From: Mohamad Gebai <mgebai@suse.com>
Date: Sun, 31 Mar 2019 17:04:40 +0000 (-0400)
Subject: ceph-volume: add reduce_vg function
X-Git-Tag: v15.1.0~2912^2~8
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=ce0184b5d7f24f2b3b6a9491e0f3c1c847b8c0e7;p=ceph.git

ceph-volume: add reduce_vg function

Signed-off-by: Mohamad Gebai <mgebai@suse.com>
---

diff --git a/src/ceph-volume/ceph_volume/api/lvm.py b/src/ceph-volume/ceph_volume/api/lvm.py
index ca05035b0bd1..e96725b7193a 100644
--- a/src/ceph-volume/ceph_volume/api/lvm.py
+++ b/src/ceph-volume/ceph_volume/api/lvm.py
@@ -464,6 +464,29 @@ def extend_vg(vg, devices):
     return vg
 
 
+def reduce_vg(vg, devices):
+    """
+    Reduce a Volume Group. Command looks like::
+
+        vgreduce --force --yes group_name [device, ...]
+
+    :param vg: A VolumeGroup object
+    :param devices: A list of devices to remove from the VG. Optionally, a
+                    single device (as a string) can be used.
+    """
+    if not isinstance(devices, list):
+        devices = [devices]
+    process.run([
+        'vgreduce',
+        '--force',
+        '--yes',
+        vg.name] + devices
+    )
+
+    vg = get_vg(vg_name=vg.name)
+    return vg
+
+
 def remove_vg(vg_name):
     """
     Removes a volume group.