On an Ubuntu 16.04 or 14.04 system, are ext4 partitions mounted with
data=writeback by default?
I'm interested in both the defaults when mounting via
/etc/fstab and mounting of other partitions which happens either automatically when an external storage medium becomes connected or when the user clicks on the device in Nautilus.
Furthermore, I'm interested in whether a simple
# mount /dev/sdb1 /mnt
without any explicit mount options behaves any differently from the ways of mounting mentioned above.
Changing to options of partitions mounted via
/etc/fstab is trivial as one can just state the options in each line. When mounting using the command
mount, one can state the options, too, and use a bash alias to not have to write them each time. How can the behavior of automounting or mounting via a click on the partition in Nautilus be changed?
I'm mainly interested in the