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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 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.glusterfile import get_md5sum
from glustolibs.gluster.volume_libs import shrink_volume
from glustolibs.io.utils import validate_io_procs, wait_for_io_to_complete
@runs_on([['distributed-replicated', 'distributed-arbiter',
'distributed-dispersed', 'distributed'], ['glusterfs']])
class TestCopyHugeFileWithRemoveBrickInProgress(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)
self.first_client = self.mounts[0].client_system
def tearDown(self):
# If cp is running then wait for it to complete
if self.cp_running:
if not wait_for_io_to_complete(self.io_proc, [self.mounts[0]]):
g.log.error("I/O failed to stop on clients")
ret, _, _ = g.run(self.first_client, "rm -rf /mnt/huge_file.txt")
if ret:
g.log.error("Failed to remove huge file from /mnt.")
# 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_copy_huge_file_with_remove_brick_in_progress(self):
"""
Test case:
1. Create a volume, start it and mount it.
2. Create files and dirs on the mount point.
3. Start remove-brick and copy huge file when remove-brick is
in progress.
4. Commit remove-brick and check checksum of orginal and copied file.
"""
# Create a directory with some files inside
cmd = ("cd %s; for i in {1..10}; do mkdir dir$i; for j in {1..5};"
" do dd if=/dev/urandom of=dir$i/file$j bs=1M count=1; done;"
" done" % self.mounts[0].mountpoint)
ret, _, _ = g.run(self.first_client, cmd)
self.assertFalse(ret,
"Failed to create dirs and files.")
# Create a hug file under /mnt dir
ret, _, _ = g.run(self.first_client,
"fallocate -l 10G /mnt/huge_file.txt")
self.assertFalse(ret, "Failed to create hug file at /mnt")
# Copy a huge file when remove-brick is in progress
self.cp_running = False
cmd = ("sleep 60; cd %s;cp ../huge_file.txt ."
% self.mounts[0].mountpoint)
self.io_proc = [g.run_async(self.first_client, cmd)]
self.rename_running = True
# Start remove-brick on volume and wait for it to complete
ret = shrink_volume(self.mnode, self.volname, rebalance_timeout=1000)
self.assertTrue(ret, "Failed to remove-brick from volume")
g.log.info("Remove-brick rebalance successful")
# Validate if copy was successful or not
ret = validate_io_procs(self.io_proc, [self.mounts[0]])
self.assertTrue(ret, "dir rename failed on mount point")
self.cp_running = False
# Check checksum of orginal and copied file
original_file_checksum = get_md5sum(self.first_client,
"/mnt/huge_file.txt")
copied_file_checksum = get_md5sum(self.first_client,
"{}/huge_file.txt"
.format(self.mounts[0].mountpoint))
self.assertEqual(original_file_checksum.split(" ")[0],
copied_file_checksum.split(" ")[0],
"md5 checksum of original and copied file are"
" different")
g.log.info("md5 checksum of original and copied file are same.")
# Remove original huge file
ret, _, _ = g.run(self.first_client, "rm -rf /mnt/huge_file.txt")
self.assertFalse(ret, "Failed to remove huge_file from mount point")
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