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#!/usr/bin/env python
# -*- python-mode -*-
"""Parse /proc/self/mountstats and display it in human readable form
"""
from __future__ import print_function
__copyright__ = """
Copyright (C) 2005, Chuck Lever <cel@netapp.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License version 2 as
published by the Free Software Foundation.
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""
import sys, os, time
from operator import itemgetter, add
try:
import argparse
except ImportError:
print('%s: Failed to import argparse - make sure argparse is installed!'
% sys.argv[0])
sys.exit(1)
Mountstats_version = '0.3'
def difference(x, y):
"""Used for a map() function
"""
return x - y
NfsEventCounters = [
'inoderevalidates',
'dentryrevalidates',
'datainvalidates',
'attrinvalidates',
'vfsopen',
'vfslookup',
'vfspermission',
'vfsupdatepage',
'vfsreadpage',
'vfsreadpages',
'vfswritepage',
'vfswritepages',
'vfsreaddir',
'vfssetattr',
'vfsflush',
'vfsfsync',
'vfslock',
'vfsrelease',
'congestionwait',
'setattrtrunc',
'extendwrite',
'sillyrenames',
'shortreads',
'shortwrites',
'delay',
'pnfsreads',
'pnfswrites'
]
NfsByteCounters = [
'normalreadbytes',
'normalwritebytes',
'directreadbytes',
'directwritebytes',
'serverreadbytes',
'serverwritebytes',
'readpages',
'writepages'
]
XprtUdpCounters = [
'port',
'bind_count',
'rpcsends',
'rpcreceives',
'badxids',
'inflightsends',
'backlogutil'
]
XprtTcpCounters = [
'port',
'bind_count',
'connect_count',
'connect_time',
'idle_time',
'rpcsends',
'rpcreceives',
'badxids',
'inflightsends',
'backlogutil'
]
XprtRdmaCounters = [
'port',
'bind_count',
'connect_count',
'connect_time',
'idle_time',
'rpcsends',
'rpcreceives',
'badxids',
'backlogutil',
'read_chunks',
'write_chunks',
'reply_chunks',
'total_rdma_req',
'total_rdma_rep',
'pullup',
'fixup',
'hardway',
'failed_marshal',
'bad_reply'
]
Nfsv3ops = [
'NULL',
'GETATTR',
'SETATTR',
'LOOKUP',
'ACCESS',
'READLINK',
'READ',
'WRITE',
'CREATE',
'MKDIR',
'SYMLINK',
'MKNOD',
'REMOVE',
'RMDIR',
'RENAME',
'LINK',
'READDIR',
'READDIRPLUS',
'FSSTAT',
'FSINFO',
'PATHCONF',
'COMMIT'
]
Nfsv4ops = [
'NULL',
'READ',
'WRITE',
'COMMIT',
'OPEN',
'OPEN_CONFIRM',
'OPEN_NOATTR',
'OPEN_DOWNGRADE',
'CLOSE',
'SETATTR',
'FSINFO',
'RENEW',
'SETCLIENTID',
'SETCLIENTID_CONFIRM',
'LOCK',
'LOCKT',
'LOCKU',
'ACCESS',
'GETATTR',
'LOOKUP',
'LOOKUP_ROOT',
'REMOVE',
'RENAME',
'LINK',
'SYMLINK',
'CREATE',
'PATHCONF',
'STATFS',
'READLINK',
'READDIR',
'SERVER_CAPS',
'DELEGRETURN',
'GETACL',
'SETACL',
'FS_LOCATIONS',
'RELEASE_LOCKOWNER',
'SECINFO',
'EXCHANGE_ID',
'CREATE_SESSION',
'DESTROY_SESSION',
'SEQUENCE',
'GET_LEASE_TIME',
'RECLAIM_COMPLETE',
'LAYOUTGET',
'GETDEVICEINFO',
'LAYOUTCOMMIT',
'LAYOUTRETURN',
'FREE_STATEID'
]
class DeviceData:
"""DeviceData objects provide methods for parsing and displaying
data for a single mount grabbed from /proc/self/mountstats
"""
def __init__(self):
self.__nfs_data = dict()
self.__rpc_data = dict()
self.__rpc_data['ops'] = []
def __parse_nfs_line(self, words):
if words[0] == 'device':
self.__nfs_data['export'] = words[1]
self.__nfs_data['mountpoint'] = words[4]
self.__nfs_data['fstype'] = words[7]
if words[7].find('nfs') != -1 and words[7] != 'nfsd':
self.__nfs_data['statvers'] = words[8]
elif 'nfs' in words or 'nfs4' in words:
self.__nfs_data['export'] = words[0]
