Add column names at top of output, this allows easier understanding
of what each column means.
Use leading spaces on the percentage column so that this is lined up.
Switch out the 1/0 from the active column with the actual status
(active, inactive, disabled).
Show N/A if storage is disabled.
Use $res->{total} instead of calculating a sum of used and available.
Remove wrong rounding - if we want to display 2 digits from the
fractional part we would need to add 0.005 not 0.5, this made the
result quite wrong depending on the storage size.
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
All of them have a `+size` prefix to show that they're not
"pure raw" or "pure tar" streams, because some storage may
need to know in advance how much storage to allocate.
The formats are explained in comments.
PVE::Storage::Plugin now has default implementations for
these for non-incremental streams exporting the current
(rather than a snapshot state).
To use qcow2 or vmdk formats $with_snapshots must be true,
otherwise raw/tar will be used where $with_snapshots must
be false.
This deletes a snapshot on *success*, done directly in the
CLI handler, as the rollback/delete on failure is already
happening inside the plugin's import method.
