Nomad version

[root@ip-70-0-14-127 demo]# nomad version
Nomad v1.1.0 (2678c3604bc9530014208bc167415e167fd440fc)

Operating system and Environment details

CentOS Linux 7 (Core)

Issue

"nomad volume snapshot delete" is documented to take a snapshot id:

[root@ip-70-0-14-127 demo]# nomad volume snapshot delete 
This command takes two arguments: <plugin id> <snapshot id>
For additional help try 'nomad volume snapshot delete -help'

However, after trying a few combinations, I noticed the delete only goes through when a snapshot name is provided.

Update: After looking into this more, I found that the snapshot id provided in nomad volume snapshot list is shortened to 12 characters. I was passing this shortened ID to nomad volume snapshot delete, which was not correct. Our snapshot ids are 18 characters. By coincidence, our CSI driver supports deleting snapshots by both name and ID, which explains the deletion succeeding via snapshot name.

Unless I'm missing something, there isn't a way to find the full snapshot id via nomad volume snapshot list. Perhaps a nomad volume snapshot list -json would be useful here? Similar to nomad volume status -json?

Reproduction steps

An example like the follow could allow users to become confused as to why their snapshots aren't being deleted:

[root@ip-70-0-14-127 demo]# nomad volume snapshot create pxvol1 snap2
Snapshot ID   Volume ID     Size    Create Time           Ready?
111599152205  430708984379  10 GiB  1970-01-01T00:00:01Z  true
[root@ip-70-0-14-127 demo]# nomad volume snapshot list
Snapshot ID   Volume ID     Size    Create Time  Ready?
111599152205  430708984379  10 GiB  <none>       true
729104150236  338826921232  10 GiB  <none>       true
[root@ip-70-0-14-127 demo]# nomad volume snapshot delete portworx 111599152205
[root@ip-70-0-14-127 demo]# nomad volume snapshot list
Snapshot ID   Volume ID     Size    Create Time  Ready?
111599152205  430708984379  10 GiB  <none>       true
729104150236  338826921232  10 GiB  <none>       true
[root@ip-70-0-14-127 demo]# nomad volume snapshot delete portworx snap2
[root@ip-70-0-14-127 demo]# nomad volume snapshot list
Snapshot ID   Volume ID     Size    Create Time  Ready?
729104150236  338826921232  10 GiB  <none>       true

Expected Result

nomad volume snapshot delete docs and CLI help should reflect that this command takes a snapshot name
OR
nomad volume snapshot delete implementation should instead take a snapshot_id as documented

nomad volume snapshot list should support a -json option.

Actual Result

nomad volume snapshot delete only works when a snapshot name is passed.

Option is not supported yet

Job file (if appropriate)

n/a

Nomad Server logs (if appropriate)

n/a

Nomad Client logs (if appropriate)

n/a