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| author | Heikki Linnakangas <heikki.linnakangas@iki.fi> | 2013-01-15 15:45:52 +0200 |
|---|---|---|
| committer | Heikki Linnakangas <heikki.linnakangas@iki.fi> | 2013-01-15 15:45:52 +0200 |
| commit | ffda05977a93f9b3f8a6b05657ba2f16decb6b23 (patch) | |
| tree | 61f2a6cb43cc79460ce2943a2c32b177d1d1a77d /src | |
| parent | 1b794d3f3286036eec1d09d5cbea989162657331 (diff) | |
| download | postgresql-ffda05977a93f9b3f8a6b05657ba2f16decb6b23.tar.gz postgresql-ffda05977a93f9b3f8a6b05657ba2f16decb6b23.zip | |
Give a proper error message if connecting to incompatible server.
The WAL streaming message format changed in 9.3, so 9.3 pg_basebackup or
pg_receivelog won't work against older servers.
Diffstat (limited to 'src')
| -rw-r--r-- | src/bin/pg_basebackup/receivelog.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/bin/pg_basebackup/receivelog.c b/src/bin/pg_basebackup/receivelog.c index cf9cea1e2df..88d0c136b07 100644 --- a/src/bin/pg_basebackup/receivelog.c +++ b/src/bin/pg_basebackup/receivelog.c @@ -342,6 +342,21 @@ ReceiveXlogStream(PGconn *conn, XLogRecPtr startpos, uint32 timeline, int64 last_status = -1; XLogRecPtr blockpos = InvalidXLogRecPtr; + /* + * The message format used in streaming replication changed in 9.3, so we + * cannot stream from older servers. Don't know if we would work with + * newer versions, but let's not take the risk. + */ + if (PQserverVersion(conn) / 100 != PG_VERSION_NUM / 100) + { + const char *serverver = PQparameterStatus(conn, "server_version"); + fprintf(stderr, _("%s: incompatible server version %s; streaming is only supported with server version %s\n"), + progname, + serverver ? serverver : "'unknown'", + PG_MAJORVERSION); + return false; + } + if (sysidentifier != NULL) { /* Validate system identifier and timeline hasn't changed */ |