From 12441061fa4a378d78eb4f172a153bf135d450cc Mon Sep 17 00:00:00 2001
From: John Griffith <john.griffith@solidfire.com>
Date: Thu, 4 Jul 2013 09:25:03 -0600
Subject: [PATCH] Add check for snapshot to Brick LVM.
Adds a check to the LVM code in brick to see if
a snapshot exists. This implements the incorrectly
named "is_busy" method that exists in the cinder LVM driver.
Change-Id: Ia0f6cbd3d5b4561c5368545448abaafa67caf05d
---
cinder/brick/local_dev/lvm.py | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/cinder/brick/local_dev/lvm.py b/cinder/brick/local_dev/lvm.py
index 0066a726e..37953464d 100644
--- a/cinder/brick/local_dev/lvm.py
+++ b/cinder/brick/local_dev/lvm.py
@@ -372,3 +372,13 @@ class LVM(object):
self._execute('lvconvert', '--merge',
snapshot_name, root_helper='sudo',
run_as_root=True)
+
+ def lv_has_snapshot(self, name):
+ out, err = self._execute('lvdisplay', '--noheading',
+ '-C', '-o', 'Attr',
+ '%s/%s' % (self.vg_name, name))
+ if out:
+ out = out.strip()
+ if (out[0] == 'o') or (out[0] == 'O'):
+ return True
+ return False
--
2.45.2