Why has my Mac been running fsck_hfs for two days now?
- It was probably running from when your Time Machine volume was mounted.
- If the volume isn't present anymore, I doubt it.
- I'm sure you can
sudo killall fsck_hfs; it wouldn't hurt anything. (Have you tried restarting?)
- I'm sure you can
- It probably is.
Clicking on the Time Machine icon in the menu bar and choose "Skip verification" caused the fsck_hfs process to stop itself. Maybe a bit nicer than kill...