self.__nfs_data['mountpoint'] = words[3]
self.__nfs_data['fstype'] = words[6]
if words[6].find('nfs') != -1 and words[6] != 'nfsd':
self.__nfs_data['statvers'] = words[7]
elif words[0] == 'age:':
self.__nfs_data['age'] = int(words[1])
elif words[0] == 'opts:':
self.__nfs_data['mountoptions'] = ''.join(words[1:]).split(',')
elif words[0] == 'caps:':
self.__nfs_data['servercapabilities'] = ''.join(words[1:]).split(',')
elif words[0] == 'nfsv4:':
self.__nfs_data['nfsv4flags'] = ''.join(words[1:]).split(',')
elif words[0] == 'sec:':
keys = ''.join(words[1:]).split(',')
self.__nfs_data['flavor'] = int(keys[0].split('=')[1])
self.__nfs_data['pseudoflavor'] = 0
if self.__nfs_data['flavor'] == 6:
self.__nfs_data['pseudoflavor'] = int(keys[1].split('=')[1])
elif words[0] == 'events:':
i = 1
for key in NfsEventCounters:
try:
self.__nfs_data[key] = int(words[i])
except IndexError as err:
self.__nfs_data[key] = 0
i += 1
elif words[0] == 'bytes:':
i = 1
for key in NfsByteCounters:
self.__nfs_data[key] = int(words[i])
i += 1
def __parse_rpc_line(self, words):
if words[0] == 'RPC':
self.__rpc_data['statsvers'] = float(words[3])
self.__rpc_data['programversion'] = words[5]
elif words[0] == 'xprt:':
self.__rpc_data['protocol'] = words[1]
if words[1] == 'udp':
i = 2
for key in XprtUdpCounters:
self.__rpc_data[key] = int(words[i])
i += 1
elif words[1] == 'tcp':
i = 2
for key in XprtTcpCounters:
self.__rpc_data[key] = int(words[i])
i += 1
elif words[1] == 'rdma':
i = 2
for key in XprtRdmaCounters:
self.__rpc_data[key] = int(words[i])
i += 1
elif words[0] == 'per-op':
self.__rpc_data['per-op'] = words
else:
op = words[0][:-1]
self.__rpc_data['ops'] += [op]
self.__rpc_data[op] = [int(word) for word in words[1:]]
def parse_stats(self, lines):
"""Turn a list of lines from a mount stat file into a
dictionary full of stats, keyed by name
"""
found = False
for line in lines:
words = line.split()
if len(words) == 0:
continue
if (not found and words[0] != 'RPC'):
self.__parse_nfs_line(words)
continue
found = True
self.__parse_rpc_line(words)
def is_nfs_mountpoint(self):
"""Return True if this is an NFS or NFSv4 mountpoint,
otherwise return False
"""
if self.__nfs_data['fstype'] == 'nfs':
return True
elif self.__nfs_data['fstype'] == 'nfs4':
return True
return False
def nfs_version(self):
if self.is_nfs_mountpoint():
prog, vers = self.__rpc_data['programversion'].split('/')
return int(vers)
def display_raw_stats(self):
"""Prints out stats in the same format as /proc/self/mountstats
"""
print('device %s mounted on %s with fstype %s %s' % \
(self.__nfs_data['export'], self.__nfs_data['mountpoint'], \
self.__nfs_data['fstype'], self.__nfs_data['statvers']))
print('\topts:\t%s' % ','.join(self.__nfs_data['mountoptions']))
print('\tage:\t%d' % self.__nfs_data['age'])
print('\tcaps:\t%s' % ','.join(self.__nfs_data['servercapabilities']))
print('\tsec:\tflavor=%d,pseudoflavor=%d' % (self.__nfs_data['flavor'], \
self.__nfs_data['pseudoflavor']))
print('\tevents:\t%s' % " ".join([str(self.__nfs_data[key]) for key in NfsEventCounters]))
print('\tbytes:\t%s' % " ".join([str(self.__nfs_data[key]) for key in NfsByteCounters]))
print('\tRPC iostats version: %1.1f p/v: %s (nfs)' % (self.__rpc_data['statsvers'], \
self.__rpc_data['programversion']))
if self.__rpc_data['protocol'] == 'udp':
print('\txprt:\tudp %s' % " ".join([str(self.__rpc_data[key]) for key in XprtUdpCounters]))
