David W Noon wrote: > My best suggestion is to create a maximal primary partition as /dev/sdd1 > and use that as your LUKS volume. That way, LVM will receive the > partition details from udev and *might* not bother re-reading the > partition table (but don't bet big bucks on it).
OK, I tried that now with an external drive that also spins down after some minutes - hdparm -Y does not work for external drives it seems. I made a single partition /dev/sdj1 (BTW, what will happen if I add 17 more drives? and I run out of letters?), waited until the drive spun down, issued pvscan and whooooooosh, the drive is back. So it seems there is no solution, I think I just have to live with this. AFAIK spinning up and down often is not too bad for a drive nowadays, but some drives are 5 years old. All drives also spin up when I let Digikam retrieve photos from my camera. And it seems drives with mounted partitions also sometimes spin down then I delete files, but I cannot reproduce this right now. Strange. But this would be great, because it's annoying to let a drive spin up just because I delete a file somewhere. Thanks for your ideas David, too bad it didn't work. Wonko