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# This file is part of DiSTAF
# Copyright (C) 2015-2016 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.
from distaf.util import tc
class GlusterMount():
"""Gluster Mount class
Args:
mount (dict): Mount dict with 'mount_protocol', 'mountpoint',
'server', 'client', 'volname', 'options' as keys
Returns:
Instance of GlusterMount class
"""
client_register = 0
def __init__(self, mount):
if mount['protocol']:
self.mounttype = mount['protocol']
else:
self.mounttype = "glusterfs"
if mount['mountpoint']:
self.mountpoint = mount['mountpoint']
else:
self.mountpoint = "/mnt/%s" % self.mounttype
self.server_system = mount['server']
self.client_system = mount['client']
self.volname = mount['volname']
self.options = mount['options']
def mount(self):
"""Mounts the volume
Args:
uses instance args passed at init
Returns:
bool: True on success and False on failure.
"""
(_retcode, _, _) = mount_volume(self.volname,
mtype=self.mounttype,
mpoint=self.mountpoint,
mserver=self.server_system,
mclient=self.client_system,
options=self.options)
if _retcode == 0:
return True
else:
return False
def is_mounted(self):
"""Tests for mount on client
Args:
uses instance args passed at init
Returns:
bool: True on success and False on failure.
"""
_retcode = is_mounted(self.volname,
mpoint=self.mountpoint,
mserver=self.server_system,
mclient=self.client_system)
if _retcode:
return True
else:
return False
def unmount(self):
"""Unmounts the volume
Args:
uses instance args passed at init
Returns:
bool: True on success and False on failure.
"""
(_retcode, _, _) = umount_volume(self.client_system,
self.mountpoint)
if _retcode == 0:
return True
else:
return False
def is_mounted(volname, mpoint, mserver, mclient):
"""Check if mount exist.
Args:
volname (str): Name of the volume
mpoint (str): Mountpoint dir
mserver (str): Server to which it is mounted to
mclient (str): Client from which it is mounted.
Returns:
bool: True if mounted and False otherwise.
"""
# python will error on missing arg, so just checking for empty args here
if not volname or not mpoint or not mserver or not mclient:
tc.logger.error("Missing arguments for mount.")
return False
ret, _, _ = tc.run(mclient, "mount | grep %s | grep %s | grep \"%s\""
% (volname, mpoint, mserver), verbose=False)
if ret == 0:
tc.logger.debug("Volume %s is mounted at %s:%s" % (volname,
mclient,
mpoint))
return True
else:
tc.logger.error("Volume %s is not mounted at %s:%s" % (volname,
mclient,
mpoint))
return False
def mount_volume(volname, mtype='glusterfs', mpoint='/mnt/glusterfs',
mserver='', mclient='', options=''):
"""Mount the gluster volume with specified options.
Args:
volname (str): Name of the volume to mount.
Kwargs:
mtype (str): Protocol to be used to mount.
mpoint (str): Mountpoint dir.
mserver (str): Server to mount.
mclient (str): Client from which it has to be mounted.
option (str): Options for the mount command.
Returns:
tuple: Tuple containing three elements (ret, out, err).
(0, '', '') if already mounted.
(ret, out, err) of mount commnd execution otherwise.
"""
global tc
if mserver == '':
mserver = tc.servers[0]
if mclient == '':
mclient = tc.clients[0]
if options != '':
options = "-o %s" % options
if mtype == 'nfs' and options != '':
options = "%s" % options
elif mtype == 'nfs' and options == '':
options = '-o vers=3'
if is_mounted(volname, mpoint, mserver, mclient):
tc.logger.debug("Volume %s is already mounted at %s" %
(volname, mpoint))
return (0, '', '')
mcmd = ("mount -t %s %s %s:/%s %s" %
(mtype, options, mserver, volname, mpoint))
_, _, _ = tc.run(mclient, "test -d %s || mkdir -p %s" % (mpoint, mpoint),
verbose=False)
return tc.run(mclient, mcmd)
def umount_volume(mclient, mpoint):
"""Unmounts the mountpoint.
Args:
mclient (str): Client from which it has to be mounted.
mpoint (str): Mountpoint dir.
Returns:
tuple: Tuple containing three elements (ret, out, err) as returned by
umount command execution.
"""
cmd = ("umount %s || umount -f %s || umount -l %s" %
(mpoint, mpoint, mpoint))
return tc.run(mclient, cmd)
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