elif self.__rpc_data['protocol'] == 'tcp':
print('\txprt:\ttcp %s' % " ".join([str(self.__rpc_data[key]) for key in XprtTcpCounters]))
elif self.__rpc_data['protocol'] == 'rdma':
print('\txprt:\trdma %s' % " ".join([str(self.__rpc_data[key]) for key in XprtRdmaCounters]))
else:
raise Exception('Unknown RPC transport protocol %s' % self.__rpc_data['protocol'])
print('\tper-op statistics')
prog, vers = self.__rpc_data['programversion'].split('/')
if vers == '3':
for op in Nfsv3ops:
print('\t%12s: %s' % (op, " ".join(str(x) for x in self.__rpc_data[op])))
elif vers == '4':
for op in Nfsv4ops:
print('\t%12s: %s' % (op, " ".join(str(x) for x in self.__rpc_data[op])))
else:
print('\tnot implemented for version %d' % vers)
print()
def display_stats_header(self):
print('Stats for %s mounted on %s:' % \
(self.__nfs_data['export'], self.__nfs_data['mountpoint']))
def display_nfs_options(self):
"""Pretty-print the NFS options
"""
self.display_stats_header()
print(' NFS mount options: %s' % ','.join(self.__nfs_data['mountoptions']))
print(' NFS server capabilities: %s' % ','.join(self.__nfs_data['servercapabilities']))
if 'nfsv4flags' in self.__nfs_data:
print(' NFSv4 capability flags: %s' % ','.join(self.__nfs_data['nfsv4flags']))
if 'pseudoflavor' in self.__nfs_data:
print(' NFS security flavor: %d pseudoflavor: %d' % \
(self.__nfs_data['flavor'], self.__nfs_data['pseudoflavor']))
else:
print(' NFS security flavor: %d' % self.__nfs_data['flavor'])
def display_nfs_events(self):
"""Pretty-print the NFS event counters
"""
print()
print('Cache events:')
print(' data cache invalidated %d times' % self.__nfs_data['datainvalidates'])
print(' attribute cache invalidated %d times' % self.__nfs_data['attrinvalidates'])
print()
print('VFS calls:')
print(' VFS requested %d inode revalidations' % self.__nfs_data['inoderevalidates'])
print(' VFS requested %d dentry revalidations' % self.__nfs_data['dentryrevalidates'])
print()
print(' VFS called nfs_readdir() %d times' % self.__nfs_data['vfsreaddir'])
print(' VFS called nfs_lookup() %d times' % self.__nfs_data['vfslookup'])
print(' VFS called nfs_permission() %d times' % self.__nfs_data['vfspermission'])
print(' VFS called nfs_file_open() %d times' % self.__nfs_data['vfsopen'])
print(' VFS called nfs_file_flush() %d times' % self.__nfs_data['vfsflush'])
print(' VFS called nfs_lock() %d times' % self.__nfs_data['vfslock'])
print(' VFS called nfs_fsync() %d times' % self.__nfs_data['vfsfsync'])
print(' VFS called nfs_file_release() %d times' % self.__nfs_data['vfsrelease'])
print()
print('VM calls:')
print(' VFS called nfs_readpage() %d times' % self.__nfs_data['vfsreadpage'])
print(' VFS called nfs_readpages() %d times' % self.__nfs_data['vfsreadpages'])
print(' VFS called nfs_writepage() %d times' % self.__nfs_data['vfswritepage'])
print(' VFS called nfs_writepages() %d times' % self.__nfs_data['vfswritepages'])
print()
print('Generic NFS counters:')
print(' File size changing operations:')
print(' truncating SETATTRs: %d extending WRITEs: %d' % \
(self.__nfs_data['setattrtrunc'], self.__nfs_data['extendwrite']))
print(' %d silly renames' % self.__nfs_data['sillyrenames'])
print(' short reads: %d short writes: %d' % \
(self.__nfs_data['shortreads'], self.__nfs_data['shortwrites']))
print(' NFSERR_DELAYs from server: %d' % self.__nfs_data['delay'])
