you should not need any mount options. I have a mounted md array and have went to great lengths to make sure nothing usually accesses it and the drives do spin down and stay spun down until something accesses it. Making sure nothing was accessing it was not the easiest. A "df" with no options will spin them up. I had to move several services that exist on that disk onto an SSD and use that spinning mdraid device more as a backup and/or archive. So md will let the disks spin down so long as md is not doing a check/repair or io to the device for some reason. you might want to run a lsof and see if anything has open files on it, and if nothing has open files on it, then it may something monitoring say space. My machine that lets the disk spin down does not normally have a graphical desktop running, and there monitoring parts in the graphical logins that would be querying disk usage on some schedule. On Tue, Jun 2, 2020 at 4:57 AM 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. > > 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 _______________________________________________ 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
