Re: Debian+LVM+RAID
Roger Leigh wrote:
> On Thu, Jul 09, 2009 at 10:45:08PM +0200, martin f krafft wrote:
>> also sprach thveillon.debian <thveillon.debian@googlemail.com> [2009.07.09.2215 +0200]:
>>> It is possible to boot from mdadm software raid1 with grub2, in Lenny
>>> and Squeeze. But I would worry about the lvm, I don't think this is as
>>> straightforward, maybe not even possible at this point (to be
>>> double-checked anyway).
>> grub2 can boot LVM just as well as it can boot RAID1 or RAID5.
>
> Is this stable for production use, or still in the experimental
> stage?
>
>
Hi,
>From my little experience, I have been using it since before the Lenny
release (on Lenny testing), and I am now on Squeeze. I have been using
it too on Ubuntu Intrepid and Jaunty, only had a few problem on Hardy
(had to backport a newer version). All machines on some kind of raid,
some on ext4, but no lvm. Most machines are workstations rebooted daily,
and have no separate /boot, everything is on raid. So yes it's quite
stable for me.
I found that even when there is a problem, it easier to quickly recover
without even leaving the grub2 shell-like environment, I like the
modularity of the /etc/grub.d/ templates.
I recently set grub2 up a Fedora11 machine, it's really not well
integrated in the system yet, and require some manual work, but after
that it just works (on ext4). Debian has done a great job integrating it.
Only down sides are:
_The lack of recovery live-cd that support grub2 out of the box (but a
live Ubuntu/Debian does the job).
_Some disk imaging tools (Clonezilla) default to (re)installing grub on
the imaged disk, you have to be careful and disable it.
_The "os-prober" helper package is working somewhat randomly for me, it
is only supposed to auto-detect other installed systems, so no big deal.
_I don't know how grub2 behaves outside of x86 machines, or with non dos
disk labels.
_There is no support currently for partition label in grub.cfg, I miss
that, but uuid are arguably more reliable anyway.
That's all for my little experience of grub2, I wouldn't go back at this
point, and can't complain about stability, especially on Debian.
Give it a try,
Tom
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