conf: Remove deprecated 'remap_vbd_dev' option

This flag was deprecated in a previous cycle. The flag, the feature that
the flag enabled, and a related flag that was not deprecated but should
have been, can now be removed.

Change-Id: I6b38b4e69c0aace4b109f0d083ef665a5c032a15

nova/conf/xenserver.py

@@ -374,30 +374,6 @@ The iSCSI Target Port.
 This option represents the port of the iSCSI Target. If the
 target port is not present in the connection information from the
 volume provider then the value from this option is taken.
-"""),
-    # NOTE(sirp): This is a work-around for a bug in Ubuntu Maverick,
-    # when we pull support for it, we should remove this
-    cfg.BoolOpt('remap_vbd_dev',
-        default=False,
-        deprecated_for_removal=True,
-        deprecated_since='15.0.0',
-        deprecated_reason="""
-This option provided a workaround for issues in Ubuntu Maverick, which
-was released in April 2010 and was dropped from support in April 2012.
-There's no reason to continue supporting this option.
-""",
-        help="""
-Used to enable the remapping of VBD dev.
-(Works around an issue in Ubuntu Maverick)
-"""),
-    cfg.StrOpt('remap_vbd_dev_prefix',
-        default='sd',
-        help="""
-Specify prefix to remap VBD dev to (ex. /dev/xvdb -> /dev/sdb).
-
-Related options:
-
-* If `remap_vbd_dev` is set to False this option has no impact.
 """),
     cfg.BoolOpt('independent_compute',
         default=False,

nova/virt/xenapi/vm_utils.py

@@ -2100,27 +2100,6 @@ def _wait_for_vhd_coalesce(session, instance, sr_ref, vdi_ref,
     raise exception.NovaException(msg)
 
 
-def _remap_vbd_dev(dev):
-    """Return the appropriate location for a plugged-in VBD device
-
-    Ubuntu Maverick moved xvd? -> sd?. This is considered a bug and will be
-    fixed in future versions:
-        https://bugs.launchpad.net/ubuntu/+source/linux/+bug/684875
-
-    For now, we work around it by just doing a string replace.
-    """
-    # NOTE(sirp): This hack can go away when we pull support for Maverick
-    should_remap = CONF.xenserver.remap_vbd_dev
-    if not should_remap:
-        return dev
-
-    old_prefix = 'xvd'
-    new_prefix = CONF.xenserver.remap_vbd_dev_prefix
-    remapped_dev = dev.replace(old_prefix, new_prefix)
-
-    return remapped_dev
-
-
 def _wait_for_device(session, dev, dom0, max_seconds):
     """Wait for device node to appear."""
     dev_path = utils.make_dev_path(dev)
@@ -2179,14 +2158,9 @@ def vdi_attached(session, vdi_ref, read_only=False, dom0=False):
         session.VBD.plug(vbd_ref, this_vm_ref)
         try:
             LOG.debug('Plugging VBD %s done.', vbd_ref)
-            orig_dev = session.call_xenapi("VBD.get_device", vbd_ref)
-            LOG.debug('VBD %(vbd_ref)s plugged as %(orig_dev)s',
-                      {'vbd_ref': vbd_ref, 'orig_dev': orig_dev})
-            dev = _remap_vbd_dev(orig_dev)
-            if dev != orig_dev:
-                LOG.debug('VBD %(vbd_ref)s plugged into wrong dev, '
-                          'remapping to %(dev)s',
-                          {'vbd_ref': vbd_ref, 'dev': dev})
+            dev = session.call_xenapi("VBD.get_device", vbd_ref)
+            LOG.debug('VBD %(vbd_ref)s plugged as %(dev)s',
+                      {'vbd_ref': vbd_ref, 'dev': dev})
             _wait_for_device(session, dev, dom0,
                              CONF.xenserver.block_device_creation_timeout)
             yield dev

releasenotes/notes/remove-deprecated-remap_vbd_dev-opt-22c1898f25b58280.yaml

@@ -0,0 +1,8 @@
+---
+upgrade:
+  - |
+    The following deprecated configuration options have been removed from the
+    ``xenserver`` section of ``nova.conf``:
+
+    - ``remap_vbd_dev``
+    - ``remap_vbd_dev_prefix``