vyos.utils: T5609: get disk device by partial id

(cherry picked from commit ede0b5b1a19c37547c19d875743e78b0278628d4)

1 files changed, 23 insertions, 0 deletions

diff --git a/python/vyos/utils/disk.py b/python/vyos/utils/disk.py
new file mode 100644
index 000000000..ee540b107
--- /dev/null
+++ b/python/vyos/utils/disk.py
@@ -0,0 +1,23 @@
+# Copyright 2023 VyOS maintainers and contributors <maintainers@vyos.io>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+
+from pathlib import Path
+
+def device_from_id(id):
+    """ Return the device name from (partial) disk id """
+    path = Path('/dev/disk/by-id')
+    for device in path.iterdir():
+        if device.name.endswith(id):
+            return device.readlink().stem