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48188e1621
in PITR scenarios. We now WAL-log the replacement of old XIDs with FrozenTransactionId, so that such replacement is guaranteed to propagate to PITR slave databases. Also, rather than relying on hint-bit updates to be preserved, pg_clog is not truncated until all instances of an XID are known to have been replaced by FrozenTransactionId. Add new GUC variables and pg_autovacuum columns to allow management of the freezing policy, so that users can trade off the size of pg_clog against the amount of freezing work done. Revise the already-existing code that forces autovacuum of tables approaching the wraparound point to make it more bulletproof; also, revise the autovacuum logic so that anti-wraparound vacuuming is done per-table rather than per-database. initdb forced because of changes in pg_class, pg_database, and pg_autovacuum catalogs. Heikki Linnakangas, Simon Riggs, and Tom Lane.
43 lines
1.5 KiB
C
43 lines
1.5 KiB
C
/*
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* rmgr.c
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*
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* Resource managers definition
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*
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* $PostgreSQL: pgsql/src/backend/access/transam/rmgr.c,v 1.25 2006/11/05 22:42:07 tgl Exp $
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*/
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#include "postgres.h"
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#include "access/clog.h"
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#include "access/gin.h"
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#include "access/gist_private.h"
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#include "access/hash.h"
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#include "access/heapam.h"
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#include "access/multixact.h"
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#include "access/nbtree.h"
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#include "access/xact.h"
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#include "access/xlog_internal.h"
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#include "commands/dbcommands.h"
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#include "commands/sequence.h"
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#include "commands/tablespace.h"
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#include "storage/smgr.h"
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const RmgrData RmgrTable[RM_MAX_ID + 1] = {
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{"XLOG", xlog_redo, xlog_desc, NULL, NULL, NULL},
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{"Transaction", xact_redo, xact_desc, NULL, NULL, NULL},
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{"Storage", smgr_redo, smgr_desc, NULL, NULL, NULL},
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{"CLOG", clog_redo, clog_desc, NULL, NULL, NULL},
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{"Database", dbase_redo, dbase_desc, NULL, NULL, NULL},
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{"Tablespace", tblspc_redo, tblspc_desc, NULL, NULL, NULL},
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{"MultiXact", multixact_redo, multixact_desc, NULL, NULL, NULL},
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{"Reserved 7", NULL, NULL, NULL, NULL, NULL},
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{"Reserved 8", NULL, NULL, NULL, NULL, NULL},
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{"Heap2", heap2_redo, heap2_desc, NULL, NULL, NULL},
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{"Heap", heap_redo, heap_desc, NULL, NULL, NULL},
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{"Btree", btree_redo, btree_desc, btree_xlog_startup, btree_xlog_cleanup, btree_safe_restartpoint},
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{"Hash", hash_redo, hash_desc, NULL, NULL, NULL},
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{"Gin", gin_redo, gin_desc, gin_xlog_startup, gin_xlog_cleanup, gin_safe_restartpoint},
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{"Gist", gist_redo, gist_desc, gist_xlog_startup, gist_xlog_cleanup, gist_safe_restartpoint},
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{"Sequence", seq_redo, seq_desc, NULL, NULL, NULL}
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};
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