[CentOS] adding raid1 to running system

[dwoody1]

Robert Heller wrote:
> At Mon, 24 Jan 2011 14:53:45 -0600 CentOS mailing list <centos at centos.org> wrote:
> 
>>> I have followed the procedure on the Centos page:
>>>
>>> http://wiki.centos.org/HowTos/CentOS5ConvertToRAID
>> Is there a how too for CentOS 4.x?
> 
> It shouldn't be much different than the 5.x howto.
Iam on Centos 5.5 with all updates.

> 
>>> My setup is slightly different. I am using two partitions, / and /home.
>>> I have setup swap as a file, /home/swapfile.
>>>
>>> My hard drives are 500Gig sda and sdb.
>>>
>>> In modifying the instructions for initializing  sdb I have:
>>>
>>> used /dev/md0 for / (sdb1)
>>> used /dev/md1 for /home (sdb2)
>>>
>>> In section 3.6
>>>
>>> The line:
>>> mount /dev/RaidSys/Root /mnt/root.new
>>>
>>> was changed to
>>> mount /dev/md0 /mnt/root.new
>>>
>>> Everything seems to go well until I get to section 4.4.1/4.4.2 Install grub.
>>> The commands for installing grub show success but when I edit the
>>> /mnt/root.new/boot/grub/menu.lst
>>> the contents still point to hd0 not hd1.
>>>
>>> In section 4.4.4 I am not sure how the following should be changed:
>>> umount /mnt/boot.new
>>> mount /dev/md0 /mnt/root.new/boot
>>>
>>> The umount is not needed in my case but should the second line be:
>>> mount /dev/md0 /mnt/root.new
>>>
>>> Other info I have found includes creating a /etc/mdadm.conf. This is not
>>> referred to in the instructions.
>>>
>>> Are the changes I have made correct? Am I missing any other changes?
>>>
>>> Thanks for any help,
>>>
>>> David
>>>
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> 
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