From 8989f2758a5d40fb4fe286472b4b1a9faa9b4765 Mon Sep 17 00:00:00 2001 From: kshithijiyer Date: Tue, 27 Oct 2020 22:26:49 +0530 Subject: [Test] Add test with filled bricks + add brick + rebalance Test case: 1. Create a volume, start it and mount it. 2. Create a data set on the client node such that all the available space is used and "No space left on device" error is generated. 3. Set cluster.min-free-disk to 30%. 4. Add bricks to the volume, trigger rebalance and wait for rebalance to complete. Change-Id: I69c9d447b4713b107f15b4801f4371c33f5fb2fc Signed-off-by: kshithijiyer --- .../dht/test_brick_full_add_brick_rebalance.py | 120 +++++++++++++++++++++ 1 file changed, 120 insertions(+) create mode 100644 tests/functional/dht/test_brick_full_add_brick_rebalance.py (limited to 'tests/functional') diff --git a/tests/functional/dht/test_brick_full_add_brick_rebalance.py b/tests/functional/dht/test_brick_full_add_brick_rebalance.py new file mode 100644 index 000000000..e67115220 --- /dev/null +++ b/tests/functional/dht/test_brick_full_add_brick_rebalance.py @@ -0,0 +1,120 @@ +# Copyright (C) 2020 Red Hat, Inc. +# +# 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. + +import string +from random import choice + +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.dht_test_utils import find_hashed_subvol +from glustolibs.gluster.lib_utils import get_usable_size_per_disk +from glustolibs.gluster.rebalance_ops import (rebalance_start, + wait_for_rebalance_to_complete) +from glustolibs.gluster.volume_libs import get_subvols, expand_volume +from glustolibs.gluster.volume_ops import set_volume_options + + +@runs_on([['distributed-replicated', 'distributed-arbiter'], ['glusterfs']]) +class TestBrickFullAddBrickRebalance(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')() + + @staticmethod + def _get_random_string(): + letters = string.ascii_lowercase + return ''.join(choice(letters) for _ in range(5)) + + def test_brick_full_add_brick_rebalance(self): + """ + Test case: + 1. Create a volume, start it and mount it. + 2. Create a data set on the client node such that all the available + space is used and "No space left on device" error is generated. + 3. Set cluster.min-free-disk to 30%. + 4. Add bricks to the volume, trigger rebalance and wait for rebalance + to complete. + """ + # Create a data set on the client node such that all the available + # space is used and "No space left on device" error is generated + bricks = get_all_bricks(self.mnode, self.volname) + + # Calculate the usable size and fill till it reaches + # min free limit + usable_size = get_usable_size_per_disk(bricks[0]) + subvols = get_subvols(self.mnode, self.volname)['volume_subvols'] + filename = "abc" + for subvol in subvols: + while (subvols[find_hashed_subvol(subvols, "/", filename)[1]] == + subvol): + filename = self._get_random_string() + ret, _, _ = g.run(self.mounts[0].client_system, + "fallocate -l {}G {}/{}".format( + usable_size, self.mounts[0].mountpoint, + filename)) + self.assertFalse(ret, "Failed to fill disk to min free limit") + g.log.info("Disk filled up to min free limit") + + # Try to perfrom I/O from mount point(This should fail) + ret, _, _ = g.run(self.mounts[0].client_system, + "fallocate -l 5G {}/mfile".format( + self.mounts[0].mountpoint)) + self.assertTrue(ret, + "Unexpected: Able to do I/O even when disks are " + "filled to min free limit") + g.log.info("Expected: Unable to perfrom I/O as min free disk is hit") + + # Set cluster.min-free-disk to 30% + ret = set_volume_options(self.mnode, self.volname, + {'cluster.min-free-disk': '30%'}) + self.assertTrue(ret, "Failed to set cluster.min-free-disk to 30%") + + # Add brick to volume + ret = expand_volume(self.mnode, self.volname, self.servers, + self.all_servers_info) + self.assertTrue(ret, "Failed to add brick on volume %s" + % self.volname) + + # Trigger rebalance and wait for it to complete + ret, _, _ = rebalance_start(self.mnode, self.volname, + force=True) + self.assertEqual(ret, 0, "Failed to start rebalance on the volume %s" + % self.volname) + + # Wait for rebalance to complete + ret = wait_for_rebalance_to_complete(self.mnode, self.volname, + timeout=1200) + self.assertTrue(ret, "Rebalance is not yet complete on the volume " + "%s" % self.volname) + g.log.info("Rebalance successfully completed") -- cgit