On Sat, 2021-03-27 at 07:59 -0500, Roger Heflin wrote: > Wireshark won't help as it won't tell you what process is doing. And > decoding the commands will be very difficult. Yes, that's what I thought. > You probably should send the power down and wait a few seconds before > starting the loop. It would seem to be pretty likely that if in > the > middle of the spin-down *ANY* command that is received causes it to > power the disk fully back up and aborts the spin-down. But once the > disk is completely spun-down that specific command does not spin the > disk back up. In the middle of the spin-down it would appear that > the disk is not yet in the certain commands do not cause a spin-up > state. This would assume the disk has 2 operational states. When > in > the spun-up state any command causes a spin-up, once in the spun-down > state certain commands don't cause a spin-up. And until the > spin-down is completed it would appear it is still in the first > state. Although that seems very reasonable, it doesn't explain why the *exact same script* works when used from the command line, and doesn't work when called from the systemd unit. All the looping, delaying, checking etc. is within the script itself. 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 Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure