OMV 3.0.80, Snapraid 3.7.1
After a fresh install I get this error:
root@OpenMediaVault:/usr/sbin# omv-snapraid-diff
/usr/sbin/omv-snapraid-diff: line 365: [: -eq: unary operator expected
Apparently the pre-check setting has no default value set after installation. If I disable/enable it on the GUI and apply, the value gets added in the config and the above error disappears.