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Preserve relfilenodes:

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Add support to pg_dump --binary-upgrade to preserve all relfilenodes,
for use by pg_migrator.
This commit is contained in:
Bruce Momjian 2010-01-06 03:04:03 +00:00
parent 3ccb97b2e4
commit f98fbc78c3
9 changed files with 152 additions and 73 deletions
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33
src/backend/catalog/heap.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/catalog/heap.c,v 1.364 2010/01/02 16:57:36 momjian Exp $
* $PostgreSQL: pgsql/src/backend/catalog/heap.c,v 1.365 2010/01/06 03:03:58 momjian Exp $
*
*
* INTERFACE ROUTINES
@ -96,6 +96,9 @@ static Node *cookConstraint(ParseState *pstate,
char *relname);
static List *insert_ordered_unique_oid(List *list, Oid datum);
Oid binary_upgrade_next_heap_relfilenode = InvalidOid;
Oid binary_upgrade_next_toast_relfilenode = InvalidOid;
/* ----------------------------------------------------------------
* XXX UGLY HARD CODED BADNESS FOLLOWS XXX
@ -942,15 +945,29 @@ heap_create_with_catalog(const char *relname,
errmsg("only shared relations can be placed in pg_global tablespace")));
}
/*
* Allocate an OID for the relation, unless we were told what to use.
*
* The OID will be the relfilenode as well, so make sure it doesn't
* collide with either pg_class OIDs or existing physical files.
*/
if (!OidIsValid(relid))
if ((relkind == RELKIND_RELATION || relkind == RELKIND_SEQUENCE) &&
OidIsValid(binary_upgrade_next_heap_relfilenode))
{
relid = binary_upgrade_next_heap_relfilenode;
binary_upgrade_next_heap_relfilenode = InvalidOid;
}
else if (relkind == RELKIND_TOASTVALUE &&
OidIsValid(binary_upgrade_next_toast_relfilenode))
{
relid = binary_upgrade_next_toast_relfilenode;
binary_upgrade_next_toast_relfilenode = InvalidOid;
}
else if (!OidIsValid(relid))
{
/*
* Allocate an OID for the relation, unless we were told what to use.
*
* The OID will be the relfilenode as well, so make sure it doesn't
* collide with either pg_class OIDs or existing physical files.
*/
relid = GetNewRelFileNode(reltablespace, shared_relation,
pg_class_desc);
}
/*
* Determine the relation's initial permissions.

26
src/backend/catalog/index.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/catalog/index.c,v 1.328 2010/01/02 16:57:36 momjian Exp $
* $PostgreSQL: pgsql/src/backend/catalog/index.c,v 1.329 2010/01/06 03:03:58 momjian Exp $
*
*
* INTERFACE ROUTINES
@ -79,6 +79,9 @@ typedef struct
tups_inserted;
} v_i_state;
/* For simple relation creation, this is the toast index relfilenode */
Oid binary_upgrade_next_index_relfilenode = InvalidOid;
/* non-export function prototypes */
static TupleDesc ConstructTupleDescriptor(Relation heapRelation,
IndexInfo *indexInfo,
@ -640,15 +643,22 @@ index_create(Oid heapRelationId,
accessMethodObjectId,
classObjectId);
/*
* Allocate an OID for the index, unless we were told what to use.
*
* The OID will be the relfilenode as well, so make sure it doesn't
* collide with either pg_class OIDs or existing physical files.
*/
if (!OidIsValid(indexRelationId))
if (OidIsValid(binary_upgrade_next_index_relfilenode))
{
indexRelationId = binary_upgrade_next_index_relfilenode;
binary_upgrade_next_index_relfilenode = InvalidOid;
}
else if (!OidIsValid(indexRelationId))
{
/*
* Allocate an OID for the index, unless we were told what to use.
*
* The OID will be the relfilenode as well, so make sure it doesn't
* collide with either pg_class OIDs or existing physical files.
*/
indexRelationId = GetNewRelFileNode(tableSpaceId, shared_relation,
pg_class);
}
/*
* create the index relation's relcache entry and physical disk file. (If