def display_nfs_bytes(self):
"""Pretty-print the NFS event counters
"""
print()
print('NFS byte counts:')
print(' applications read %d bytes via read(2)' % self.__nfs_data['normalreadbytes'])
print(' applications wrote %d bytes via write(2)' % self.__nfs_data['normalwritebytes'])
print(' applications read %d bytes via O_DIRECT read(2)' % self.__nfs_data['directreadbytes'])
print(' applications wrote %d bytes via O_DIRECT write(2)' % self.__nfs_data['directwritebytes'])
print(' client read %d bytes via NFS READ' % self.__nfs_data['serverreadbytes'])
print(' client wrote %d bytes via NFS WRITE' % self.__nfs_data['serverwritebytes'])
def display_rpc_generic_stats(self):
"""Pretty-print the generic RPC stats
"""
sends = self.__rpc_data['rpcsends']
print()
print('RPC statistics:')
print(' %d RPC requests sent, %d RPC replies received (%d XIDs not found)' % \
(sends, self.__rpc_data['rpcreceives'], self.__rpc_data['badxids']))
if sends != 0:
print(' average backlog queue length: %d' % \
(float(self.__rpc_data['backlogutil']) / sends))
def display_rpc_op_stats(self):
"""Pretty-print the per-op stats
"""
sends = self.__rpc_data['rpcsends']
allstats = []
for op in self.__rpc_data['ops']:
allstats.append([op] + self.__rpc_data[op])
print()
for stats in sorted(allstats, key=itemgetter(1), reverse=True):
count = stats[1]
if count != 0:
print('%s:' % stats[0])
print('\t%d ops (%d%%)' % \
(count, ((count * 100) / sends)), end=' ')
retrans = stats[2] - count
if retrans != 0:
print('\t%d retrans (%d%%)' % (retrans, ((retrans * 100) / count)), end=' ')
print('\t%d major timeouts' % stats[3])
else:
print('')
print('\tavg bytes sent per op: %d\tavg bytes received per op: %d' % \
(stats[4] / count, stats[5] / count))
print('\tbacklog wait: %f' % (float(stats[6]) / count), end=' ')
print('\tRTT: %f' % (float(stats[7]) / count), end=' ')
print('\ttotal execute time: %f (milliseconds)' % \
(float(stats[8]) / count))
def client_rpc_stats(self):
"""Tally high-level rpc stats for the nfsstat command
"""
sends = 0
trans = 0
authrefrsh = 0
for op in self.__rpc_data['ops']:
sends += self.__rpc_data[op][0]
trans += self.__rpc_data[op][1]
retrans = trans - sends
# authrefresh stats don't actually get captured in
# /proc/self/mountstats, so we fudge it here
authrefrsh = sends
return (sends, trans, authrefrsh)
def display_nfsstat_stats(self):
"""Pretty-print nfsstat-style stats
"""
sends = 0
for op in self.__rpc_data['ops']:
sends += self.__rpc_data[op][0]
if sends == 0:
return
print()
vers = self.nfs_version()
print('Client nfs v%d' % vers)
info = []
for op in self.__rpc_data['ops']:
print('%-13s' % str.lower(op)[:12], end='')
count = self.__rpc_data[op][0]
pct = (count * 100) / sends
info.append((count, pct))
if (self.__rpc_data['ops'].index(op) + 1) % 6 == 0:
print()
for (count, pct) in info:
print('%-8u%3u%% ' % (count, pct), end='')
print()
info = []
print()
if len(info) > 0:
for (count, pct) in info:
print('%-8u%3u%% ' % (count, pct), end='')
print()
def compare_iostats(self, old_stats):
"""Return the difference between two sets of stats
"""
if old_stats.__nfs_data['age'] > self.__nfs_data['age']:
return self
result = DeviceData()
protocol = self.__rpc_data['protocol']
# copy self into result
for key, value in self.__nfs_data.items():
result.__nfs_data[key] = value
for key, value in self.__rpc_data.items():
