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# Copyright (C) 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 02110-131 USA.
"""
Description:
Rebalance with add brick and log time taken for lookup
"""
from time import time
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.rebalance_ops import (rebalance_start,
wait_for_rebalance_to_complete)
from glustolibs.gluster.volume_libs import expand_volume
@runs_on([['distributed', 'distributed-replicated', 'distributed-arbiter',
'distributed-dispersed'], ['glusterfs']])
class TestRebalanceWithAddBrickAndLookup(GlusterBaseClass):
""" Rebalance with add brick and do lookup """
def setUp(self):
"""Setup Volume"""
# Calling GlusterBaseClass setUp
self.get_super_method(self, 'setUp')()
self.all_mounts_procs = []
# Setup and mount the volume
ret = self.setup_volume_and_mount_volume(mounts=self.mounts)
if not ret:
raise ExecutionError("Failed to Setup Volume and Mount it")
def test_rebalance_with_add_brick_and_lookup(self):
"""
Rebalance with add brick and then lookup on mount
- Create a Distributed-Replicated volume.
- Create deep dirs(200) and 100 files on the deepest directory.
- Expand volume.
- Initiate rebalance
- Once rebalance is completed, do a lookup on mount and time it.
"""
# Create Deep dirs.
cmd = (
"cd %s/; for i in {1..200};do mkdir dir${i}; cd dir${i};"
" if [ ${i} -eq 100 ]; then for j in {1..100}; do touch file${j};"
" done; fi; done;" % (self.mounts[0].mountpoint))
ret, _, _ = g.run(self.clients[0], cmd)
self.assertEqual(ret, 0, "Failed to create the deep dirs and files")
g.log.info("Deep dirs and files created.")
# Expand the volume.
ret = expand_volume(self.mnode, self.volname, self.servers,
self.all_servers_info)
self.assertTrue(ret, ("Failed to expand the volume %s", self.volname))
g.log.info("Expanding volume is successful on "
"volume %s", self.volname)
# Start Rebalance.
ret, _, _ = rebalance_start(self.mnode, self.volname)
self.assertEqual(ret, 0, ("Failed to start rebalance on the volume "
"%s", self.volname))
g.log.info("Successfully started rebalance on the volume %s",
self.volname)
# Wait for rebalance to complete
ret = wait_for_rebalance_to_complete(self.mnode, self.volname,
timeout=500)
self.assertTrue(ret, ("Rebalance is not yet complete on the volume "
"%s", self.volname))
g.log.info("Rebalance is successfully complete on the volume %s",
self.volname)
# Do a lookup on the mountpoint and note the time taken to run.
# The time used for comparison is taken as a benchmark on using a
# RHGS 3.5.2 for this TC. For 3.5.2, the time takes came out to be
# 4 seconds. Now the condition for subtest to pass is for the lookup
# should not be more than 10% of this value, i.e. 4.4 seconds.
cmd = ("ls -R %s/" % (self.mounts[0].mountpoint))
start_time = time()
ret, _, _ = g.run(self.clients[0], cmd)
end_time = time()
self.assertEqual(ret, 0, "Failed to do a lookup")
time_taken = end_time - start_time
self.assertTrue(time_taken <= 4.4, "Lookup takes more time "
"than the previously benchmarked value.")
g.log.info("Lookup took : %d seconds", time_taken)
def tearDown(self):
"""tear Down callback"""
# Unmount Volume and cleanup.
ret = self.unmount_volume_and_cleanup_volume(mounts=self.mounts)
if not ret:
raise ExecutionError("Filed to Unmount Volume and "
"Cleanup Volume")
g.log.info("Successful in Unmount Volume and cleanup.")
# Calling GlusterBaseClass tearDown
self.get_super_method(self, 'tearDown')()
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