… bectl was sometimes failing to destroy no longer needed boot environments …
If I understand correctly, this is by design for some situations … for no longer needed snapshots.
I previously misunderstood the manual page. After (hopefully) learning: <https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=254428#c2>. tl;dr when I most recently encountered the warning, I knew to use something other than bectl to (if necessary) destroy the remaining snapshot(s); and I recall thinking that the snapshots might have been a product of beadm.
Notable bugs include:
- 239702 – sysutils/openzfs bectl activate … cannot promote … not a cloned filesystem … did not successfully activate boot environment, to which I have paid no attention in a long time
- 254441 – bectl should prevent creating BEs with unbootable names