Hi @all who answered, thank for your help and please excuse my late answer. I didn't see your answers because of misconfiguration of my GMail filter for that list. The filesystem contains backups of some other filesystems (it's on a external storage which is mirrored by RAID 1). So, if the filesystem get lost, there are still the source partitions of the backups. But you're right, I have to have actually more space purposes like using btrfs-convert, which needs a backup, but can't/want afford that at the moment because I'm student. As far as I remember, I used in the past btrfs-convert to convert the ext4 root partition of my laptop. It didn't really work with old versions of btrfs-progs (I rollbacked it then or imported a backup), but it worked with 4.4 or so. Nevertheless, I won't use btrfs-convert after your warnings, and will create a new filesystem and copy the data from ext4 to btrfs when I have enough space. Thank you all, Kai -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
