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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 random import sample
import time
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.volume_ops import volume_start
from glustolibs.gluster.volume_libs import get_subvols
from glustolibs.gluster.lib_utils import is_core_file_created
from glustolibs.gluster.brick_libs import (bring_bricks_offline,
are_bricks_offline,
are_bricks_online)
from glustolibs.gluster.heal_libs import monitor_heal_completion
from glustolibs.misc.misc_libs import reboot_nodes_and_wait_to_come_online
@runs_on([['dispersed', 'distributed-dispersed'],
['glusterfs', 'nfs']])
class TestEcTruncateFileWithBrickDown(GlusterBaseClass):
def setUp(self):
# calling GlusterBaseClass setUp
self.get_super_method(self, 'setUp')()
# Setup volume and mount it on three clients.
if not self.setup_volume_and_mount_volume([self.mounts[0]]):
raise ExecutionError("Failed to Setup_Volume and Mount_Volume")
def tearDown(self):
# Calling GlusterBaseClass tearDown
self.get_super_method(self, 'tearDown')()
# Unmount and cleanup the volume
if not self.unmount_volume_and_cleanup_volume([self.mounts[0]]):
raise ExecutionError("Unable to unmount and cleanup volume")
def test_ec_truncate_file_with_brick_down(self):
"""
Test steps:
1. Create a volume, start and mount it on a client
2. Bring down redundant bricks in the subvol
3. Create a file on the volume using "touch"
4. Truncate the file using "O_TRUNC"
5. Bring the brick online
6. Write data on the file and wait for heal completion
7. Check for crashes and coredumps
"""
# pylint: disable=unsubscriptable-object
for restart_type in ("volume_start", "node_reboot"):
# Time stamp from mnode for checking cores at the end of test
ret, test_timestamp, _ = g.run(self.mnode, "date +%s")
self.assertEqual(ret, 0, "date command failed")
test_timestamp = test_timestamp.strip()
# Create a file using touch
file_name = self.mounts[0].mountpoint + "/test_1"
ret, _, err = g.run(self.mounts[0].client_system, "touch {}".
format(file_name))
self.assertEqual(ret, 0, "File creation failed")
g.log.info("File Created successfully")
# List two bricks in each subvol
subvols = get_subvols(self.mnode, self.volname)['volume_subvols']
bricks_to_bring_offline = []
for subvol in subvols:
self.assertTrue(subvol, "List is empty")
bricks_to_bring_offline.extend(sample(subvol, 2))
# Bring two bricks of each subvol offline
ret = bring_bricks_offline(self.volname, bricks_to_bring_offline)
self.assertTrue(ret, "Bricks are still online")
# Validating the bricks are offline or not
ret = are_bricks_offline(self.mnode, self.volname,
bricks_to_bring_offline)
self.assertTrue(ret, "Few of the bricks are still online in"
" {} in".format(bricks_to_bring_offline))
# Truncate the file
cmd = (
'python -c "import os, sys; fd = os.open(\'{}\', os.O_TRUNC )'
'; os.close( fd )"').format(file_name)
ret, _, err = g.run(self.mounts[0].client_system, cmd)
self.assertEqual(ret, 0, err)
g.log.info("File truncated successfully")
# Bring back the bricks online
if restart_type == "volume_start":
# Bring back bricks online by volume start
ret, _, err = volume_start(self.mnode, self.volname,
force=True)
self.assertEqual(ret, 0, err)
g.log.info("All bricks are online")
elif restart_type == "node_reboot":
# Bring back the bricks online by node restart
for brick in bricks_to_bring_offline:
node_to_reboot = brick.split(":")[0]
ret = reboot_nodes_and_wait_to_come_online(node_to_reboot)
self.assertTrue(ret, "Reboot Failed on node: "
"{}".format(node_to_reboot))
g.log.info("Node: %s rebooted successfully",
node_to_reboot)
time.sleep(60)
# Check whether bricks are online or not
ret = are_bricks_online(self.mnode, self.volname,
bricks_to_bring_offline)
self.assertTrue(ret, "Bricks {} are still offline".
format(bricks_to_bring_offline))
# write data to the file
cmd = ('python -c "import os, sys;fd = os.open(\'{}\', '
'os.O_RDWR) ;'
'os.write(fd, \'This is test after truncate\'.encode());'
' os.close(fd)"').format(file_name)
ret, _, err = g.run(self.mounts[0].client_system, cmd)
self.assertEqual(ret, 0, err)
g.log.info("Data written successfully on to the file")
# Monitor heal completion
ret = monitor_heal_completion(self.mnode, self.volname)
self.assertTrue(ret, "Heal pending for file {}".format(file_name))
# check for any crashes on servers and client
for nodes in (self.servers, [self.clients[0]]):
ret = is_core_file_created(nodes, test_timestamp)
self.assertTrue(ret,
"Cores found on the {} nodes".format(nodes))
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