1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
|
#!/bin/python
"""
Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com>
This file is part of GlusterFS.
This file is licensed to you under your choice of the GNU Lesser
General Public License, version 3 or any later version (LGPLv3 or
later), or the GNU General Public License, version 2 (GPLv2), in all
cases as published by the Free Software Foundation.
"""
import os
import string
import sys
class NFSRequest:
def requestIsEntryOp (self):
op = self.op
if op == "CREATE" or op == "LOOKUP" or op == "REMOVE" or op == "LINK" or op == "RENAME" or op == "MKDIR" or op == "RMDIR" or op == "SYMLINK" or op == "MKNOD":
return 1
else:
return 0
def __init__ (self, logline, linecount):
self.calllinecount = 0
self.xid = ""
self.op = ""
self.opdata = ""
self.replydata = ""
self.replylinecount = 0
self.timestamp = ""
self.entryname = ""
self.gfid = ""
self.replygfid = ""
tokens = logline.strip ().split (" ")
self.timestamp = tokens[0] + " " + tokens[1]
if "XID:" not in tokens:
return None
if "args:" not in tokens:
return None
self.calllinecount = linecount
xididx = tokens.index ("XID:")
self.xid = tokens [xididx+1].strip(",")
opidx = tokens.index ("args:")
self.op = tokens [opidx-1].strip (":")
self.opdata = " ".join(tokens [opidx+1:])
if self.requestIsEntryOp ():
nameidx = tokens.index ("name:")
self.entryname = tokens[nameidx + 1].strip (",")
gfididx = tokens.index ("gfid")
self.gfid = tokens[gfididx +1].strip(",")
def getXID (self):
return self.xid
def setReply (self, logline, linecount):
tokens = logline.strip ().split (" ")
timestamp = tokens[0] + " " + tokens[1]
statidx = tokens.index ("NFS:")
self.replydata = " TimeStamp: " + timestamp + " " + " ".join (tokens [statidx+1:])
self.replylinecount = linecount
if "gfid" in tokens:
gfididx = tokens.index ("gfid")
self.replygfid = tokens [gfididx + 1].strip(",")
def dump (self):
print "ReqLine: " + str(self.calllinecount) + " TimeStamp: " + self.timestamp + ", XID: " + self.xid + " " + self.op + " ARGS: " + self.opdata + " RepLine: " + str(self.replylinecount) + " " + self.replydata
class NFSLogAnalyzer:
def __init__ (self, optn, trackfilename, tracknamefh, stats):
self.stats = stats
self.xid_request_map = {}
self.orphan_replies = {}
self.rqlist = []
self.CALL = 1
self.REPLY = 2
self.optn = optn
self.trackfilename = trackfilename
self.tracknamefh = tracknamefh
self.trackedfilehandles = []
def handle_call_line (self, logline, linecount):
newreq = NFSRequest (logline, linecount)
xid = newreq.getXID ()
if (self.optn == SYNTHESIZE):
self.xid_request_map [xid] = newreq
self.rqlist.append(newreq)
elif self.optn == TRACKFILENAME:
if newreq.requestIsEntryOp():
if newreq.entryname == self.trackfilename:
self.xid_request_map [xid] = newreq
self.rqlist.append(newreq)
else:
del newreq
elif self.tracknamefh == ENABLE_TRACKNAME_FH:
if len (self.trackedfilehandles) > 0:
if newreq.gfid in self.trackedfilehandles:
self.xid_request_map [xid] = newreq
self.rqlist.append(newreq)
else:
del newreq
else:
del newreq
else:
del newreq
def handle_reply_line (self, logline, linecount):
tokens = logline.strip ().split (" ")
xididx = tokens.index ("XID:")
xid = tokens [xididx + 1].strip(",")
if xid not in self.xid_request_map.keys ():
self.orphan_replies [xid] = logline
else:
rq = self.xid_request_map [xid]
rq.setReply (logline, linecount)
if rq.requestIsEntryOp() and rq.entryname == self.trackfilename:
self.trackedfilehandles.append (rq.replygfid)
def analyzeLine (self, logline, linecount):
tokens = logline.strip ().split (" ")
msgtype = 0
if "XID:" not in tokens:
return
if "args:" in tokens:
msgtype = self.CALL
