RaidDevice State
this 1 8 16 1 active sync /dev/sdb
0 0 8 0 0 active sync /dev/sda
1 1 8 16 1 active sync /dev/sdb
2 2 8 32 2 active sync /dev/sdc
3 3 8 48 3 active sync /dev/sdd
# mdadm -E /dev/sdd
/dev/sdd:
Magic : a92b4efc
Version : 00.90.02
UUID : 7f103422:7be2c2ce:e67a70be:112a2914
Creation Time : Tue May 9 01:11:41 2006
Raid Level : raid5
Device Size : 244187904 (232.88 GiB 250.05 GB)
Array Size : 732563712 (698.63 GiB 750.15 GB)
Raid Devices : 4
Total Devices : 4
Preferred Minor : 0
Update Time : Mon Jun 18 14:43:49 2007
State : clean
Active Devices : 3
Working Devices : 4
Failed Devices : 0
Spare Devices : 1
Checksum : 354955e4 - correct
Events : 0.1102278
Layout : left-symmetric
Chunk Size : 32K
Number Major Minor RaidDevice State
this 4 8 48 4 spare /dev/sdd
0 0 0 0 0 removed
1 1 8 33 1 active sync /dev/.static/dev/sdc1
2 2 8 1 2 active sync /dev/.static/dev/sda1
3 3 8 17 3 active sync /dev/.static/dev/sdb1
4 4 8 48 4 spare /dev/sdd
The only proper UUID is on sdd and there it says its confed as spare.
ANY help appreciated
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