[Bug 776908] Re: mdadm arrays fail to mount

[sflinux]

I updated from 10.1 to 11.04 and my raid 1 fails to mount on reboot.  I have to type M to enter Manual and type,
sudo mdamd -A -R /dev/mdo 
then I can type Control D and boot as normal.
I tried dpkg-reconfigure mdadm
and update-initramfs -u
but neither fixed the problem for me.
I will try the workaround by parish at this thread:
http://ubuntuforums.org/archive/index.php/t-1748467.html

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to mountall in Ubuntu.
https://bugs.launchpad.net/bugs/776908

Title:
  mdadm arrays fail to mount

Status in “mountall” package in Ubuntu:
  Confirmed

Bug description:
  Binary package hint: mountall

  I have a RAID 1 partition across /dev/sdb3 and /dev/sdc3 which was
  created with mdadm in 9.10.  It worked fine through upgrades to 10.04
  and 10.10, but in 11.04 it fails to mount at boot time.

  I updated my /etc/fstab to account for the apparent device name change
  from /dev/md0 to /dev/md_d0 in 11.04.  This allowed me to mount the
  RAID partition manually, but it still does not mount at boot.  I get
  the error "The disk drive for /mnt/data is not yet ready or not
  present".  If I drop into the manual recovery shell, however, a "mount
  /mnt/data" succeeds.

  If I drop into the manual recovery shell, but exit without doing
  anything, the subsequent invocation of mountall still fails to mount
  the partition.  So it appears that this is not a timing issue.

  dmesg shows the RAID as active, with no errors, apparently before
  mountall is invoked.  /proc/mdstat concurs.

  mountall 2.25ubuntu1

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/mountall/+bug/776908/+subscriptions