Ubuntu
mdadm package

RAID1 array containing a RAID0 array as a member is started in degraded mode upon reboot

Bug #1217344 reported by Rune K. Svendsen on 2013-08-27

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	mdadm (Ubuntu)	New	Undecided	Unassigned

Bug Description

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:

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: .

Tags:

Revision history for this message

Rune K. Svendsen (runeks) wrote on 2013-08-27:

BootDmesg.txt Edit (61.1 KiB, text/plain; charset="utf-8")
CurrentDmesg.txt Edit (1.0 KiB, text/plain; charset="utf-8")
Dependencies.txt Edit (3.3 KiB, text/plain; charset="utf-8")
HookError_source_mdadm.txt Edit (1.2 KiB, text/plain; charset="utf-8")
Lspci.txt Edit (30.1 KiB, text/plain; charset="utf-8")
Lsusb.txt Edit (761 bytes, text/plain; charset="utf-8")
MDadmExamine.dev.sdb1.txt Edit (725 bytes, text/plain; charset="utf-8")
MDadmExamine.dev.sdc1.txt Edit (685 bytes, text/plain; charset="utf-8")
MDadmExamine.dev.sdd1.txt Edit (685 bytes, text/plain; charset="utf-8")
ProcCpuinfo.txt Edit (3.1 KiB, text/plain; charset="utf-8")
ProcInterrupts.txt Edit (2.3 KiB, text/plain; charset="utf-8")
ProcMDstat.txt Edit (293 bytes, text/plain; charset="utf-8")
ProcModules.txt Edit (5.3 KiB, text/plain; charset="utf-8")
ProcMounts.txt Edit (1.9 KiB, text/plain; charset="utf-8")
ProcPartitions.txt Edit (470 bytes, text/plain; charset="utf-8")
UdevDb.txt Edit (155.6 KiB, text/plain; charset="utf-8")
UdevLog.txt Edit (324.3 KiB, text/plain; charset="utf-8")
etc.blkid.tab.txt Edit (1.3 KiB, text/plain; charset="utf-8")
mdadm.conf.txt Edit (1023 bytes, text/plain; charset="utf-8")

Revision history for this message

Rune K. Svendsen (runeks) wrote on 2013-08-27:

Download full text (3.4 KiB)

Here are some relevant lines from syslog:

    Aug 27 14:27:23 rune-desktop kernel: [ 1.943848] md: bind<sdb1>
    Aug 27 14:27:23 rune-desktop kernel: [ 1.958267] md: bind<sdc1>
    Aug 27 14:27:23 rune-desktop kernel: [ 2.036123] md: bind<sdd1>
    Aug 27 14:27:23 rune-desktop kernel: [ 2.037575] md: raid0 personality registered for level 0
    Aug 27 14:27:23 rune-desktop kernel: [ 2.037679] md/raid0:md0: md_size is 3907045376 sectors.
    Aug 27 14:27:23 rune-desktop kernel: [ 2.037682] md: RAID0 configuration for md0 - 1 zone
    Aug 27 14:27:23 rune-desktop kernel: [ 2.037683] md: zone0=[sdc1/sdd1]
    Aug 27 14:27:23 rune-desktop kernel: [ 2.037692] md0: detected capacity change from 0 to 2000407232512
    Aug 27 14:27:23 rune-desktop kernel: [ 2.038966] md0: unknown partition table
    Aug 27 14:27:23 rune-desktop kernel: [ 2.231766] md: linear personality registered for level -1
    Aug 27 14:27:23 rune-desktop kernel: [ 2.233460] md: multipath personality registered for level -4
    Aug 27 14:27:23 rune-desktop kernel: [ 2.236043] md: raid1 personality registered for level 1
    Aug 27 14:27:23 rune-desktop kernel: [ 2.480805] md: raid6 personality registered for level 6
    Aug 27 14:27:23 rune-desktop kernel: [ 2.480807] md: raid5 personality registered for level 5
    Aug 27 14:27:23 rune-desktop kernel: [ 2.480808] md: raid4 personality registered for level 4
    Aug 27 14:27:23 rune-desktop kernel: [ 2.484824] md: raid10 personality registered for level 10
    Aug 27 14:27:23 rune-desktop kernel: [ 2.523690] md/raid1:md2: active with 1 out of 2 mirrors
    Aug 27 14:27:23 rune-desktop kernel: [ 2.523720] md2: detected capacity change from 0 to 2000263667712
    Aug 27 14:27:23 rune-desktop kernel: [ 2.552606] md2: unknown partition table
    Aug 27 14:27:24 rune-desktop mdadm[1706]: DegradedArray event detected on md device /dev/md2
    Aug 27 14:27:24 rune-desktop mdadm[1706]: DeviceDisappeared event detected on md device /dev/md0, component device Wrong-Level
    Aug 27 14:27:25 rune-desktop dbus[717]: [system] Activating service name='org.freedesktop.systemd1' (using servicehelper)
    Aug 27 14:27:25 rune-desktop dbus[717]: [system] Successfully activated service 'org.freedesktop.systemd1'
    Aug 27 14:27:30 rune-desktop udisksd[2754]: Error creating watch for file /sys/devices/virtual/block/md0/md/sync_action: No such file or directory (g-file-error-quark, 4)
    Aug 27 14:27:30 rune-desktop udisksd[2754]: Error creating watch for file /sys/devices/virtual/block/md0/md/degraded: No such file or directory (g-file-error-quark, 4)
    Aug 27 14:33:27 rune-desktop kernel: [ 373.794337] md: bind<md0>
    Aug 27 14:33:27 rune-desktop kernel: [ 373.832043] disk 1, wo:1, o:1, dev:md0
    Aug 27 14:33:27 rune-desktop kernel: [ 373.832103] md: recovery of RAID array md2
    Aug 27 14:33:27 rune-desktop kernel: [ 373.832108] md: minimum _guaranteed_ speed: 1000 KB/sec/disk.
    Aug 27 14:33:27 rune-desktop kernel: [ 373.832110] md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for recovery.
    Aug 27 14:33:27 rune-desktop kernel: [ 373....

