Public bug reported:
For some reason, a functioning RAID1 array that contains a RAID0 array
as a member does not properly assemble after rebooting.
Before rebooting, when everything is running fine, this is what
/proc/mdstat looks like:
rune@rune-desktop:~$ cat /proc/mdstat
Personalities : [raid0] [linear] [multipath] [raid1] [raid6] [raid5]
[raid4] [raid10]
md0 : active raid0 sdd1[1] sdc1[0]
1953522688 blocks super 1.2 512k chunks
md2 : active raid1 md0[2] sdb1[0]
1953382488 blocks super 1.2 [2/2] [UU]
unused devices: <none>
After rebooting it looks like this:
rune@rune-desktop:~$ cat /proc/mdstat
Personalities : [raid0] [linear] [multipath] [raid1] [raid6] [raid5]
[raid4] [raid10]
md0 : active raid0 sdd1[1] sdc1[0]
1953522688 blocks super 1.2 512k chunks
md2 : active (auto-read-only) raid1 sdb1[0]
1953382488 blocks super 1.2 [2/1] [U_]
unused devices: <none>
This can be fixed by running:
sudo mdadm /dev/md2 --add /dev/md0
But I'd rather not have to do this upon every reboot.
ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: mdadm 3.2.5-5ubuntu2
ProcVersionSignature: Ubuntu 3.8.0-29.42-generic 3.8.13.5
Uname: Linux 3.8.0-29-generic x86_64
ApportVersion: 2.9.2-0ubuntu8.3
Architecture: amd64
Date: Tue Aug 27 14:30:03 2013
EcryptfsInUse: Yes
InstallationDate: Installed on 2012-06-09 (443 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64
(20120425)
MDadmExamine.dev.sda:
/dev/sda:
MBR Magic : aa55
Partition[0] : 41943040 sectors at 1024 (type 83)
Partition[1] : 110162944 sectors at 41944064 (type 83)
Partition[2] : 4194304 sectors at 152107008 (type 82)
MDadmExamine.dev.sda1: Error: command ['/sbin/mdadm', '-E', '/dev/sda1'] failed
with exit code 1: mdadm: No md superblock detected on /dev/sda1.
MDadmExamine.dev.sda2: Error: command ['/sbin/mdadm', '-E', '/dev/sda2'] failed
with exit code 1: mdadm: No md superblock detected on /dev/sda2.
MDadmExamine.dev.sda3: Error: command ['/sbin/mdadm', '-E', '/dev/sda3'] failed
with exit code 1: mdadm: No md superblock detected on /dev/sda3.
MDadmExamine.dev.sdb:
/dev/sdb:
MBR Magic : aa55
Partition[0] : 3907027120 sectors at 2048 (type 83)
MDadmExamine.dev.sdc:
/dev/sdc:
MBR Magic : aa55
Partition[0] : 1953523120 sectors at 2048 (type 83)
MDadmExamine.dev.sdd:
/dev/sdd:
MBR Magic : aa55
Partition[0] : 1953523120 sectors at 2048 (type 83)
MDadmExamine.dev.sde:
/dev/sde:
MBR Magic : aa55
Partition[0] : 500118129 sectors at 63 (type 83)
MDadmExamine.dev.sde1: Error: command ['/sbin/mdadm', '-E', '/dev/sde1'] failed
with exit code 1: mdadm: No md superblock detected on /dev/sde1.
MachineType: . .
MarkForUpload: True
ProcEnviron:
LANGUAGE=en_US:en
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-29-generic
root=UUID=53d93e82-bd1a-4b17-b657-d8694c5adb68 ro quiet splash vt.handoff=7
SourcePackage: mdadm
UpgradeStatus: Upgraded to raring on 2013-05-03 (115 days ago)
dmi.bios.date: 05/26/2008
dmi.bios.vendor: Phoenix Technologies, LTD
dmi.bios.version: 6.00 PG
dmi.board.name: IP35 Pro XE(Intel P35-ICH9R)
dmi.board.vendor: http://www.abit.com.tw/
dmi.board.version: 1.0
dmi.chassis.type: 3
dmi.chassis.vendor: System Enclosure Manufacter
dmi.chassis.version: OEM
dmi.modalias:
dmi:bvnPhoenixTechnologies,LTD:bvr6.00PG:bd05/26/2008:svn.:pn.:pvrSystemVersion:rvnhttp//www.abit.com.tw/:rnIP35ProXE(IntelP35-ICH9R):rvr1.0:cvnSystemEnclosureManufacter:ct3:cvrOEM:
dmi.product.name: .
dmi.product.version: System Version
dmi.sys.vendor: .
** Affects: mdadm (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug raring
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https://bugs.launchpad.net/bugs/1217344
Title:
RAID1 array containing a RAID0 array as a member is started in
degraded mode upon reboot
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