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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 glustolibs.gluster.exceptions import ExecutionError
from glustolibs.gluster.gluster_base_class import GlusterBaseClass, runs_on
from glustolibs.gluster.glusterdir import mkdir
from glustolibs.gluster.rebalance_ops import (
rebalance_start,
rebalance_stop,
wait_for_rebalance_to_complete
)
from glustolibs.gluster.volume_libs import expand_volume
from glustolibs.gluster.volume_ops import set_volume_options
from glustolibs.io.utils import run_linux_untar
@runs_on([['distributed-replicated'], ['glusterfs']])
class TestReserveLimitChangeWhileRebalance(GlusterBaseClass):
def _set_vol_option(self, option):
"""Method for setting volume option"""
ret = set_volume_options(
self.mnode, self.volname, option)
self.assertTrue(ret)
@classmethod
def setUpClass(cls):
# Calling GlusterBaseClass setUpClass
cls.get_super_method(cls, 'setUpClass')()
# Set I/O flag to false
cls.is_io_running = False
# 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")
def tearDown(self):
if not wait_for_rebalance_to_complete(
self.mnode, self.volname, timeout=300):
raise ExecutionError(
"Failed to complete rebalance on volume '{}'".format(
self.volname))
# 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 test_reserve_limt_change_while_rebalance(self):
"""
1) Create a distributed-replicated volume and start it.
2) Enable storage.reserve option on the volume using below command,
gluster volume set storage.reserve 50
3) Mount the volume on a client
4) Add some data on the mount point (should be within reserve limits)
5) Now, add-brick and trigger rebalance.
While rebalance is in-progress change the reserve limit to a lower
value say (30)
6. Stop the rebalance
7. Reset the storage reserve value to 50 as in step 2
8. trigger rebalance
9. while rebalance in-progress change the reserve limit to a higher
value say (70)
"""
# Setting storage.reserve 50
self._set_vol_option({"storage.reserve": "50"})
self.list_of_io_processes = []
# Create a dir to start untar
self.linux_untar_dir = "{}/{}".format(self.mounts[0].mountpoint,
"linuxuntar")
ret = mkdir(self.clients[0], self.linux_untar_dir)
self.assertTrue(ret, "Failed to create dir linuxuntar for untar")
# Start linux untar on dir linuxuntar
ret = run_linux_untar(self.clients[0], self.mounts[0].mountpoint,
dirs=tuple(['linuxuntar']))
self.list_of_io_processes += ret
self.is_io_running = True
# Add bricks to the volume
ret = expand_volume(self.mnode, self.volname, self.servers,
self.all_servers_info)
self.assertTrue(ret, "Failed to add brick with rsync on volume %s"
% self.volname)
# Trigger rebalance on the volume
ret, _, _ = rebalance_start(self.mnode, self.volname)
self.assertEqual(ret, 0, "Failed to start rebalance on the volume %s"
% self.volname)
# Setting storage.reserve 30
self._set_vol_option({"storage.reserve": "30"})
# Stopping Rebalance
ret, _, _ = rebalance_stop(self.mnode, self.volname)
self.assertEqual(ret, 0, "Failed to stop rebalance on the volume %s"
% self.volname)
# Setting storage.reserve 500
self._set_vol_option({"storage.reserve": "500"})
# Trigger rebalance on the volume
ret, _, _ = rebalance_start(self.mnode, self.volname)
self.assertEqual(ret, 0, "Failed to start rebalance on the volume %s"
% self.volname)
# Setting storage.reserve 70
self._set_vol_option({"storage.reserve": "70"})
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