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# Copyright (C) 2018-2020 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.
from glusto.core import Glusto as g
from glustolibs.gluster.brick_ops import remove_brick
from glustolibs.gluster.constants import \
TEST_LAYOUT_IS_COMPLETE as LAYOUT_IS_COMPLETE
from glustolibs.gluster.constants import FILETYPE_DIRS
from glustolibs.gluster.dht_test_utils import validate_files_in_dir
from glustolibs.gluster.exceptions import ExecutionError
from glustolibs.gluster.gluster_base_class import GlusterBaseClass, runs_on
from glustolibs.gluster.volume_libs import (
log_volume_info_and_status, form_bricks_list_to_remove_brick)
from glustolibs.gluster.dht_test_utils import is_layout_complete
from glustolibs.gluster.mount_ops import mount_volume
@runs_on([['distributed', 'distributed-replicated', 'distributed-arbiter',
'distributed-dispersed'],
['glusterfs']])
class RebalanceValidation(GlusterBaseClass):
@classmethod
def setUpClass(cls):
# Calling GlusterBaseClass setUpClass
cls.get_super_method(cls, 'setUpClass')()
# Check for the default dist_count value and override it if required
if cls.default_volume_type_config['distributed']['dist_count'] <= 2:
cls.default_volume_type_config['distributed']['dist_count'] = 4
if (cls.default_volume_type_config['distributed-replicated']
['dist_count']) <= 2:
(cls.default_volume_type_config['distributed-replicated']
['dist_count']) = 4
if (cls.default_volume_type_config['distributed-dispersed']
['dist_count']) <= 2:
(cls.default_volume_type_config['distributed-dispersed']
['dist_count']) = 4
if (cls.default_volume_type_config['distributed-arbiter']
['dist_count']) <= 2:
(cls.default_volume_type_config['distributed-arbiter']
['dist_count']) = 4
# Setup Volume and Mount Volume
g.log.info("Starting to Setup Volume and Mount Volume")
ret = cls.setup_volume_and_mount_volume(mounts=cls.mounts)
if not ret:
raise ExecutionError("Failed to Setup_Volume and Mount_Volume")
g.log.info("Successful in Setup Volume and Mount Volume")
def test_induce_holes_then_lookup(self):
"""
Test Script to induce holes in layout by using remove-brick force
and then performing lookup in order to fix the layout.
Steps :
1) Create a volume and mount it using FUSE.
2) Create a directory "testdir" on mount point.
3) Check if the layout is complete.
4) Log volume info and status before remove-brick operation.
5) Form a list of bricks to be removed.
6) Start remove-brick operation using 'force'.
7) Let remove-brick complete and check layout.
8) Mount the volume on a new mount.
9) Send a lookup on mount point.
10) Check if the layout is complete.
"""
# pylint: disable=too-many-statements
# Create a directory on mount point
m_point = self.mounts[0].mountpoint
dirpath = '/testdir'
command = 'mkdir -p ' + m_point + dirpath
ret, _, _ = g.run(self.clients[0], command)
self.assertEqual(ret, 0, "mkdir failed")
g.log.info("mkdir is successful")
# DHT Layout validation
g.log.debug("Verifying hash layout values %s:%s",
self.clients[0], m_point)
ret = validate_files_in_dir(self.clients[0], m_point,
test_type=LAYOUT_IS_COMPLETE,
file_type=FILETYPE_DIRS)
self.assertTrue(ret, "LAYOUT_IS_COMPLETE: FAILED")
g.log.info("LAYOUT_IS_COMPLETE: PASS")
# Log Volume Info and Status before shrinking the volume.
g.log.info("Logging volume info and Status before shrinking volume")
log_volume_info_and_status(self.mnode, self.volname)
# Form bricks list for Shrinking volume
self.remove_brick_list = form_bricks_list_to_remove_brick(self.mnode,
self.volname,
subvol_num=1)
self.assertNotEqual(self.remove_brick_list, None,
("Volume %s: Failed to form bricks list for volume"
" shrink", self.volname))
g.log.info("Volume %s: Formed bricks list for volume shrink",
self.volname)
# Shrinking volume by removing bricks
g.log.info("Start removing bricks from volume")
ret, _, _ = remove_brick(self.mnode, self.volname,
self.remove_brick_list, "force")
self.assertFalse(ret, "Remove-brick with force: FAIL")
g.log.info("Remove-brick with force: PASS")
# Check the layout
ret = is_layout_complete(self.mnode, self.volname, dirpath)
self.assertFalse(ret, ("Volume %s: Layout is complete", self.volname))
g.log.info("Volume %s: Layout has some holes", self.volname)
# Mount the volume on a new mount point
ret, _, _ = mount_volume(self.volname, mtype='glusterfs',
mpoint=m_point,
mserver=self.mnode,
mclient=self.clients[1])
self.assertEqual(ret, 0, ("Failed to do gluster mount of volume %s"
" on client node %s",
self.volname, self.clients[1]))
g.log.info("Volume %s mounted successfullly on %s", self.volname,
self.clients[1])
# Send a look up on the directory
cmd = 'ls %s%s' % (m_point, dirpath)
ret, _, err = g.run(self.clients[1], cmd)
self.assertEqual(ret, 0, ("Lookup failed on %s with error %s",
(dirpath, err)))
g.log.info("Lookup sent successfully on %s", m_point + dirpath)
# DHT Layout validation
g.log.info("Checking layout after new mount")
g.log.debug("Verifying hash layout values %s:%s",
self.clients[1], m_point + dirpath)
ret = validate_files_in_dir(self.clients[1], m_point + dirpath,
test_type=LAYOUT_IS_COMPLETE,
file_type=FILETYPE_DIRS)
self.assertTrue(ret, "LAYOUT_IS_COMPLETE: FAILED")
g.log.info("LAYOUT_IS_COMPLETE: PASS")
def tearDown(self):
# Cleaning the removed bricks
for brick in self.remove_brick_list:
brick_node, brick_path = brick.split(":")
cmd = "rm -rf " + brick_path
ret, _, _ = g.run(brick_node, cmd)
if ret:
raise ExecutionError("Failed to delete removed brick dir "
"%s:%s" % (brick_node, brick_path))
# Unmount Volume and Cleanup Volume
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 Unmount Volume and Cleanup Volume")
g.log.info("Successful in Unmount Volume and Cleanup Volume")
# Calling GlusterBaseClass tearDown
self.get_super_method(self, 'tearDown')()
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