On Wed, 2020-06-03 at 08:33 +1000, Cameron Simpson wrote: > On 02Jun2020 10:57, Patrick O'Callaghan <pocallaghan@xxxxxxxxx> wrote: > > I have a powered USB dock with a couple of SATA drives configured as > > RAID1, and used only for nightly backups. The (minimal) manual for the > > dock tells me it will power down after 30 minutes idle time, however I > > don't see this happening. I presume that something (such as the md > > system) is touching the drives periodically. > > > > What is the fstab option to have the drives mounted only when accessed? > > This used to be automount (or autofs) but with systemd getting its > > fingers into everything I know longer know how to do this. > > > > Can the drive be automatically unmounted if not in use? I presume this > > would stop md from trying to check it and hence prevent the dock from > > keeping it powered on. > > My own solution, here and at a client, is to have the backup script do > the mount and umount. This has the advantage that the backups aren't > even available for mangling the rest of the time. A script like this: > > if mount /the/backup/volume > then > ... run the backup ... > umount /the/backup/volume > fi > > works nicely. The md stuff should, I expect, leave things alone except > for the weekly(?) rescan. > > It also means that if you know the backup's over you can freely unplug > them (eg put them on a shelf or in a drawer, or send one set off site). Good idea. I expect I'll want to use the drives for something else in the future (they're nearly empty), which is why I wanted it to be automatic, but for now it's a reasonable workaround. poc _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx
