No md super block found ! How to forge a super block, to force a raid to start
From: Alain Spineux <hidden>
Date: 2004-01-14 19:23:41
Hello
I setup a software raid 5 device, everything was fine until 2 disk
failed
at the same time, probably the ide cable of the 2 drives got
disconected.
[root@storage root]# mdadm -Q --examine /dev/hd[ij]3
mdadm: No super block found on /dev/hdi3 (Expected magic a92b4efc, got
a82b4efc)
mdadm: No super block found on /dev/hdj3 (Expected magic a92b4efc, got
a82b4efc)
I don't know how these information get lost, I was not the first to try
to repair the raid !
I already try :
# mdadm --assemble --run --force /dev/md0 /dev/hd[aefghijkl]3
mdadm: no RAID superblock on /dev/hdi3
mdadm: /dev/hdi3 has no superblock - assembly aborted
I tried all relevant switch to force the raid to start but nothing
append !
Is it a wait to go throught the "/dev/hdi3 has no superblock"
If not, I want to forge a new super bloc using the information from
other disk, and see what append !
Here follow some information :
# fdisk -l
# cat /proc/mdstat
# cat /etc/raidtab
# mdadm -Q --examine /dev/hd[aefghijkl]3
# mdadm -Q --examine /dev/hd[aefghijkl]4
# mdadm -Q --examine /dev/hd[fhjl]1
For your information /dev/hda was a spare disk, but one failed and had
took its place.
[root@storage root]# fdisk -l
Disk /dev/hda: 255 heads, 63 sectors, 7473 cylinders
Units = cylinders of 16065 * 512 bytes
Device Boot Start End Blocks Id System
/dev/hda1 1 128 1028128+ 83 Linux
/dev/hda2 129 145 136552+ 82 Linux swap
/dev/hda3 146 3809 29431080 fd Linux raid autodetect
/dev/hda4 3810 7473 29431080 fd Linux raid autodetect
Disk /dev/hde: 16 heads, 63 sectors, 119112 cylinders
Units = cylinders of 1008 * 512 bytes
Device Boot Start End Blocks Id System
/dev/hde1 1 2040 1028128+ 83 Linux
/dev/hde2 2041 2311 136584 82 Linux swap
/dev/hde3 2312 60710 29433096 fd Linux raid autodetect
/dev/hde4 60711 119112 29434608 fd Linux raid autodetect
Disk /dev/hdf: 16 heads, 63 sectors, 119112 cylinders
Units = cylinders of 1008 * 512 bytes
Device Boot Start End Blocks Id System
/dev/hdf1 1 2040 1028128+ 83 Linux
/dev/hdf2 2041 2311 136584 82 Linux swap
/dev/hdf3 2312 60710 29433096 fd Linux raid autodetect
/dev/hdf4 60711 119112 29434608 fd Linux raid autodetect
Disk /dev/hdg: 16 heads, 63 sectors, 119112 cylinders
Units = cylinders of 1008 * 512 bytes
Device Boot Start End Blocks Id System
/dev/hdg1 1 2040 1028128+ 83 Linux
/dev/hdg2 2041 2311 136584 82 Linux swap
/dev/hdg3 2312 60710 29433096 fd Linux raid autodetect
/dev/hdg4 60711 119112 29434608 fd Linux raid autodetect
Disk /dev/hdh: 16 heads, 63 sectors, 119112 cylinders
Units = cylinders of 1008 * 512 bytes
Device Boot Start End Blocks Id System
/dev/hdh1 1 2040 1028128+ 83 Linux
/dev/hdh2 2041 2311 136584 82 Linux swap
/dev/hdh3 2312 60710 29433096 fd Linux raid autodetect
