Trying to read up on brtfs, but I still haven't figured out what exactly to do. Hopefully someone wants to point me in the right direction.
I have a homeserver with Fedora 20. The server has 4 disks. I have a LVM spanning three of these disks. My mainboard has 4 SATA ports, so adding a new drive means removing an old one. The old one can temporarily be attached through USB2 to copy the stuff from it and afterwards it will be an backup drive. My new harddrive (4 TB) is smaller than the total size of the LVM.
I want to move away from LVM to a btrfs partition spanning multiple drives. The new drive can contain the contents of 2 of the old ones, so it is possible to just copy the contents from the old drives to the new drive, empty them and include them in the btrfs partition. I would like to setup these partitions in a way where a mount point of the btrfs partition is mirrored (raid1) to keep my photos and documents a bit safer (and safe from bitrot :-) ).
- How can I see which data in my LVM is on which drives exactly or empty a specific harddrive of the LVM?
- How can I create a btrfs volume spanning multiple drives?
- How can I create the mirror partition?
- Any tips what to watch for in this process?