Move Fstab mount config that contains hyphens to Systemd.
I’d like to move the following
/etc/fstab configuration to Systemd:
UUID=73297ccb-8aa8-4e36-96d7-955980097008 /mnt/storage-ssd xfs rw,nodev,nosuid 0 0 UUID=e90a3068-51b1-454b-b5de-d381305ca6f6 /mnt/storage-k8s xfs rw,nodev,nosuid 0 0 UUID=2eba5be7-4b63-41da-a413-f30a3a604a13 /mnt/storage-luks xfs rw,nodev,nosuid 0 0
The problem is that all of my mount points contain a hyphen.
Tested with systemd-219.
From man systemd.mount:
Mount units must be named after the mount point directories they control. Example: the mount point /home/lennart must be configured in a unit file home-lennart.mount.
From man 5 systemd.unit:
Some unit names reflect paths existing in the file system namespace. Example: a device unit dev-sda.device refers to a device with the device node /dev/sda in the file system namespace. If this applies, a special way to escape the path name is used, so that the result is usable as part of a filename.
Basically, given a path, “/” is replaced by “-” and all other characters which are not ASCII alphanumerics are replaced by C-style “\x2d” escapes (except that “_” is never replaced and “.” is only replaced when it would be the first character in the escaped path). The root directory “/” is encoded as single dash, while otherwise the initial and ending “/” are removed from all paths during transformation.
Create a Systemd service file to mount the SSD disk to
$ sudo touch "/usr/lib/systemd/system/mnt-storage\\x2dssd.mount"
Edit the file and add the following configuration:
[Unit] Description=Mount SSD disk to /mnt/storage-ssd DefaultDependencies=no Conflicts=umount.target Before=local-fs.target umount.target [Mount] What=UUID=73297ccb-8aa8-4e36-96d7-955980097008 Where=/mnt/storage-ssd Type=xfs Options=rw,nodev,nosuid [Install] WantedBy=local-fs.target
Enable and start the service:
$ sudo systemctl enable --now "mnt-storage\\x2dssd.mount"
$ sudo systemctl status "mnt-storage\\x2dssd.mount" ● mnt-storage\x2dssd.mount - Mount SSD disk to /mnt/storage-ssd Loaded: loaded (/usr/lib/systemd/system/mnt-storage\x2dssd.mount; enabled; vendor preset: disabled) Active: active (mounted) since Sun 2021-03-14 13:09:51 GMT; 4s ago Where: /mnt/storage-ssd What: /dev/mapper/vg_os-lv_fast Process: 23609 ExecMount=/bin/mount UUID=73297ccb-8aa8-4e36-96d7-955980097008 /mnt/storage-ssd -t xfs -o rw,nodev,nosuid (code=exited, status=0/SUCCESS) Tasks: 0 Memory: 0B Mar 14 13:09:51 kvm1.hl.test systemd: Mounting Mount SSD disk to /mnt/storage-ssd... Mar 14 13:09:51 kvm1.hl.test systemd: Mounted Mount SSD disk to /mnt/storage-ssd.
You can use:
Thanks, that’s very useful to know!