Is there any way to disable this measuring process, or at least make it optional?
I have one drive that is a bit slow on the uptake, and half the time it's "missing" after a reboot. Simply pulling the tray and re-inserting it fixes the issue 100% of the time - I don't know if it's the drive, the tray, or the backplane. Scanner shows no issues with the drive, and I'm happy to simply pull and reinsert the tray once or twice a month when it happens.
What I'm less content with is the 4+ hours worth of measuring and checking that drivepool goes through every time this happens. I have 34 disks adding up to over 140TB in one big pool, and remeasuring all of that every other reboot just plain isn't necessary. It's one thing if the server crashed or restarted for unknown reasons, but if the reboot was just for regularly scheduled updates, then the measuring process is just unnecessarily slowing things down substantially for hours on end - not to mention putting unnecessary wear on every drive in the system.
Could you add an option to disable automatic remeasuring, or at least throw a dialog window when a missing disk comes back online to ask whether a remeasure should be performed?