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| -rw-r--r-- | tests/functional/dht/test_rebalance_multiple_shrinks.py | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/tests/functional/dht/test_rebalance_multiple_shrinks.py b/tests/functional/dht/test_rebalance_multiple_shrinks.py new file mode 100644 index 000000000..a95cdf141 --- /dev/null +++ b/tests/functional/dht/test_rebalance_multiple_shrinks.py @@ -0,0 +1,87 @@ +# Copyright (C) 2021 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 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_libs import shrink_volume +from glustolibs.io.utils import collect_mounts_arequal + + +@runs_on([['distributed'], ['glusterfs']]) +class TestRebalanceMultipleShrinks(GlusterBaseClass): + + def setUp(self): + + self.get_super_method(self, 'setUp')() + + # Changing dist_count to 6 + self.volume['voltype']['dist_count'] = 6 + + # Setup Volume + if not self.setup_volume_and_mount_volume([self.mounts[0]]): + raise ExecutionError("Failed to Setup and mount volume") + + self.first_client = self.mounts[0].client_system + + def tearDown(self): + + # Unmount and clean volume + if not self.unmount_volume_and_cleanup_volume([self.mounts[0]]): + raise ExecutionError("Failed to Cleanup Volume") + + # Calling GlusterBaseClass tearDown + self.get_super_method(self, 'tearDown')() + + def test_rebalance_multiple_shrinks(self): + """ + Test case: + 1. Modify the distribution count of a volume + 2. Create a volume, start it and mount it + 3. Create some file on mountpoint + 4. Collect arequal checksum on mount point pre-rebalance + 5. Do the following 3 times: + 6. Shrink the volume + 7. Collect arequal checksum on mount point post-rebalance + and compare with value from step 4 + """ + + # Create some file on mountpoint + cmd = ("cd %s; for i in {1..500} ; do " + "dd if=/dev/urandom of=file$i bs=10M count=1; done" + % self.mounts[0].mountpoint) + ret, _, _ = g.run(self.first_client, cmd) + self.assertEqual(ret, 0, "IO failed on volume %s" + % self.volname) + + # Collect arequal checksum before rebalance + arequal_checksum_before = collect_mounts_arequal(self.mounts[0]) + + for _ in range(3): + # Shrink volume + ret = shrink_volume(self.mnode, self.volname, + rebalance_timeout=16000) + self.assertTrue(ret, "Failed to remove-brick from volume") + g.log.info("Remove-brick rebalance successful") + + # Collect arequal checksum after rebalance + arequal_checksum_after = collect_mounts_arequal(self.mounts[0]) + + # Check for data loss by comparing arequal before and after + # rebalance + self.assertEqual(arequal_checksum_before, arequal_checksum_after, + "arequal checksum is NOT MATCHNG") + g.log.info("arequal checksum is SAME") |