F14 - Very annoyed with software RAID setup - cannot find superblock at reboot

TC10284 · #1 20th November 2010, 05:48 PM

I recently upgrade to Fedora 14 from 13. It was an in-place upgrade. I can't recall for sure, but I do believe I had these problems in F13 before the upgrade. The F13 install was from a Live CD.

Anyway, I have a three drive RAID 5 array setup - 3x 750GB. For some very annoying reason, each time I reboot my F14 system, it hangs with an error about not being able to find a superblock on /dev/md126 and /dev/md127. I have tried to stop and remove /dev/md126 and /dev/md127 but they always seem to come back.

I have also noticed in the output of fdisk -l that drives sda and sdd like to swap places sometimes for an unknown (to me) reason.

Any other output that is needed, please ask.

I recreated the array just yesterday with:

Code:

mdadm --create --verbose /dev/md0 --level=5 --raid-devices=3 /dev/sdb1 /dev/sdc1 /dev/sdd1

I would cat mdadm.conf in /etc, but I removed it previously to try to figure out the problem and it was not recreated apparently.

Code:

[root@fileserver3 ~]# cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4] 
md126 : inactive sda1[0]
      732572536 blocks super 1.2
       
md127 : inactive sdc[3]
      732573560 blocks super 1.2
       
unused devices: <none>
[root@fileserver3 ~]#

Code:

[root@fileserver3 ~]# fdisk -l | more

Disk /dev/sda: 750.2 GB, 750156374016 bytes
81 heads, 63 sectors/track, 287115 cylinders, total 1465149168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1            2048  1465149167   732573560   83  Linux

Disk /dev/sdb: 750.2 GB, 750156374016 bytes
81 heads, 63 sectors/track, 287115 cylinders, total 1465149168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1            2048  1465149167   732573560   83  Linux

Disk /dev/sdc: 750.2 GB, 750156374016 bytes
81 heads, 63 sectors/track, 287115 cylinders, total 1465149168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id  System
/dev/sdc1            2048  1465149167   732573560   83  Linux

Disk /dev/sdd: 41.1 GB, 41110142976 bytes
255 heads, 63 sectors/track, 4998 cylinders, total 80293248 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x90909090

   Device Boot      Start         End      Blocks   Id  System
/dev/sdd1   *          63      208844      104391   83  Linux
/dev/sdd2          208845     4401809     2096482+  82  Linux swap / Solaris
/dev/sdd3         4401810    80291839    37945015   83  Linux

This is what is in /etc/fstab:

Code:

/dev/md0		/mnt/raid5	ext4	defaults		1 2

lspci output:

Code:

[root@fileserver3 ~]# lspci
00:00.0 Host bridge: VIA Technologies, Inc. VT82C693A/694x [Apollo PRO133x] (rev c4)
00:01.0 PCI bridge: VIA Technologies, Inc. VT82C598/694x [Apollo MVP3/Pro133x AGP]
00:07.0 ISA bridge: VIA Technologies, Inc. VT82C686 [Apollo Super South] (rev 40)
00:07.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06)
00:07.4 Bridge: VIA Technologies, Inc. VT82C686 [Apollo Super ACPI] (rev 40)
00:07.5 Multimedia audio controller: VIA Technologies, Inc. VT82C686 AC97 Audio Controller (rev 50)
00:0b.0 Mass storage controller: Promise Technology, Inc. PDC40718 (SATA 300 TX4) (rev 02)
00:0c.0 Ethernet controller: Intel Corporation 82541PI Gigabit Ethernet Controller (rev 05)
00:0d.0 USB Controller: ALi Corporation USB 1.1 Controller (rev 03)
00:0d.1 USB Controller: ALi Corporation USB 1.1 Controller (rev 03)
00:0d.2 USB Controller: ALi Corporation USB 1.1 Controller (rev 03)
00:0d.3 USB Controller: ALi Corporation USB 2.0 Controller (rev 01)
00:0d.4 FireWire (IEEE 1394): ALi Corporation M5253 P1394 OHCI 1.1 Controller
01:00.0 VGA compatible controller: nVidia Corporation NV11 [GeForce2 MX/MX 400] (rev a1)

What can I do to fix this? The array operates properly until you reboot the system.

TC10284 · #2 21st November 2010, 04:38 PM

Does anyone have any suggestion for this?