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In pg_upgrade, check that the binary and data directories are the same

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major version.

Backpatch to 9.1.

Dan McGee
This commit is contained in:
Bruce Momjian 2011-06-22 20:48:34 -04:00
parent 3b3c2cf180
commit 0b44818ead
2 changed files with 50 additions and 1 deletions
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50
contrib/pg_upgrade/check.c
View File

@ -20,6 +20,7 @@ static void check_for_prepared_transactions(ClusterInfo *cluster);
static void check_for_isn_and_int8_passing_mismatch(ClusterInfo *cluster);
static void check_for_reg_data_type_usage(ClusterInfo *cluster);
static void check_for_support_lib(ClusterInfo *cluster);
static void get_bin_version(ClusterInfo *cluster);
void
@ -216,6 +217,8 @@ output_completion_banner(char *deletion_script_file_name)
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);
@ -235,10 +238,26 @@ check_cluster_versions(void)
/*
* We can't allow downgrading because we use the target pg_dumpall, and
* pg_dumpall cannot operate on new datbase versions, only older versions.
* 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();
}
@ -754,3 +773,32 @@ check_for_support_lib(ClusterInfo *cluster)
fclose(lib_test);
}
static void
get_bin_version(ClusterInfo *cluster)
{
char cmd[MAXPGPATH], cmd_output[MAX_STRING];
FILE *output;
int pre_dot, post_dot;
snprintf(cmd, sizeof(cmd), "\"%s/pg_ctl\" --version", cluster->bindir);
if ((output = popen(cmd, "r")) == NULL)
pg_log(PG_FATAL, "Could not get pg_ctl version data: %s\n",
getErrorText(errno));
fgets(cmd_output, sizeof(cmd_output), output);
pclose(output);
/* Remove trailing newline */
if (strchr(cmd_output, '\n') != NULL)
*strchr(cmd_output, '\n') = '\0';
if (sscanf(cmd_output, "%*s %*s %d.%d", &pre_dot, &post_dot) != 2)
pg_log(PG_FATAL, "could not get version from %s\n", cmd);
cluster->bin_version = (pre_dot * 100 + post_dot) * 100;
}

1
contrib/pg_upgrade/pg_upgrade.h
View File

@ -184,6 +184,7 @@ typedef struct
unsigned short port; /* port number where postmaster is waiting */
uint32 major_version; /* PG_VERSION of cluster */
char major_version_str[64]; /* string PG_VERSION of cluster */
uint32 bin_version; /* version returned from pg_ctl */
Oid pg_database_oid; /* OID of pg_database relation */
char *tablespace_suffix; /* directory specification */
} ClusterInfo;