/dev/hdh4 60711 119112 29434608 fd Linux raid autodetect
Disk /dev/hdi: 16 heads, 63 sectors, 119112 cylinders
Units = cylinders of 1008 * 512 bytes
Device Boot Start End Blocks Id System
/dev/hdi1 1 2040 1028128+ 83 Linux
/dev/hdi2 2041 2311 136584 83 Linux
/dev/hdi3 2312 60710 29433096 fd Linux raid autodetect
/dev/hdi4 60711 119112 29434608 fd Linux raid autodetect
Disk /dev/hdj: 16 heads, 63 sectors, 119112 cylinders
Units = cylinders of 1008 * 512 bytes
Device Boot Start End Blocks Id System
/dev/hdj1 1 2040 1028128+ 83 Linux
/dev/hdj2 2041 2311 136584 83 Linux
/dev/hdj3 2312 60710 29433096 fd Linux raid autodetect
/dev/hdj4 60711 119112 29434608 fd Linux raid autodetect
Disk /dev/hdk: 16 heads, 63 sectors, 119112 cylinders
Units = cylinders of 1008 * 512 bytes
Device Boot Start End Blocks Id System
/dev/hdk1 1 2040 1028128+ 83 Linux
/dev/hdk2 2041 2311 136584 82 Linux swap
/dev/hdk3 2312 60710 29433096 fd Linux raid autodetect
/dev/hdk4 60711 119112 29434608 fd Linux raid autodetect
Disk /dev/hdl: 16 heads, 63 sectors, 119112 cylinders
Units = cylinders of 1008 * 512 bytes
Device Boot Start End Blocks Id System
/dev/hdl1 1 2040 1028128+ 83 Linux
/dev/hdl2 2041 2311 136584 82 Linux swap
/dev/hdl3 2312 60710 29433096 fd Linux raid autodetect
/dev/hdl4 60711 119112 29434608 fd Linux raid autodetect
[root@storage root]#
[root@storage root]#
[root@storage root]# cat /proc/mdstat
Personalities : [raid0] [raid5]
read_ahead 1024 sectors
md2 : active raid0 hdk1[3] hdi1[2] hdg1[1] hde1[0]
4112128 blocks 4k chunks
unused devices: <none>
[root@storage root]# cat /etc/raidtab
raidtab raidtab~
[root@storage root]# cat /etc/raidtab
raiddev /dev/md0
raid-level 5
nr-raid-disks 8
nr-spare-disks 1
persistent-superblock 1
parity-algorithm left-symmetric
chunk-size 32
device /dev/hde3
raid-disk 0
device /dev/hdf3
raid-disk 1
device /dev/hdg3
raid-disk 2
device /dev/hdh3
raid-disk 3
device /dev/hdi3
raid-disk 4
device /dev/hdj3
raid-disk 5
device /dev/hdk3
raid-disk 6
device /dev/hdl3
raid-disk 7
device /dev/hda3
spare-disk 0
raiddev /dev/md1
raid-level 5
nr-raid-disks 8
nr-spare-disks 1
persistent-superblock 1
parity-algorithm left-symmetric
chunk-size 32
device /dev/hde4
raid-disk 0
device /dev/hdf4
raid-disk 1
device /dev/hdg4
raid-disk 2
device /dev/hdh4
raid-disk 3
device /dev/hdi4
raid-disk 4
device /dev/hdj4
raid-disk 5
device /dev/hdk4
raid-disk 6
device /dev/hdl4
raid-disk 7
device /dev/hda4
spare-disk 0
raiddev /dev/md2
raid-level 0
nr-raid-disks 4
persistent-superblock 1
chunk-size 4
device /dev/hde1
raid-disk 0
device /dev/hdg1
raid-disk 1
device /dev/hdi1
raid-disk 2
device /dev/hdk1
raid-disk 3
#raiddev /dev/md3
# raid-level 5
# nr-raid-disks 4
# nr-spare-disks 0
# parity-algorithm left-symmetric
# persistent-superblock 1
# chunk-size 4
# device /dev/hdf1
# raid-disk 0
# device /dev/hdh1
# raid-disk 1
# device /dev/hdj1
# raid-disk 2
# device /dev/hdl1
# raid-disk 3
[root@storage root]#
