Hi,
On this new machine that I've been playing with I'm interested in
doing a chroot install of Gentoo onto RAID1. As partitions 1, 2 & 3
are taken with the first install I created an extended partition and
then a new logical partition intending /dev/sdX5 to be the new
install. I do intend to boot this install later, but for now it's just
chroot.
When I attempt to create the RAID I get the message shown below
about "mdadm: Note: this array has metadata at the start..."
QUESTIONS:
1) Is there anything special about RAID on logical partitions that I
should be careful about? Do I need to move the partition start away
from the beginning of the logical partition?
2) As I do intend to put / for the new install on this RAID does grub
as a boot-loader understand md/v1.x metadata?
3) My (multiple) boot partitions are not RAID so they will start and
provide the grub menu choices, but do I need to do anything other than
include RAID1 in the kernel to then boot /dev/md5 - the RAID built
using /dev/sdX5?
Thanks,
Mark
keeper ~ # fdisk -l /dev/sda /dev/sdb /dev/sdc
Disk /dev/sda: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x1d23ae47
Device Boot Start End Blocks Id System
/dev/sda1 * 1 14 112423+ 83 Linux
/dev/sda2 16 538 4200997+ 83 Linux
/dev/sda3 2048 5964 31463302+ 83 Linux
/dev/sda4 6000 121601 928573065 5 Extended
/dev/sda5 6000 19054 104864256 83 Linux
Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x85959094
Device Boot Start End Blocks Id System
/dev/sdb1 * 1 14 112423+ 83 Linux
/dev/sdb2 16 538 4200997+ 83 Linux
/dev/sdb4 6000 121601 928573065 5 Extended
/dev/sdb5 6000 19054 104864256 83 Linux
Disk /dev/sdc: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x70d12429
Device Boot Start End Blocks Id System
/dev/sdc1 1 14 112423+ 83 Linux
/dev/sdc2 16 538 4200997+ 83 Linux
/dev/sdc4 6000 121601 928573065 5 Extended
/dev/sdc5 6000 19054 104864256 83 Linux
keeper ~ #
keeper ~ # mdadm --create /dev/md5 --level=1 --raid-devices=3
/dev/sda5 /dev/sdb5 /dev/sdc5
mdadm: Note: this array has metadata at the start and
may not be suitable as a boot device. If you plan to
store '/' or '/boot' on this device please ensure that
your boot-loader understands md/v1.x metadata, or use
--metadata=1.0
mdadm: Note: this array has metadata at the start and
may not be suitable as a boot device. If you plan to
store '/' or '/boot' on this device please ensure that
your boot-loader understands md/v1.x metadata, or use
--metadata=1.0
mdadm: Note: this array has metadata at the start and
may not be suitable as a boot device. If you plan to
store '/' or '/boot' on this device please ensure that
your boot-loader understands md/v1.x metadata, or use
--metadata=1.0
Continue creating array? n
mdadm: create aborted.
keeper ~ #
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