elif "NFS:" in tokens:
msgtype = self.REPLY
if msgtype == self.CALL:
self.handle_call_line (logline, linecount)
elif msgtype == self.REPLY:
self.handle_reply_line (logline, linecount)
def getStats (self):
if self.stats == 0:
return
rcount = len (self.xid_request_map.keys ())
orphancount = len (self.orphan_replies.keys ())
print "Requests: " + str(rcount) + ", Orphans: " + str(orphancount)
def dump (self):
self.getStats ()
for rq in self.rqlist:
rq.dump ()
del rq
self.rqlist = []
self.orphan_replies = {}
self.xid_request_map = {}
linecount = 0
SYNTHESIZE = 1
TRACKFILENAME = 2
ENABLESTATS = 1
DISABLESTATS = 0
ENABLE_TRACKNAME_FH = 1
DISABLE_TRACKNAME_FH = 0
progmsgcount = 1000
dumpinterval = 200000
operation = SYNTHESIZE
stats = ENABLESTATS
tracknamefh = DISABLE_TRACKNAME_FH
trackfilename = ""
"""
Print the progress of the analysing operations every X number of lines read from
the logs, where X is the argument provided to this option.
Use this to print a status message every say 10000 lines processed or 100000
lines processed to know how much longer the processing will go on for.
USAGE: --progress <NUMLINES>
"""
if "--progress" in sys.argv:
idx = sys.argv.index ("--progress")
progmsgcount = int(sys.argv[idx+1])
"""
The replies for a NFS request can be separated by hundreds and even thousands
of other NFS requests and replies. These can be spread over many hundreds and
thousands of log lines. This script maintains a memory dict to map each request
to its reply using the XID. Because this is in-core, there is a limit to the
number of entries in the dict. At regular intervals, it dumps the mapped
requests and the replies into the stdout. The requests whose replies were not
found at the point of dumping are left as orphans, i.e. without info about the
replies. Use this option to tune the number of lines to maximize the number of
requests whose replies are found while balancing the dict size with memory
on the machine. The default works fine for most cases.
USAGE: --dump <NUMLINES>
"""
if "--dump" in sys.argv:
idx = sys.argv.index ("--dump")
dumpinterval = int(sys.argv[idx+1])
"""
The default operation of the script is to output all the requests mapped to
their replies in a single line. This operation mode can be changed by this
argument. It is used to print only those operations that were performed on the
filename given as the argument to this option. Only those entry operations are
printed which contain this filename.
USAGE: --trackfilename <filename>
"""
if "--trackfilename" in sys.argv:
idx = sys.argv.index ("--trackfilename")
trackfilename = sys.argv[idx + 1]
operation = TRACKFILENAME
"""
At every dump interval, some stats are printed about the dumped lines.
Use this option to disable printing that to avoid cluttering the
output.
"""
if "--nostats" in sys.argv:
stats = DISABLESTATS
"""
While tracking a file using --trackfilename, we're only given those
operations which contain the filename. This excludes a large number
of operations which operate on that file using its filehandle instead of
the filename. This option enables outputting those operations also. It
tracks every single file handle that was ever seen in the log for a given
filename.
USAGE: --trackfilename
"""
if "--tracknamefh" in sys.argv:
tracknamefh = ENABLE_TRACKNAME_FH
la = NFSLogAnalyzer (operation, trackfilename, tracknamefh, stats)
for line in sys.stdin:
linecount = linecount + 1
if linecount % dumpinterval == 0:
sys.stderr.write ("Dumping data..\n")
la.dump ()
if linecount % progmsgcount == 0:
sys.stderr.write ("Integrating line: "+ str(linecount) + "\n")
la.analyzeLine (line, linecount)
|