[root@storage root]# mdadm -Q --examine /dev/hd[aefghijkl]3
/dev/hda3:
Magic : a92b4efc
Version : 00.90.00
UUID : af9023d1:d3110374:4d54f819:2f393aaf
Creation Time : Sun Sep 23 21:06:15 2001
Raid Level : raid5
Device Size : 29430976 (28.07 GiB 30.14 GB)
Raid Devices : 8
Total Devices : 8
Preferred Minor : 0
Update Time : Sat Dec 6 04:02:16 2003
State : dirty, no-errors
Active Devices : 8
Working Devices : 8
Failed Devices : 0
Spare Devices : 0
Checksum : 259bbb2b - correct
Events : 0.99
Layout : left-symmetric
Chunk Size : 32K
Number Major Minor RaidDevice State
this 7 3 3 7 active sync /dev/hda3
0 0 33 3 0 active sync /dev/hde3
1 1 57 67 1 active sync /dev/hdl3
2 2 34 3 2 active sync /dev/hdg3
3 3 34 67 3 active sync /dev/hdh3
4 4 56 3 4 active sync /dev/hdi3
5 5 56 67 5 active sync /dev/hdj3
6 6 57 3 6 active sync /dev/hdk3
7 7 3 3 7 active sync /dev/hda3
/dev/hde3:
Magic : a92b4efc
Version : 00.90.00
UUID : af9023d1:d3110374:4d54f819:2f393aaf
Creation Time : Sun Sep 23 21:06:15 2001
Raid Level : raid5
Device Size : 29430976 (28.07 GiB 30.14 GB)
Raid Devices : 8
Total Devices : 8
Preferred Minor : 0
Update Time : Sat Dec 6 04:02:16 2003
State : dirty, no-errors
Active Devices : 8
Working Devices : 8
Failed Devices : 0
Spare Devices : 0
Checksum : 259bbb3b - correct
Events : 0.99
Layout : left-symmetric
Chunk Size : 32K
Number Major Minor RaidDevice State
this 0 33 3 0 active sync /dev/hde3
0 0 33 3 0 active sync /dev/hde3
1 1 57 67 1 active sync /dev/hdl3
2 2 34 3 2 active sync /dev/hdg3
3 3 34 67 3 active sync /dev/hdh3
4 4 56 3 4 active sync /dev/hdi3
5 5 56 67 5 active sync /dev/hdj3
6 6 57 3 6 active sync /dev/hdk3
7 7 3 3 7 active sync /dev/hda3
/dev/hdf3:
Magic : a92b4efc
Version : 00.90.00
UUID : af9023d1:d3110374:4d54f819:2f393aaf
Creation Time : Sun Sep 23 21:06:15 2001
Raid Level : raid5
Device Size : 29430976 (28.07 GiB 30.14 GB)
Raid Devices : 8
Total Devices : 8
Preferred Minor : 0
Update Time : Wed Oct 1 17:23:54 2003
State : clean, no-errors
Active Devices : 8
Working Devices : 8
Failed Devices : 0
Spare Devices : 0
Checksum : 25456626 - correct
Events : 0.81
Layout : left-symmetric
Chunk Size : 32K
Number Major Minor RaidDevice State
this 1 33 67 1 active sync /dev/hdf3
0 0 33 3 0 active sync /dev/hde3
1 1 33 67 1 active sync /dev/hdf3
2 2 34 3 2 active sync /dev/hdg3
3 3 34 67 3 active sync /dev/hdh3
4 4 56 3 4 active sync /dev/hdi3
5 5 56 67 5 active sync /dev/hdj3
6 6 57 3 6 active sync /dev/hdk3
7 7 3 3 7 active sync /dev/hda3
/dev/hdg3:
Magic : a92b4efc
Version : 00.90.00
UUID : af9023d1:d3110374:4d54f819:2f393aaf
Creation Time : Sun Sep 23 21:06:15 2001
Raid Level : raid5
Device Size : 29430976 (28.07 GiB 30.14 GB)
Raid Devices : 8
Total Devices : 8
Preferred Minor : 0
