10/01/2012 00:13, Marc Auslander wrote:
Is it possible to boot a raid root file system. I'm having trouble
finding up to date documentation.
Some searchs talk about a separate /boot partition - I don't
understand why that is needed or relevant.
I'm assuming I'd make a mdadm v 1.2 raid 1 partition for root.
Can someone either tell me if this is workable, or point me at
documentation. (the current grub-pc info is silent about mdadm).
google search lead to various bug reports.
Hi, I can't point to any documentation right now, but I can confirm it
"just works" since I have machines running this kind of config. I only
use a separate /boot for RAID + LUKS, but raid1 alone can work without it.
Having said that, I am not surprised about the bug reports, I have
filled some myself. There was a problem when grub-pc 1.99 came out, but
the "mduuid" patch solved that, it's now fixed thanks to:
"2011-04-17 Vladimir Serbinenko <phco...@gmail.com>
Identify RAID by its UUID rather than (guessed) name.
* grub-core/disk/raid.c (ascii2hex): New function.
(grub_raid_open): Accept mduuid/%s specification.
* grub-core/kern/emu/getroot.c (get_mdadm_name): Revamped into ...
(get_mdadm_uuid): ... this.
(grub_util_get_grub_dev): Use mduuid/%s if UUID is available."
Squeeze version (1.98) is OK, this problem only occurred in
wheezy/testing and up.
If you find a specific bug report that worries you, maybe you can point
to it ?
Anyway, it should work, have fun.
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