Hello,
I have and olde HDD and two new HDDs:
- hda1 - my current root filesystem '/'
- sda1 - part of raid1 /dev/md0 [U_U]
- hdc1 - part of raid1 /dev/md0 [U_U]
I want all hda1, sda1, hdc1 to be a raid1. I remounted hda1 readonly
then I did 'dd if=/dev/hda1 of=/dev/md0'. I carefully checked that
the partition sizes match exactly. So now md0 contains the same thing
as hda1.
But hda1 is still outside of the array. I want to add it to the array.
But before I do this I think that I should boot from /dev/md0 ?
Otherwise I might hose this system. I tried `grub-install /dev/sda1`
(assuming that grub would see no problem with reading raid1
partition, and boot from it, until mdadm detects an array). I tried
`grub-install /dev/sda` as well as on /dev/hdc and /dev/hdc1.
I turned off 'active' flag for partition hda1 and turned it on for hdc1
and sda1. But still grub is booting from hda1.
I did all this with version 1.1
mdadm --create --verbose /dev/md0 --chunk=64 --level=raid1 \
--metadata=1.1 --bitmap=internal --raid-devices=3 /dev/sda1 \
missing /dev/hdc1
I'm NOT using LVM here.
Can someone tell me how should I switch grub to boot from /dev/md0 ?
After the boot I will add hda1 to the array, and all three partitions
should become a raid1.
--
Janek Kozicki |
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