The dracut howto proposed to boot from the root dataset of a pool.
Apart from this giving problems when booting (as the code seems to
expect a child dataset and creates an illegal dataset name when using
the root dataset) the technical limitations of the root dataset
(among others the inability to rename or destroy through the `zfs`
command) resulted in the general consensus to only use it as a
container for the datasets in the pool - not as a filesystem itself.
Removed the idea to boot from the root dataset.
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: bunder2015 <omfgbunder@gmail.com>
Signed-off-by: Gregor Kopka <gregor@kopka.net>
Closes #8247
$ zpool set bootfs=pool/dataset pool
$ zfs set mountpoint=/ pool/dataset
-It is also possible to set the bootfs property for an entire pool, just in
-case you are not using a dedicated dataset for '/'.
-
- $ zpool set bootfs=pool pool
- $ zfs set mountpoint=/ pool
-
Alternately, legacy mountpoints can be used by setting the 'root=' option
on the kernel line of your grub.conf/menu.lst configuration file. Then
set the dataset mountpoint property to 'legacy'.