CA-401068: if iSCSI device path is not found scan the bus

It's possible that a new LUN has been exported since we created the iSCSI session and we might not see it. Try to scan the iSCSI bus and see if the expected device appears. Signed-off-by: Mark Syms <[email protected]>
MarkSymsCtx · Nov 1, 2024 · 698dd99 · 698dd99
1 parent 3e4c041
commit 698dd99
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/drivers/BaseISCSI.py b/drivers/BaseISCSI.py
@@ -421,6 +421,10 @@ def attach(self, sr_uuid):
             if self.mpath == 'true':
                 self.mpathmodule.refresh(self.dconf['SCSIid'], 0)
             dev_path = os.path.join("/dev/disk/by-scsid", self.dconf['SCSIid'])
+            if not os.path.exists(dev_path):
+                # LUN may have been added to the SAN since the session was created
+                iscsilib.refresh_luns(self.targetIQN, self.target)
+
             if not os.path.exists(dev_path):
                 raise xs_errors.XenError('ConfigSCSIid')