with all necessary modules compiled in running raid5 on /home (etx3)
with 3 20 Gb IBM ide-disks. It's been running fine for years.
Problem: I would like to upgrade to the newest kernel for security
reasons, but I get the following error when tring to boot kernel 2.4.24
-------------------------------------------------------------------------
" The superblock could not be read or does not describe a correct ext2
filesystem. If the device is valid and it really contains an ext2
filesystem then the superblock is corrupt and you might try running
e2fsck with an alternate superblock
e2fsck -b 8193 <device>
fsck.ext3: invalid argument while trying to open /dev/md0"
--------------------------------------------------------------------------
But the superblock is ok.
Have something changed in recent kernels?
Should I create a new raid with 2.4.24 and put data back from backup or what?
Forgive me if I'm being plain stupid.
Hans Otto Lunde
Denmark
Here are some listings done when running 2.4.18 with active /dev/md0.
[root@ns root]# cat /etc/raidtab
raiddev /dev/md0
raid-level 5
nr-raid-disks 3
chunk-size 64k
persistent-superblock 1
nr-spare-disks 0
device /dev/hdc1
raid-disk 0
device /dev/hde1
raid-disk 1
device /dev/hdg1
raid-disk 2
-------------------------------------------------------------
mdadm --misc -E /dev/hdc
/dev/hdc:
Magic : a92b4efc
Version : 00.90.00
UUID : 29f52295:6e5e40bc:f513abc1:c01af7c8
Creation Time : Mon Oct 30 03:29:09 2000
Raid Level : raid5
Device Size : 20066176 (19.13 GiB 20.54 GB)
Raid Devices : 3
Total Devices : 3
Preferred Minor : 0
Update Time : Wed Mar 13 16:45:20 2002
State : dirty, no-errors
Active Devices : 3
Working Devices : 3
Failed Devices : 0
Spare Devices : 0
Checksum : 6e6dd84b - correct
Events : 0.147
Layout : left-symmetric
Chunk Size : 128K
Number Major Minor RaidDevice State
this 0 22 0 0 active sync /dev/hdc
0 0 22 0 0 active sync /dev/hdc
1 1 33 0 1 active sync /dev/hde
2 2 34 0 2 active sync /dev/hdg
-------------------------------------------------------------
mdadm --misc -E /dev/hde
/dev/hde:
Magic : a92b4efc
Version : 00.90.00
UUID : 29f52295:6e5e40bc:f513abc1:c01af7c8
Creation Time : Mon Oct 30 03:29:09 2000
Raid Level : raid5
Device Size : 20066176 (19.13 GiB 20.54 GB)
Raid Devices : 3
Total Devices : 2
Preferred Minor : 0
Update Time : Fri Mar 22 13:41:30 2002
State : dirty, no-errors
Active Devices : 1
Working Devices : 1
Failed Devices : 1
Spare Devices : 0
Checksum : 6e798a81 - correct
Events : 0.206
Layout : left-symmetric
Chunk Size : 128K
Number Major Minor RaidDevice State
this 1 33 0 1 active sync /dev/hde
0 0 0 0 0 faulty removed
1 1 33 0 1 active sync /dev/hde
2 2 34 0 2 faulty /dev/hdg
-------------------------------------------------------------
mdadm --misc -E /dev/hdg
/dev/hdg:
Magic : a92b4efc
Version : 00.90.00
UUID : 29f52295:6e5e40bc:f513abc1:c01af7c8
Creation Time : Mon Oct 30 03:29:09 2000
Raid Level : raid5
Device Size : 20066176 (19.13 GiB 20.54 GB)
Raid Devices : 3
Total Devices : 2
Preferred Minor : 0
Update Time : Fri Mar 22 12:37:16 2002
State : dirty, no-errors
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
Checksum : 6e797b7b - correct
Events : 0.205
Layout : left-symmetric
Chunk Size : 128K
Number Major Minor RaidDevice State
this 2 34 0 2 active sync /dev/hdg
0 0 0 0 0 faulty removed
1 1 33 0 1 active sync /dev/hde
2 2 34 0 2 active sync /dev/hdg
-------------------------------------------------------------
mdadm --misc -D /dev/md0
/dev/md0:
Version : 00.90.00
Creation Time : Fri Mar 29 23:11:20 2002
Raid Level : raid5
Array Size : 40131200 (38.27 GiB 41.09 GB)
Device Size : 20065600 (19.13 GiB 20.54 GB)
Raid Devices : 3
Total Devices : 3
Preferred Minor : 0
Persistence : Superblock is persistent
Update Time : Thu Feb 5 00:10:11 2004
State : dirty, no-errors
Active Devices : 3
Working Devices : 3
Failed Devices : 0
Spare Devices : 0
Layout : left-asymmetric
Chunk Size : 64K
Number Major Minor RaidDevice State
0 22 1 0 active sync /dev/hdc1
1 33 1 1 active sync /dev/hde1
2 34 1 2 active sync /dev/hdg1
UUID : c7330fe7:a2728c71:411b051f:e93f4d07
- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
