/ left as ext3 after 11SP3 to 12SP1 upgrade
After upgrading my SLES from 11SP3 to 12SP1 I found out that the / root file system is still ext3 as it was before.
I think that's why I can't use snapshots on /
snapper create-config -f ext3 /
Creating config failed (invalid filesystem type).
I read that:
To convert the file system to Btrfs, take the file system offline, then enter:
sudo btrfs-convert <device>
But I can't umount / !!!
Is there any way to have snapper working on my system?
Is there any way to convert my ext4 / to btrfs ( leaving the system bootable and working ) ?
Thanks a lot,