----- Forwarded message ----- Hi Rich,
I investigated into this issue a bit and it looks like a result of messy system where systemd-sysv and insserv are co-installed. In insserv/sid, the postinst process will nolonger fail even if the same error occurs. The error will disappear if you remove insserv. And in your initial bug report, meta infomation told me that you use systemd. So please don't co-install systemd-sysv and insserv. >From zfs's side we can do mostly nothing to prevent user from co-installing systemd-sysv and insserv, except for a simple suggestion. Does the issue you reported persist even after removing insserv? I tried to install zfs tens of times in different virtual machines setup in differrent settings. And my conclusion is simply don't co-install them. ----- End forwarded message -----