35
src/backend/catalog/toasting.c
View File

@ -8,7 +8,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/catalog/toasting.c,v 1.26 2010/01/02 16:57:36 momjian Exp $
* $PostgreSQL: pgsql/src/backend/catalog/toasting.c,v 1.27 2010/01/06 03:03:58 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -32,22 +32,17 @@
#include "utils/syscache.h"
Oid binary_upgrade_next_pg_type_toast_oid = InvalidOid;
extern Oid binary_upgrade_next_toast_relfilenode;
static bool create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
Datum reloptions, bool force);
Datum reloptions);
static bool needs_toast_table(Relation rel);
/*
* AlterTableCreateToastTable
* If the table needs a toast table, and doesn't already have one,
* then create a toast table for it. (With the force option, make
* a toast table even if it appears unnecessary.)
*
* The caller can also specify the OID to be used for the toast table.
* Usually, toastOid should be InvalidOid to allow a free OID to be assigned.
* (This option, as well as the force option, is not used by core Postgres,
* but is provided to support pg_migrator.)
* then create a toast table for it.
*
* reloptions for the toast table can be passed, too. Pass (Datum) 0
* for default reloptions.
@ -57,8 +52,7 @@ static bool needs_toast_table(Relation rel);
* to end with CommandCounterIncrement if it makes any changes.
*/
void
AlterTableCreateToastTable(Oid relOid, Oid toastOid,
Datum reloptions, bool force)
AlterTableCreateToastTable(Oid relOid, Datum reloptions)
{
Relation rel;
@ -70,7 +64,7 @@ AlterTableCreateToastTable(Oid relOid, Oid toastOid,
rel = heap_open(relOid, AccessExclusiveLock);
/* create_toast_table does all the work */
(void) create_toast_table(rel, toastOid, InvalidOid, reloptions, force);
(void) create_toast_table(rel, InvalidOid, InvalidOid, reloptions);
heap_close(rel, NoLock);
}
@ -96,7 +90,7 @@ BootstrapToastTable(char *relName, Oid toastOid, Oid toastIndexOid)
relName)));
/* create_toast_table does all the work */
if (!create_toast_table(rel, toastOid, toastIndexOid, (Datum) 0, false))
if (!create_toast_table(rel, toastOid, toastIndexOid, (Datum) 0))
elog(ERROR, "\"%s\" does not require a toast table",
relName);
@ -108,12 +102,11 @@ BootstrapToastTable(char *relName, Oid toastOid, Oid toastIndexOid)
* create_toast_table --- internal workhorse
*
* rel is already opened and exclusive-locked
* toastOid and toastIndexOid are normally InvalidOid, but
* either or both can be nonzero to specify caller-assigned OIDs
* toastOid and toastIndexOid are normally InvalidOid, but during
* bootstrap they can be nonzero to specify hand-assigned OIDs
*/
static bool
create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
Datum reloptions, bool force)
create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid, Datum reloptions)
{
Oid relOid = RelationGetRelid(rel);
HeapTuple reltup;
@ -152,12 +145,10 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
/*
* Check to see whether the table actually needs a TOAST table.
*
* Caller can optionally override this check. (Note: at present no
* callers in core Postgres do so, but this option is needed by
* pg_migrator.)
* If the relfilenode is specified, force toast file creation.
*/
if (!force && !needs_toast_table(rel))
if (!needs_toast_table(rel) &&
!OidIsValid(binary_upgrade_next_toast_relfilenode))
return false;
/*

4
src/backend/commands/cluster.c
View File

@ -11,7 +11,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/cluster.c,v 1.189 2010/01/02 16:57:37 momjian Exp $
* $PostgreSQL: pgsql/src/backend/commands/cluster.c,v 1.190 2010/01/06 03:04:00 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -743,7 +743,7 @@ make_new_heap(Oid OIDOldHeap, const char *NewName, Oid NewTableSpace)
if (isNull)
reloptions = (Datum) 0;
}
AlterTableCreateToastTable(OIDNewHeap, InvalidOid, reloptions, false);
AlterTableCreateToastTable(OIDNewHeap, reloptions);
if (OidIsValid(toastid))
ReleaseSysCache(tuple);

5
src/backend/commands/tablecmds.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/tablecmds.c,v 1.313 2010/01/02 16:57:37 momjian Exp $
* $PostgreSQL: pgsql/src/backend/commands/tablecmds.c,v 1.314 2010/01/06 03:04:00 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -2614,8 +2614,7 @@ ATRewriteCatalogs(List **wqueue)
(tab->subcmds[AT_PASS_ADD_COL] ||
tab->subcmds[AT_PASS_ALTER_TYPE] ||
tab->subcmds[AT_PASS_COL_ATTRS]))
AlterTableCreateToastTable(tab->relid, InvalidOid,
(Datum) 0, false);
AlterTableCreateToastTable(tab->relid, (Datum) 0);
}
}

4
src/backend/executor/execMain.c
View File

@ -26,7 +26,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/executor/execMain.c,v 1.339 2010/01/02 16:57:40 momjian Exp $
* $PostgreSQL: pgsql/src/backend/executor/execMain.c,v 1.340 2010/01/06 03:04:01 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -2194,7 +2194,7 @@ OpenIntoRel(QueryDesc *queryDesc)
(void) heap_reloptions(RELKIND_TOASTVALUE, reloptions, true);
AlterTableCreateToastTable(intoRelationId, InvalidOid, reloptions, false);
AlterTableCreateToastTable(intoRelationId, reloptions);
/*
* And open the constructed table for writing.

