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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:
Test Cases in this module tests the
Creation of clone from snapshot of one volume.
"""
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.mount_ops import mount_volume, is_mounted
from glustolibs.gluster.volume_ops import volume_start
from glustolibs.gluster.volume_libs import cleanup_volume, expand_volume
from glustolibs.gluster.rebalance_ops import (rebalance_start,
rebalance_status,
wait_for_rebalance_to_complete)
from glustolibs.gluster.volume_libs import get_subvols
from glustolibs.gluster.snap_ops import (snap_create,
snap_activate,
snap_clone)
from glustolibs.misc.misc_libs import upload_scripts
@runs_on([['distributed', 'distributed-replicated'],
['glusterfs']])
class SnapshotRebalance(GlusterBaseClass):
@classmethod
def setUpClass(cls):
GlusterBaseClass.setUpClass.im_func(cls)
cls.snap = "snap0"
cls.clone = "clone1"
cls.mount1 = "/mnt/clone1"
# Upload io scripts for running IO on mounts
g.log.info("Upload io scripts to clients %s for running IO on "
"mounts", cls.clients)
script_local_path = ("/usr/share/glustolibs/io/scripts/"
"file_dir_ops.py")
cls.script_upload_path = ("/usr/share/glustolibs/io/scripts/"
"file_dir_ops.py")
ret = upload_scripts(cls.clients, script_local_path)
if not ret:
raise ExecutionError("Failed to upload IO scripts "
"to clients ")
g.log.info("Successfully uploaded IO scripts to clients")
def check_arequal(self):
# Check arequals
# get the subvolumes
g.log.info("Starting to get sub-volumes for volume %s", self.clone)
subvols_dict = get_subvols(self.mnode, self.clone)
num_subvols = len(subvols_dict['volume_subvols'])
g.log.info("Number of subvolumes in volume %s:", num_subvols)
# Get arequals and compare
for i in range(0, num_subvols):
# Get arequal for first brick
subvol_brick_list = subvols_dict['volume_subvols'][i]
node, brick_path = subvol_brick_list[0].split(':')
command = ('arequal-checksum -p %s '
'-i .glusterfs -i .landfill -i .trashcan'
% brick_path)
ret, arequal, _ = g.run(node, command)
first_brick_total = arequal.splitlines()[-1].split(':')[-1]
# Get arequal for every brick and compare with first brick
for brick in subvol_brick_list:
node, brick_path = brick.split(':')
command = ('arequal-checksum -p %s '
'-i .glusterfs -i .landfill -i .trashcan'
% brick_path)
ret, brick_arequal, _ = g.run(node, command)
self.assertFalse(ret,
'Failed to get arequal on brick %s'
% brick)
g.log.info('Getting arequal for %s is successful', brick)
brick_total = brick_arequal.splitlines()[-1].split(':')[-1]
self.assertEqual(first_brick_total, brick_total,
'Arequals for subvol and %s are not equal'
% brick)
g.log.info('Arequals for subvol and %s are equal', brick)
g.log.info('All arequals are equal for %s', self.volname)
def setUp(self):
# SetUp volume and Mounting the volume
GlusterBaseClass.setUp.im_func(self)
g.log.info("Starting to SetUp Volume")
ret = self.setup_volume_and_mount_volume(mounts=self.mounts)
if not ret:
raise ExecutionError("Failed to setup volume %s" % self.volname)
g.log.info("Volume %s has been setup successfully", self.volname)
def test_snap_rebalance(self):
# pylint: disable=too-many-statements, too-many-locals
"""
Snapshot rebalance contains tests which verifies snapshot clone,
creating snapshot and performing I/O on mountpoints
Steps:
1. Create snapshot of a volume
2. Activate snapshot
3. Clone snapshot and Activate
4. Mount Cloned volume
5. Perform I/O on mount point
6. Calculate areequal for bricks and mountpoints
7. Add-brick more brick to cloned volume
8. Initiate Re-balance
9. validate areequal of bricks and mountpoints
"""
# Creating snapshot:
g.log.info("Starting to Create snapshot")
