grahamperrin wrote:Are the values to include the disk of the HFS Plus startup volume, which in most cases should not have a ZFS slice?
Yes, of course: if I perform monitoring, I do it for as many devices as I can, few bytes more in a sqlite3 DB won't slow things down.
Moreover, the boot disk is an internal SSD and it may be interesting to check in the future how the wear leveling and other parameters change in time. It's a couple of months old and I have "wear leveling count" = 6 already.
Moreover, the disk I use for Time machine is also HFS (it's the external one that doesn't support SMARTI). This disk is HFS+ because I also want to boot from it (ensured by an additional CCC clone on it).
Concerning Superuser, I haven't thought about it, but even if I did, I wouldn't know where exactly: there are too many websites in the Stack Exchange network. Super User? Stack Overflow? Unix and linux? Server fault?