diff options
| author | Simon Riggs | 2013-01-29 00:06:15 +0000 |
|---|---|---|
| committer | Simon Riggs | 2013-01-29 00:06:15 +0000 |
| commit | fd4ced5230162b50a5c9d33b4bf9cfb1231aa62e (patch) | |
| tree | 2885c42307d960d313165dc1faa5cb34ff59eb5f /src/include | |
| parent | ee22c55f5ad2e7b7032cd6c0243254d84d4496c7 (diff) | |
Fast promote mode skips checkpoint at end of recovery.
pg_ctl promote -m fast will skip the checkpoint at end of recovery so that we
can achieve very fast failover when the apply delay is low. Write new WAL record
XLOG_END_OF_RECOVERY to allow us to switch timeline correctly for downstream log
readers. If we skip synchronous end of recovery checkpoint we request a normal
spread checkpoint so that the window of re-recovery is low.
Simon Riggs and Kyotaro Horiguchi, with input from Fujii Masao.
Review by Heikki Linnakangas
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/access/xlog_internal.h | 6 | ||||
| -rw-r--r-- | src/include/catalog/pg_control.h | 1 |
2 files changed, 7 insertions, 0 deletions
diff --git a/src/include/access/xlog_internal.h b/src/include/access/xlog_internal.h index 43e1e60f9bf..ce9957e618f 100644 --- a/src/include/access/xlog_internal.h +++ b/src/include/access/xlog_internal.h @@ -217,6 +217,12 @@ typedef struct xl_restore_point char rp_name[MAXFNAMELEN]; } xl_restore_point; +/* End of recovery mark, when we don't do an END_OF_RECOVERY checkpoint */ +typedef struct xl_end_of_recovery +{ + TimestampTz end_time; + TimeLineID ThisTimeLineID; +} xl_end_of_recovery; /* * XLogRecord is defined in xlog.h, but we avoid #including that to keep diff --git a/src/include/catalog/pg_control.h b/src/include/catalog/pg_control.h index e4a9abe7bc5..ec8cea7c86e 100644 --- a/src/include/catalog/pg_control.h +++ b/src/include/catalog/pg_control.h @@ -64,6 +64,7 @@ typedef struct CheckPoint #define XLOG_PARAMETER_CHANGE 0x60 #define XLOG_RESTORE_POINT 0x70 #define XLOG_FPW_CHANGE 0x80 +#define XLOG_END_OF_RECOVERY 0x90 /* |