From: Venky Shankar <vshankar@redhat.com>
Date: Wed, 20 Nov 2019 13:36:52 +0000 (-0500)
Subject: mgr/volumes: snapshot util module
X-Git-Tag: v14.2.8~49^2~23
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=cb592a6228dd41430ccc5bf0d5f84987920eafeb;p=ceph.git

mgr/volumes: snapshot util module

Signed-off-by: Venky Shankar <vshankar@redhat.com>
(cherry picked from commit b30f0cb18543d7bcd9161b4e39d163425df19a27)
---

diff --git a/src/pybind/mgr/volumes/fs/operations/snapshot_util.py b/src/pybind/mgr/volumes/fs/operations/snapshot_util.py
new file mode 100644
index 00000000000..2223c58e5c0
--- /dev/null
+++ b/src/pybind/mgr/volumes/fs/operations/snapshot_util.py
@@ -0,0 +1,30 @@
+import os
+import errno
+
+import cephfs
+
+from ..exception import VolumeException
+
+def mksnap(fs, snappath):
+    """
+    Create a snapshot, or do nothing if it already exists.
+    """
+    try:
+        # snap create does not accept mode -- use default
+        fs.mkdir(snappath, 0o755)
+    except cephfs.ObjectExists:
+        return
+    except cephfs.Error as e:
+        raise VolumeException(-e.args[0], e.args[1])
+
+def rmsnap(fs, snappath):
+    """
+    Remove a snapshot
+    """
+    try:
+        fs.stat(snappath)
+        fs.rmdir(snappath)
+    except cephfs.ObjectNotFound:
+        raise VolumeException(-errno.ENOENT, "snapshot '{0}' does not exist".format(os.path.basename(snappath)))
+    except cephfs.Error as e:
+        raise VolumeException(-e.args[0], e.args[1])