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#!/usr/bin/env python
#
# This is a work in progress, adding functionality as I need it.
#
# Chad Kerner - chad.kerner@gmail.com
#
from __future__ import print_function
from subprocess import Popen, PIPE
import sys
import shlex
def run_cmd( cmdstr=None ):
"""
Wrapper around subprocess module calls.
"""
if not cmdstr:
return None
cmd = shlex.split(cmdstr)
subp = Popen(cmd, stdout=PIPE, stderr=PIPE)
(outdata, errdata) = subp.communicate()
if subp.returncode != 0:
msg = "Error running cmd '{0}: {1}'".format(cmdstr,errdata)
print( msg )
raise UserWarning( msg )
return( outdata )
class Cluster:
"""
This class will collect the information about the cluster.
"""
def __init__( self ):
self.get_cluster_info()
self.get_nsd_info()
def get_nsd_info( self ):
"""
This routing parses the mmlsnsd command.
"""
self.nsd_info = {}
fsdevs = {}
cmd_out = run_cmd("/usr/lpp/mmfs/bin/mmlsnsd")
for line in cmd_out.splitlines():
line.rstrip()
# Ignore blank lines
if not line:
continue
# Ignore dashed lines
if '----------' in line:
continue
# Ignore header lines
if 'File system' in line:
continue
if 'free disk' in line:
nsd_name = line.split()[2]
fsname = 'free'
servers = (line.split()[3]).split(',')
else:
nsd_name = line.split()[1]
fsname = line.split()[0]
servers = (line.split()[2]).split(',')
fsdevs[fsname] = 1
self.nsd_info[nsd_name] = {}
self.nsd_info[nsd_name]['usage'] = fsname
self.nsd_info[nsd_name]['servers'] = servers
self.gpfsdevs = fsdevs.keys()
def get_cluster_info( self ):
"""
This routine parses the mmlscluster command.
"""
self.cluster_info = {}
cmd_out = run_cmd("/usr/lpp/mmfs/bin/mmlscluster")
found_nodes = 0
for line in cmd_out.splitlines():
line.rstrip()
# Ignore blank lines
if not line:
continue
# Ignore dashed lines
if '----------' in line:
continue
if '==========' in line:
continue
if found_nodes >= 1:
nodeid = line.split()[0]
daemonname = line.split()[1]
ipaddr = line.split()[2]
adminname = line.split()[3]
self.cluster_info['nodes'][nodeid] = {}
self.cluster_info['nodes'][nodeid]['daemon_name'] = daemonname
self.cluster_info['nodes'][nodeid]['ip'] = ipaddr
self.cluster_info['nodes'][nodeid]['admin_name'] = adminname
if 'Node Daemon' in line:
found_nodes = found_nodes + 1
self.cluster_info['nodes'] = {}
if 'GPFS cluster name' in line:
self.cluster_info['name'] = line.split()[3]
if 'GPFS cluster id' in line:
self.cluster_info['id'] = line.split()[3]
if 'GPFS UID domain' in line:
self.cluster_info['uid'] = line.split()[3]
if 'Remote shell command' in line:
self.cluster_info['rsh'] = line.split()[3]
if 'Remote file copy command' in line:
self.cluster_info['rcp'] = line.split()[4]
if 'Primary server' in line:
self.cluster_info['primary'] = line.split()[2]
if 'Secondary server' in line:
self.cluster_info['secondary'] = line.split()[2]
def dump( self ):
if debug == 1:
print("Cluster Information")
for key in self.cluster_info.keys():
print("{0} -> {1}".format(key, self.cluster_info[key]))
if debug == 2:
print("\nNSD Information")
for key in self.nsd_info.keys():
print("{0} -> FS: {1} Servers: {2}".format(key, self.nsd_info[key]['usage'], self.nsd_info[key]['servers']))
class Filesystem:
"""
This class will collect the information about the specified GPFS device.
"""
def __init__( self, gpfsdev ):
if not gpfsdev:
raise ValueError('NoDevice')
self.gpfsdev = gpfsdev
self.filesys = {}
cmd_out = run_cmd("/usr/lpp/mmfs/bin/mmlsfs {0} -Y".format(self.gpfsdev))
for line in cmd_out.splitlines():
line.rstrip()
# Ignore blank lines
if not line:
continue
# Ignore HEADER line
if 'HEADER' in line:
continue
key = line.split(':')[7]
value = line.split(':')[8]
self.filesys[key] = value
def __getitem__( self, key ):
return self.filesys[key]
if __name__ == '__main__':
pass
Clstr = Cluster()
#Clstr.dump()
print(Clstr.gpfsdevs)
myFs = Filesystem( 'wvu' )
FSa = Filesystem( 'des003' )
print(myFs['disks'])
print(FSa['disks'])
try:
F = Filesystem('')
except:
print("No Filesystem device specified.")
else:
print(F[disks])