result.__rpc_data[key] = value
# compute the difference of each item in the list
# note the copy loop above does not copy the lists, just
# the reference to them. so we build new lists here
# for the result object.
for op in result.__rpc_data['ops']:
result.__rpc_data[op] = list(map(difference, self.__rpc_data[op], old_stats.__rpc_data[op]))
# update the remaining keys
if protocol == 'udp':
for key in XprtUdpCounters:
result.__rpc_data[key] -= old_stats.__rpc_data[key]
elif protocol == 'tcp':
for key in XprtTcpCounters:
result.__rpc_data[key] -= old_stats.__rpc_data[key]
elif protocol == 'rdma':
for key in XprtRdmaCounters:
result.__rpc_data[key] -= old_stats.__rpc_data[key]
result.__nfs_data['age'] -= old_stats.__nfs_data['age']
for key in NfsEventCounters:
result.__nfs_data[key] -= old_stats.__nfs_data[key]
for key in NfsByteCounters:
result.__nfs_data[key] -= old_stats.__nfs_data[key]
return result
def setup_accumulator(self, ops):
"""Initialize a DeviceData instance to tally stats for all mountpoints
with the same major version. This is for the nfsstat command.
"""
if ops == Nfsv3ops:
self.__rpc_data['programversion'] = '100003/3'
self.__nfs_data['fstype'] = 'nfs'
elif ops == Nfsv4ops:
self.__rpc_data['programversion'] = '100003/4'
self.__nfs_data['fstype'] = 'nfs4'
self.__rpc_data['ops'] = ops
for op in ops:
self.__rpc_data[op] = [0 for i in range(8)]
def accumulate_iostats(self, new_stats):
"""Accumulate counters from all RPC op buckets in new_stats. This is
for the nfsstat command.
"""
for op in new_stats.__rpc_data['ops']:
self.__rpc_data[op] = list(map(add, self.__rpc_data[op], new_stats.__rpc_data[op]))
def __print_rpc_op_stats(self, op, sample_time):
"""Print generic stats for one RPC op
"""
if op not in self.__rpc_data:
return
rpc_stats = self.__rpc_data[op]
ops = float(rpc_stats[0])
retrans = float(rpc_stats[1] - rpc_stats[0])
kilobytes = float(rpc_stats[3] + rpc_stats[4]) / 1024
rtt = float(rpc_stats[6])
exe = float(rpc_stats[7])
# prevent floating point exceptions
if ops != 0:
kb_per_op = kilobytes / ops
retrans_percent = (retrans * 100) / ops
rtt_per_op = rtt / ops
exe_per_op = exe / ops
else:
kb_per_op = 0.0
retrans_percent = 0.0
rtt_per_op = 0.0
exe_per_op = 0.0
op += ':'
print(format(op.lower(), '<16s'), end='')
print(format('ops/s', '>8s'), end='')
print(format('kB/s', '>16s'), end='')
print(format('kB/op', '>16s'), end='')
print(format('retrans', '>16s'), end='')
print(format('avg RTT (ms)', '>16s'), end='')
print(format('avg exe (ms)', '>16s'))
print(format((ops / sample_time), '>24.3f'), end='')
print(format((kilobytes / sample_time), '>16.3f'), end='')
print(format(kb_per_op, '>16.3f'), end='')
retransmits = '{0:>10.0f} ({1:>3.1f}%)'.format(retrans, retrans_percent).strip()
print(format(retransmits, '>16'), end='')
print(format(rtt_per_op, '>16.3f'), end='')
print(format(exe_per_op, '>16.3f'))
def display_iostats(self, sample_time):
"""Display NFS and RPC stats in an iostat-like way
"""
sends = float(self.__rpc_data['rpcsends'])
if sample_time == 0:
sample_time = float(self.__nfs_data['age'])
