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Diffstat (limited to 'tests/distaf/distaf_libs/distaflibs-gluster/distaflibs/gluster/tiering_ops.py')
| -rw-r--r-- | tests/distaf/distaf_libs/distaflibs-gluster/distaflibs/gluster/tiering_ops.py | 1057 |
1 files changed, 0 insertions, 1057 deletions
diff --git a/tests/distaf/distaf_libs/distaflibs-gluster/distaflibs/gluster/tiering_ops.py b/tests/distaf/distaf_libs/distaflibs-gluster/distaflibs/gluster/tiering_ops.py deleted file mode 100644 index 4074fb7c634..00000000000 --- a/tests/distaf/distaf_libs/distaflibs-gluster/distaflibs/gluster/tiering_ops.py +++ /dev/null @@ -1,1057 +0,0 @@ -#!/usr/bin/env python -# This file is part of DiSTAF -# Copyright (C) 2015-2016 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. - -""" - Description: Library for gluster tiering operations. -""" - -import re -from distaf.util import tc -import distaflibs.gluster.volume_ops -from distaflibs.gluster.peer_ops import peer_probe_servers -from distaflibs.gluster.gluster_init import start_glusterd -from distaflibs.gluster.lib_utils import list_files - -try: - import xml.etree.cElementTree as etree -except ImportError: - import xml.etree.ElementTree as etree - - -def add_peer_nodes_to_cluster(peers, mnode=None): - """Adds the given peer nodes to cluster - - Args: - peers (list) : list of peer nodes to be attached to cluster - - Kwargs: - mnode (str): Node on which cmd has to be executed. - If None, defaults to servers[0]. - - Returns: - bool: True, if peer nodes are attached to cluster - False, otherwise - - Example: - add_peer_nodes_to_cluster(['peer_node1','peer_node2']) - """ - - if mnode is None: - mnode = tc.servers[0] - - if not isinstance(peers, list): - peers = [peers] - - ret = start_glusterd(servers=peers) - if not ret: - tc.logger.error("glusterd did not start in peer nodes") - return False - - ret = peer_probe_servers(servers=peers, mnode=mnode) - if not ret: - tc.logger.error("Unable to do peer probe on peer machines") - return False - - return True - - -def tier_attach(volname, num_bricks_to_add, peers, replica=1, force=False, - mnode=None): - """Attaches tier to the volume - - Args: - volname (str): volume name - num_bricks_to_add (str): number of bricks to be added as hot tier - peers (list): from these servers, hot tier will be added to volume - - Kwargs: - replica (str): replica count of the hot tier - force (bool): If this option is set to True, then attach tier - will get executed with force option. If it is set to False, - then attach tier will get executed without force option - mnode (str): Node on which cmd has to be executed. - If None, defaults to servers[0]. - - Returns: - tuple: Tuple containing three elements (ret, out, err). - The first element 'ret' is of type 'int' and is the return value - of command execution. - - The second element 'out' is of type 'str' and is the stdout value - of the command execution. - - The third element 'err' is of type 'str' and is the stderr value - of the command execution. - - Example: - tier_attach(testvol, '2', ['peer_node1','peer_node2']) - """ - - if mnode is None: - mnode = tc.servers[0] - - replica = int(replica) - repc = '' - if replica != 1: - repc = "replica %d" % replica - - frce = '' - if force: - frce = 'force' - - num_bricks_to_add = int(num_bricks_to_add) - - from distaflibs.gluster.lib_utils import form_bricks_path - bricks_path = form_bricks_path(num_bricks_to_add, peers[:], - mnode, volname) - if bricks_path is None: - tc.logger.error("number of bricks required are greater than " - "unused bricks") - return (-1, '', '') - - bricks_path = [re.sub(r"(.