Boot environment deletion

[Sithuk]

What is the appropriate method to delete boot environments? I recall that one of the team mentioned that zfsbootmenu is a read only environment and that allowing BE deletion would go against that philosophy. However, what about at the command line once booted into the system? I have used zectl in the past, but wondered if there was a tool I didn't know about. Perhaps from upstream openzfs?

[ahesford]

There isn't really a standard definition of "boot environment". To ZBM, a boot environment is just a root filesystem that has a kernel it can launch. From the running system, just zfs destroy the filesystem you don't want. You can also do this from ZBM. In the menu, select the boot environment you want to destroy. Press CTRL+W to reimport the pool read/write, then CTRL+R to drop to a shell. You can then zfs destroy whatever you like.