Thanks for replies. As I had expected, they brought even more uncertainty then I had before... :-)
ext3/4: I excluded them because as I understand, they do not support snapshots (only with lvm, which I do not use, and I've hreard snapshots in lvm are not very effective, or something like that). Next minus-point, I tried resizing of ext3/lvm once in the past and remember it was a real pain in a**... reiserfs/reiser4: Future of these fs seems to be somehow vague, at least to me. And I do not know if it can handle snaphosts and resizing. xfs & power-off: I have always thought, journaling is there to prevent data loss during unexpected power-off. And now I read I could loose data even with journaled fs...? jfs & power-off: the same. How is it possible, I could loose data with such a mature journaled filesystem during power-off? btrfs: never heard of it. Is it stable enough to be used? I just checkt man-page of "mount", and it does not show btrfs as supported filesystem... Jarry
