From 80c4b1e43e67249996cea61cc761911ff9fecbde Mon Sep 17 00:00:00 2001 From: Andrew Tridgell Date: Tue, 15 Sep 2009 14:06:07 -0700 Subject: s4-repl: don't do double replication When we replicate from a remote DC, we need to note the new uSN that the local changes have resulted in, and modify the uSN that the notify task uses to determine if it should send a ReplicaSync message back to the remote DC. Otherwise we end up always triggering a ReplicaSync every time we replicate from another DC --- source4/dsdb/repl/replicated_objects.c | 35 +++++++++++++++++++++++++++++++++- 1 file changed, 34 insertions(+), 1 deletion(-) (limited to 'source4/dsdb/repl/replicated_objects.c') diff --git a/source4/dsdb/repl/replicated_objects.c b/source4/dsdb/repl/replicated_objects.c index 2f4efc0fee..5ae622eeaa 100644 --- a/source4/dsdb/repl/replicated_objects.c +++ b/source4/dsdb/repl/replicated_objects.c @@ -212,7 +212,8 @@ WERROR dsdb_extended_replicated_objects_commit(struct ldb_context *ldb, const struct drsuapi_DsReplicaCursor2CtrEx *uptodateness_vector, const DATA_BLOB *gensec_skey, TALLOC_CTX *mem_ctx, - struct dsdb_extended_replicated_objects **_out) + struct dsdb_extended_replicated_objects **_out, + uint64_t *notify_uSN) { WERROR status; const struct dsdb_schema *schema; @@ -221,6 +222,7 @@ WERROR dsdb_extended_replicated_objects_commit(struct ldb_context *ldb, const struct drsuapi_DsReplicaObjectListItemEx *cur; uint32_t i; int ret; + uint64_t seq_num1, seq_num2; schema = dsdb_get_schema(ldb); if (!schema) { @@ -280,6 +282,14 @@ WERROR dsdb_extended_replicated_objects_commit(struct ldb_context *ldb, return WERR_FOOBAR; } + ret = dsdb_load_partition_usn(ldb, out->partition_dn, &seq_num1); + if (ret != LDB_SUCCESS) { + DEBUG(0,(__location__ " Failed to load partition uSN\n")); + talloc_free(out); + ldb_transaction_cancel(ldb); + return WERR_FOOBAR; + } + ret = ldb_extended(ldb, DSDB_EXTENDED_REPLICATED_OBJECTS_OID, out, &ext_res); if (ret != LDB_SUCCESS) { DEBUG(0,("Failed to apply records: %s: %s\n", @@ -290,6 +300,28 @@ WERROR dsdb_extended_replicated_objects_commit(struct ldb_context *ldb, } talloc_free(ext_res); + ret = ldb_transaction_prepare_commit(ldb); + if (ret != LDB_SUCCESS) { + DEBUG(0,(__location__ " Failed to prepare commit of transaction\n")); + talloc_free(out); + return WERR_FOOBAR; + } + + ret = dsdb_load_partition_usn(ldb, out->partition_dn, &seq_num2); + if (ret != LDB_SUCCESS) { + DEBUG(0,(__location__ " Failed to load partition uSN\n")); + talloc_free(out); + ldb_transaction_cancel(ldb); + return WERR_FOOBAR; + } + + /* if this replication partner didn't need to be notified + before this transaction then it still doesn't need to be + notified, as the changes came from this server */ + if (seq_num2 > seq_num1 && seq_num1 <= *notify_uSN) { + *notify_uSN = seq_num2; + } + ret = ldb_transaction_commit(ldb); if (ret != LDB_SUCCESS) { DEBUG(0,(__location__ " Failed to commit transaction\n")); @@ -297,6 +329,7 @@ WERROR dsdb_extended_replicated_objects_commit(struct ldb_context *ldb, return WERR_FOOBAR; } + DEBUG(2,("Replicated %u objects (%u linked attributes) for %s\n", out->num_objects, out->linked_attributes_count, ldb_dn_get_linearized(out->partition_dn))); -- cgit