Comment 66 for bug 569900

Revision history for this message
Mattias Toom (matthew-toom) wrote : Re: mount: mounting /dev/md0 on /root/ failed: Invalid argument

Hi all,

I can confirm this bug and was lucky enough to find the bug report for it. I installed Ubuntu Server 10.04 64-bit on a machine with multiple RAID1 configurations (mdadm) working and was attempting to build a RAID1 with 2x 500gb drives for the OS.

Couldn't figure out why a fresh install of the OS wouldn't work and was getting worried since I have mdadm running a 2x2tb, and a pair of 2x1tb RAID1's. I thought the error might be relating to all of those RAID configurations confusing the installer somehow. It wasn't.

I got the error messages mentioned above.

It looks like there was an error partitioning the drives; after carefully manually partitioning the drives (USING the installer, I suppose this could have been done with fdisk) I left 100 megabytes of free space as per the post of Thomas Krause. The other change I made was NO to "do you want the system to boot if one of the OS drives is degraded?". I think it was the partitioning change that fixed the problem.

Anyways, after the 2nd install Ubuntu Server boots fine, automatically recognizes all my arrays and life is beautiful.

M. Toom BSc(comp.sci)