Update Time : Sat Dec 6 04:02:16 2003
State : dirty, no-errors
Active Devices : 8
Working Devices : 8
Failed Devices : 0
Spare Devices : 0
Checksum : 259bbb40 - correct
Events : 0.99
Layout : left-symmetric
Chunk Size : 32K
Number Major Minor RaidDevice State
this 2 34 3 2 active sync /dev/hdg3
0 0 33 3 0 active sync /dev/hde3
1 1 57 67 1 active sync /dev/hdl3
2 2 34 3 2 active sync /dev/hdg3
3 3 34 67 3 active sync /dev/hdh3
4 4 56 3 4 active sync /dev/hdi3
5 5 56 67 5 active sync /dev/hdj3
6 6 57 3 6 active sync /dev/hdk3
7 7 3 3 7 active sync /dev/hda3
/dev/hdh3:
Magic : a92b4efc
Version : 00.90.00
UUID : af9023d1:d3110374:4d54f819:2f393aaf
Creation Time : Sun Sep 23 21:06:15 2001
Raid Level : raid5
Device Size : 29430976 (28.07 GiB 30.14 GB)
Raid Devices : 8
Total Devices : 8
Preferred Minor : 0
Update Time : Sat Dec 6 04:02:16 2003
State : dirty, no-errors
Active Devices : 8
Working Devices : 8
Failed Devices : 0
Spare Devices : 0
Checksum : 259bbb82 - correct
Events : 0.99
Layout : left-symmetric
Chunk Size : 32K
Number Major Minor RaidDevice State
this 3 34 67 3 active sync /dev/hdh3
0 0 33 3 0 active sync /dev/hde3
1 1 57 67 1 active sync /dev/hdl3
2 2 34 3 2 active sync /dev/hdg3
3 3 34 67 3 active sync /dev/hdh3
4 4 56 3 4 active sync /dev/hdi3
5 5 56 67 5 active sync /dev/hdj3
6 6 57 3 6 active sync /dev/hdk3
7 7 3 3 7 active sync /dev/hda3
mdadm: No super block found on /dev/hdi3 (Expected magic a92b4efc, got
a82b4efc)
mdadm: No super block found on /dev/hdj3 (Expected magic a92b4efc, got
a82b4efc)
/dev/hdk3:
Magic : a92b4efc
Version : 00.90.00
UUID : af9023d1:d3110374:4d54f819:2f393aaf
Creation Time : Sun Sep 23 21:06:15 2001
Raid Level : raid5
Device Size : 29430976 (28.07 GiB 30.14 GB)
Raid Devices : 8
Total Devices : 8
Preferred Minor : 0
Update Time : Sat Dec 6 04:02:16 2003
State : dirty, no-errors
Active Devices : 8
Working Devices : 8
Failed Devices : 0
Spare Devices : 0
Checksum : 259bbb5f - correct
Events : 0.99
Layout : left-symmetric
Chunk Size : 32K
Number Major Minor RaidDevice State
this 6 57 3 6 active sync /dev/hdk3
0 0 33 3 0 active sync /dev/hde3
1 1 57 67 1 active sync /dev/hdl3
2 2 34 3 2 active sync /dev/hdg3
3 3 34 67 3 active sync /dev/hdh3
4 4 56 3 4 active sync /dev/hdi3
5 5 56 67 5 active sync /dev/hdj3
6 6 57 3 6 active sync /dev/hdk3
7 7 3 3 7 active sync /dev/hda3
/dev/hdl3:
Magic : a92b4efc
Version : 00.90.00
UUID : af9023d1:d3110374:4d54f819:2f393aaf
Creation Time : Sun Sep 23 21:06:15 2001
Raid Level : raid5
Device Size : 29430976 (28.07 GiB 30.14 GB)
Raid Devices : 8
Total Devices : 8
Preferred Minor : 0
Update Time : Sat Dec 6 04:02:16 2003
State : dirty, no-errors
Active Devices : 8
Working Devices : 8
Failed Devices : 0
Spare Devices : 0
Checksum : 259bbb95 - correct
Events : 0.99
Layout : left-symmetric
Chunk Size : 32K
Number Major Minor RaidDevice State
