From: Yoho, Cindy (Cyoho@umpublishing.org)
Date: Sat Feb 23 2008 - 11:31:11 EST
Hi all,
I am trying to do something that HP says I can't do :-) and I just want
to confirm that they are right. I have my system disk mirrored, and I
want to know if I can break the mirror in such a way that I can still
boot off either disk. HP says the only way to do that is to physically
pull the alternate disk out of the enclosure, then push it back in if I
want to boot from it. This seems crazy to me. I am about to boot from
an ignite tape and resize all of the primary disk's logical volumes,
which then requires loading everything from the tape to get it back in
working order. If this tape doesn't load correctly I want to be able to
boot off the mirror and get back to square one. Surely there is a way
to do this? HP claims when you load an ignite tape it marks the mirror
as unbootable, because it's no longer like the primary. I suggested
breaking the mirror prior to making the ignite tape, so the info on the
tape doesn't know about the copy, but they say lvreduce will do the same
thing, making the alternate disk unbootable. Anyone ever do this?
Thanks in advance,
Cindy
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