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# Copyright (C) 2017-2018 Red Hat, Inc. <http://www.redhat.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
"""
Description : Modules for enabling and disabling
shared storoge
"""
import time
from glusto.core import Glusto as g
from glustolibs.gluster.volume_ops import set_volume_options
def enable_shared_storage(mnode):
"""
Enables the shared storage
Args:
mnode (str) : Node on which command is to be executed
Returns:
bool : True if successfully enabled shared storage.
False otherwise.
"""
option = {"cluster.enable-shared-storage": "enable"}
ret = set_volume_options(mnode, "all", option)
if not ret:
g.log.error("Failed to enable shared storage")
return False
g.log.info("Successfully enabled shared storage option")
return True
def disable_shared_storage(mnode):
"""
Enables the shared storage
Args:
mnode (str) : Node on which command is to be executed
Returns:
bool : True if successfully disabled shared storage.
False otherwise.
"""
option = {"cluster.enable-shared-storage": "disable"}
ret = set_volume_options(mnode, "all", option)
if not ret:
g.log.error("Failed to disable shared storage")
return False
g.log.info("Successfully disabled shared storage option")
return True
def is_shared_volume_mounted(mnode):
"""
Checks shared volume mounted after enabling it
Args:
mnode (str) : Node on which command is to be executed
Returns:
bool : True if successfully mounted shared volume.
False otherwise.
"""
halt = 20
counter = 0
path = "/run/gluster/shared_storage"
while counter < halt:
_, out, _ = g.run(mnode, "df -h")
if path in out:
g.log.info("Shared volume mounted successfully")
return True
else:
time.sleep(2)
counter = counter + 2
g.log.error("Shared volume not mounted")
return False
def is_shared_volume_unmounted(mnode):
"""
Checks shared volume unmounted after disabling it
Args:
mnode (str) : Node on which command is to be executed
Returns:
bool : True if successfully unmounted shared volume.
False otherwise.
"""
halt = 20
counter = 0
path = "/run/gluster/shared_storage"
while counter < halt:
_, out, _ = g.run(mnode, "df -h")
if path not in out:
g.log.info("Shared volume unmounted successfully")
return True
else:
time.sleep(2)
counter = counter + 2
g.log.error("Shared volume not unmounted")
return False
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