That's interesting. I've always thought ext3fs would at least be safer than ext2 seeing that ext2 isn't a journaling filesystem. What happens if you abruptly shut it down e.g. a 1000 times.
What happens? I don't know... fsck would run automatically on reboot, fix the errros and recover part of the last file written in /lost+found/
But why would a server abruptly shut down 1000 times?? I already said btrfs is good enough for desktops and other interactive/supervised systems. And data loss on servers is recovered from backups, not journals!
Restoring from backups can be tedious and time consuming. For example, if you have a database and PITR system, you may have to replay WALs until you get the point in time where the server failed.
XFS is known to be extremely robust for servers - and it's journaled. Most servers nowadays are SSD.
What happens? I don't know... fsck would run automatically on reboot, fix the errros and recover part of the last file written in /lost+found/
But why would a server abruptly shut down 1000 times?? I already said btrfs is good enough for desktops and other interactive/supervised systems. And data loss on servers is recovered from backups, not journals!