Hi,

I'm hoping I have a simple problem but I can't figure out what to do.

Linux distrobution: CEntOS 6.4

Asus motherboard: M4A78LT-M
http://www.asus.com/Motherboards/M4A78LTM/

Original setup:
DVD-ROM via the IDE port
Two 1.5Tb drives on SATA1 and SATA2
RAID1 the two disks, with 3 partitions:
When hard disk space was running low I added two new 3.0Tb disks and did a fresh install of the latest version of CEntOS to one of them. I extended the LVM of the original disk(s) to include the new hard disk.
Life was good until SMART warned me one of the original hard disks was failing.

My question:
How do I now replace the original 1.5Tb disks? Would this be a good time to migrate to OpenSUSE and BTrFS?

I really can not see a way forward so any questions, advise or help would be greatly received. I miss my server and the facilities it gave me :-(

mengo

Once you are familiar with one linux flawor, it is quite difficult to switch to another.

Read man for pvmove, vgsplit, vgmerge; probably this is what you looking for.

You are right voleg. Although I have been happy in the Slackware and Red Hat camp I have never done that well in the Debian or SUSE camp. However I still may make the switch to SUSE in time, as I can see some benefits for what I do.

I did some reading and a little help from here and another forum I feel I am leaps and bounds ahead of where I was. Thank you.

What I have done is:
Mounted my old / and backed up all that I thought was important, forgetting my mythtv database - doh!

I then realised I had created volume groups and logical volumes with the same names as my original setup, creating a conflict. Unfortunately I couldn't remove the duplicates with the command line or gparted but I could with the Anaconda installer with Scientific Linux. I left Anaconda with any what I felt unnecessary RAID partitions removed and the important one left ready for lvm; this time with a blank physical volume but no volume groups created.

Back on the command line in my new install I extended my old volume group:
# vgextend -v vg_phantom /dev/md2
Then moved the data from my old disk to my new one(s)
# pvmove -v /dev/md126 /dev/md2
and finally removed the old disk:
# vgreduce -v vg_phantom /dev/md126

One of my remaining problems is my RAID seems to start at md12x not mdx but I believe I can fix this, reading here:
http://ubuntuforums.org/showthread.p...1#post10907831
http://www.ducea.com/2009/03/08/mdadm-cheat-sheet/
http://askubuntu.com/questions/20970...-being-ignored
http://serverfault.com/questions/399...side-initramfs

Okay, I have lost m mythtv database but I maybe able to recover it from the old good disk. However the recordings are still intact so I may just manually re-encode them.

Finally I have found that the lvm on the new disk(s) is not using all of the available space, but I think some reading and I should be able to fix that too.