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Make pg_basebackup work with pre-9.3 servers, and add server version check.

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A new 'starttli' field was added to the response of BASE_BACKUP command.
Make pg_basebackup tolerate the case that it's missing, so that it still
works with older servers.

Add an explicit check for the server version, so that you get a nicer error
message if you try to use it with a pre-9.1 server.

The streaming protocol message format changed in 9.3, so -X stream still won't
work with pre-9.3 servers. I added a version check to ReceiveXLogStream()
earlier, but write that slightly differently, so that in 9.4, it will still
work with a 9.3 server. (In 9.4, the error message needs to be adjusted to
"9.3 or above", though). Also, if the version check fails, don't retry.
This commit is contained in:
Heikki Linnakangas
2013-03-22 13:02:59 +02:00
parent ea988ee8c8
commit d298b50a3b
5 changed files with 93 additions and 14 deletions
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6
doc/src/sgml/ref/pg_basebackup.sgml
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@ -520,6 +520,12 @@ PostgreSQL documentation
for all additional tablespaces must be identical whenever a backup is
restored. The main data directory, however, is relocatable to any location.
</para>
<para>
<application>pg_basebackup</application> works with servers of the same
or an older major version, down to 9.1. However, WAL streaming mode (-X
stream) only works with server version 9.3.
</para>
</refsect1>
<refsect1>