From: Sage Weil <sage@newdream.net>
Date: Fri, 14 Oct 2011 20:30:43 +0000 (-0700)
Subject: mon: make number of old paxos states configurable
X-Git-Tag: v0.38~63^2~21
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=818cf8c887f55658191cf7a70fccfe117773cc4d;p=ceph.git

mon: make number of old paxos states configurable

Currently settable on osdmaps, pgmaps, and log.  Still need MDSMap and
authmap trimming.

Signed-off-by: Sage Weil <sage@newdream.net>
---

diff --git a/src/common/config_opts.h b/src/common/config_opts.h
index f9b61d3e50f9..700a6ed8a778 100644
--- a/src/common/config_opts.h
+++ b/src/common/config_opts.h
@@ -95,6 +95,9 @@ OPTION(mon_osd_nearfull_ratio, OPT_INT, 85) // what % full makes an OSD near ful
 OPTION(mon_globalid_prealloc, OPT_INT, 100)   // how many globalids to prealloc
 OPTION(mon_osd_report_timeout, OPT_INT, 900)    // grace period before declaring unresponsive OSDs dead
 OPTION(mon_force_standby_active, OPT_BOOL, true) // should mons force standby-replay mds to be active
+OPTION(mon_min_osdmap_epochs, OPT_INT, 500)
+OPTION(mon_max_pgmap_epochs, OPT_INT, 500)
+OPTION(mon_max_log_epochs, OPT_INT, 500)
 OPTION(paxos_propose_interval, OPT_DOUBLE, 1.0)  // gather updates for this long before proposing a map update
 OPTION(paxos_min_wait, OPT_DOUBLE, 0.05)  // min time to gather updates for after period of inactivity
 OPTION(paxos_observer_timeout, OPT_DOUBLE, 5*60) // gather updates for this long before proposing a map update
diff --git a/src/mon/LogMonitor.cc b/src/mon/LogMonitor.cc
index b609a0588495..2c8db1fa882f 100644
--- a/src/mon/LogMonitor.cc
+++ b/src/mon/LogMonitor.cc
@@ -171,7 +171,7 @@ bool LogMonitor::update_from_paxos()
 
 
   // trim
-  unsigned max = 500;
+  unsigned max = g_conf->mon_max_log_epochs;
   if (mon->is_leader() && paxosv > max)
     paxos->trim_to(paxosv - max);
 
diff --git a/src/mon/OSDMonitor.cc b/src/mon/OSDMonitor.cc
index 682d57d8982a..adc0cd1268da 100644
--- a/src/mon/OSDMonitor.cc
+++ b/src/mon/OSDMonitor.cc
@@ -1131,7 +1131,7 @@ void OSDMonitor::tick()
       mon->pgmon()->pg_map.creating_pgs.empty()) {
     epoch_t floor = mon->pgmon()->pg_map.calc_min_last_epoch_clean();
     dout(10) << " min_last_epoch_clean " << floor << dendl;
-    unsigned min = 100;
+    unsigned min = g_conf->mon_min_osdmap_epochs;
     if (floor + min < paxos->get_version())
       paxos->trim_to(floor);
   }    
diff --git a/src/mon/PGMonitor.cc b/src/mon/PGMonitor.cc
index 08eaabd4e9fe..909aa6b348a9 100644
--- a/src/mon/PGMonitor.cc
+++ b/src/mon/PGMonitor.cc
@@ -180,7 +180,7 @@ bool PGMonitor::update_from_paxos()
     mon->store->put_bl_sn(d, "pgmap_dump", paxosv);
   }
 
-  unsigned max = 500;
+  unsigned max = g_conf->mon_max_pgmap_epochs;
   if (mon->is_leader() &&
       paxosv > max)
     paxos->trim_to(paxosv - max);