Gentoo Archives: gentoo-user

From: Xavier Parizet <xav@×××××××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] How does grub assemble a RAID1 for / ??
Date: Sun, 04 Apr 2010 10:00:14
Message-Id: 4BB8629D.1060003@gentooist.com
In Reply to: Re: [gentoo-user] How does grub assemble a RAID1 for / ?? by Albert Hopkins
1 Try appending md=3,/dev/sdb3,/dev/sdc3 to the kernel command line
2 parameters.
3
4 On 04/04/2010 01:45 AM, Albert Hopkins wrote:
5 > On Sat, 2010-04-03 at 16:07 -0700, Mark Knecht wrote:
6 >> The install is complete but it won't boot. grub finds the kernel
7 >> and starts booting but then I get the typical VFS file sync error as
8 >> the kernel starts looking for the install on /dev/md3. What I'm not
9 >> understanding is how does the boot process get the information
10 >> required to assemble the RAID device.
11 >
12 > GRUB does not assemble raid. That's why it only works with RAID1.
13 >
14 > By your own account, GRUB has succeeded, therefore GRUB is not the
15 > problem.
16 >
17 > The problem is the kernel
18 >
19 > The kernel assembles RAID by looking for partitions of with the Linux
20 > RAID partition type, finding out what kind of RAID they are, and
21 > assembling them (according to their RAID volume UUID).
22 >
23 > You apparently only have one RAID volume. It's probably being assigned
24 > to /dev/md0, yet you are passing root=/dev/md3.. not sure why you are
25 > doing that.
26
27 --
28 Xavier Parizet
29 YaGB : http://gentooist.com
30 GPG : C7DC B10E FC21 63BE
31 B453 D239 F6E6 DF65 1569 91BF

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Re: [gentoo-user] How does grub assemble a RAID1 for / ?? Mark Knecht <markknecht@×××××.com>