Fedora 10, software RAID weirdness
Kanwar Ranbir Sandhu
m3freak at thesandhufamily.ca
Mon Oct 12 20:07:03 UTC 2009
Hello,
I wanted to upgrade my F10 system to F11 (fresh install), but F11's
anaconda wouldn't detect my md RAID sets. I booted back into F10 and
after a bit of investigation, I discovered fdisk can't even read the
partition table of my 3 drive RAID 5 set. But, a look at /proc/mdstat
reveals md is happy.
I don't know what I should do to fix the problem. I don't have a ton of
experience with Linux RAID.
Here's the fdisk output:
[ranbir at ranbir ~]$ sudo fdisk -l
Disk /dev/sda: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000c9149
Device Boot Start End Blocks Id System
/dev/sda1 * 1 13 104391 fd Linux raid autodetect
/dev/sda2 14 121601 976655610 fd Linux raid autodetect
Disk /dev/sdb: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00000000
Disk /dev/sdb doesn't contain a valid partition table
Disk /dev/sdc: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000a00c1
Device Boot Start End Blocks Id System
/dev/sdc1 * 1 13 104391 fd Linux raid autodetect
/dev/sdc2 14 121601 976655610 fd Linux raid autodetect
Disk /dev/sdd: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00000000
Disk /dev/sdd doesn't contain a valid partition table
Disk /dev/sde: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00000000
Disk /dev/sde doesn't contain a valid partition table
Disk /dev/sdf: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00054be0
Device Boot Start End Blocks Id System
/dev/sdf1 * 1 60801 488384001 83 Linux
Drives sdb, sdd, and sde are the ones with the supposed invalid
partition tables.
Here's the md status from the kernel's point of view:
[ranbir at ranbir ~]$ cat /proc/mdstat
Personalities : [raid1] [raid6] [raid5] [raid4]
md2 : active raid5 sdb[0] sde[2] sdd[1]
976772992 blocks level 5, 64k chunk, algorithm 2 [3/3] [UUU]
md0 : active raid1 sda1[0] sdc1[1]
104320 blocks [2/2] [UU]
md1 : active raid1 sda2[0] sdc2[1]
976655488 blocks [2/2] [UU]
unused devices: <none>
Is there actually a problem? If so, how do I fix it? Although I have
backups and could conceivable wipe the entire system clean during the
F11 install, I'd much rather have the md raid sets detected so that I
may choose to keep some of my partitions (e.g. /home).
Regards,
Ranbir
--
Kanwar Ranbir Sandhu
Linux 2.6.27.35-170.2.94.fc10.x86_64 x86_64 GNU/Linux
15:57:05 up 11 min, 2 users, load average: 0.20, 0.30, 0.23
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