Well, fstransform can reformat filesystems in place, so theoretically it might be possible (it cleverly uses sparse files for this). Not with the filesystems mo

Well, fstransform can reformat filesystems in place, so theoretically it might be possible (it cleverly uses sparse files for this). Not with the filesystems mounted though, so the update should be applied at reboot and it potentially takes a long time. Also very risky, especially with a near full drive.