Thank you all for your input! I really appreciate it.
(I think) I see why you think so. But it is very, very long for big disks. This is my only system and my production pool has to be offline while I test, so quicker would definitely please me. Honestly I don’t expect my disks to be stressed for more than an hour at most in the future, so I’m trying to test thoroughly but not excessively. I really only want to find whether the disks come with defects that should warrant a replacement. If the established knowledge is that that can only be said after four passes of badblocks I will probably go ahead with it. I would however be happy if someone has a well-grounded different opinion on this…
Yeah, it will be daily/monthly for me as well…
Thank you!
I don’t either. I thought there was an idea behind it. But I don’t know. Does anyone here?
Btw, cryptsetup is a no-go anyway, it appears dm_mod is not part of TNS (anymore), see Upgrade Scale with legacy LUKS pool .
So, what do you think, will dd and cmp take as long as one pass of badblocks? What would I miss besides stressing the drives for longer?
Thanks again, everyone!