*\/\S+\_)brick(\d+)", r"\1tier\2", item) - for item in bricks_path.split() if item] - tier_bricks_path = " ".join(bricks_path) - cmd = ("gluster volume tier %s attach %s %s %s --mode=script" - % (volname, repc, tier_bricks_path, frce)) - - return tc.run(mnode, cmd) - - -def tier_start(volname, force=False, mnode=None): - """Starts the tier volume - - Args: - volname (str): volume name - - Kwargs: - force (bool): If this option is set to True, then attach tier - will get executed with force option. If it is set to False, - then attach tier will get executed without force option - mnode (str): Node on which cmd has to be executed. - If None, defaults to servers[0]. - Returns: - tuple: Tuple containing three elements (ret, out, err). - The first element 'ret' is of type 'int' and is the return value - of command execution. - - The second element 'out' is of type 'str' and is the stdout value - of the command execution. - - The third element 'err' is of type 'str' and is the stderr value - of the command execution. - - Example: - tier_start(testvol) - """ - - if mnode is None: - mnode = tc.servers[0] - - frce = '' - if force: - frce = 'force' - - cmd = ("gluster volume tier %s start %s --mode=script" - % (volname, frce)) - return tc.run(mnode, cmd) - - -def tier_status(volname, mnode=None): - """executes tier status command - - Args: - volname (str): volume name - - Kwargs: - mnode (str): Node on which cmd has to be executed. - If None, defaults to servers[0]. - Returns: - tuple: Tuple containing three elements (ret, out, err). - The first element 'ret' is of type 'int' and is the return value - of command execution. - - The second element 'out' is of type 'str' and is the stdout value - of the command execution. - - The third element 'err' is of type 'str' and is the stderr value - of the command execution. - - Example: - tier_status(testvol) - """ - - if mnode is None: - mnode = tc.servers[0] - - cmd = "gluster volume tier %s status" % volname - ret = tc.run(mnode, cmd) - - return ret - - -def get_tier_status(volname, mnode=None): - """Parse the output of 'gluster tier status' command. - - Args: - volname (str): volume name - - Kwargs: - mnode (str): Node on which command has to be executed. - If None, defaults to servers[0]. - - Returns: - NoneType: None if command execution fails, parse errors. - dict: dict on success. - - Examples: - >>> get_tier_status(mnode = 'abc.lab.eng.xyz.com') - {'node': [{'promotedFiles': '0', 'demotedFiles': '0', 'nodeName': - 'localhost', 'statusStr': 'in progress'}, {'promotedFiles': '0', - 'demotedFiles': '0', 'nodeName': '10.70.47.16', 'statusStr': - 'in progress'}], 'task-id': '2ed28cbd-4246-493a-87b8-1fdcce313b34', - 'nodeCount': '4', 'op': '7'} - """ - - if mnode is None: - mnode = tc.servers[0] - - cmd = "gluster volume tier %s status --xml" % volname - ret, out, _ = tc.run(mnode, cmd, verbose=False) - if ret != 0: - tc.logger.error("Failed to execute 'tier status' on node %s. " - "Hence failed to get tier status.", mnode) - return None - - try: - root = etree.XML(out) - except etree.ParseError: - tc.logger.error("Failed to parse the gluster tier status xml output.") - return None - - tier_status = {} - tier_status["node"] = [] - for info in root.findall("volRebalance"): - for element in info.getchildren(): - if element.tag == "node": - status_info = {} - for elmt in element.getchildren(): - status_info[elmt.tag] = elmt.text - tier_status[element.tag].append(status_info) - else: - tier_status[element.tag] = element.text - return tier_status - - -def tier_detach_start(volname, mnode=None): - """starts detaching tier on given volume - - Args: - volname (str): volume name - - Kwargs: - mnode (str): Node on which cmd has to be executed. - If None, defaults to servers[0]. - - Returns: - tuple: Tuple containing three elements (ret, out, err). - The first element 'ret' is of type 'int' and is the return value - of command execution. - - The second element 'out' is of type 'str' and is the stdout value - of the command execution. - - The third element 'err' is of type 'str' and is the stderr value - of the command execution. - - Example: - tier_detach_start(testvol) - - """ - if mnode is None: - mnode = tc.servers[0] - - cmd = "gluster volume tier %s detach start --mode=script" % volname - return tc.run(mnode, cmd) - - -def tier_detach_status(volname, mnode=None): - """executes detach tier status on given volume - - Args: - volname (str): volume name - - Kwargs: - mnode (str): Node on which cmd has to be executed. - If None, defaults to servers[0]. - - Returns: - tuple: Tuple containing three elements (ret, out, err). - The first element 'ret' is of type 'int' and is the return value - of command execution. - - The second element 'out' is of type 'str' and is the stdout value - of the command execution. - - The third element 'err' is of type 'str' and is the stderr value - of the command execution. - - Example: - tier_detach_status(testvol) - - """ - if mnode is None: - mnode = tc.servers[0] - - cmd = "gluster volume tier %s detach status --mode=script" % volname - return tc.run(mnode, cmd) - - -def tier_detach_stop(volname, mnode=None): - """stops detaching tier on given volume - - Args: - volname (str): volume name - - Kwargs: - mnode (str): Node on which cmd has to be executed. - If None, defaults to servers[0]. - - Returns: - tuple: Tuple containing three elements (ret, out, err). - The first element 'ret' is of type 'int' and is the return value - of command execution. - - The second element 'out' is of type 'str' and is the stdout value - of the command execution. - - The third element 'err' is of type 'str' and is the stderr value - of the command execution. - - Example: - tier_detach_stop(testvol) - - """ - if mnode is None: - mnode = tc.servers[0] - - cmd = "gluster volume tier %s detach stop --mode=script" % volname - return tc.run(mnode, cmd) - - -def tier_detach_commit(volname, mnode=None): - """commits detach tier on given volume - - Args: - volname (str): volume name - - Kwargs: - mnode (str): Node on which cmd has to be executed. - If None, defaults to servers[0]. - - Returns: - tuple: Tuple containing three elements (ret, out, err). - The first element 'ret' is of type 'int' and is the return value - of command execution. - - The second element 'out' is of type 'str' and is the stdout value - of the command execution. - - The third element 'err' is of type 'str' and is the stderr value - of the command execution. - - Example: - tier_detach_commit(testvol) - - """ - if mnode is None: - mnode = tc.servers[0] - - cmd = "gluster volume tier %s detach commit --mode=script" % volname - return tc.run(mnode, cmd) - - -def tier_detach_force(volname, mnode=None): - """detaches tier forcefully on given volume - - Args: - volname (str): volume name - - Kwargs: - mnode (str): Node on which cmd has to be executed. - If None, defaults to servers[0]. - - Returns: - tuple: Tuple containing three elements (ret, out, err). - The first element 'ret' is of type 'int' and is the return value - of command execution. - - The second element 'out' is of type 'str' and is the stdout value - of the command execution. - - The third element 'err' is of type 'str' and is the stderr value - of the command execution. - - Example: - tier_detach_force(testvol) - - """ - if mnode is None: - mnode = tc.servers[0] - - cmd = "gluster volume tier %s detach force --mode=script" % volname - return tc.run(mnode, cmd) - - -def get_detach_tier_status(volname, mnode=None): - """Parse the output of 'gluster volume tier detach status' command. - - Args: - volname (str): volume name - - Kwargs: - mnode (str): Node on which command has to be executed. - If None, defaults to servers[0]. - - Returns: - NoneType: None if command execution fails, parse errors. - dict: dict on success. - - Examples: - >>> get_detach_tier_status("testvol", mnode = 'abc.lab.eng.xyz.com') - {'node': [{'files': '0', 'status': '3', 'lookups': '1', 'skipped': '0', - 'nodeName': 'localhost', 'failures': '0', 'runtime': '0.00', 'id': - '11336017-9561-4e88-9ac3-a94d4b403340', 'statusStr': 'completed', - 'size': '0'}, {'files': '0', 'status': '3', 'lookups': '0', 'skipped': - '0', 'nodeName': '10.70.47.16', 'failures': '0', 'runtime': '0.00', - 'id': 'a2b88b10-eba2-4f97-add2-8dc37df08b27', 'statusStr': 'completed', - 'size': '0'}], 'nodeCount': '4', 'aggregate': {'files': '0', 'status': - '3', 'lookups': '1', 'skipped': '0', 'failures': '0', 'runtime': '0.0', - 'statusStr': 'completed', 'size': '0'}} - """ - - if mnode is None: - mnode = tc.servers[0] - - cmd = "gluster volume tier %s detach status --xml" % volname - ret, out, _ = tc.run(mnode, cmd, verbose=False) - if ret != 0: - tc.logger.error("Failed to execute 'detach tier status' on node %s. " - "Hence failed to get detach tier status.", mnode) - return None - - try: - root = etree.XML(out) - except etree.ParseError: - tc.logger.error("Failed to parse the detach tier status xml output.") - return None - - tier_status = {} - tier_status["node"] = [] - for info in root.findall("volDetachTier"): - for element in info.getchildren(): - if element.tag == "node": - status_info = {} - for elmt in element.getchildren(): - status_info[elmt.tag] = elmt.text - tier_status[element.tag].append(status_info) - elif element.tag == "aggregate": - status_info = {} - for elmt in element.getchildren(): - status_info[elmt.tag] = elmt.text - tier_status[element.tag] = status_info - else: - tier_status[element.tag] = element.text - return tier_status - - -def tier_detach_start_and_get_taskid(volname, mnode=None): - """Parse the output of 'gluster volume tier detach start' command. - - Args: - volname (str): volume name - - Kwargs: - mnode (str): Node on which command has to be executed. - If None, defaults to servers[0]. - - Returns: - NoneType: None if command execution fails, parse errors. - dict: dict on success. - - Examples: - >>> tier_detach_start_and_get_taskid("testvol", - mnode = 'abc.lab.eng.xyz.com') - {'task-id': '8020835c-ff0d-4ea1-9f07-62dd067e92d4'} - """ - - if mnode is None: - mnode = tc.servers[0] - - cmd = "gluster volume tier %s detach start --xml" % volname - ret, out, _ = tc.run(mnode, cmd, verbose=False) - if ret != 0: - tc.logger.error("Failed to execute 'detach tier start' on node %s. " - "Hence failed to parse the detach tier start.", mnode) - return None - - try: - root = etree.XML(out) - except etree.ParseError: - tc.logger.error("Failed to parse the gluster detach tier " - "start xml output.") - return None - - tier_status = {} - for info in root.findall("volDetachTier"): - for element in info.getchildren(): - tier_status[element.tag] = element.text - return tier_status - - -def tier_detach_stop_and_get_status(volname, mnode=None): - """Parse the output of 'gluster volume tier detach stop' command. - - Args: - volname (str): volume name - - Kwargs: - mnode (str): Node on which command has to be executed. - If None, defaults to servers[0]. - - Returns: - NoneType: None if command execution fails, parse errors. - dict: dict on success. - - Examples: - >>> tier_detach_stop_and_get_status("testvol", - mnode = 'abc.lab.eng.xyz.com') - {'node': [{'files': '0', 'status': '3', 'lookups': '1', 'skipped': '0', - 'nodeName': 'localhost', 'failures': '0', 'runtime': '0.00', 'id': - '11336017-9561-4e88-9ac3-a94d4b403340', 'statusStr': 'completed', - 'size': '0'}, {'files': '0', 'status': '3', 'lookups': '0', 'skipped': - '0', 'nodeName': '10.70.47.16', 'failures': '0', 'runtime': '0.00', - 'id': 'a2b88b12-eba2-4f97-add2-8dc37df08b27', 'statusStr': 'completed', - 'size': '0'}], 'nodeCount': '4', 'aggregate': {'files': '0', 'status': - '3', 'lookups': '1', 