# sample_time could still be zero if the export was just mounted.
# Set it to 1 to avoid divide by zero errors in this case since we'll
# likely still have relevant mount statistics to show.
#
if sample_time == 0:
sample_time = 1;
if sends != 0:
backlog = (float(self.__rpc_data['backlogutil']) / sends) / sample_time
else:
backlog = 0.0
print()
print('%s mounted on %s:' % \
(self.__nfs_data['export'], self.__nfs_data['mountpoint']))
print()
print(format('ops/s', '>16') + format('rpc bklog', '>16'))
print(format((sends / sample_time), '>16.3f'), end='')
print(format(backlog, '>16.3f'))
print()
self.__print_rpc_op_stats('READ', sample_time)
self.__print_rpc_op_stats('WRITE', sample_time)
sys.stdout.flush()
def parse_stats_file(f):
"""pop the contents of a mountstats file into a dictionary,
keyed by mount point. each value object is a list of the
lines in the mountstats file corresponding to the mount
point named in the key.
"""
ms_dict = dict()
key = ''
f.seek(0)
for line in f.readlines():
words = line.split()
if len(words) == 0:
continue
if words[0] == 'device':
key = words[4]
new = [ line.strip() ]
else:
new += [ line.strip() ]
ms_dict[key] = new
return ms_dict
def print_mountstats(stats, nfs_only, rpc_only, raw):
if nfs_only:
stats.display_nfs_options()
stats.display_nfs_events()
stats.display_nfs_bytes()
elif rpc_only:
stats.display_stats_header()
stats.display_rpc_generic_stats()
stats.display_rpc_op_stats()
elif raw:
stats.display_raw_stats()
else:
stats.display_nfs_options()
stats.display_nfs_bytes()
stats.display_rpc_generic_stats()
stats.display_rpc_op_stats()
print()
def mountstats_command(args):
"""Mountstats command
"""
mountstats = parse_stats_file(args.infile)
mountpoints = [os.path.normpath(mp) for mp in args.mountpoints]
# make certain devices contains only NFS mount points
if len(mountpoints) > 0:
check = []
for device in mountpoints:
stats = DeviceData()
try:
stats.parse_stats(mountstats[device])
if stats.is_nfs_mountpoint():
check += [device]
except KeyError:
continue
mountpoints = check
else:
for device, descr in mountstats.items():
stats = DeviceData()
stats.parse_stats(descr)
if stats.is_nfs_mountpoint():
mountpoints += [device]
if len(mountpoints) == 0:
print('No NFS mount points were found')
return 1
if args.since:
old_mountstats = parse_stats_file(args.since)
for mp in mountpoints:
stats = DeviceData()
stats.parse_stats(mountstats[mp])
if not args.since:
print_mountstats(stats, args.nfs_only, args.rpc_only, args.raw)
elif args.since and mp not in old_mountstats:
print_mountstats(stats, args.nfs_only, args.rpc_only, args.raw)
else:
old_stats = DeviceData()
old_stats.parse_stats(old_mountstats[mp])
diff_stats = stats.compare_iostats(old_stats)
print_mountstats(diff_stats, args.nfs_only, args.rpc_only, args.raw)
args.infile.close()
if args.since:
args.since.close()
return 0
def nfsstat_command(args):
"""nfsstat-like command for NFS mount points
"""
mountstats = parse_stats_file(args.infile)
mountpoints = [os.path.normpath(mp) for mp in args.mountpoints]
v3stats = DeviceData()
v3stats.setup_accumulator(Nfsv3ops)
v4stats = DeviceData()
v4stats.setup_accumulator(Nfsv4ops)
# ensure stats get printed if neither v3 nor v4 was specified
if args.show_v3 or args.show_v4:
show_both = False
else:
show_both = True
