Gentoo Archives: gentoo-user

From: Volker Armin Hemmann <volker.armin.hemmann@××××××××××××.de>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] root on raid 1 = no boot
Date: Thu, 28 Aug 2008 15:31:02
Message-Id: 200808281730.44923.volker.armin.hemmann@tu-clausthal.de
In Reply to: Re: [gentoo-user] root on raid 1 = no boot by Neil Bothwick
1 On Donnerstag, 28. August 2008, Neil Bothwick wrote:
2 > On Thu, 28 Aug 2008 16:54:03 +0200, Xav' wrote:
3 > > You have to know that the kernel isn't able to assemble RAID devices
4 > > together without the use of mdadm. So you have to use an initrd with the
5 > > mdadm binary to use a RAID root !
6 >
7 > Could you please keep quiet about that, my computers have been using
8 > RAID root devices for years without an initrd and I don't want them to
9 > get the idea they need one now.
10
11 thanks, the last thing I want to deal with is an initrd.
12
13 >
14 > Volker, are sda3 and sdb3 marked as Linux Raid autodetect in cfdisk? If
15 > not you may need mdadm, but with the partitions marked as autodetect, the
16 > kernel should figure it out for itself.
17
18 fdisk -l /dev/sda
19
20 Platte /dev/sda: 500.1 GByte, 500107862016 Byte
21 255 Köpfe, 63 Sektoren/Spuren, 60801 Zylinder
22 Einheiten = Zylinder von 16065 × 512 = 8225280 Bytes
23 Disk identifier: 0x00000000
24
25 Gerät boot. Anfang Ende Blöcke Id System
26 /dev/sda1 * 1 8 64228+ fd Linux raid autodetect
27 /dev/sda2 9 981 7815622+ 82 Linux Swap / Solaris
28 /dev/sda3 982 5844 39062047+ fd Linux raid autodetect
29 /dev/sda4 5845 60801 441442102+ 5 Erweiterte
30 /dev/sda5 5845 8276 19535008+ fd Linux raid autodetect
31 /dev/sda6 8277 60801 421907031 fd Linux raid autodetect
32
33 fdisk -l /dev/sdb
34
35 Platte /dev/sdb: 500.1 GByte, 500107862016 Byte
36 255 Köpfe, 63 Sektoren/Spuren, 60801 Zylinder
37 Einheiten = Zylinder von 16065 × 512 = 8225280 Bytes
38 Disk identifier: 0x00000000
39
40 Gerät boot. Anfang Ende Blöcke Id System
41 /dev/sdb1 * 1 8 64228+ fd Linux raid autodetect
42 /dev/sdb2 9 981 7815622+ 82 Linux Swap / Solaris
43 /dev/sdb3 982 5844 39062047+ fd Linux raid autodetect
44 /dev/sdb4 5845 60801 441442102+ 5 Erweiterte
45 /dev/sdb5 5845 8276 19535008+ fd Linux raid autodetect
46 /dev/sdb6 8277 60801 421907031 fd Linux raid autodetect
47
48 if I only give root=/dev/md1 it won't boot either.
49
50 and from config:
51 CONFIG_MD=y
52 CONFIG_BLK_DEV_MD=y
53 # CONFIG_MD_LINEAR is not set
54 # CONFIG_MD_RAID0 is not set
55 CONFIG_MD_RAID1=y
56
57 are there more kernel options I might have missed?

Replies

Subject Author
Re: [gentoo-user] root on raid 1 = no boot Dirk Heinrichs <dirk.heinrichs@××××××.de>