From: Jan Fajerski <jfajerski@suse.com>
Date: Thu, 12 Dec 2019 08:28:27 +0000 (+0100)
Subject: util/system: add unmount_tmpfs helper
X-Git-Tag: v15.1.0~522^2~1
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=705ed1110138b1e7c77768f97d5acda4a76d868f;p=ceph.git

util/system: add unmount_tmpfs helper

Thsi unmounts a path if and only if it's a tmpfs mount.

Signed-off-by: Jan Fajerski <jfajerski@suse.com>
---

diff --git a/src/ceph-volume/ceph_volume/util/system.py b/src/ceph-volume/ceph_volume/util/system.py
index 5aaca59af7557..775be4e708be7 100644
--- a/src/ceph-volume/ceph_volume/util/system.py
+++ b/src/ceph-volume/ceph_volume/util/system.py
@@ -164,6 +164,19 @@ class tmp_mount(object):
             encryption.dmcrypt_close(self.device)
 
 
+def unmount_tmpfs(path):
+    """
+    Removes the mount at the given path iff the path is a tmpfs mount point.
+    Otherwise no action is taken.
+    """
+    _out, _err, rc = process.call(['findmnt', '-t', 'tmpfs', '-M', path])
+    if rc != 0:
+        logger.info('{} does not appear to be a tmpfs mount'.format(path))
+    else:
+        logger.info('Unmounting tmpfs path at {}'.format( path))
+        unmount(path)
+
+
 def unmount(path):
     """
     Removes mounts at the given path