diff options
Diffstat (limited to 'geo-replication/syncdaemon/master.py')
| -rw-r--r-- | geo-replication/syncdaemon/master.py | 73 |
1 files changed, 34 insertions, 39 deletions
diff --git a/geo-replication/syncdaemon/master.py b/geo-replication/syncdaemon/master.py index e3904736ba2..79c90630dca 100644 --- a/geo-replication/syncdaemon/master.py +++ b/geo-replication/syncdaemon/master.py @@ -168,10 +168,10 @@ class NormalMixin(object): raise GsyncdError("timestamp corruption for " + path) def need_sync(self, e, xte, xtrd): - if self.xsync_upper_limit is None: - return xte > xtrd + if self.xsync_upper_limit: + return xte > xtrd and xte <= self.xsync_upper_limit else: - return xte > xtrd and xte < self.xsync_upper_limit + return xte > xtrd def set_slave_xtime(self, path, mark): self.slave.server.set_stime(path, self.uuid, mark) @@ -442,13 +442,24 @@ class GMasterCommon(object): def register(self): self.register() - def crawlwrap(self, oneshot=False, no_stime_update=False): + def crawlwrap(self, oneshot=False, no_stime_update=False, + register_time=None): if oneshot: # it's important to do this during the oneshot crawl as # for a passive gsyncd (ie. in a replicate scenario) # the keepalive thread would keep the connection alive. self.init_keep_alive() + # If crawlwrap is called when partial history available, + # then it sets register_time which is the time when geo-rep + # worker registerd to changelog consumption. Since nsec is + # not considered in register time, their are chances of skipping + # changes detection in xsync crawl. Add 1 sec to upper_limit. + # This limit will be reset when crawlwrap is called again. + self.xsync_upper_limit = None + if register_time: + self.xsync_upper_limit = (register_time + 1, 0) + # no need to maintain volinfo state machine. # in a cascading setup, each geo-replication session is # independent (ie. 'volume-mark' and 'xtime' are not @@ -757,6 +768,12 @@ class GMasterChangelogMixin(GMasterCommon): logging.debug('changelog working dir %s' % workdir) return workdir + def get_purge_time(self): + purge_time = self.xtime('.', self.slave) + if isinstance(purge_time, int): + purge_time = None + return purge_time + def process_change(self, change, done, retry): pfx = gauxpfx() clist = [] @@ -1135,9 +1152,7 @@ class GMasterChangelogMixin(GMasterCommon): changes = [] # get stime (from the brick) and purge changelogs # that are _historical_ to that time. - purge_time = self.xtime('.', self.slave) - if isinstance(purge_time, int): - purge_time = None + purge_time = self.get_purge_time() self.changelog_agent.scan() self.crawls += 1 @@ -1175,14 +1190,10 @@ class GMasterChangeloghistoryMixin(GMasterChangelogMixin): def crawl(self, no_stime_update=False): self.history_turns += 1 self.update_worker_crawl_status("History Crawl") - logging.info('starting history crawl... turns: %s' % - self.history_turns) + purge_time = self.get_purge_time() - # get stime (from the brick) and purge changelogs - # that are _historical_ to that time. - purge_time = self.xtime('.', self.slave) - if isinstance(purge_time, int): - purge_time = None + logging.info('starting history crawl... turns: %s, stime: %s' + % (self.history_turns, repr(purge_time))) if not purge_time or purge_time == URXTIME: logging.info("stime not available, abandoning history crawl") @@ -1226,8 +1237,8 @@ class GMasterChangeloghistoryMixin(GMasterChangelogMixin): history_turn_time = int(time.time()) - self.history_crawl_start_time - logging.info('finished history crawl syncing between %s - %s.' % - (purge_time[0], actual_end)) + logging.info('finished history crawl syncing, endtime: %s, stime: %s' + % (actual_end, repr(self.get_purge_time()))) # If TS returned from history_changelog is < register_time # then FS crawl may be required, since history is only available @@ -1260,7 +1271,7 @@ class GMasterXsyncMixin(GMasterChangelogMixin): XSYNC_MAX_ENTRIES = 1 << 13 - def register(self, register_time, changelog_agent=None): + def register(self, register_time=None, changelog_agent=None): self.counter = 0 self.comlist = [] self.stimes = [] @@ -1277,17 +1288,6 @@ class GMasterXsyncMixin(GMasterChangelogMixin): else: raise - # After changelogs history processing completes, it switches - # to xsync/hibrid crawl if history actual end time is less than - # live changelog register time. Xsync should only run for that - # small gap, ie.. changelog_register_time - history_actual_end_time - # If we don't have upper limit to limit the XSync change detection - # It will keep on detecting the files even though changelogs are - # available for the same. Set upper limit during register - # and reset at the end of each crawl. Reseting at the end of - # crawl is required if change_detector is set to xsync. - self.xsync_upper_limit = (register_time, 0) - def crawl(self, no_stime_update=False): """ event dispatcher thread @@ -1299,18 +1299,15 @@ class GMasterXsyncMixin(GMasterChangelogMixin): self.Xcrawl() t = Thread(target=Xsyncer) t.start() - logging.info('starting hybrid crawl...') + logging.info('starting hybrid crawl..., stime: %s' + % repr(self.get_purge_time())) self.update_worker_crawl_status("Hybrid Crawl") while True: try: item = self.comlist.pop(0) if item[0] == 'finale': - if self.xsync_upper_limit is not None: - logging.info('finished hybrid crawl syncing, endtime: ' - '%s' % self.xsync_upper_limit[0]) - else: - logging.info('finished hybrid crawl syncing') - + logging.info('finished hybrid crawl syncing, stime: %s' + % repr(self.get_purge_time())) break elif item[0] == 'xsync': logging.info('processing xsync changelog %s' % (item[1])) @@ -1333,8 +1330,6 @@ class GMasterXsyncMixin(GMasterChangelogMixin): except IndexError: time.sleep(1) - self.xsync_upper_limit = None - def write_entry_change(self, prefix, data=[]): self.fh.write("%s %s\n" % (prefix, ' '.join(data))) @@ -1460,7 +1455,7 @@ class GMasterXsyncMixin(GMasterChangelogMixin): str(st.st_gid), str(st.st_mode)]) self.Xcrawl(e, xtr_root) stime_to_update = xte - if self.xsync_upper_limit is not None: + if self.xsync_upper_limit: stime_to_update = min(self.xsync_upper_limit, xte) self.stimes.append((e, stime_to_update)) elif stat.S_ISLNK(mo): @@ -1487,7 +1482,7 @@ class GMasterXsyncMixin(GMasterChangelogMixin): self.write_entry_change("D", [gfid]) if path == '.': stime_to_update = xtl - if self.xsync_upper_limit is not None: + if self.xsync_upper_limit: stime_to_update = min(self.xsync_upper_limit, xtl) self.stimes.append((path, stime_to_update)) self.sync_done(self.stimes, True) |