this 1 57 67 1 active sync /dev/hdl3
0 0 33 3 0 active sync /dev/hde3
1 1 57 67 1 active sync /dev/hdl3
2 2 34 3 2 active sync /dev/hdg3
3 3 34 67 3 active sync /dev/hdh3
4 4 56 3 4 active sync /dev/hdi3
5 5 56 67 5 active sync /dev/hdj3
6 6 57 3 6 active sync /dev/hdk3
7 7 3 3 7 active sync /dev/hda3
[root@storage root]#
[root@storage root]#
[root@storage root]#
[root@storage root]# mdadm -Q --examine /dev/hd[aefghijkl]3
/dev/hda3:
Magic : a92b4efc
Version : 00.90.00
UUID : af9023d1:d3110374:4d54f819:2f393aaf
Creation Time : Sun Sep 23 21:06:15 2001
Raid Level : raid5
Device Size : 29430976 (28.07 GiB 30.14 GB)
Raid Devices : 8
Total Devices : 8
Preferred Minor : 0
Update Time : Sat Dec 6 04:02:16 2003
State : dirty, no-errors
Active Devices : 8
Working Devices : 8
Failed Devices : 0
Spare Devices : 0
Checksum : 259bbb2b - correct
Events : 0.99
Layout : left-symmetric
Chunk Size : 32K
Number Major Minor RaidDevice State
this 7 3 3 7 active sync /dev/hda3
0 0 33 3 0 active sync /dev/hde3
1 1 57 67 1 active sync /dev/hdl3
2 2 34 3 2 active sync /dev/hdg3
3 3 34 67 3 active sync /dev/hdh3
4 4 56 3 4 active sync /dev/hdi3
5 5 56 67 5 active sync /dev/hdj3
6 6 57 3 6 active sync /dev/hdk3
7 7 3 3 7 active sync /dev/hda3
/dev/hde3:
Magic : a92b4efc
Version : 00.90.00
UUID : af9023d1:d3110374:4d54f819:2f393aaf
Creation Time : Sun Sep 23 21:06:15 2001
Raid Level : raid5
Device Size : 29430976 (28.07 GiB 30.14 GB)
Raid Devices : 8
Total Devices : 8
Preferred Minor : 0
Update Time : Sat Dec 6 04:02:16 2003
State : dirty, no-errors
Active Devices : 8
Working Devices : 8
Failed Devices : 0
Spare Devices : 0
Checksum : 259bbb3b - correct
Events : 0.99
Layout : left-symmetric
Chunk Size : 32K
Number Major Minor RaidDevice State
this 0 33 3 0 active sync /dev/hde3
0 0 33 3 0 active sync /dev/hde3
1 1 57 67 1 active sync /dev/hdl3
2 2 34 3 2 active sync /dev/hdg3
3 3 34 67 3 active sync /dev/hdh3
4 4 56 3 4 active sync /dev/hdi3
5 5 56 67 5 active sync /dev/hdj3
6 6 57 3 6 active sync /dev/hdk3
7 7 3 3 7 active sync /dev/hda3
/dev/hdf3:
Magic : a92b4efc
Version : 00.90.00
UUID : af9023d1:d3110374:4d54f819:2f393aaf
Creation Time : Sun Sep 23 21:06:15 2001
Raid Level : raid5
Device Size : 29430976 (28.07 GiB 30.14 GB)
Raid Devices : 8
Total Devices : 8
Preferred Minor : 0
Update Time : Wed Oct 1 17:23:54 2003
State : clean, no-errors
Active Devices : 8
Working Devices : 8
Failed Devices : 0
Spare Devices : 0
Checksum : 25456626 - correct
Events : 0.81
Layout : left-symmetric
Chunk Size : 32K
Number Major Minor RaidDevice State
this 1 33 67 1 active sync /dev/hdf3
0 0 33 3 0 active sync /dev/hde3
1 1 33 67 1 active sync /dev/hdf3
2 2 34 3 2 active sync /dev/hdg3
3 3 34 67 3 active sync /dev/hdh3
4 4 56 3 4 active sync /dev/hdi3
5 5 56 67 5 active sync /dev/hdj3
6 6 57 3 6 active sync /dev/hdk3
7 7 3 3 7 active sync /dev/hda3
