From 4280b12b69844d57c70c6a05916d79d778971463 Mon Sep 17 00:00:00 2001 From: kshithijiyer Date: Wed, 28 Oct 2020 16:37:40 +0530 Subject: [Test] Add test for full brick + add brick + remove brick Test case: 1. Create a volume, start it and mount it. 2. Fill few bricks till min.free.limit is reached. 3. Add brick to the volume. 4. Set cluster.min-free-disk to 30%. 5. Remove bricks from the volume. (Remove brick should pass without any errors) 6. Check for data loss by comparing arequal before and after. Change-Id: I0033ec47ab2a2958178ce23c9d164939c9bce2f3 Signed-off-by: kshithijiyer --- .../dht/test_brick_full_add_brick_remove_brick.py | 111 +++++++++++++++++++++ 1 file changed, 111 insertions(+) create mode 100644 tests/functional/dht/test_brick_full_add_brick_remove_brick.py (limited to 'tests') diff --git a/tests/functional/dht/test_brick_full_add_brick_remove_brick.py b/tests/functional/dht/test_brick_full_add_brick_remove_brick.py new file mode 100644 index 000000000..eaf7dafb4 --- /dev/null +++ b/tests/functional/dht/test_brick_full_add_brick_remove_brick.py @@ -0,0 +1,111 @@ +# 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.volume_libs import (get_subvols, expand_volume, + shrink_volume) +from glustolibs.gluster.volume_ops import set_volume_options +from glustolibs.io.utils import collect_mounts_arequal + + +@runs_on([['distributed-replicated', 'distributed-arbiter'], ['glusterfs']]) +class TestBrickFullAddBrickRemoveBrickRebalance(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_remove_brick(self): + """ + Test case: + 1. Create a volume, start it and mount it. + 2. Fill few bricks till min-free-limit is reached. + 3. Add brick to the volume.(This should pass.) + 4. Set cluster.min-free-disk to 30%. + 5. Remove bricks from the volume.(This should pass.) + 6. Check for data loss by comparing arequal before and after. + """ + # Fill few bricks till it is full + 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 _ in range(0, usable_size): + while (subvols[find_hashed_subvol(subvols, "/", filename)[1]] + == subvols[0]): + filename = self._get_random_string() + ret, _, _ = g.run(self.mounts[0].client_system, + "fallocate -l 1G {}/{}".format( + self.mounts[0].mountpoint, filename)) + self.assertFalse(ret, "Failed to fill disk to min free limit") + filename = self._get_random_string() + g.log.info("Disk filled up to min free limit") + + # Collect arequal checksum before ops + arequal_checksum_before = collect_mounts_arequal(self.mounts[0]) + + # 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) + + # 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%") + + # Remove bricks from the volume + ret = shrink_volume(self.mnode, self.volname, rebalance_timeout=1800) + 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") -- cgit