ret, _, _ = snap_create(self.mnode, self.volname, self.snap)
self.assertEqual(ret, 0, ("Failed to create snapshot for volume %s"
% self.volname))
g.log.info("Snapshot %s created successfully for volume %s",
self.snap, self.volname)
# Activating snapshot
g.log.info("Starting to Activate Snapshot")
ret, _, _ = snap_activate(self.mnode, self.snap)
self.assertEqual(ret, 0, ("Failed to Activate snapshot %s"
% self.snap))
g.log.info("Snapshot %s activated successfully", self.snap)
# Creating a Clone of snapshot:
g.log.info("creating Clone Snapshot")
ret, _, _ = snap_clone(self.mnode, self.snap, self.clone)
self.assertEqual(ret, 0, ("Failed to clone volume %s" % self.clone))
g.log.info("clone volume %s created successfully", self.clone)
# Starting clone volume
g.log.info("starting clone volume")
ret, _, _ = volume_start(self.mnode, self.clone)
self.assertEqual(ret, 0, "Failed to start %s" % self.clone)
g.log.info("clone volume %s started successfully", self.clone)
# Mounting a clone volume
g.log.info("Mounting created clone volume")
ret, _, _ = mount_volume(self.clone, self.mount_type, self.mount1,
self.mnode, self.clients[0])
self.assertEqual(ret, 0, "clone Volume mount failed for %s"
% self.clone)
g.log.info("cloned volume %s mounted Successfully", self.clone)
# Validate clone volume mounted or not
g.log.info("Validate clone volume mounted or not")
ret = is_mounted(self.clone, self.mount1, self.mnode,
self.clients[0], self.mount_type)
self.assertTrue(ret, "Cloned Volume not mounted on mount point: %s"
% self.mount1)
g.log.info("Cloned Volume %s mounted on %s", self.clone, self.mount1)
# write files to mountpoint
g.log.info("Starting IO on %s mountpoint...", self.mount1)
all_mounts_procs = []
cmd = ("python %s create_files "
"-f 10 --base-file-name file %s" % (self.script_upload_path,
self.mount1))
proc = g.run(self.clients[0], cmd)
all_mounts_procs.append(proc)
self.check_arequal()
# expanding volume
g.log.info("Starting to expand volume")
ret = expand_volume(self.mnode, self.volname, self.servers,
self.all_servers_info)
self.assertTrue(ret, "Failed to expand volume %s" % self.clone)
g.log.info("Expand volume successful")
ret, _, _ = rebalance_start(self.mnode, self.clone)
self.assertEqual(ret, 0, "Failed to start rebalance")
g.log.info("Successfully started rebalance on the "
"volume %s", self.clone)
# Log Rebalance status
g.log.info("Log Rebalance status")
_, _, _ = rebalance_status(self.mnode, self.clone)
# Wait for rebalance to complete
g.log.info("Waiting for rebalance to complete")
ret = wait_for_rebalance_to_complete(self.mnode, self.clone)
self.assertTrue(ret, ("Rebalance is not yet complete "
"on the volume %s", self.clone))
g.log.info("Rebalance is successfully complete on "
"the volume %s", self.clone)
# Check Rebalance status after rebalance is complete
g.log.info("Checking Rebalance status")
ret, _, _ = rebalance_status(self.mnode, self.clone)
self.assertEqual(ret, 0, ("Failed to get rebalance status for "
"the volume %s", self.clone))
g.log.info("Successfully got rebalance status of the "
"volume %s", self.clone)
self.check_arequal()
def tearDown(self):
# Cleanup clone volume
g.log.info("Starting to cleanup volume %s", self.clone)
ret = cleanup_volume(self.mnode, self.clone)
if not ret:
raise ExecutionError("Failed to Cleanup cloned volume")
g.log.info("Successful in clone volume cleanup")
g.log.info("Starting to Unmount Volume and Cleanup Volume")
ret = self.unmount_volume_and_cleanup_volume(mounts=self.mounts)
if not ret:
raise ExecutionError("Failed to umount"
"the volume & cleanup Volume")
g.log.info("Successful in umounting the volume and Cleanup")
# Calling GlusterBaseClass teardown
GlusterBaseClass.tearDown.im_func(self)
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