/dev/hdg3:
Magic : a92b4efc
Version : 00.90.00
UUID : af9023d1:d3110374:4d54f819:2f393aaf
Creation Time : Sun Sep 23 21:06:15 2001
Raid Level : raid5
Device Size : 29430976 (28.07 GiB 30.14 GB)
Raid Devices : 8
Total Devices : 8
Preferred Minor : 0
Update Time : Sat Dec 6 04:02:16 2003
State : dirty, no-errors
Active Devices : 8
Working Devices : 8
Failed Devices : 0
Spare Devices : 0
Checksum : 259bbb40 - correct
Events : 0.99
Layout : left-symmetric
Chunk Size : 32K
Number Major Minor RaidDevice State
this 2 34 3 2 active sync /dev/hdg3
0 0 33 3 0 active sync /dev/hde3
1 1 57 67 1 active sync /dev/hdl3
2 2 34 3 2 active sync /dev/hdg3
3 3 34 67 3 active sync /dev/hdh3
4 4 56 3 4 active sync /dev/hdi3
5 5 56 67 5 active sync /dev/hdj3
6 6 57 3 6 active sync /dev/hdk3
7 7 3 3 7 active sync /dev/hda3
/dev/hdh3:
Magic : a92b4efc
Version : 00.90.00
UUID : af9023d1:d3110374:4d54f819:2f393aaf
Creation Time : Sun Sep 23 21:06:15 2001
Raid Level : raid5
Device Size : 29430976 (28.07 GiB 30.14 GB)
Raid Devices : 8
Total Devices : 8
Preferred Minor : 0
Update Time : Sat Dec 6 04:02:16 2003
State : dirty, no-errors
Active Devices : 8
Working Devices : 8
Failed Devices : 0
Spare Devices : 0
Checksum : 259bbb82 - correct
Events : 0.99
Layout : left-symmetric
Chunk Size : 32K
Number Major Minor RaidDevice State
this 3 34 67 3 active sync /dev/hdh3
0 0 33 3 0 active sync /dev/hde3
1 1 57 67 1 active sync /dev/hdl3
2 2 34 3 2 active sync /dev/hdg3
3 3 34 67 3 active sync /dev/hdh3
4 4 56 3 4 active sync /dev/hdi3
5 5 56 67 5 active sync /dev/hdj3
6 6 57 3 6 active sync /dev/hdk3
7 7 3 3 7 active sync /dev/hda3
mdadm: No super block found on /dev/hdi3 (Expected magic a92b4efc, got
a82b4efc)
mdadm: No super block found on /dev/hdj3 (Expected magic a92b4efc, got
a82b4efc)
/dev/hdk3:
Magic : a92b4efc
Version : 00.90.00
UUID : af9023d1:d3110374:4d54f819:2f393aaf
Creation Time : Sun Sep 23 21:06:15 2001
Raid Level : raid5
Device Size : 29430976 (28.07 GiB 30.14 GB)
Raid Devices : 8
Total Devices : 8
Preferred Minor : 0
Update Time : Sat Dec 6 04:02:16 2003
State : dirty, no-errors
Active Devices : 8
Working Devices : 8
Failed Devices : 0
Spare Devices : 0
Checksum : 259bbb5f - correct
Events : 0.99
Layout : left-symmetric
Chunk Size : 32K
Number Major Minor RaidDevice State
this 6 57 3 6 active sync /dev/hdk3
0 0 33 3 0 active sync /dev/hde3
1 1 57 67 1 active sync /dev/hdl3
2 2 34 3 2 active sync /dev/hdg3
3 3 34 67 3 active sync /dev/hdh3
4 4 56 3 4 active sync /dev/hdi3
5 5 56 67 5 active sync /dev/hdj3
6 6 57 3 6 active sync /dev/hdk3
7 7 3 3 7 active sync /dev/hda3
/dev/hdl3:
Magic : a92b4efc
Version : 00.90.00
UUID : af9023d1:d3110374:4d54f819:2f393aaf
Creation Time : Sun Sep 23 21:06:15 2001
Raid Level : raid5
Device Size : 29430976 (28.07 GiB 30.14 GB)
Raid Devices : 8
Total Devices : 8
