csi: volume snapshot list plugin option is required

The RPC for listing volume snapshots requires a plugin ID. Update the
`volume snapshot list` command to find the specific plugin from the
provided prefix.

.changelog/12197.txt

@@ -0,0 +1,3 @@
+```release-note:bug
+csi: Fixed a bug where `volume snapshot list` did not correctly filter by plugin IDs. The `-plugin` parameter is required.
+```

command/volume_snapshot_list.go

@@ -22,8 +22,9 @@ func (c *VolumeSnapshotListCommand) Help() string {
 	helpText := `
 Usage: nomad volume snapshot list [-plugin plugin_id]
 
-  Display a list of CSI volume snapshots along with their
-  source volume ID as known to the external storage provider.
+  Display a list of CSI volume snapshots for a plugin along
+  with their source volume ID as known to the external
+  storage provider.
 
   When ACLs are enabled, this command requires a token with the
   'csi-list-volumes' capability for the plugin's namespace.
@@ -34,8 +35,8 @@ General Options:
 
 List Options:
 
-  -plugin: Display only snapshots managed by a particular plugin. By default
-   this command will query all plugins for their snapshots.
+  -plugin: Display only snapshots managed by a particular plugin. This
+    parameter is required.
 
   -secret
     Secrets to pass to the plugin to list snapshots. Accepts multiple
@@ -45,7 +46,7 @@ List Options:
 }
 
 func (c *VolumeSnapshotListCommand) Synopsis() string {
-	return "Display a list of volume snapshots"
+	return "Display a list of volume snapshots for plugin"
 }
 
 func (c *VolumeSnapshotListCommand) AutocompleteFlags() complete.Flags {
@@ -100,15 +101,17 @@ func (c *VolumeSnapshotListCommand) Run(args []string) int {
 		return 1
 	}
 
-	// filter by plugin if a plugin ID was passed
-	if pluginID != "" {
-		plugs, _, err := client.CSIPlugins().List(&api.QueryOptions{Prefix: pluginID})
-		if err != nil {
-			c.Ui.Error(fmt.Sprintf("Error querying CSI plugins: %s", err))
-			return 1
-		}
-
-		if len(plugs) > 1 {
+	plugs, _, err := client.CSIPlugins().List(&api.QueryOptions{Prefix: pluginID})
+	if err != nil {
+		c.Ui.Error(fmt.Sprintf("Error querying CSI plugins: %s", err))
+		return 1
+	}
+	if len(plugs) == 0 {
+		c.Ui.Error(fmt.Sprintf("No plugins(s) with prefix or ID %q found", pluginID))
+		return 1
+	}
+	if len(plugs) > 1 {
+		if pluginID != plugs[0].ID {
 			out, err := c.csiFormatPlugins(plugs)
 			if err != nil {
 				c.Ui.Error(fmt.Sprintf("Error formatting: %s", err))
@@ -117,13 +120,8 @@ func (c *VolumeSnapshotListCommand) Run(args []string) int {
 			c.Ui.Error(fmt.Sprintf("Prefix matched multiple plugins\n\n%s", out))
 			return 1
 		}
-		if len(plugs) == 0 {
-			c.Ui.Error(fmt.Sprintf("No plugins(s) with prefix or ID %q found", pluginID))
-			return 1
-		}
-
-		pluginID = plugs[0].ID
 	}
+	pluginID = plugs[0].ID
 
 	secrets := api.CSISecrets{}
 	for _, kv := range secretsArgs {

e2e/csi/ebs.go

@@ -176,7 +176,7 @@ func (tc *CSIControllerPluginEBSTest) TestSnapshot(f *framework.F) {
 	f.NoError(err, fmt.Sprintf("could not parse output:\n%v", out))
 	f.Len(snaps, 1, fmt.Sprintf("could not parse output:\n%v", out))
 
-	out, err = e2e.Command("nomad", "volume", "snapshot", "list")
+	out, err = e2e.Command("nomad", "volume", "snapshot", "list", "-plugin", ebsPluginID)
 	requireNoErrorElseDump(f, err, "could not list volume snapshots", tc.pluginJobIDs)
 	f.Contains(out, snaps[0]["ID"],
 		fmt.Sprintf("volume snapshot list did not include expected snapshot:\n%v", out))

website/content/docs/commands/volume/snapshot-list.mdx

@@ -30,11 +30,10 @@ Nomad.
 ## Snapshot List Options
 
 - `-plugin`: Display only snapshots managed by a particular [CSI
-  plugin][csi_plugin]. By default the `snapshot list` command will query all
-  plugins for their snapshots. This flag accepts a plugin ID or prefix. If
-  there is an exact match based on the provided plugin, then that specific
-  plugin will be queried. Otherwise, a list of matching plugins will be
-  displayed.
+  plugin][csi_plugin]. This flag is required and accepts a plugin ID
+  or prefix. If there is an exact match based on the provided plugin,
+  then that specific plugin will be queried. Otherwise, a list of
+  matching plugins will be displayed.
 - `-secret`: Secrets to pass to the plugin to list snapshots. Accepts
   multiple flags in the form `-secret key=value`
 
@@ -54,7 +53,7 @@ snap-67890   vol-fedcba   50GiB  2021-01-04T15:45:00Z  true
 
 List volume snapshots with two secret key/value pairs:
 ```shell-session
-$ nomad volume snapshot list -secret key1=value1 -secret key2=val2
+$ nomad volume snapshot list -plugin aws-ebs0 -secret key1=value1 -secret key2=val2
 Snapshot ID  External ID  Size   Creation Time         Ready?
 snap-12345   vol-abcdef   50GiB  2021-01-03T12:15:02Z  true
 ```