'skipped': '0', 'failures': '0', 'runtime': '0.0', - 'statusStr': 'completed', 'size': '0'}} - """ - - if mnode is None: - mnode = tc.servers[0] - - cmd = "gluster volume tier %s detach stop --xml" % volname - ret, out, _ = tc.run(mnode, cmd, verbose=False) - if ret != 0: - tc.logger.error("Failed to execute 'tier start' on node %s. " - "Hence failed to parse the tier start.", mnode) - return None - - try: - root = etree.XML(out) - except etree.ParseError: - tc.logger.error("Failed to parse the gluster detach tier stop" - " xml output.") - return None - - tier_status = {} - tier_status["node"] = [] - for info in root.findall("volDetachTier"): - for element in info.getchildren(): - if element.tag == "node": - status_info = {} - for elmt in element.getchildren(): - status_info[elmt.tag] = elmt.text - tier_status[element.tag].append(status_info) - elif element.tag == "aggregate": - status_info = {} - for elmt in element.getchildren(): - status_info[elmt.tag] = elmt.text - tier_status[element.tag] = status_info - else: - tier_status[element.tag] = element.text - return tier_status - - -def wait_for_detach_tier_to_complete(volname, mnode=None, timeout=300): - """Waits for the detach tier to complete - - Args: - volname (str): volume name - - Kwargs: - mnode (str): Node on which command has to be executed. - If None, defaults to servers[0]. - timeout (int): timeout value to wait for detach tier to complete - - Returns: - True on success, False otherwise - - Examples: - >>> wait_for_detach_tier_to_complete("testvol") - """ - - if mnode is None: - mnode = tc.servers[0] - - count = 0 - flag = 0 - while (count < timeout): - status_info = get_detach_tier_status(volname, mnode=mnode) - if status_info is None: - return False - - status = status_info['aggregate']['statusStr'] - if status == 'completed': - flag = 1 - break - - time.sleep(10) - count = count + 10 - if not flag: - tc.logger.error("detach tier is not completed") - return False - else: - tc.logger.info("detach tier is successfully completed") - return True - - -def get_files_from_hot_tier(volname): - """Lists files from hot tier for the given volume - - Args: - volname (str): volume name - - Returns: - Emptylist: if there are no files in hot tier. - list: list of files in hot tier on success. - - Examples: - >>>get_files_from_hot_tier("testvol") - """ - - files = [] - subvols = distaflibs.gluster.volume_ops.get_subvols(volname) - for subvol in subvols['hot_tier_subvols']: - info = subvol[0].split(':') - file_list = list_files(info[1], server=info[0]) - for file in file_list: - if ".glusterfs" not in file: - files.append(file) - - return files - - -def get_files_from_cold_tier(volname): - """Lists files from cold tier for the given volume - - Args: - volname (str): volume name - - Returns: - Emptylist: if there are no files in cold tier. - list: list of files in cold tier on success. - - Examples: - >>>get_files_from_hot_tier("testvol") - """ - - files = [] - subvols = distaflibs.gluster.volume_ops.get_subvols(volname) - for subvol in subvols['cold_tier_subvols']: - info = subvol[0].split(':') - file_list = list_files(info[1], server=info[0]) - for file in file_list: - if ".glusterfs" not in file: - files.append(file) - - return files - - -def get_tier_promote_frequency(volname): - """Gets tier promote frequency value for given volume. - - Args: - volname (str): volume name - - Returns: - NoneType: None if command execution fails, parse errors. - str: promote frequency value on success. - - Examples: - >>>get_tier_promote_frequency("testvol") - """ - - vol_options = distaflibs.gluster.volume_ops.get_volume_option(volname) - if vol_options is None: - tc.logger.error("Failed to get volume options") - return None - - return vol_options['cluster.tier-promote-frequency'] - - -def get_tier_demote_frequency(volname): - """Gets