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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 02110-1301 USA.
from glusto.core import Glusto as g
from glustolibs.gluster.gluster_base_class import GlusterBaseClass, runs_on
from glustolibs.gluster.exceptions import ExecutionError
from glustolibs.gluster.brick_libs import get_all_bricks
from glustolibs.gluster.brick_ops import remove_brick
from glustolibs.gluster.volume_libs import shrink_volume
from glustolibs.gluster.volume_libs import form_bricks_list_to_remove_brick
from glustolibs.io.utils import collect_mounts_arequal
@runs_on([['distributed-replicated', 'distributed-dispersed',
'distributed-arbiter', 'distributed'], ['glusterfs']])
class TestRemoveBrickCommandOptions(GlusterBaseClass):
def setUp(self):
self.get_super_method(self, 'setUp')()
# Creating Volume and mounting the volume
ret = self.setup_volume_and_mount_volume([self.mounts[0]])
if not ret:
raise ExecutionError("Volume creation or mount failed: %s"
% self.volname)
def tearDown(self):
# Unmounting and cleaning volume
ret = self.unmount_volume_and_cleanup_volume([self.mounts[0]])
if not ret:
raise ExecutionError("Unable to delete volume %s" % self.volname)
self.get_super_method(self, 'tearDown')()
def _run_io_on_mount_point(self, fname="file"):
"""Create a few files on mount point"""
cmd = ("cd {};for i in `seq 1 5`; do mkdir dir$i;"
"for j in `seq 1 10`;do touch {}$j;done;done"
.format(self.mounts[0].mountpoint, fname))
ret, _, _ = g.run(self.mounts[0].client_system, cmd)
self.assertFalse(ret, "Failed to do I/O on mount point")
def test_remove_brick_command_basic(self):
"""
Test case:
1. Create a volume, start it and mount it.
2. Create some data on the volume.
3. Run remove-brick start, status and finally commit.
4. Check if there is any data loss or not.
"""
# Create some data on the volume
self._run_io_on_mount_point()
# Collect arequal checksum before ops
arequal_checksum_before = collect_mounts_arequal(self.mounts[0])
# Run remove-brick start, status and finally commit
ret = shrink_volume(self.mnode, self.volname)
self.assertTrue(ret, "Failed to remove-brick from volume")
g.log.info("Remove-brick rebalance successful")
# Check for data loss by comparing arequal before and after ops
arequal_checksum_after = collect_mounts_arequal(self.mounts[0])
self.assertEqual(arequal_checksum_before, arequal_checksum_after,
"arequal checksum is NOT MATCHNG")
g.log.info("arequal checksum is SAME")
def test_remove_brick_command_force(self):
"""
Test case:
1. Create a volume, start it and mount it.
2. Create some data on the volume.
3. Run remove-brick with force.
4. Check if bricks are still seen on volume or not
"""
# Create some data on the volume
self._run_io_on_mount_point()
# Remove-brick on the volume with force option
brick_list_to_remove = form_bricks_list_to_remove_brick(self.mnode,
self.volname)
self.assertIsNotNone(brick_list_to_remove, "Brick list is empty")
ret, _, _ = remove_brick(self.mnode, self.volname,
brick_list_to_remove, option="force")
self.assertFalse(ret, "Failed to run remove-brick with force")
g.log.info("Successfully run remove-brick with force")
# Get a list of all bricks
brick_list = get_all_bricks(self.mnode, self.volname)
self.assertIsNotNone(brick_list, "Brick list is empty")
# Check if bricks removed brick are present or not in brick list
for brick in brick_list_to_remove:
self.assertNotIn(brick, brick_list,
"Brick still present in brick list even "
"after removing")
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