Hi,
I'm trying to build raid on Debian Sarge w/2.6.5 kernel, with grub.
I can't seem to get my second md to mount correctly at boot (ironically I
can mount an boot from md0, I thought that was supposed to be the hard
part).
Basically I'm trying to do (starting over with a clean hdc, and booting from
hda):
platinum:~# mdadm -C /dev/md1 --level raid1 --raid-disks 2 missing /dev/hdc2
mdadm: /dev/hdc2 appears to contain an ext2fs file system
size=40001728K mtime=Sun May 2 22:32:37 2004
mdadm: /dev/hdc2 appears to be part of a raid array:
level=1 devices=2 ctime=Sun May 2 22:28:46 2004
Continue creating array? y
mdadm: array /dev/md1 started.
platinum:~# mke2fs -b 4096 -R stride=8 /dev/md1
mke2fs 1.35 (28-Feb-2004)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
5003712 inodes, 10000432 blocks
500021 blocks (5.00%) reserved for the super user
First data block=0
306 block groups
32768 blocks per group, 32768 fragments per group
16352 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632,
2654208,
4096000, 7962624
Writing inode tables: done
Writing superblocks and filesystem accounting information:
This filesystem will be automatically checked every 30 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
platinum:~# cd /boot
platinum:/boot# mkinitrd -r /dev/hda1 -o /boot/initrd.img-2.6.5raid
cd /boot/grub
vi menu.lst
# add this as the first section under the different boot options at the
# bottom
title Debian GNU/Linux, kernel 2.6.3-1-k7 w/RAID
root (hd0,0)
kernel /boot/vmlinuz-2.6.3-1-k7 root=/dev/hda1 ro
initrd /boot/initrd.img-2.6.5raid
savedefault
boot
platinum:/boot# cd /opt
platinum:/opt# mount /dev/md1 /mnt
platinum:/opt# find . -xdev | cpio -pm /mnt
0 blocks
platinum:/opt# grub
grub> root (hd0,0)
Filesystem type is ext2fs, partition type 0x83
grub> setup (hd0)
Checking if "/boot/grub/stage1" exists... yes
Checking if "/boot/grub/stage2" exists... yes
Checking if "/boot/grub/e2fs_stage1_5" exists... yes
Running "embed /boot/grub/e2fs_stage1_5 (hd0)"... 15 sectors are embedded.
succeeded
Running "install /boot/grub/stage1 (hd0) (hd0)1+15 p
(hd0,0)/boot/grub/stage2
/boot/grub/menu.lst"... succeeded
Done.
grub> quit
#then make my fstab look like:
platinum:/opt# cat /etc/fstab
# /etc/fstab: static file system information.
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc defaults 0 0
/dev/hda3 none swap sw 0 0
/dev/hda1 / ext3 defaults,errors=remount-ro 0 1
/dev/hda2 /var ext3 defaults 0 2
/dev/hda5 /home ext3 defaults 0 2
#/dev/hda6 /opt ext3 defaults 0 2
/dev/md1 /opt ext3 defaults 0 2
/dev/hda7 /usr/local ext3 defaults 0 2
(reboot)
On boot if fails to mount that md1 and complains about invalid superblocks
and say hit control-d to boot normal or enter the root password. If I boot
normal /opt doesn't mount.
What am I missing?
Also I feel like I have remnents from previous mdadm -C around. How do I
remove my arrays, remove the filesystems from the hdc and start with a clean
slate?
Thanks
Jay
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