> For now I've set up my backup script to sync, sleep for a bit, then use > umount -f.
Meaning, sync(8) before the umount?
Everything else being the same?
And that works?
> It seems brash to ask, but is there a chance that there could
> be a bug elsewhere in the system?
No idea, but I have had
# Some USB disks need to be specifically umounted before shutdown
# otherwise they end up with a non-clean filesystem.
sync && umount /backup
in my /etc/rc.shutdown for years.
Jan
