feat(LargeBlock): Rename the VG to use our prefix

We override the variable used by EXTSR for creation/access to the VG.

Signed-off-by: Damien Thenot <[email protected]>

drivers/LargeBlockSR.py

@@ -22,6 +22,7 @@
 import xs_errors
 import os
 import re
+import lvutil
 
 CAPABILITIES = ["SR_PROBE", "SR_UPDATE", "SR_SUPPORTS_LOCAL_CACHING",
                 "VDI_CREATE", "VDI_DELETE", "VDI_ATTACH", "VDI_DETACH",
@@ -43,6 +44,8 @@
     'configuration': CONFIGURATION
 }
 
+LARGEBLOCK_PREFIX = "XSLargeBlock-"
+
 class LargeBlockSR(EXTSR.EXTSR):
     """Emulating 512b drives for EXT storage repository"""
 
@@ -56,6 +59,8 @@ def handles(srtype):
     def load(self, sr_uuid):
         super(LargeBlockSR, self).load(sr_uuid=sr_uuid)
         self.is_deleting = False
+        self.vgname = LARGEBLOCK_PREFIX + sr_uuid
+        self.remotepath = os.path.join("/dev", self.vgname, sr_uuid)
 
     def attach(self, sr_uuid):
         if not self.is_deleting:
@@ -91,6 +96,11 @@ def delete(self, sr_uuid):
         finally:
             self._destroy_emulated_device(old_devices)
             self.is_deleting = False
+    @deviceCheck
+    def probe(self):
+        # We override EXTSR.probe because it uses EXT_PREFIX in this call
+        return lvutil.srlist_toxml(lvutil.scan_srlist(LARGEBLOCK_PREFIX, self.dconf['device']),
+                LARGEBLOCK_PREFIX)
 
     def _create_loopdev(self, dev, new_path):
         cmd = ["losetup", "-f", "-v", "--show", "--sector-size", str(self.LOOP_SECTOR_SIZE), dev]