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Add archive_mode='always' option.

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In 'always' mode, the standby independently archives all files it receives
from the primary.

Original patch by Fujii Masao, docs and review by me.
This commit is contained in:
Heikki Linnakangas
2015-05-15 18:55:24 +03:00
parent f6d65f0c70
commit ffd37740ee
9 changed files with 133 additions and 29 deletions
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13
src/include/access/xlog.h
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@@ -98,7 +98,6 @@ extern int wal_keep_segments;
extern int XLOGbuffers;
extern int XLogArchiveTimeout;
extern int wal_retrieve_retry_interval;
extern bool XLogArchiveMode;
extern char *XLogArchiveCommand;
extern bool EnableHotStandby;
extern bool fullPageWrites;
@@ -108,6 +107,15 @@ extern bool log_checkpoints;
extern int CheckPointSegments;
/* Archive modes */
typedef enum ArchiveMode
{
ARCHIVE_MODE_OFF = 0, /* disabled */
ARCHIVE_MODE_ON, /* enabled while server is running normally */
ARCHIVE_MODE_ALWAYS /* enabled always (even during recovery) */
} ArchiveMode;
extern int XLogArchiveMode;
/* WAL levels */
typedef enum WalLevel
{
@@ -118,7 +126,8 @@ typedef enum WalLevel
} WalLevel;
extern int wal_level;
#define XLogArchivingActive() (XLogArchiveMode && wal_level >= WAL_LEVEL_ARCHIVE)
#define XLogArchivingActive() \
(XLogArchiveMode > ARCHIVE_MODE_OFF && wal_level >= WAL_LEVEL_ARCHIVE)
#define XLogArchiveCommandSet() (XLogArchiveCommand[0] != '\0')
/*