tier demote frequency value for given volume. - - Args: - volname (str): volume name - - Returns: - NoneType: None if command execution fails, parse errors. - str: demote frequency value on success. - - Examples: - >>>get_tier_demote_frequency("testvol") - """ - - vol_options = distaflibs.gluster.volume_ops.get_volume_option(volname) - if vol_options is None: - tc.logger.error("Failed to get volume options") - return None - - return vol_options['cluster.tier-demote-frequency'] - - -def get_tier_mode(volname): - """Gets tier mode for given volume. - - Args: - volname (str): volume name - - Returns: - NoneType: None if command execution fails, parse errors. - str: tier mode on success. - - Examples: - >>>get_tier_mode("testvol") - """ - - vol_options = distaflibs.gluster.volume_ops.get_volume_option(volname) - if vol_options is None: - tc.logger.error("Failed to get volume options") - return None - - return vol_options['cluster.tier-mode'] - - -def get_tier_max_mb(volname): - """Gets tier max mb for given volume. - - Args: - volname (str): volume name - - Returns: - NoneType: None if command execution fails, parse errors. - str: tier max mb on success. - - Examples: - >>>get_tier_max_mb("testvol") - """ - - vol_options = distaflibs.gluster.volume_ops.get_volume_option(volname) - if vol_options is None: - tc.logger.error("Failed to get volume options") - return None - - return vol_options['cluster.tier-max-mb'] - - -def get_tier_max_files(volname): - """Gets tier max files for given volume. - - Args: - volname (str): volume name - - Returns: - NoneType: None if command execution fails, parse errors. - str: tier max files on success. - - Examples: - >>>get_tier_max_files("testvol") - """ - - vol_options = distaflibs.gluster.volume_ops.get_volume_option(volname) - if vol_options is None: - tc.logger.error("Failed to get volume options") - return None - - return vol_options['cluster.tier-max-files'] - - -def get_tier_watermark_high_limit(volname): - """Gets tier watermark high limit for given volume. - - Args: - volname (str): volume name - - Returns: - NoneType: None if command execution fails, parse errors. - str: tier watermark high limit on success. - - Examples: - >>>get_tier_watermark_high_limit("testvol") - """ - - vol_options = distaflibs.gluster.volume_ops.get_volume_option(volname) - if vol_options is None: - tc.logger.error("Failed to get volume options") - return None - - return vol_options['cluster.watermark-hi'] - - -def get_tier_watermark_low_limit(volname): - """Gets tier watermark low limit for given volume. - - Args: - volname (str): volume name - - Returns: - NoneType: None if command execution fails, parse errors. - str: tier watermark low limit on success. - - Examples: - >>>get_tier_watermark_low_limit("testvol") - """ - - vol_options = distaflibs.gluster.volume_ops.get_volume_option(volname) - if vol_options is None: - tc.logger.error("Failed to get volume options") - return None - - return vol_options['cluster.watermark-low'] - - -def set_tier_promote_frequency(volname, value): - """Sets tier promote frequency value for given volume. - - Args: - volname (str): volume name - value (str): promote frequency value - - Returns: - bool: True on success, False Otherwise - - Examples: - >>>set_tier_promote_frequency("testvol", '1000') - """ - - option = {'cluster.tier-promote-frequency': value} - - if not distaflibs.gluster.volume_ops.set_volume_option(volname, - options=option): - tc.logger.error("Failed to set promote frequency to %s" - % value) - return False - - return True - - -def set_tier_demote_frequency(volname, value): - """Sets tier demote frequency value for given volume. - - Args: - volname (str): volume name - value (str): demote frequency value - - Returns: - bool: True on success, False Otherwise - - Examples: - >>>set_tier_demote_frequency("testvol", "500") - """ - - option = {'cluster.tier-demote-frequency': value} - - if not distaflibs.gluster.volume_ops.set_volume_option(volname, - options=option): - tc.logger.error("Failed to set demote frequency to %s" - % value) - return False - - return True - - -def set_tier_mode(volname, value): - """Sets tier mode for given volume. - - Args: - volname (str): volume name - value (str): tier mode value - - Returns: - bool: True on success, False Otherwise - - Examples: - >>>set_tier_mode("testvol", "cache") - """ - - option = {'cluster.tier-mode': value} - - if not distaflibs.gluster.volume_ops.set_volume_option(volname, - options=option): - tc.logger.error("Failed to set tier mode to %s" - % value) - return False - - return True - - -def set_tier_max_mb(volname, value): - """Sets tier max mb for given volume. - - Args: - volname (str): volume name - value (str): tier mode value - - Returns: - bool: True on success, False Otherwise - - Examples: - >>>set_tier_max_mb("testvol", "50") - """ - - option = {'cluster.tier-max-mb': value} - - if not distaflibs.gluster.volume_ops.set_volume_option(volname, - options=option): - tc.logger.error("Failed to set tier max mb to %s" - % value) - return False - - return True - - -def set_tier_max_files(volname, value): - """Sets tier max files for given volume. - - Args: - volname (str): volume name - value (str): tier mode value - - Returns: - bool: True on success, False Otherwise - - Examples: - >>>set_tier_max_files("testvol", "10") - """ - - option = {'cluster.tier-max-files': value} - - if not distaflibs.gluster.volume_ops.set_volume_option(volname, - options=option): - tc.logger.error("Failed to set tier max files to %s" - % value) - return False - - return True - - -def set_tier_watermark_high_limit(volname, value): - """Sets tier watermark high limit for given volume. - - Args: - volname (str): volume name - value (str): tier mode value - - Returns: - bool: True on success, False Otherwise - - Examples: - >>>set_tier_watermark_high_limit("testvol", "95") - """ - - option = {'cluster.watermark-hi': value} - - if not distaflibs.gluster.volume_ops.set_volume_option(volname, - options=option): - tc.logger.error("Failed to set tier watermark high limit to %s" - % value) - return False - - return True - - -def set_tier_watermark_low_limit(volname, value): - """Sets tier watermark low limit for given volume. - - Args: - volname (str): volume name - value (str): tier mode value - - Returns: - bool: True on success, False Otherwise - - Examples: - >>>set_tier_watermark_low_limit("testvol", "40") - """ - - option = {'cluster.watermark-low': value} - - if not distaflibs.gluster.volume_ops.set_volume_option(volname, - options=option): - tc.logger.error("Failed to set tier watermark low limit to %s" - % value) - return False - - return True - - -def get_tier_pid(volname, mnode): - """Gets tier pid for given volume. - - Args: - volname (str): volume name - mnode (str): Node on which command has to be executed. - - Returns: - NoneType: None if command execution fails, parse errors. - str: pid of tier process on success. - - Examples: - >>>get_tier_pid("testvol", "abc.xyz.com") - """ - - cmd = ("ps -ef | grep -v grep | grep '/var/log/glusterfs/%s-tier.log' |" - "awk '{print $2}'" % volname) - ret, out, err = tc.run(mnode, cmd) - if ret != 0: - tc.logger.error("Failed to execute 'ps' cmd") - return None - - return out.strip("\n") - - -def is_tier_process_running(volname, mnode): - """Checks whether tier process is running - - Args: - volname (str): volume name - mnode (str): Node on which command has to be executed. - - Returns: - True on success, False otherwise - - Examples: - >>>is_tier_process_running("testvol", "abc.xyz.com") - """ - - pid = get_tier_pid(volname, mnode) - if pid == '': - return False - return True |