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# This file is part of the sos project: https://github.com/sosreport/sos
#
# This copyrighted material is made available to anyone wishing to use,
# modify, copy, or redistribute it subject to the terms and conditions of
# version 2 of the GNU General Public License.
#
# See the LICENSE file in the source distribution for further information.
from sos.plugins import Plugin, RedHatPlugin, DebianPlugin, UbuntuPlugin
import os.path
import re
class Dlm(Plugin, RedHatPlugin, DebianPlugin, UbuntuPlugin):
"""DLM (Distributed lock manager)"""
plugin_name = "dlm"
profiles = ("cluster", )
packages = ["cman", "dlm", "pacemaker"]
option_list = [
("lockdump", "capture lock dumps for DLM", "slow", False),
]
debugfs_path = "/sys/kernel/debug"
_debugfs_cleanup = False
def setup(self):
self.add_copy_spec([
"/etc/sysconfig/dlm"
])
self.add_cmd_output([
"dlm_tool log_plock",
"dlm_tool dump",
"dlm_tool ls -n"
])
if self.get_option("lockdump"):
self.do_lockdump()
def do_lockdump(self):
if self._mount_debug():
dlm_tool = "dlm_tool ls"
result = self.call_ext_prog(dlm_tool)
if result["status"] != 0:
return
lock_exp = r'^name\s+([^\s]+)$'
lock_re = re.compile(lock_exp, re.MULTILINE)
for lockspace in lock_re.findall(result["output"]):
self.add_cmd_output(
"dlm_tool lockdebug -svw '%s'" % lockspace,
suggest_filename="dlm_locks_%s" % lockspace
)
def _mount_debug(self):
if not os.path.ismount(self.debugfs_path):
self._debugfs_cleanup = True
r = self.call_ext_prog("mount -t debugfs debugfs %s"
% self.debugfs_path)
if r["status"] != 0:
self._log_error("debugfs not mounted and mount attempt failed")
self._debugfs_cleanup = False
return os.path.ismount(self.debugfs_path)
def postproc(self):
if self._debugfs_cleanup and os.path.ismount(self.debugfs_path):
r = self.call_ext_prog("umount %s" % self.debugfs_path)
if r["status"] != 0:
self._log_error("could not unmount %s" % self.debugfs_path)
return
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