1
0
mirror of https://github.com/postgres/postgres.git synced 2025-07-07 00:36:50 +03:00

Remove secondary checkpoint

Previously server reserved WAL for last two checkpoints,
which used too much disk space for small servers.

Bumps PG_CONTROL_VERSION

Author: Simon Riggs <simon@2ndQuadrant.com>
Reviewed-by: Michael Paquier <michael.paquier@gmail.com>
This commit is contained in:
Simon Riggs
2017-11-07 12:56:30 -05:00
parent 98267ee83e
commit 4b0d28de06
8 changed files with 61 additions and 125 deletions

View File

@ -93,41 +93,39 @@ pg_control_checkpoint(PG_FUNCTION_ARGS)
tupdesc = CreateTemplateTupleDesc(19, false);
TupleDescInitEntry(tupdesc, (AttrNumber) 1, "checkpoint_lsn",
LSNOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 2, "prior_lsn",
TupleDescInitEntry(tupdesc, (AttrNumber) 2, "redo_lsn",
LSNOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 3, "redo_lsn",
LSNOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 4, "redo_wal_file",
TupleDescInitEntry(tupdesc, (AttrNumber) 3, "redo_wal_file",
TEXTOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 5, "timeline_id",
TupleDescInitEntry(tupdesc, (AttrNumber) 4, "timeline_id",
INT4OID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 6, "prev_timeline_id",
TupleDescInitEntry(tupdesc, (AttrNumber) 5, "prev_timeline_id",
INT4OID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 7, "full_page_writes",
TupleDescInitEntry(tupdesc, (AttrNumber) 6, "full_page_writes",
BOOLOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 8, "next_xid",
TupleDescInitEntry(tupdesc, (AttrNumber) 7, "next_xid",
TEXTOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 9, "next_oid",
TupleDescInitEntry(tupdesc, (AttrNumber) 8, "next_oid",
OIDOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 10, "next_multixact_id",
TupleDescInitEntry(tupdesc, (AttrNumber) 9, "next_multixact_id",
XIDOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 11, "next_multi_offset",
TupleDescInitEntry(tupdesc, (AttrNumber) 10, "next_multi_offset",
XIDOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 12, "oldest_xid",
TupleDescInitEntry(tupdesc, (AttrNumber) 11, "oldest_xid",
XIDOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 13, "oldest_xid_dbid",
TupleDescInitEntry(tupdesc, (AttrNumber) 12, "oldest_xid_dbid",
OIDOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 14, "oldest_active_xid",
TupleDescInitEntry(tupdesc, (AttrNumber) 13, "oldest_active_xid",
XIDOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 15, "oldest_multi_xid",
TupleDescInitEntry(tupdesc, (AttrNumber) 14, "oldest_multi_xid",
XIDOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 16, "oldest_multi_dbid",
TupleDescInitEntry(tupdesc, (AttrNumber) 15, "oldest_multi_dbid",
OIDOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 17, "oldest_commit_ts_xid",
TupleDescInitEntry(tupdesc, (AttrNumber) 16, "oldest_commit_ts_xid",
XIDOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 18, "newest_commit_ts_xid",
TupleDescInitEntry(tupdesc, (AttrNumber) 17, "newest_commit_ts_xid",
XIDOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 19, "checkpoint_time",
TupleDescInitEntry(tupdesc, (AttrNumber) 18, "checkpoint_time",
TIMESTAMPTZOID, -1, 0);
tupdesc = BlessTupleDesc(tupdesc);
@ -149,62 +147,59 @@ pg_control_checkpoint(PG_FUNCTION_ARGS)
values[0] = LSNGetDatum(ControlFile->checkPoint);
nulls[0] = false;
values[1] = LSNGetDatum(ControlFile->prevCheckPoint);
values[1] = LSNGetDatum(ControlFile->checkPointCopy.redo);
nulls[1] = false;
values[2] = LSNGetDatum(ControlFile->checkPointCopy.redo);
values[2] = CStringGetTextDatum(xlogfilename);
nulls[2] = false;
values[3] = CStringGetTextDatum(xlogfilename);
values[3] = Int32GetDatum(ControlFile->checkPointCopy.ThisTimeLineID);
nulls[3] = false;
values[4] = Int32GetDatum(ControlFile->checkPointCopy.ThisTimeLineID);
values[4] = Int32GetDatum(ControlFile->checkPointCopy.PrevTimeLineID);
nulls[4] = false;
values[5] = Int32GetDatum(ControlFile->checkPointCopy.PrevTimeLineID);
values[5] = BoolGetDatum(ControlFile->checkPointCopy.fullPageWrites);
nulls[5] = false;
values[6] = BoolGetDatum(ControlFile->checkPointCopy.fullPageWrites);
nulls[6] = false;
values[7] = CStringGetTextDatum(psprintf("%u:%u",
values[6] = CStringGetTextDatum(psprintf("%u:%u",
ControlFile->checkPointCopy.nextXidEpoch,
ControlFile->checkPointCopy.nextXid));
nulls[6] = false;
values[7] = ObjectIdGetDatum(ControlFile->checkPointCopy.nextOid);
nulls[7] = false;
values[8] = ObjectIdGetDatum(ControlFile->checkPointCopy.nextOid);
values[8] = TransactionIdGetDatum(ControlFile->checkPointCopy.nextMulti);
nulls[8] = false;
values[9] = TransactionIdGetDatum(ControlFile->checkPointCopy.nextMulti);
values[9] = TransactionIdGetDatum(ControlFile->checkPointCopy.nextMultiOffset);
nulls[9] = false;
values[10] = TransactionIdGetDatum(ControlFile->checkPointCopy.nextMultiOffset);
values[10] = TransactionIdGetDatum(ControlFile->checkPointCopy.oldestXid);
nulls[10] = false;
values[11] = TransactionIdGetDatum(ControlFile->checkPointCopy.oldestXid);
values[11] = ObjectIdGetDatum(ControlFile->checkPointCopy.oldestXidDB);
nulls[11] = false;
values[12] = ObjectIdGetDatum(ControlFile->checkPointCopy.oldestXidDB);
values[12] = TransactionIdGetDatum(ControlFile->checkPointCopy.oldestActiveXid);
nulls[12] = false;
values[13] = TransactionIdGetDatum(ControlFile->checkPointCopy.oldestActiveXid);
values[13] = TransactionIdGetDatum(ControlFile->checkPointCopy.oldestMulti);
nulls[13] = false;
values[14] = TransactionIdGetDatum(ControlFile->checkPointCopy.oldestMulti);
values[14] = ObjectIdGetDatum(ControlFile->checkPointCopy.oldestMultiDB);
nulls[14] = false;
values[15] = ObjectIdGetDatum(ControlFile->checkPointCopy.oldestMultiDB);
values[15] = TransactionIdGetDatum(ControlFile->checkPointCopy.oldestCommitTsXid);
nulls[15] = false;
values[16] = TransactionIdGetDatum(ControlFile->checkPointCopy.oldestCommitTsXid);
values[16] = TransactionIdGetDatum(ControlFile->checkPointCopy.newestCommitTsXid);
nulls[16] = false;
values[17] = TransactionIdGetDatum(ControlFile->checkPointCopy.newestCommitTsXid);
nulls[17] = false;
values[18] = TimestampTzGetDatum(
values[17] = TimestampTzGetDatum(
time_t_to_timestamptz(ControlFile->checkPointCopy.time));
nulls[18] = false;
nulls[17] = false;
htup = heap_form_tuple(tupdesc, values, nulls);