@@ -514,6 +514,9 @@ standalone database from the contents of a running clustered database.
When the cluster is down and cannot be revived, ``ovsdb-client backup`` will
not work.
+Use ``ovsdb-tool cluster-to-standalone`` to convert clustered database to
+standalone database when the cluster is down and cannot be revived.
+
Upgrading or Downgrading a Database
-----------------------------------
@@ -173,6 +173,9 @@ usage(void)
" compare-versions A OP B compare OVSDB schema version numbers\n"
" query [DB] TRNS execute read-only transaction on DB\n"
" transact [DB] TRNS execute read/write transaction on DB\n"
+ " cluster-to-standalone [DB [DB]] Convert clustered DB to\n"
+ "standalone DB when cluster is down and cannot be\n"
+ "revived\n"
" [-m]... show-log [DB] print DB's log entries\n"
"The default DB is %s.\n"
"The default SCHEMA is %s.\n",
@@ -942,6 +945,64 @@ print_raft_record(const struct raft_record *r,
}
}
+static void
+write_raft_header_to_file(const struct json *data,
+ struct ovsdb_log *db_log_data)
+{
+ if (!data || json_array(data)->n != 2) {
+ ovs_fatal(0, "***Invalid data***\n");
+ }
+
+ struct json *schema_json = json_array(data)->elems[0];
+ if (schema_json->type != JSON_NULL) {
+ struct ovsdb_schema *schema;
+ check_ovsdb_error(ovsdb_schema_from_json(schema_json, &schema));
+ ovsdb_schema_destroy(schema);
+ check_ovsdb_error(ovsdb_log_write_and_free(db_log_data, schema_json));
+ }
+
+ struct json *data_json = json_array(data)->elems[1];
+ if (!data_json || data_json->type != JSON_OBJECT) {
+ ovs_fatal(0, "***invalid data***\n");
+ }
+ if (data_json->type != JSON_NULL) {
+ check_ovsdb_error(ovsdb_log_write_and_free(db_log_data, data_json));
+ }
+}
+
+static void
+write_raft_header(const struct raft_header *h, struct ovsdb_log *db_log_data)
+{
+ if (h->snap_index) {
+ write_raft_header_to_file(h->snap.data, db_log_data);
+ }
+}
+
+static void
+write_raft_record_to_file(const struct json *data,
+ struct ovsdb_log *db_log_data)
+{
+ if (json_array(data)->n != 2) {
+ ovs_fatal(0, "***invalid data***\n");
+ }
+
+ struct json *data_json = json_array(data)->elems[1];
+ if (data_json->type != JSON_NULL) {
+ check_ovsdb_error(ovsdb_log_write_and_free(db_log_data, data_json));
+ }
+}
+
+static void
+write_raft_record(const struct raft_record *r, struct ovsdb_log *db_log_data)
+{
+ if (r->type == RAFT_REC_ENTRY) {
+ if (!r->entry.data) {
+ return;
+ }
+ write_raft_record_to_file(r->entry.data, db_log_data);
+ }
+}
+
static void
do_show_log_cluster(struct ovsdb_log *log)
{
@@ -1511,6 +1572,51 @@ do_compare_versions(struct ovs_cmdl_context *ctx)
exit(result ? 0 : 2);
}
+static void
+do_convert_to_standalone(struct ovsdb_log *log, struct ovsdb_log *db_log_data)
+{
+ for (unsigned int i = 0; ; i++) {
+ struct json *json;
+ check_ovsdb_error(ovsdb_log_read(log, &json));
+ if (!json) {
+ break;
+ }
+
+ if (i == 0) {
+ struct raft_header h;
+ check_ovsdb_error(raft_header_from_json(&h, json));
+ write_raft_header(&h, db_log_data);
+ raft_header_uninit(&h);
+ } else {
+ struct raft_record r;
+ check_ovsdb_error(raft_record_from_json(&r, json));
+ write_raft_record(&r, db_log_data);
+ raft_record_uninit(&r);
+ }
+ }
+}
+
+static void
+do_cluster_standalone(struct ovs_cmdl_context *ctx)
+{
+ const char *db_file_name = ctx->argv[1];
+ const char *cluster_db_file_name = ctx->argv[2];
+ struct ovsdb_log *log;
+ struct ovsdb_log *db_log_data;
+
+ check_ovsdb_error(ovsdb_log_open(cluster_db_file_name,
+ OVSDB_MAGIC"|"RAFT_MAGIC,
+ OVSDB_LOG_READ_ONLY, -1, &log));
+ check_ovsdb_error(ovsdb_log_open(db_file_name, OVSDB_MAGIC,
+ OVSDB_LOG_CREATE_EXCL, -1, &db_log_data));
+ if (strcmp(ovsdb_log_get_magic(log), RAFT_MAGIC) != 0) {
+ ovs_fatal(0, "Database is not clustered db.\n");
+ }
+ do_convert_to_standalone(log, db_log_data);
+ check_ovsdb_error(ovsdb_log_commit_block(db_log_data));
+ ovsdb_log_close(db_log_data);
+ ovsdb_log_close(log);
+}
static void
do_help(struct ovs_cmdl_context *ctx OVS_UNUSED)
@@ -1550,7 +1656,9 @@ static const struct ovs_cmdl_command all_commands[] = {
{ "compare-versions", "a op b", 3, 3, do_compare_versions, OVS_RO },
{ "help", NULL, 0, INT_MAX, do_help, OVS_RO },
{ "list-commands", NULL, 0, INT_MAX, do_list_commands, OVS_RO },
- { NULL, NULL, 0, 0, NULL, OVS_RO },
+ { "cluster-to-standalone", "[db [clusterdb]]", 2, 2,
+ do_cluster_standalone, OVS_RW },
+ { NULL, NULL, 2, 2, NULL, OVS_RO },
};
static const struct ovs_cmdl_command *get_all_commands(void)