[Bug 120375] Re: cannot boot raid1 with only one disk

[kilroy]

Is this bug still present? I've installed a fresh 8.04.2 amd64 in a
VirtualBox 2.1.2 with three SATA harddrives. When i switch off a drive,
kernel is loadding but at the end the raid arrays are stopped and the
system is unusable.

root at ubuntu:~# dpkg-reconfigure mdadm
"Do you want to boot your system if your RAID becomes degraded?" -> "YES"

root at ubuntu:~# uname -a
Linux ubuntu 2.6.24-23-server #1 SMP Mon Jan 26 01:36:05 UTC 2009 x86_64 GNU/Linux

root at ubuntu:~# cat /etc/lsb-release 
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=8.04
DISTRIB_CODENAME=hardy
DISTRIB_DESCRIPTION="Ubuntu 8.04.2"

root at ubuntu:~# dpkg -l mdadm grub initramfs-tools
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Installed/Config-f/Unpacked/Failed-cfg/Half-inst/t-aWait/T-pend
|/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err: uppercase=bad)
||/ Name                        Version                     Beschreibung
+++-===========================-===========================-======================================================================
ii  grub                        0.97-29ubuntu21.1           GRand Unified Bootloader
ii  initramfs-tools             0.85eubuntu39.3             tools for generating an initramfs
ii  mdadm                       2.6.3+200709292116+4450e59- tool to administer Linux MD arrays (software RAID)
root at ubuntu:~# cat /proc/mdstat 
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] 
md1 : active raid5 sda5[0] sdc5[2] sdb5[1]
      5124480 blocks level 5, 64k chunk, algorithm 2 [3/3] [UUU]
      
md2 : active raid5 sda2[0] sdc2[2] sdb2[1]
      995840 blocks level 5, 64k chunk, algorithm 2 [3/3] [UUU]
      
md0 : active raid1 sda1[0] sdc1[2] sdb1[1]
      80192 blocks [3/3] [UUU]

root at ubuntu:~# mount | grep ^/
/dev/md1 on / type ext3 (rw,relatime,errors=remount-ro)
/sys on /sys type sysfs (rw,noexec,nosuid,nodev)
/dev/md0 on /boot type ext2 (rw,relatime)

This would be a real show stopper for the 8.04 LTS...

-- 
cannot boot raid1 with only one disk
https://bugs.launchpad.net/bugs/120375
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