Am Donnerstag, dem 11.03.2021 um 11:00 +0000 schrieb Patrick O'Callaghan: > Apologies in advance if this is a FAQ, or if there is a more > appropriate list for this question. I'm looking for a step-by-step > guide for the following situation: > > I have an external 2-bay USB3 drive enclosure, configured as an MD > Raid-1 device. This works without issue. > > I normally only use the device for nightly backups, so would prefer to > leave it powered off until needed. > > I have scripts to power it up (creating the appropriate /dev/md entry > and mounting the drive) and down (unmounting, removing the /dev/md > entry and sending a magic signal to the USB device so it powers itself > down after 30 minutes). > > Unfortunately a system reboot always leaves it in the 'powered up and > present in /dev/md' state, so I have to manually run the power-down > script every time I reboot. This is inelegant. > > I would much prefer to have this all handled automagically by systemd, > but I need guidance on how to configure it. If it weren't for the power > question, I know I can just use automount (and have managed to get this > far on my own), but I don't know where or how to insert the power > scripts. My reading of the systemd docs leads me to think that > ExecStart/Stop might be the way, but where do I put this? Do I need a > specific foo.mount unit (I'm currently using /etc/fstab)? > > poc Hi,
I don't really understand your problem. Do you want to unmount the backup drive whenever it's not in use? There is the mount option x- systemd.automount,x-systemd.idle-timeout=5s (man systemd.mount) to mount/unmount on demand. Can you share your fstab entry for your backup device? BR Silvio _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/systemd-devel
