Handle different device outputs for multipath

In some cases the output of the multipath can differ
and we would return a wrong parent device.

Closes-Bug: 2043992
Change-Id: I848d7df798cc736bd5a55eed8fa46110caea1dc3

ironic_python_agent/hardware.py

@@ -273,11 +273,15 @@ def _get_multipath_parent_device(device):
     # size=56G features='1 retain_attached_hw_handler' hwhandler='0' wp=rw
     # `-+- policy='service-time 0' prio=1 status=active
     #   `- 0:0:0:0 sda 8:0  active ready running
+    # Other format:
+    # mpathat (wwid/alias) device_name vendor,product
     try:
         lines = out.splitlines()
-        mpath_device = lines[0].split(' ')[1]
-        # give back something like dm-0 so we can log it.
-        return mpath_device
+        mpath_device_out = lines[0].split(' ')
+        for mpath_device in mpath_device_out:
+            if mpath_device.startswith("dm"):
+                # give back something like dm-0 so we can log it.
+                return mpath_device
     except IndexError:
         # We didn't get any command output, so Nope.
         pass

ironic_python_agent/tests/unit/samples/hardware_samples.py

@@ -1764,7 +1764,7 @@ MULTIPATH_VALID_PATH = '%s is a valid multipath device path'
 MULTIPATH_INVALID_PATH = '%s is not a valid multipath device path'
 
 MULTIPATH_LINKS_DM = (
-    'SUPER_FRIENDLY_NAME %s ATA,INTEL SSDSC2CT06\n'
+    'SUPER_FRIENDLY_ NAME (12345) %s ATA, INTEL SSDSC2CT06\n'
     'size=56G features=\'1 retain_attached_hw_handler\' hwhandler=\'0\' wp=rw\n'  # noqa
     ' `-+- policy=\'service-time 0\' prio=1 status=active\n'
     '  `- 0:0:0:0 device s  8:0  active ready running\n'

releasenotes/notes/fix-multipath-parent-device-e85afad63159250c.yaml

@@ -0,0 +1,5 @@
+---
+fixes:
+  - |
+    Fix the logic to detect the right parent device for a given multipath
+    device.