zfs --version CLI nomore works in zfs-2.3.0rc1

[whoschek]

System information

Type	Version/Name
Distribution Name	OpenZFS
Distribution Version	ubuntu-22.04
Kernel Version
Architecture
OpenZFS Version	2.3.0rc1

Describe the problem you're observing

zfs --version nomore works in zfs-2.3.0rc1. Instead, it errors out with:

Invalid option '-'
usage: zfs command args ...
where 'command' is one of the following:\
  version [-j]
  create [-Pnpuv] [-o property=value] ... filesystem

as shown in detail in the log here: https://github.com/whoschek/bzfs/actions/runs/11204871144/job/31143773762
Here is how exactly the job is being run: https://github.com/whoschek/bzfs/blob/main/.github/workflows/python-app.yml#L151-L155

I understand that zfs version has been added, but keep in mind that the zfs --version CLI command has worked fine going all the way back to at least zfs-0.8.3 until and including zfs-2.2.6. Existing programs and scripts rely on this feature for runtime checks and will now break. Please make available again the old behavior to retain compatibility.

@usaleem-ix @amotin I'm not sure, but maybe this JSON related change caused the regression: aa15b60#diff-cf9364a9cff2478f377b7c4f69664b4140102fa2642e79d12d9d35f8b525a3bdR2189

Describe how to reproduce the problem

Include any warning/errors/backtraces from the system logs

[behlendorf]

@whoschek thanks for reporting this, and for the quick fix @robn.

[whoschek]

Thanks, this is confirmed fixed now per https://github.com/whoschek/bzfs/actions/runs/11358211882