Preferred Minor : 0
Update Time : Sat Dec 6 04:02:16 2003
State : dirty, no-errors
Active Devices : 8
Working Devices : 8
Failed Devices : 0
Spare Devices : 0
Checksum : 259bbb95 - correct
Events : 0.99
Layout : left-symmetric
Chunk Size : 32K
Number Major Minor RaidDevice State
this 1 57 67 1 active sync /dev/hdl3
0 0 33 3 0 active sync /dev/hde3
1 1 57 67 1 active sync /dev/hdl3
2 2 34 3 2 active sync /dev/hdg3
3 3 34 67 3 active sync /dev/hdh3
4 4 56 3 4 active sync /dev/hdi3
5 5 56 67 5 active sync /dev/hdj3
6 6 57 3 6 active sync /dev/hdk3
7 7 3 3 7 active sync /dev/hda3
[root@storage root]# mdadm -Q --examine /dev/hd[fhjl]1
/dev/hdf1:
Magic : a92b4efc
Version : 00.90.00
UUID : e2b5f75f:d823083c:c60d7693:1cd9cf46
Creation Time : Sun Sep 23 21:50:03 2001
Raid Level : raid5
Device Size : 1028032 (1003.94 MiB 1052.70 MB)
Raid Devices : 4
Total Devices : 4
Preferred Minor : 3
Update Time : Wed Oct 1 17:23:54 2003
State : clean, no-errors
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0
Checksum : c22485f6 - correct
Events : 0.57
Layout : left-symmetric
Chunk Size : 4K
Number Major Minor RaidDevice State
this 0 33 65 0 active sync /dev/hdf1
0 0 33 65 0 active sync /dev/hdf1
1 1 34 65 1 active sync /dev/hdh1
2 2 56 65 2 active sync /dev/hdj1
3 3 57 65 3 active sync /dev/hdl1
/dev/hdh1:
Magic : a92b4efc
Version : 00.90.00
UUID : e2b5f75f:d823083c:c60d7693:1cd9cf46
Creation Time : Sun Sep 23 21:50:03 2001
Raid Level : raid5
Device Size : 1028032 (1003.94 MiB 1052.70 MB)
Raid Devices : 4
Total Devices : 4
Preferred Minor : 3
Update Time : Wed Oct 1 17:23:54 2003
State : clean, no-errors
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0
Checksum : c22485f9 - correct
Events : 0.57
Layout : left-symmetric
Chunk Size : 4K
Number Major Minor RaidDevice State
this 1 34 65 1 active sync /dev/hdh1
0 0 33 65 0 active sync /dev/hdf1
1 1 34 65 1 active sync /dev/hdh1
2 2 56 65 2 active sync /dev/hdj1
3 3 57 65 3 active sync /dev/hdl1
/dev/hdj1:
Magic : a92b4efc
Version : 00.90.00
UUID : e2b5f75f:d823083c:c60d7693:1cd9cf46
Creation Time : Sun Sep 23 21:50:03 2001
Raid Level : raid5
Device Size : 1028032 (1003.94 MiB 1052.70 MB)
Raid Devices : 4
Total Devices : 4
Preferred Minor : 3
Update Time : Wed Oct 1 17:23:54 2003
State : clean, no-errors
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0
Checksum : c2248611 - correct
Events : 0.57
Layout : left-symmetric
Chunk Size : 4K
Number Major Minor RaidDevice State
this 2 56 65 2 active sync /dev/hdj1
0 0 33 65 0 active sync /dev/hdf1
1 1 34 65 1 active sync /dev/hdh1
2 2 56 65 2 active sync /dev/hdj1
3 3 57 65 3 active sync /dev/hdl1
mdadm: No super block found on /dev/hdl1 (Expected magic a92b4efc, got
0d939e35)
--
Alain Spineux
Linux System Engineer
KeySource
Avenue de la Couronne 480
1050 Brussels ( Belgium )
Tel. +32-2-644.96.53 * Fax. +32-2-649.18.11