I was expecting the RAID system to blow up so I saved the scroll-back of
the terminal. This is the state of the disk subsystem and RAID info
prior to rebooting. Of particular note, /dev/md0p1 is marked as Linux
Raid Autodetect but it's supposed to be an LVM partition!
$ ssh root@newbox
Linux newbox 3.0.0-32-server #51~lucid1-Ubuntu SMP Fri Mar 22 17:53:04 UTC 2013
x86_64 GNU/Linux
Ubuntu 10.04.4 LTS
Welcome to the Ubuntu Server!
* Documentation: http://www.ubuntu.com/server/doc
System information as of Wed Jun 12 10:08:23 CDT 2013
System load: 0.15 Processes: 171
Usage of /home: 0.8% of 3.99GB Users logged in: 0
Memory usage: 0% IP address for eth0: 10.140.136.41
Swap usage: 0%
Graph this data and manage this system at
https://landscape.canonical.com/
18 packages can be updated.
11 updates are security updates.
New release 'precise' available.
Run 'do-release-upgrade' to upgrade to it.
Last login: Wed Jun 12 10:07:11 2013
# screen -x
[detached from 1306.tty1.newbox]
# fdisk -l
Disk /dev/sda: 60.0 GB, 60022480896 bytes
32 heads, 32 sectors/track, 114483 cylinders
Units = cylinders of 1024 * 512 = 524288 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000cb60c
Device Boot Start End Blocks Id System
/dev/sda1 1 114484 58615640 fd Linux raid autodetect
Disk /dev/sdb: 60.0 GB, 60022480896 bytes
32 heads, 32 sectors/track, 114483 cylinders
Units = cylinders of 1024 * 512 = 524288 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000da964
Device Boot Start End Blocks Id System
/dev/sdb1 1 114484 58615640 fd Linux raid autodetect
Disk /dev/sdc: 1000.0 GB, 999989182464 bytes
255 heads, 63 sectors/track, 121575 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000c3b74
Device Boot Start End Blocks Id System
/dev/sdc1 * 1 262 2104483+ 83 Linux
/dev/sdc2 263 2352 16787925 82 Linux swap / Solaris
/dev/sdc3 2353 121575 957658747+ 8e Linux LVM
Disk /dev/md0: 60.0 GB, 60022325248 bytes
32 heads, 32 sectors/track, 114483 cylinders
Units = cylinders of 1024 * 512 = 524288 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000cb60c
Device Boot Start End Blocks Id System
/dev/md0p1 1 114484 58615640 fd Linux raid autodetect
# pvs
PV VG Fmt Attr PSize PFree
/dev/md0p1 vgssd lvm2 a- 55.90g 20.90g
/dev/sdc3 vgsata lvm2 a- 913.29g 849.29g
# lvs
LV VG Attr LSize Origin Snap% Move Log Copy% Convert
home vgsata -wi-ao 4.00g
mysql.bak vgsata -wi-ao 10.00g
sysbak vgsata -wi-a- 50.00g
mysqldump vgssd -wi-ao 10.00g
usr vgssd -wi-ao 5.00g
var vgssd -wi-ao 20.00g
# mdadm -E --scan
ARRAY /dev/md0 level=raid1 num-devices=2
UUID=8035e4aa:c77c9788:e368bf24:bd0fce41
# cat /etc/mdadm/mdadm.conf
DEVICE partitions
CREATE owner=root group=disk mode=0660 auto=yes
HOMEHOST <system>
MAILADDR root
# This file was auto-generated on Mon, 29 Apr 2013 15:25:47 -0500
# by mkconf $Id$
ARRAY /dev/md0 level=raid1 num-devices=2
UUID=8035e4aa:c77c9788:e368bf24:bd0fce41
# mdadm --examine /dev/sda1
/dev/sda1:
Magic : a92b4efc
Version : 00.90.00
UUID : 8035e4aa:c77c9788:e368bf24:bd0fce41
Creation Time : Thu May 9 09:21:34 2013
Raid Level : raid1
Used Dev Size : 58615552 (55.90 GiB 60.02 GB)
Array Size : 58615552 (55.90 GiB 60.02 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 0
Update Time : Wed Jun 12 10:10:19 2013
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
Checksum : 381900d2 - correct
Events : 41
Number Major Minor RaidDevice State
this 0 8 0 0 active sync /dev/sda
0 0 8 0 0 active sync /dev/sda
1 1 8 16 1 active sync /dev/sdb
# mdadm --examine /dev/sdb1
/dev/sdb1:
Magic : a92b4efc
Version : 00.90.00
UUID : 8035e4aa:c77c9788:e368bf24:bd0fce41
Creation Time : Thu May 9 09:21:34 2013
Raid Level : raid1
Used Dev Size : 58615552 (55.90 GiB 60.02 GB)
Array Size : 58615552 (55.90 GiB 60.02 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 0
Update Time : Wed Jun 12 10:10:19 2013
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
Checksum : 381900e4 - correct
Events : 41
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
# cat /proc/mdstat
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4]
[raid10]
md0 : active raid1 sdb[1] sda[0]
58615552 blocks [2/2] [UU]
unused devices: <none>
# reboot
** Package changed: partman-base (Ubuntu) => mdadm (Ubuntu)
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https://bugs.launchpad.net/bugs/1190295
Title:
latest 10.04 kernel update breaks software RAID + LVM
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/mdadm/+bug/1190295/+subscriptions
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