1 files changed, 17 insertions, 0 deletions
diff --git a/ironic_python_agent/utils.py b/ironic_python_agent/utils.py
index 2c71827a..0257cfb1 100644
--- a/ironic_python_agent/utils.py
+++ b/ironic_python_agent/utils.py
@@ -17,6 +17,7 @@ import errno
 import glob
 import io
 import os
+import re
 import shutil
 import subprocess
 import tarfile
@@ -60,6 +61,9 @@ COLLECT_LOGS_COMMANDS = {
 }
 
 
+DEVICE_EXTRACTOR = re.compile(r'^(?:(.*\d)p|(.*\D))(?:\d+)$')
+
+
 def execute(*cmd, **kwargs):
     """Convenience wrapper around ironic_lib's execute() method.
 
@@ -436,3 +440,16 @@ def get_ssl_client_options(conf):
     else:
         cert = None
     return verify, cert
+
+
+def extract_device(part):
+    """Extract the device from a partition name or path.
+
+    :param part: the partition
+    :return: a device if success, None otherwise
+    """
+
+    m = DEVICE_EXTRACTOR.match(part)
+    if not m:
+        return None
+    return (m.group(1) or m.group(2))