Closes: #2144.
- '--ambit' seems to a required argument if there is no default subvolume set on
the filesystem. Add it to prevent error during rollback.
- Description is not a required option for rollback (anymore?) and default
descriptions for the two snapshots are more descriptive.
Tests:
- On a fresh vagrant machine, run snapshot rollback with the patch. It fails.
With the patch, rollback succeeds.
- The description created for the rollback is the default one 'rollback backup'
and 'writable copy of #x'.
Signed-off-by: Sunil Mohan Adapa <sunil@medhas.org>
Reviewed-by: James Valleroy <jvalleroy@mailbox.org>