Here are some relevant lines from syslog:

Aug 27 14:27:23 rune-desktop kernel: [    1.943848] md: bind<sdb1>
    Aug 27 14:27:23 rune-desktop kernel: [    1.958267] md: bind<sdc1>
    Aug 27 14:27:23 rune-desktop kernel: [    2.036123] md: bind<sdd1>
    Aug 27 14:27:23 rune-desktop kernel: [    2.037575] md: raid0 personality registered for level 0
    Aug 27 14:27:23 rune-desktop kernel: [    2.037679] md/raid0:md0: md_size is 3907045376 sectors.
    Aug 27 14:27:23 rune-desktop kernel: [    2.037682] md: RAID0 configuration for md0 - 1 zone
    Aug 27 14:27:23 rune-desktop kernel: [    2.037683] md: zone0=[sdc1/sdd1]
    Aug 27 14:27:23 rune-desktop kernel: [    2.037692] md0: detected capacity change from 0 to 2000407232512
    Aug 27 14:27:23 rune-desktop kernel: [    2.038966]  md0: unknown partition table
    Aug 27 14:27:23 rune-desktop kernel: [    2.231766] md: linear personality registered for level -1
    Aug 27 14:27:23 rune-desktop kernel: [    2.233460] md: multipath personality registered for level -4
    Aug 27 14:27:23 rune-desktop kernel: [    2.236043] md: raid1 personality registered for level 1
    Aug 27 14:27:23 rune-desktop kernel: [    2.480805] md: raid6 personality registered for level 6
    Aug 27 14:27:23 rune-desktop kernel: [    2.480807] md: raid5 personality registered for level 5
    Aug 27 14:27:23 rune-desktop kernel: [    2.480808] md: raid4 personality registered for level 4
    Aug 27 14:27:23 rune-desktop kernel: [    2.484824] md: raid10 personality registered for level 10
    Aug 27 14:27:23 rune-desktop kernel: [    2.523690] md/raid1:md2: active with 1 out of 2 mirrors
    Aug 27 14:27:23 rune-desktop kernel: [    2.523720] md2: detected capacity change from 0 to 2000263667712
    Aug 27 14:27:23 rune-desktop kernel: [    2.552606]  md2: unknown partition table
    Aug 27 14:27:24 rune-desktop mdadm[1706]: DegradedArray event detected on md device /dev/md2
    Aug 27 14:27:24 rune-desktop mdadm[1706]: DeviceDisappeared event detected on md device /dev/md0, component device Wrong-Level
    Aug 27 14:27:25 rune-desktop dbus[717]: [system] Activating service name='org.freedesktop.systemd1' (using servicehelper)
    Aug 27 14:27:25 rune-desktop dbus[717]: [system] Successfully activated service 'org.freedesktop.systemd1'
    Aug 27 14:27:30 rune-desktop udisksd[2754]: Error creating watch for file /sys/devices/virtual/block/md0/md/sync_action: No such file or directory (g-file-error-quark, 4)
    Aug 27 14:27:30 rune-desktop udisksd[2754]: Error creating watch for file /sys/devices/virtual/block/md0/md/degraded: No such file or directory (g-file-error-quark, 4)
    Aug 27 14:33:27 rune-desktop kernel: [  373.794337] md: bind<md0>
    Aug 27 14:33:27 rune-desktop kernel: [  373.832043]  disk 1, wo:1, o:1, dev:md0
    Aug 27 14:33:27 rune-desktop kernel: [  373.832103] md: recovery of RAID array md2
    Aug 27 14:33:27 rune-desktop kernel: [  373.832108] md: minimum _guaranteed_  speed: 1000 KB/sec/disk.
    Aug 27 14:33:27 rune-desktop kernel: [  373.832110] md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for recovery.
    Aug 27 14:33:27 rune-desktop kernel: [  373.832113] md: using 128k window, over a total of 1953382488k.
    Aug 27 14:33:27 rune-desktop kernel: [  373.832281] md: md2: recovery done.
    Aug 27 14:33:27 rune-desktop kernel: [  373.875909]  disk 1, wo:0, o:1, dev:md0
    Aug 27 14:33:27 rune-desktop mdadm[1706]: SpareActive event detected on md device /dev/md2

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