diff options
Diffstat (limited to 'swift/1.4.8/plugins/Glusterfs.py')
-rw-r--r-- | swift/1.4.8/plugins/Glusterfs.py | 131 |
1 files changed, 0 insertions, 131 deletions
diff --git a/swift/1.4.8/plugins/Glusterfs.py b/swift/1.4.8/plugins/Glusterfs.py deleted file mode 100644 index c176a247b..000000000 --- a/swift/1.4.8/plugins/Glusterfs.py +++ /dev/null @@ -1,131 +0,0 @@ -# Copyright (c) 2012 Red Hat, Inc. -# -# Licensed under the Apache License, Version 2.0 (the "License"); -# you may not use this file except in compliance with the License. -# You may obtain a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, -# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or -# implied. -# See the License for the specific language governing permissions and -# limitations under the License. -import logging -import os, fcntl, time -from ConfigParser import ConfigParser -from swift.common.utils import TRUE_VALUES -from swift.plugins.fs_utils import mkdirs - - -# -# Read the fs.conf file once at startup (module load) -# -_fs_conf = ConfigParser() -AUTH_ACCOUNT = 'auth' -MOUNT_IP = 'localhost' -REMOTE_CLUSTER = False -OBJECT_ONLY = False -if _fs_conf.read(os.path.join('/etc/swift', 'fs.conf')): - try: - AUTH_ACCOUNT = _fs_conf.get('DEFAULT', 'auth_account', 'auth') - except (NoSectionError, NoOptionError): - pass - try: - MOUNT_IP = _fs_conf.get('DEFAULT', 'mount_ip', 'localhost') - except (NoSectionError, NoOptionError): - pass - try: - REMOTE_CLUSTER = _fs_conf.get('DEFAULT', 'remote_cluster', False) in TRUE_VALUES - except (NoSectionError, NoOptionError): - pass - try: - OBJECT_ONLY = _fs_conf.get('DEFAULT', 'object_only', "no") in TRUE_VALUES - except (NoSectionError, NoOptionError): - pass -NAME = 'glusterfs' - - -def _busy_wait(full_mount_path): - # Iterate for definite number of time over a given - # interval for successful mount - for i in range(0, 5): - if os.path.ismount(os.path.join(full_mount_path)): - return True - time.sleep(2) - logging.error('Busy wait for mount timed out for mount %s', full_mount_path) - return False - -def mount(root, drive): - # FIXME: Possible thundering herd problem here - - el = _get_export_list() - for export in el: - if drive == export: - break - else: - logging.error('No export found in %r matching drive %s', el, drive) - return False - - # NOTE: root is typically the default value of /mnt/gluster-object - full_mount_path = os.path.join(root, drive) - if not os.path.isdir(full_mount_path): - mkdirs(full_mount_path) - - pid_dir = "/var/lib/glusterd/vols/%s/run/" % drive - pid_file = os.path.join(pid_dir, 'swift.pid'); - - if not os.path.exists(pid_dir): - mkdirs(pid_dir) - - fd = os.open(pid_file, os.O_CREAT|os.O_RDWR) - with os.fdopen(fd, 'r+b') as f: - try: - fcntl.lockf(f, fcntl.LOCK_EX|fcntl.LOCK_NB) - except: - ex = sys.exc_info()[1] - if isinstance(ex, IOError) and ex.errno in (EACCES, EAGAIN): - # This means that some other process is mounting the - # filesystem, so wait for the mount process to complete - return _busy_wait(full_mount_path) - - mnt_cmd = 'mount -t glusterfs %s:%s %s' % (MOUNT_IP, export, \ - full_mount_path) - if os.system(mnt_cmd) or not _busy_wait(full_mount_path): - logging.error('Mount failed %s: %s', NAME, mnt_cmd) - return False - return True - -def unmount(full_mount_path): - # FIXME: Possible thundering herd problem here - - umnt_cmd = 'umount %s 2>> /dev/null' % full_mount_path - if os.system(umnt_cmd): - logging.error('Unable to unmount %s %s' % (full_mount_path, NAME)) - -def _get_export_list(): - if REMOTE_CLUSTER: - cmnd = 'ssh %s gluster volume info' % MOUNT_IP - else: - cmnd = 'gluster volume info' - - export_list = [] - - if os.system(cmnd + ' >> /dev/null'): - if REMOTE_CLUSTER: - logging.error('Getting volume info failed %s, make sure to have '\ - 'passwordless ssh on %s', NAME, MOUNT_IP) - else: - logging.error('Getting volume failed %s', NAME) - else: - fp = os.popen(cmnd) - while True: - item = fp.readline() - if not item: - break - item = item.strip('\n').strip(' ') - if item.lower().startswith('volume name:'): - export_list.append(item.split(':')[1].strip(' ')) - - return export_list |