diff options
Diffstat (limited to 'tests/functional/dht/test_one_brick_full_add_brick_rebalance.py')
| -rw-r--r-- | tests/functional/dht/test_one_brick_full_add_brick_rebalance.py | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/tests/functional/dht/test_one_brick_full_add_brick_rebalance.py b/tests/functional/dht/test_one_brick_full_add_brick_rebalance.py new file mode 100644 index 000000000..1ef5d1e90 --- /dev/null +++ b/tests/functional/dht/test_one_brick_full_add_brick_rebalance.py @@ -0,0 +1,139 @@ +# 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. + +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.glusterdir import get_dir_contents, mkdir +from glustolibs.gluster.glusterfile import get_dht_linkto_xattr +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.io.utils import collect_mounts_arequal + + +@runs_on([['distributed'], ['glusterfs']]) +class TestOneBrickFullAddBrickRebalance(GlusterBaseClass): + + def setUp(self): + + self.get_super_method(self, 'setUp')() + + # Changing dist_count to 3 + self.volume['voltype']['dist_count'] = 3 + + # 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(10)) + + def test_one_brick_full_add_brick_rebalance(self): + """ + Test case: + 1. Create a pure distribute volume with 3 bricks. + 2. Start it and mount it on client. + 3. Fill one disk of the volume till it's full + 4. Add brick to volume, start rebalance and wait for it to complete. + 5. Check arequal checksum before and after add brick should be same. + 6. Check if link files are present on bricks or not. + """ + # 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'] + fname = "abc" + + # Create directories in hierarchy + dirp = "/dir1/dir2/" + path = "{}{}".format(self.mounts[0].mountpoint, dirp) + ret = mkdir(self.mounts[0].client_system, path, parents=True) + self.assertTrue(ret, "Failed to create dir hierarchy") + + for _ in range(0, usable_size): + + # Create files inside directories + while (subvols[find_hashed_subvol(subvols, dirp, fname)[1]][0] != + subvols[0][0]): + fname = self._get_random_string() + ret, _, _ = g.run(self.mounts[0].client_system, + "fallocate -l 1G {}{}".format(path, fname)) + self.assertFalse(ret, "Failed to fill disk to min free limit") + fname = 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) + + # 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=1800) + self.assertTrue(ret, "Rebalance is not yet complete on the volume " + "%s" % self.volname) + g.log.info("Rebalance successfully completed") + + # 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") + + # Check if linkto files exist or not as rebalance is already + # completed we shouldn't be seeing any linkto files + for brick in bricks: + node, path = brick.split(":") + path += dirp + list_of_files = get_dir_contents(node, path) + self.assertIsNotNone(list_of_files, "Unable to get files") + for filename in list_of_files: + ret = get_dht_linkto_xattr(node, "{}{}".format(path, + filename)) + self.assertIsNone(ret, "Unable to fetch dht linkto xattr") |