On Fri, Nov 03, 2006 at 12:09:49AM +0500, Igor Goldenberg wrote:
> Hello,
>
> I want to migrate from one-disk installation to RAID1 array where
> initial boot disk will be one of the components of array. I created
> RAID1 in degraded mode (I have only two IDE disks: wd0 and wd1, but in
> raid0.conf I wrote /dev/wd2b and /dev/wd1d). Then I copied my current
> boot disk contents to new array (tar -Xcpf - / | tar -C /mnt -xvpf -)
> and marked raid0 as root (raidctl -A root raid0). After reboot I have
> raid as boot disk. In the raid0 I have now failed component0 and
> optimal /dev/wd1b. After adding /dev/wd0b as spare disk,
> reconstruction failed component0 to it (raidctl -F component0 raid0)
> and initialization of parity (raidctl -P raid0) I have such raid0:
>
> # raidctl -s raid0
> raid0 Components:
> component0: spared
> /dev/wd1b: optimal
> Spares:
> /dev/wd0b: used_spare
> Parity status: clean
> Reconstruction is 100% complete.
> Parity Re-write is 100% complete.
> Copyback is 100% complete.
>
> It's good but I want to have two optimal raid0 components: /dev/wd0b
> and /dev/wd1b, not as spared component0 and used_spare /dev/wd0b. What
> I need to do for it?
>
>
> And one more question. I have raid0b as swap partition but kernel puts on
> boot:
> swapmount: no device
> Kernel was booted from /dev/wd0a and /dev/wd0b is a raid partition.
> Where does it search swap partition 'b': on wd0 or on new root -
> raid0?
I'd venture a guess the kernel is happily [1] swapping to wd0b. Don't
use the b part of the boot disk for anything other than swap.
Joachim
[1] For some values of...