# make certain devices contains only NFS mount points
if len(mountpoints) > 0:
check = []
for device in mountpoints:
stats = DeviceData()
try:
stats.parse_stats(mountstats[device])
if stats.is_nfs_mountpoint():
check += [device]
except KeyError:
continue
mountpoints = check
else:
for device, descr in mountstats.items():
stats = DeviceData()
stats.parse_stats(descr)
if stats.is_nfs_mountpoint():
mountpoints += [device]
if len(mountpoints) == 0:
print('No NFS mount points were found')
return 1
if args.since:
old_mountstats = parse_stats_file(args.since)
for mp in mountpoints:
stats = DeviceData()
stats.parse_stats(mountstats[mp])
vers = stats.nfs_version()
if not args.since:
acc_stats = stats
elif args.since and mp not in old_mountstats:
acc_stats = stats
else:
old_stats = DeviceData()
old_stats.parse_stats(old_mountstats[mp])
acc_stats = stats.compare_iostats(old_stats)
if vers == 3 and (show_both or args.show_v3):
v3stats.accumulate_iostats(acc_stats)
elif vers == 4 and (show_both or args.show_v4):
v4stats.accumulate_iostats(acc_stats)
sends, retrans, authrefrsh = map(add, v3stats.client_rpc_stats(), v4stats.client_rpc_stats())
print('Client rpc stats:')
print('calls retrans authrefrsh')
print('%-11u%-11u%-11u' % (sends, retrans, authrefrsh))
if show_both or args.show_v3:
v3stats.display_nfsstat_stats()
if show_both or args.show_v4:
v4stats.display_nfsstat_stats()
args.infile.close()
if args.since:
args.since.close()
return 0
def print_iostat_summary(old, new, devices, time):
for device in devices:
stats = DeviceData()
stats.parse_stats(new[device])
if not old or device not in old:
stats.display_iostats(time)
else:
old_stats = DeviceData()
old_stats.parse_stats(old[device])
diff_stats = stats.compare_iostats(old_stats)
diff_stats.display_iostats(time)
def iostat_command(args):
"""iostat-like command for NFS mount points
"""
mountstats = parse_stats_file(args.infile)
devices = [os.path.normpath(mp) for mp in args.mountpoints]
if args.since:
old_mountstats = parse_stats_file(args.since)
else:
old_mountstats = None
# make certain devices contains only NFS mount points
if len(devices) > 0:
check = []
for device in devices:
stats = DeviceData()
try:
stats.parse_stats(mountstats[device])
if stats.is_nfs_mountpoint():
check += [device]
except KeyError:
continue
devices = check
else:
for device, descr in mountstats.items():
stats = DeviceData()
stats.parse_stats(descr)
if stats.is_nfs_mountpoint():
devices += [device]
if len(devices) == 0:
print('No NFS mount points were found')
return 1
sample_time = 0
if args.interval is None:
print_iostat_summary(old_mountstats, mountstats, devices, sample_time)
return
if args.count is not None:
count = args.count
while count != 0:
print_iostat_summary(old_mountstats, mountstats, devices, sample_time)
old_mountstats = mountstats
time.sleep(args.interval)
sample_time = args.interval
mountstats = parse_stats_file(args.infile)
count -= 1
else:
while True:
print_iostat_summary(old_mountstats, mountstats, devices, sample_time)
old_mountstats = mountstats
time.sleep(args.interval)
sample_time = args.interval
mountstats = parse_stats_file(args.infile)
args.infile.close()
if args.since:
args.since.close()
return 0
class ICMAction(argparse.Action):
"""Custom action to deal with interval, count, and mountpoints.
