From 8a17cd810fa6cbe7b11139ff0f6f24e7bacd318b Mon Sep 17 00:00:00 2001
From: Volker Lendecke <vl@samba.org>
Date: Mon, 13 Jul 2009 17:04:29 +0200
Subject: Make gencache more stable

This provides a compromise between stability and performance: gencache is a
persistent database these days that for performance reasons can not use tdb
transactions for all writes. This patch splits up gencache into gencache.tdb
and gencache_notrans.tdb. gencache_notrans is used with CLEAR_IF_FIRST, writes
to it don't use transactions. By default every 5 minutes and when a program
exits, all entries from _notrans.tdb are transferred to gencache.tdb in one
transaction.
---
 source3/utils/net.c       |  2 ++
 source3/utils/net_cache.c | 23 +++++++++++++++++++++++
 2 files changed, 25 insertions(+)

(limited to 'source3/utils')

diff --git a/source3/utils/net.c b/source3/utils/net.c
index 0e3946f5a5..9f29ac42fe 100644
--- a/source3/utils/net.c
+++ b/source3/utils/net.c
@@ -762,6 +762,8 @@ static struct functable net_func[] = {
 
 	DEBUG(2,("return code = %d\n", rc));
 
+	gencache_stabilize();
+
 	libnetapi_free(c->netapi_ctx);
 
 	poptFreeContext(pc);
diff --git a/source3/utils/net_cache.c b/source3/utils/net_cache.c
index 74d8d29b4b..36cd12fb82 100644
--- a/source3/utils/net_cache.c
+++ b/source3/utils/net_cache.c
@@ -297,6 +297,21 @@ static int net_cache_flush(struct net_context *c, int argc, const char **argv)
 	return 0;
 }
 
+static int net_cache_stabilize(struct net_context *c, int argc,
+			       const char **argv)
+{
+	if (c->display_usage) {
+		d_printf("Usage:\n"
+			 "net cache flush\n"
+			 "    Delete all cache entries.\n");
+		return 0;
+	}
+
+	if (!gencache_stabilize()) {
+		return -1;
+	}
+	return 0;
+}
 /**
  * Entry point to 'net cache' subfunctionality
  *
@@ -362,6 +377,14 @@ int net_cache(struct net_context *c, int argc, const char **argv)
 			"net cache flush\n"
 			"  Delete all cache entries"
 		},
+		{
+			"stabilize",
+			net_cache_stabilize,
+			NET_TRANSPORT_LOCAL,
+			"Move transient cache content to stable storage",
+			"net cache stabilize\n"
+			"  Move transient cache content to stable storage"
+		},
 		{NULL, NULL, 0, NULL, NULL}
 	};
 
-- 
cgit