targetcli-fb/rbd-support.patch

From dc250fa879939702bdf69e561cb9041a57f997ea Mon Sep 17 00:00:00 2001
From: Mike Christie <mchristi@redhat.com>
Date: Tue, 10 Apr 2018 17:31:32 +0200
Subject: [PATCH 4/4] rbd support

targetcli-fb-rbd.patch obtained from:
https://marc.info/?l=ceph-devel&m=143816209010058

[ddiss@suse.de: accept and propagate wwn parameter]
Reviewed-by: David Disseldorp <ddiss@suse.de>
---
 targetcli/ui_backstore.py |   59 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 59 insertions(+)

--- a/targetcli/ui_backstore.py
+++ b/targetcli/ui_backstore.py
@@ -29,6 +29,7 @@ import stat
 from configshell_fb import ExecutionError
 from rtslib_fb import BlockStorageObject, FileIOStorageObject
 from rtslib_fb import PSCSIStorageObject, RDMCPStorageObject, UserBackedStorageObject
+from rtslib_fb import RBDStorageObject
 from rtslib_fb import ALUATargetPortGroup
 from rtslib_fb import RTSLibError
 from rtslib_fb import RTSRoot
@@ -281,6 +282,7 @@ class UIBackstores(UINode):
         UIRDMCPBackstore(self)
         UIFileIOBackstore(self)
         UIBlockBackstore(self)
+        UIRBDBackstore(self)
 
         for name, iface, prop_dict in self._user_backstores():
             UIUserBackedBackstore(self, name, iface, prop_dict)
@@ -589,6 +591,48 @@ class UIBlockBackstore(UIBackstore):
             completions = [completions[0] + ' ']
         return completions
 
+class UIRBDBackstore(UIBackstore):
+    '''
+    RBD backstore UI.
+    '''
+    def __init__(self, parent):
+        self.so_cls = UIRBDStorageObject
+        UIBackstore.__init__(self, 'rbd', parent)
+
+    def ui_command_create(self, name, dev, readonly=None, wwn=None):
+        '''
+        Creates an RBD Storage object. I{dev} is the path to the RBD
+        block device to use.
+        '''
+        self.assert_root()
+
+        ro_string = self.ui_eval_param(readonly, 'string', None)
+        if ro_string == None:
+            # attempt to detect block device readonly state via ioctl
+            readonly = blk_dev_ro_check(dev)
+        else:
+            readonly = self.ui_eval_param(readonly, 'bool', False)
+
+        wwn = self.ui_eval_param(wwn, 'string', None)
+
+        so = RBDStorageObject(name, dev, readonly=readonly, wwn=wwn)
+        ui_so = UIRBDStorageObject(so, self)
+        self.setup_model_alias(so)
+        self.shell.log.info("Created RBD storage object %s using %s."
+                            % (name, dev))
+        return self.new_node(ui_so)
+
+    def ui_complete_create(self, parameters, text, current_param):
+        '''
+        Auto-completes the device name
+        '''
+        if current_param != 'dev':
+            return []
+        completions = complete_path(text, stat.S_ISBLK)
+        if len(completions) == 1 and not completions[0].endswith('/'):
+            completions = [completions[0] + ' ']
+        return completions
+
 
 class UIUserBackedBackstore(UIBackstore):
     '''
@@ -791,6 +835,21 @@ class UIBlockStorageObject(UIStorageObje
         return ("%s (%s) %s%s %s" % (so.udev_path, bytes_to_human(so.size),
                                    ro_str, wb_str, so.status), True)
 
+class UIRBDStorageObject(UIStorageObject):
+    def summary(self):
+        so = self.rtsnode
+
+        if so.write_back:
+            wb_str = "write-back"
+        else:
+            wb_str = "write-thru"
+
+        ro_str = ""
+        if so.readonly:
+            ro_str = "ro "
+
+        return ("%s (%s) %s%s %s" % (so.udev_path, bytes_to_human(so.size),
+                                   ro_str, wb_str, so.status), True)
 
 class UIUserBackedStorageObject(UIStorageObject):
     def summary(self):