CA-404517: use wipefs to prepare the volume for storage-init

And have lvcreate wipe signatures as well.

Signed-off-by: Mark Syms <mark.syms@cloud.com>

Author: MarkSymsCtx

drivers/EXTSR.py

@@ -190,6 +190,7 @@ def create(self, sr_uuid, size):
                 size_mb = stats['freespace'] // (1024 * 1024)
             assert(size_mb > 0)
             cmd += ["-L", str(size_mb), self.vgname]
+            cmd += ["-W", "y", "--yes"]
             text = util.pread(cmd)
 
             cmd = ["lvchange", "-ay", self.remotepath]

drivers/lvutil.py

@@ -599,7 +599,7 @@ def create(name, size, vgname, tag=None, size_in_percentage=None):
     if tag:
         cmd.extend(["--addtag", tag])
 
-    cmd.extend(['-W', 'n'])
+    cmd.extend(['-W', 'y', '--yes'])
     cmd_lvm(cmd)
 
 

scripts/storage-init

@@ -50,8 +50,8 @@ diskprep() {
     done
 
     # erase the start of the volume to get rid of other metadata:
-    echo "* Erasing start of volume"
-    dd if=/dev/zero of=${disk} count=10 bs=1024k &>/dev/null
+    echo "* Erasing any filesystems on volume"
+    wipefs -a ${disk}
 
     echo "Complete."
 }

tests/lvmlib.py

@@ -79,6 +79,7 @@ def fake_lvcreate(self, args, stdin):
         parser.add_argument("--inactive", dest='inactive', action='store_true')
         parser.add_argument("--zero", dest='zero', default='y')
         parser.add_argument("-W", dest='wipe_sig')
+        parser.add_argument("--yes", dest='all_yes', action="store_true")
         parser.add_argument('vgname')
         try:
             args = parser.parse_args(args[1:])

tests/test_storage_init.py

@@ -89,6 +89,7 @@ def setUp(self):
         self.create_mock_command("xe")
 
         self.create_dummy_command("dd")
+        self.create_dummy_command("wipefs")
         self.create_dummy_command("logger")
         self.create_dummy_command("pvremove")
         self.create_dummy_command("pvs")