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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.mount_ops import mount_volume, umount_volume
from glustolibs.gluster.volume_ops import (set_volume_options,
volume_reset)
from glustolibs.gluster.glusterfile import create_link_file
@runs_on([['dispersed', 'distributed-dispersed'],
['glusterfs', 'nfs']])
class TestEcReadFromHardlink(GlusterBaseClass):
def setUp(self):
self.get_super_method(self, 'setUp')()
# Setup volume
if not self.setup_volume():
raise ExecutionError("Failed to Setup_Volume and Mount_Volume")
g.log.info("Successful in Setup Volume and Mount Volume")
def tearDown(self):
self.get_super_method(self, 'tearDown')()
# Unmount the volume
ret = umount_volume(mclient=self.mounts[0].client_system,
mpoint=self.mounts[0].mountpoint)
if not ret:
raise ExecutionError("Unable to umount the volume")
g.log.info("Unmounting of the volume %s succeeded", self.volname)
# The reason for volume reset is, metadata-cache is enabled
# by group, can't disable the group in glusterfs.
ret, _, _ = volume_reset(self.mnode, self.volname)
if ret:
raise ExecutionError("Unable to reset the volume {}".
format(self.volname))
g.log.info("Volume: %s reset successful ", self.volname)
# Cleanup the volume
if not self.cleanup_volume():
raise ExecutionError("Unable to perform volume clenaup")
g.log.info("Volume cleanup is successfull")
def test_ec_read_from_hardlink(self):
"""
Test steps:
1. Enable metadata-cache(md-cache) options on the volume
2. Touch a file and create a hardlink for it
3. Read data from the hardlink.
4. Read data from the actual file.
"""
options = {'group': 'metadata-cache'}
# Set metadata-cache options as group
ret = set_volume_options(self.mnode, self.volname, options)
self.assertTrue(ret, "Unable to set the volume options {}".
format(options))
g.log.info("Able to set the %s options", options)
# Mounting the volume on one client
ret, _, _ = mount_volume(self.volname, mtype=self.mount_type,
mpoint=self.mounts[0].mountpoint,
mserver=self.mnode,
mclient=self.mounts[0].client_system)
self.assertEqual(ret, 0, ("Volume {} is not mounted").
format(self.volname))
g.log.info("Volume mounted successfully : %s", self.volname)
file_name = self.mounts[0].mountpoint + "/test1"
content = "testfile"
hard_link = self.mounts[0].mountpoint + "/test1_hlink"
cmd = 'echo "{content}" > {file}'.format(file=file_name,
content=content)
# Creating a file with data
ret, _, _ = g.run(self.mounts[0].client_system, cmd)
self.assertEqual(ret, 0, "Sucessful in creating a file with data")
g.log.info("file created successfully on %s",
self.mounts[0].mountpoint)
# Creating a hardlink for the file created
ret = create_link_file(self.mounts[0].client_system,
file_name, hard_link)
self.assertTrue(ret, "Link file creation failed")
g.log.info("Link file creation for %s is successful", file_name)
# Reading from the file as well as the hardlink
for each in (file_name, hard_link):
ret, out, _ = g.run(self.mounts[0].client_system,
"cat {}".format(each))
self.assertEqual(ret, 0, "Unable to read the {}".format(each))
self.assertEqual(content, out.strip('\n'), "The content {} and"
" data in file {} is not same".
format(content, each))
g.log.info("Read of %s file is successful", each)
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