On Fri, Mar 17, 2023 at 03:46:54PM +0100, Nicolas George wrote: > Reco (12023-03-17): > > Yes, it will destroy the contents of the device, so backup > > No. If I accepted to have to rely on an extra copy of the data, I would > not be trying to do something complicated like that.
Well, theoretically you can use Btrfs instead. I recall that there was some way to convert ext4 to btrfs without losing anything. Practically, friends do not let friends to use btrfs ;) Unless you're using SLES (*not* OpenSUSE), and do backups frequently, then it's kind of OK. In conclusion, implementing mdadm + iSCSI + ext4 would be probably the best way to achieve whatever you want to do. PS There's that old saying, "RAID is not a substitute for a backup". What you're trying to do sounds suspiciously similar to an old "RAID split-mirror" backup technique. Just saying. Reco
