diff --git a/focker.py b/focker.py
index 767f5af..e061106 100644
--- a/focker.py
+++ b/focker.py
@@ -69,9 +69,11 @@ def create_parser():
 
     parser = subparsers.add_parser('list')
     parser.set_defaults(func=command_volume_list)
+    parser.add_argument('--full-sha256', '-f', action='store_true')
 
     parser = subparsers.add_parser('tag')
     parser.set_defaults(func=command_volume_tag)
+    parser.add_argument('reference', type=str)
     parser.add_argument('tags', type=str, nargs='+')
 
     parser = subparsers.add_parser('untag')
diff --git a/image.py b/image.py
index 2de9353..4799c8b 100644
--- a/image.py
+++ b/image.py
@@ -98,10 +98,11 @@ def command_image_list(args):
 
 
 def command_image_prune(args):
+    poolname = zfs_poolname()
     again = True
     while again:
         again = False
-        lst = zfs_parse_output(['zfs', 'list', '-o', 'focker:sha256,focker:tags,origin,name', '-H'])
+        lst = zfs_parse_output(['zfs', 'list', '-o', 'focker:sha256,focker:tags,origin,name', '-H', '-r', poolname + '/focker/images'])
         used = set()
         for r in lst:
             if r[2] == '-':
diff --git a/volume.py b/volume.py
index 1a447e2..a11e5ed 100644
--- a/volume.py
+++ b/volume.py
@@ -1,5 +1,6 @@
 from .misc import random_sha256_hexdigest
 from .zfs import *
+from tabulate import tabulate
 
 
 def command_volume_create(args):
@@ -14,16 +15,23 @@ def command_volume_create(args):
 
 
 def command_volume_prune(args):
-    raise NotImplementedError
+    zfs_prune(focker_type='volume')
 
 
 def command_volume_list(args):
-    raise NotImplementedError
+    poolname = zfs_poolname()
+    lst = zfs_parse_output(['zfs', 'list', '-o', 'name,refer,focker:sha256,focker:tags', '-H', '-r', poolname + '/focker/volumes'])
+    lst = list(filter(lambda a: a[2] != '-', lst))
+    lst = list(map(lambda a: [ a[3], a[1],
+        a[2] if args.full_sha256 else a[2][:7] ], lst))
+    print(tabulate(lst, headers=['Tags', 'Size', 'SHA256']))
 
 
 def command_volume_tag(args):
-    raise NotImplementedError
+    name, _ = zfs_find(args.reference, focker_type='volume')
+    zfs_untag(args.tags)
+    zfs_tag(name, args.tags)
 
 
 def command_volume_untag(args):
-    raise NotImplementedError
+    zfs_untag(args.tags)
diff --git a/zfs.py b/zfs.py
index b578305..f60d3fa 100644
--- a/zfs.py
+++ b/zfs.py
@@ -49,6 +49,26 @@ def zfs_find(reference, focker_type='image', zfs_type='filesystem'):
     return (lst[0][3], lst[0][0])
 
 
+def zfs_prune(focker_type='image'):
+    poolname = zfs_poolname()
+    again = True
+    while again:
+        again = False
+        lst = zfs_parse_output(['zfs', 'list', '-o', 'focker:sha256,focker:tags,origin,name', '-H', '-r', poolname + '/focker/' + focker_type + 's'])
+        used = set()
+        for r in lst:
+            if r[2] == '-':
+                continue
+            used.add(r[2].split('@')[0])
+        for r in lst:
+            if r[0] == '-' or r[1] != '-':
+                continue
+            if r[3] not in used:
+                print('Removing:', r[3])
+                zfs_run(['zfs', 'destroy', '-r', '-f', r[3]])
+                again = True
+
+
 def zfs_clone(name, target_name):
     zfs_run(['zfs', 'clone', name, target_name])