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# Copyright (C) 2017-2020 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.
import random
from glusto.core import Glusto as g
from glustolibs.gluster.exceptions import ExecutionError
from glustolibs.gluster.gluster_base_class import GlusterBaseClass, runs_on
from glustolibs.gluster.lib_utils import form_bricks_list
from glustolibs.gluster.volume_ops import (volume_create,
set_volume_options, volume_start)
from glustolibs.gluster.snap_ops import snap_create, snap_activate
from glustolibs.gluster.peer_ops import (
peer_detach_servers,
peer_probe_servers)
@runs_on([['distributed'], ['glusterfs']])
class TestSnapInfoOnPeerDetachedNode(GlusterBaseClass):
def tearDown(self):
ret = peer_probe_servers(self.mnode, self.servers)
if not ret:
raise ExecutionError("Failed to peer probe servers")
# stopping the volume and Cleaning up the volume
ret = self.cleanup_volume()
if not ret:
raise ExecutionError("Failed Cleanup the Volume %s" % self.volname)
g.log.info("Volume deleted successfully : %s", self.volname)
# Calling GlusterBaseClass tearDown
self.get_super_method(self, 'tearDown')()
def test_snap_info_from_detached_node(self):
# pylint: disable=too-many-statements
"""
Create a volume with single brick
Create a snapshot
Activate the snapshot created
Enabled uss on the volume
Validated snap info on all the nodes
Peer detach one node
Validate /var/lib/glusterd/snaps on the detached node
Probe the detached node
"""
# Creating volume with single brick on one node
servers_info_single_node = {self.servers[0]:
self.all_servers_info[self.servers[0]]}
bricks_list = form_bricks_list(self.mnode, self.volname,
1, self.servers[0],
servers_info_single_node)
ret, _, _ = volume_create(self.servers[0], self.volname, bricks_list)
self.assertEqual(ret, 0, "Volume creation failed")
g.log.info("Volume %s created successfully", self.volname)
# Create a snapshot of the volume without volume start should fail
self.snapname = "snap1"
ret, _, _ = snap_create(
self.mnode, self.volname, self.snapname, timestamp=False)
self.assertNotEqual(
ret, 0, "Snapshot created without starting the volume")
g.log.info("Snapshot creation failed as expected")
# Start the volume
ret, _, _ = volume_start(self.mnode, self.volname)
self.assertEqual(
ret, 0, "Failed to start the volume %s" % self.volname)
g.log.info("Volume start succeeded")
# Create a snapshot of the volume after volume start
ret, _, _ = snap_create(
self.mnode, self.volname, self.snapname, timestamp=False)
self.assertEqual(
ret, 0, "Snapshot creation failed on the volume %s" % self.volname)
g.log.info("Snapshot create succeeded")
# Activate snapshot created
ret, _, err = snap_activate(self.mnode, self.snapname)
self.assertEqual(
ret, 0, "Snapshot activate failed with following error %s" % (err))
g.log.info("Snapshot activated successfully")
# Enable uss
self.vol_options['features.uss'] = 'enable'
ret = set_volume_options(self.mnode, self.volname, self.vol_options)
self.assertTrue(ret, "gluster volume set %s features.uss "
"enable failed" % self.volname)
g.log.info("gluster volume set %s features.uss "
"enable successfully", self.volname)
# Validate files /var/lib/glusterd/snaps on all the servers is same
self.pathname = "/var/lib/glusterd/snaps/%s" % self.snapname
for server in self.servers:
conn = g.rpyc_get_connection(server)
ret = conn.modules.os.path.isdir(self.pathname)
self.assertTrue(ret, "%s directory doesn't exist on node %s" %
(self.pathname, server))
g.log.info("%s path exists on node %s", self.pathname, server)
g.rpyc_close_deployed_servers()
# Peer detach one node
self.random_node_peer_detach = random.choice(self.servers[1:])
ret = peer_detach_servers(self.mnode,
self.random_node_peer_detach, validate=True)
self.assertTrue(ret, "Peer detach of node: %s failed" %
self.random_node_peer_detach)
g.log.info("Peer detach succeeded")
# /var/lib/glusterd/snaps/<snapname> directory should not present
conn = g.rpyc_get_connection(self.random_node_peer_detach)
ret = conn.modules.os.path.isdir(self.pathname)
self.assertFalse(ret, "%s directory should not exist on the peer"
"which is detached from cluster%s" % (
self.pathname, self.random_node_peer_detach))
g.log.info("Expected: %s path doesn't exist on peer detached node %s",
self.pathname, self.random_node_peer_detach)
g.rpyc_close_deployed_servers()
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