Comment 0 for bug 576147

Binary package hint: mdadm

I installed Ubuntu 10.04 on a software (throughout the description I'm talking about softraid) raid1 array, with the alternate installer. It boots, it works, all's well.

Now I wanted to create some new raid arrays and I experience the following:

If I create it with the 1.2 superblock AND I give it a name
"#mdadm --create /dev/md1 --metadata=1.2 --name=TEST --level=1 --raid-devices=2 /dev/sda1 /dev/sdb1 -> the array is created
"#mdadm -Es | grep md1 >> /etc/mdadm/mdadm.conf" -> the array gets the name "TEST" and device name "/dev/md/TEST" and upon doesn't start.
Instead an inactive array called md_d127 (further arrays are named md_d126, md_d125) appears, in /proc/mdstat grabbing one of the components.
Trying to assemble the created array "#mdadm --assemble --name=TEST" (or --assemble /dev/md/TEST) results in a degraded array with only the other component in it.

Stopping the md_d127 array and then assembling the TEST array usually works, but last time I tried it failed.

The following device files are present in /dev (md0 has the system on it):

# ls /dev/md*
/dev/md0 /dev/md_TEST1 /dev/md_TEST3
/dev/md_d127 /dev/md_TEST2 /dev/md_TEST4

/dev/md:
TEST TEST1 TEST2 TEST3 TEST4

If I create a default raid1 (I've tried naming it too, but I guess that's unavailable, with a v0.9 superblock), or one with a 1.2 superblock, but no name given, they all get assembled upon reboot.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: mdadm 2.6.7.1-1ubuntu15
ProcVersionSignature: Ubuntu 2.6.32-21.32-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-21-generic x86_64
Architecture: amd64
Date: Thu May 6 01:45:07 2010
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100427.1)
MDadmExamine.dev.sda: Error: command ['/sbin/mdadm', '-E', '/dev/sda'] failed with exit code 1: mdadm: No md superblock detected on /dev/sda.
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.sda4: Error: command ['/sbin/mdadm', '-E', '/dev/sda4'] failed with exit code 1: mdadm: No md superblock detected on /dev/sda4.
MDadmExamine.dev.sdb: Error: command ['/sbin/mdadm', '-E', '/dev/sdb'] failed with exit code 1: mdadm: No md superblock detected on /dev/sdb.
MDadmExamine.dev.sdb3: Error: command ['/sbin/mdadm', '-E', '/dev/sdb3'] failed with exit code 1: mdadm: No md superblock detected on /dev/sdb3.
MDadmExamine.dev.sdb4: Error: command ['/sbin/mdadm', '-E', '/dev/sdb4'] failed with exit code 1: mdadm: No md superblock detected on /dev/sdb4.
MachineType: Gigabyte Technology Co., Ltd. GA-MA78GPM-DS2H
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-21-generic root=UUID=88e1b6ce-dd96-4f24-b899-48bca4256fc7 ro quiet splash
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: mdadm
dmi.bios.date: 04/14/2009
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F4
dmi.board.name: GA-MA78GPM-DS2H
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF4:bd04/14/2009:svnGigabyteTechnologyCo.,Ltd.:pnGA-MA78GPM-DS2H:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnGA-MA78GPM-DS2H:rvr:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: GA-MA78GPM-DS2H
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
etc.blkid.tab: Error: [Errno 2] No such file or directory: '/etc/blkid.tab'