#!/bin/python """ Copyright (c) 2006-2012 Red Hat, Inc. 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 """ 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 """ 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 """ 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)