Re: Problem booting RAID1/mdadm system when one disk is unplugged
On Fri, 1 Sep 2006, James Brown wrote:
I have already posted this question to gmane.linux.raid, but would really
appreciate some help from a Debian perspective please...
My System has 2x120GB IDE disks with the an up-to-date Sarge install, running
kernel 2.6.8-3 and configured for mirroring.
When I tested booting my system, I found:
a) A kernel panic unless both disks are plugged in.
b) One disk removes from the array each reboot.
The relevant logs are on this thread:
I was advised this was a problem with my initrd because it didn't contain a
mdadm.conf file and presumably that I should
Unfortunately, some friends of mine do not agree that my initrd is the
problem because they point out that I can still boot when two disks are
present. What do people here think?
Thanks in advance
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1) You do not need an initrd at all.
2) I would make sure you are booting from the /dev/md* partition.
3) You must have a /boot on a /dev/md partition.
4) You need LILO installed with the special raid option in the config.
5) I have done this and tested by pulling each HDD out and it working
successfully with Debian + 2x74GB raptors.