On 6/13/05, Siju George <[EMAIL PROTECTED]> wrote:
> Hi all,
>
> I would like to implement Disk mirroring ( Raid1 ) in Debian Sarge.
I don't know if it is possible during installation in sarge. In redhat
(Fedora to be specific), I have implemented software raid during
installation which is very easy.
> Is it possible to configure it while installation if I have both hard
> disks attached??
By the word attached ; are you meaning mounted? (You have to unmount
it I guess) or do you mean that hard disks are attached physically but
not mounted (can be done).
> Could someone please tell me what is the easiest way ( steps ) to get
> this done???
You can implement mirroring after installation if you have raidtools
installed on your machine. Open up fdisk and see if the partition type
is set to raid auto - 0xfd to be exact.
Now create a /etc/raidtab file and include the following lines:
raiddev /dev/md0
raid-level 1
nr-raid-disks 2
chunk-size 32
persistent-superblock 1
parity-algorithm left-symmetric
device /dev/hda1
raid-disk 0
device /dev/hdb1
raid-disk 1
Usually you get a copy of the above file along with the documentation
of raidtools. So just open it in an editor and modify it to your
liking and then save it in /etc directory.
Now initialize your raid array:
# mkraid /dev/md0
Optionally you can also start raid by the following command:
# raidstart /dev/md0
Next format the raid disk
# mke2fs -j -b 4096 /dev/md0
Lastly mount the newly formated disk :
# mount /dev/md0 /my_raid_disk
That is all there is to it.
Hope this helps
Regards
Ravi
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