Ubuntu
mdadm package

  1. Bug #541058
  2. Comment #9

Comment 9 for bug 541058

Revision history for this message
Surbhi Palande (csurbhi) wrote : Re: [->UUIDudev] mdadm fails to assemble raid during boot

@tombert, I suggest you to do the following:
1) /usr/share/mdadm/mkconf
2) compare the output of step1 with the output of /etc/mdadm/mdadm.conf. If your array definition is not found in
/etc/mdadm/mdadm.conf, then you will need to add this array definition manually (using its uuids).
(* The initramfs/hook for mdadm shall soon be updated. It should create a mdadm.conf for you or warn you when an active array definition is not found in mdadm.conf)
3) update-initramfs -c -k <kernel-version>. (Verify that the initramfs has your array definition in it)
4) update-grub
5) reboot

This should ensure that your raid is configured while booting. * If /var/run/mdadm is not present then mdadm makes a map in /var/run/ which is already present in initramfs. So this should not be a show stopper for raid bring up. (please refer to man mdadm for more information)
Marking this bug as invalid as of now.