rdelaage
/
postgresql
mirror of https://git.postgresql.org/git/postgresql.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
postgresql/src/bin/pg_basebackup/receivelog.h

21 lines
599 B
C
Raw Normal View History

Add pg_recvlogical, a tool to receive data logical decoding data. This is fairly basic at the moment, but it's at least useful for testing and debugging, and possibly more. Andres Freund
2014-03-18 17:19:57 +01:00
#include "libpq-fe.h"
Implement streaming xlog for backup tools Add option for parallel streaming of the transaction log while a base backup is running, to get the logfiles before the server has removed them. Also add a tool called pg_receivexlog, which streams the transaction log into files, creating a log archive without having to wait for segments to complete, thus decreasing the window of data loss without having to waste space using archive_timeout. This works best in combination with archive_command - suggested usage docs etc coming later.
2011-10-26 20:13:33 +02:00
#include "access/xlogdefs.h"
/*
Fix base backup streaming xlog from standby When backing up from a standby server, the backup process will not automatically switch xlog segment. So we must accept a partially transferred xlog file in this case, but rename it into position anyway. In passing, merge the two callbacks for segment end and stop stream into a single callback, since their implementations were close to identical, and rename this callback to reflect that it stops streaming rather than continues it. Patch by Magnus Hagander, review by Fujii Masao
2012-05-25 11:36:22 +02:00
* Called before trying to read more data or when a segment is
* finished. Return true to stop streaming.
Implement streaming xlog for backup tools Add option for parallel streaming of the transaction log while a base backup is running, to get the logfiles before the server has removed them. Also add a tool called pg_receivexlog, which streams the transaction log into files, creating a log archive without having to wait for segments to complete, thus decreasing the window of data loss without having to waste space using archive_timeout. This works best in combination with archive_command - suggested usage docs etc coming later.
2011-10-26 20:13:33 +02:00
*/
Run pgindent on 9.2 source tree in preparation for first 9.3 commit-fest.
2012-06-10 21:20:04 +02:00
typedef bool (*stream_stop_callback) (XLogRecPtr segendpos, uint32 timeline, bool segment_finished);
Implement streaming xlog for backup tools Add option for parallel streaming of the transaction log while a base backup is running, to get the logfiles before the server has removed them. Also add a tool called pg_receivexlog, which streams the transaction log into files, creating a log archive without having to wait for segments to complete, thus decreasing the window of data loss without having to waste space using archive_timeout. This works best in combination with archive_command - suggested usage docs etc coming later.
2011-10-26 20:13:33 +02:00
Make pg_basebackup work with pre-9.3 servers, and add server version check. 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.
2013-03-22 12:02:59 +01:00
extern bool CheckServerVersionForStreaming(PGconn *conn);
Implement streaming xlog for backup tools Add option for parallel streaming of the transaction log while a base backup is running, to get the logfiles before the server has removed them. Also add a tool called pg_receivexlog, which streams the transaction log into files, creating a log archive without having to wait for segments to complete, thus decreasing the window of data loss without having to waste space using archive_timeout. This works best in combination with archive_command - suggested usage docs etc coming later.
2011-10-26 20:13:33 +02:00
extern bool ReceiveXlogStream(PGconn *conn,
Run pgindent on 9.2 source tree in preparation for first 9.3 commit-fest.
2012-06-10 21:20:04 +02:00
XLogRecPtr startpos,
uint32 timeline,
char *sysidentifier,
char *basedir,
stream_stop_callback stream_stop,
int standby_message_timeout,
Add -F option to pg_receivexlog, for specifying fsync interval. This allows us to specify the maximum time to issue fsync to ensure the received WAL file is safely flushed to disk. Without this, pg_receivexlog always flushes WAL file only when it's closed and which can cause WAL data to be lost at the event of a crash. Furuya Osamu, heavily modified by me.
2014-08-08 09:50:54 +02:00
char *partial_suffix,
int fsync_interval);