XFS DAX Mount Option Is Incompatible With Oracle Linux 9 With Reflink Enabled
On Oracle Linux 9 with UEK R7, the file system DAX mount option
dax=always
is incompatible with reflink-enabled XFS file systems.
For example, running the command sudo mount -o dax=always /dev/pmem1
/mnt
displays the following error:
mount: /mnt: wrong fs type, bad option, bad superblock on /dev/pmem1, missing codepage
or helper program, or other error.
mount: (hint) your fstab has been modified, but systemd still uses the old version;
use 'systemctl daemon-reload' to reload.
(Bug ID 35991195)