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

Ace Suares ace at suares.an
Thu Aug 14 12:03:02 UTC 2008

Comment 91 (https://bugs.launchpad.net/ubuntu/+bug/120375/comments/91) worked for me.
I didn't need the extra lvm stuff but it can't hurt.

I was booting from /dev/sdb1, which was the 'failed' drive from

In /etc/fstab, I had /dev/md0 als /, and it shows up as such in 'df'.

But /dev/md0 was not really mounted as root; is was /dev/sdb1 altough it
*says* it's /dev/md0. This is a bug I think.

So I made the changes to the initramfs script, and did update-initramfs -u. BUT THAT HAPPENS ON /dev/sdb1 !
So I had to do this:

mount -t ext3 /dev/md0 /mnt
cd /mnt
chroot .
# Change the script in /usr/share/initramfs-tools/scripts/local !!!!! the previous change was on /dev/sdb1 !!!
update-initramfs -u
exit # from the chroot

This took me ten hours or more (linux-haters !)

Doesn't anyone think it's *really bad* that all 8.04 installs fail
horribly when the root raid-array degrades !? Those machines won't boot
at all when that happens !

And it's not going to be fixed in 8.04 ? How can this be !?

cannot boot raid1 with only one disk
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