"""
def __call__(self, parser, namespace, values, option_string=None):
if namespace.mountpoints is None:
namespace.mountpoints = []
if values is None:
return
elif (type(values) == type([])):
for value in values:
self._handle_one(namespace, value)
else:
self._handle_one(namespace, values)
def _handle_one(self, namespace, value):
try:
intval = int(value)
if namespace.infile.name != '/proc/self/mountstats':
raise argparse.ArgumentError(self, "not allowed with argument -f/--file or -S/--since")
self._handle_int(namespace, intval)
except ValueError:
namespace.mountpoints.append(value)
def _handle_int(self, namespace, value):
if namespace.interval is None:
namespace.interval = value
elif namespace.count is None:
namespace.count = value
else:
raise argparse.ArgumentError(self, "too many integer arguments")
def main():
parser = argparse.ArgumentParser(epilog='For specific sub-command help, '
'run \'mountstats SUB-COMMAND -h|--help\'')
subparsers = parser.add_subparsers(help='sub-command help')
common_parser = argparse.ArgumentParser(add_help=False)
common_parser.add_argument('-v', '--version', action='version',
version='mountstats ' + Mountstats_version)
common_parser.add_argument('-f', '--file', default=open('/proc/self/mountstats', 'r'),
type=argparse.FileType('r'), dest='infile',
help='Read stats from %(dest)s instead of /proc/self/mountstats')
common_parser.add_argument('-S', '--since', type=argparse.FileType('r'),
metavar='SINCEFILE',
help='Show difference between current stats and those in SINCEFILE')
mountstats_parser = subparsers.add_parser('mountstats',
parents=[common_parser],
help='Display a combination of per-op RPC statistics, NFS event counts, and NFS byte counts. '
'This is the default sub-command if no sub-command is given.')
group = mountstats_parser.add_mutually_exclusive_group()
group.add_argument('-n', '--nfs', action='store_true', dest='nfs_only',
help='Display only the NFS statistics')
group.add_argument('-r', '--rpc', action='store_true', dest='rpc_only',
help='Display only the RPC statistics')
group.add_argument('-R', '--raw', action='store_true',
help='Display only the raw statistics')
# The mountpoints argument cannot be moved into the common_parser because
# it will screw up the parsing of the iostat arguments (interval and count)
mountstats_parser.add_argument('mountpoints', nargs='*', metavar='mountpoint',
help='Display statistics for this mountpoint. More than one may be specified. '
'If absent, statistics for all NFS mountpoints will be generated.')
mountstats_parser.set_defaults(func=mountstats_command)
nfsstat_parser = subparsers.add_parser('nfsstat',
parents=[common_parser],
help='Display nfsstat-like statistics.')
nfsstat_parser.add_argument('-3', action='store_true', dest='show_v3',
help='Show NFS version 3 statistics')
nfsstat_parser.add_argument('-4', action='store_true', dest='show_v4',
help='Show NFS version 4 statistics')
# The mountpoints argument cannot be moved into the common_parser because
# it will screw up the parsing of the iostat arguments (interval and count)
nfsstat_parser.add_argument('mountpoints', nargs='*', metavar='mountpoint',
help='Display statistics for this mountpoint. More than one may be specified. '
'If absent, statistics for all NFS mountpoints will be generated.')
nfsstat_parser.set_defaults(func=nfsstat_command)
iostat_parser = subparsers.add_parser('iostat',
parents=[common_parser],
help='Display iostat-like statistics.')
iostat_parser.add_argument('interval', nargs='?', action=ICMAction,
help='Number of seconds between reports. If absent, only one report will '
'be generated.')
iostat_parser.add_argument('count', nargs='?', action=ICMAction,
help='Number of reports generated at <interval> seconds apart. If absent, '
'reports will be generated continuously.')
# The mountpoints argument cannot be moved into the common_parser because
# it will screw up the parsing of the iostat arguments (interval and count)
iostat_parser.add_argument('mountpoints', nargs='*', action=ICMAction, metavar='mountpoint',
help='Display statsistics for this mountpoint. More than one may be specified. '
'If absent, statistics for all NFS mountpoints will be generated.')
iostat_parser.set_defaults(func=iostat_command)
args = parser.parse_args()
return args.func(args)
try:
if __name__ == '__main__':
# Run the mounstats sub-command if no sub-command (or the help flag)
# is given. If the argparse module ever gets support for optional
# (default) sub-commands, then this can be changed.
if len(sys.argv) == 1:
sys.argv.insert(1, 'mountstats')
elif sys.argv[1] not in ['-h', '--help', 'mountstats', 'iostat', 'nfsstat']:
sys.argv.insert(1, 'mountstats')
res = main()
sys.stdout.close()
sys.stderr.close()
sys.exit(res)
except (KeyboardInterrupt, RuntimeError):
sys.exit(1)
except IOError:
pass