void
check_cluster_versions(void)
{
/* get old and new cluster versions */
old_cluster.major_version = get_major_server_version(&old_cluster);
new_cluster.major_version = get_major_server_version(&new_cluster);
/*
* We allow upgrades from/to the same major version for alpha/beta
* upgrades
*/
if (GET_MAJOR_VERSION(old_cluster.major_version) < 803)
pg_log(PG_FATAL, "This utility can only upgrade from PostgreSQL version 8.3 and later.\n");
/* Only current PG version is supported as a target */
if (GET_MAJOR_VERSION(new_cluster.major_version) != GET_MAJOR_VERSION(PG_VERSION_NUM))
pg_log(PG_FATAL, "This utility can only upgrade to PostgreSQL version %s.\n",
PG_MAJORVERSION);
/*
* We can't allow downgrading because we use the target pg_dumpall, and
* pg_dumpall cannot operate on new datbase versions, only older versions.
*/
if (old_cluster.major_version > new_cluster.major_version)
pg_log(PG_FATAL, "This utility cannot be used to downgrade to older major PostgreSQL versions.\n");
}
void
check_cluster_versions(void)
{
prep_status("Checking cluster versions");
/* get old and new cluster versions */
old_cluster.major_version = get_major_server_version(&old_cluster);
new_cluster.major_version = get_major_server_version(&new_cluster);
/*
* We allow upgrades from/to the same major version for alpha/beta
* upgrades
*/
if (GET_MAJOR_VERSION(old_cluster.major_version) < 803)
pg_log(PG_FATAL, "This utility can only upgrade from PostgreSQL version 8.3 and later.\n");
/* Only current PG version is supported as a target */
if (GET_MAJOR_VERSION(new_cluster.major_version) != GET_MAJOR_VERSION(PG_VERSION_NUM))
pg_log(PG_FATAL, "This utility can only upgrade to PostgreSQL version %s.\n",
PG_MAJORVERSION);
/*
* We can't allow downgrading because we use the target pg_dumpall, and
* pg_dumpall cannot operate on new database versions, only older
* versions.
*/
if (old_cluster.major_version > new_cluster.major_version)
pg_log(PG_FATAL, "This utility cannot be used to downgrade to older major PostgreSQL versions.\n");
/* get old and new binary versions */
get_bin_version(&old_cluster);
get_bin_version(&new_cluster);
/* Ensure binaries match the designated data directories */
if (GET_MAJOR_VERSION(old_cluster.major_version) !=
GET_MAJOR_VERSION(old_cluster.bin_version))
pg_log(PG_FATAL,
"Old cluster data and binary directories are from different major versions.\n");
if (GET_MAJOR_VERSION(new_cluster.major_version) !=
GET_MAJOR_VERSION(new_cluster.bin_version))
pg_log(PG_FATAL,
"New cluster data and binary directories are from different major versions.\n");
check_ok();
}
/*
* check_data_dir()
*
* This function validates the given cluster directory - we search for a
* small set of subdirectories that we expect to find in a valid $PGDATA
* directory. If any of the subdirectories are missing (or secured against
* us) we display an error message and exit()
*
*/
static void
check_data_dir(ClusterInfo *cluster)
{
const char *pg_data = cluster->pgdata;
/* get old and new cluster versions */
old_cluster.major_version = get_major_server_version(&old_cluster);
new_cluster.major_version = get_major_server_version(&new_cluster);
check_single_dir(pg_data, "");
check_single_dir(pg_data, "base");
check_single_dir(pg_data, "global");
check_single_dir(pg_data, "pg_multixact");
check_single_dir(pg_data, "pg_subtrans");
check_single_dir(pg_data, "pg_tblspc");
check_single_dir(pg_data, "pg_twophase");
/* pg_xlog has been renamed to pg_wal in post-10 cluster */
if (GET_MAJOR_VERSION(cluster->major_version) < 1000)
check_single_dir(pg_data, "pg_xlog");
else
check_single_dir(pg_data, "pg_wal");
}