10
src/backend/tcop/utility.c
View File

@ -10,7 +10,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/tcop/utility.c,v 1.327 2010/01/05 21:53:58 rhaas Exp $
* $PostgreSQL: pgsql/src/backend/tcop/utility.c,v 1.328 2010/01/06 03:04:01 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -492,14 +492,10 @@ standard_ProcessUtility(Node *parsetree,
"toast",
validnsps,
true, false);
(void) heap_reloptions(RELKIND_TOASTVALUE,
toast_options,
(void) heap_reloptions(RELKIND_TOASTVALUE, toast_options,
true);
AlterTableCreateToastTable(relOid,
InvalidOid,
toast_options,
false);
AlterTableCreateToastTable(relOid, toast_options);
}
else
{

103
src/bin/pg_dump/pg_dump.c
View File

@ -12,7 +12,7 @@
* by PostgreSQL
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/bin/pg_dump/pg_dump.c,v 1.564 2010/01/02 16:57:59 momjian Exp $
* $PostgreSQL: pgsql/src/bin/pg_dump/pg_dump.c,v 1.565 2010/01/06 03:04:02 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -200,7 +200,8 @@ static void binary_upgrade_set_type_oids_by_type_oid(
PQExpBuffer upgrade_buffer, Oid pg_type_oid);
static bool binary_upgrade_set_type_oids_by_rel_oid(
PQExpBuffer upgrade_buffer, Oid pg_rel_oid);
static void binary_upgrade_clear_pg_type_toast_oid(PQExpBuffer upgrade_buffer);
static void binary_upgrade_set_relfilenodes(PQExpBuffer upgrade_buffer,
Oid pg_class_oid, bool is_index);
static const char *getAttrName(int attrnum, TableInfo *tblInfo);
static const char *fmtCopyColumnList(const TableInfo *ti);
static void do_sql_command(PGconn *conn, const char *query);
@ -2289,21 +2290,78 @@ binary_upgrade_set_type_oids_by_rel_oid(PQExpBuffer upgrade_buffer,
}
static void
binary_upgrade_clear_pg_type_toast_oid(PQExpBuffer upgrade_buffer)
binary_upgrade_set_relfilenodes(PQExpBuffer upgrade_buffer, Oid pg_class_oid,
bool is_index)
{
/*
* One complexity is that while the heap might now have a TOAST table,
* the TOAST table might have been created long after creation when
* the table was loaded with wide data. For that reason, we clear
* binary_upgrade_set_next_pg_type_toast_oid so it is not reused
* by a later table. Logically any later creation that needs a TOAST
* table should have its own TOAST pg_type oid, but we are cautious.
*/
PQExpBuffer upgrade_query = createPQExpBuffer();
int ntups;
PGresult *upgrade_res;
Oid pg_class_relfilenode;
Oid pg_class_reltoastrelid;
Oid pg_class_reltoastidxid;
appendPQExpBuffer(upgrade_query,
"SELECT c.relfilenode, c.reltoastrelid, t.reltoastidxid "
"FROM pg_catalog.pg_class c LEFT JOIN "
"pg_catalog.pg_class t ON (c.reltoastrelid = t.oid) "
"WHERE c.oid = '%u'::pg_catalog.oid;",
pg_class_oid);
upgrade_res = PQexec(g_conn, upgrade_query->data);
check_sql_result(upgrade_res, g_conn, upgrade_query->data, PGRES_TUPLES_OK);
/* Expecting a single result only */
ntups = PQntuples(upgrade_res);
if (ntups != 1)
{
write_msg(NULL, ngettext("query returned %d row instead of one: %s\n",
"query returned %d rows instead of one: %s\n",
ntups),
ntups, upgrade_query->data);
exit_nicely();
}
pg_class_relfilenode = atooid(PQgetvalue(upgrade_res, 0, PQfnumber(upgrade_res, "relfilenode")));
pg_class_reltoastrelid = atooid(PQgetvalue(upgrade_res, 0, PQfnumber(upgrade_res, "reltoastrelid")));
pg_class_reltoastidxid = atooid(PQgetvalue(upgrade_res, 0, PQfnumber(upgrade_res, "reltoastidxid")));
appendPQExpBuffer(upgrade_buffer,
"\n-- For binary upgrade, clear toast oid because it might not have been needed\n");
appendPQExpBuffer(upgrade_buffer,
"SELECT binary_upgrade.set_next_pg_type_oid('%u'::pg_catalog.oid);\n\n",
InvalidOid);
"\n-- For binary upgrade, must preserve relfilenodes\n");
if (!is_index)
appendPQExpBuffer(upgrade_buffer,
"SELECT binary_upgrade.set_next_heap_relfilenode('%u'::pg_catalog.oid);\n",
pg_class_relfilenode);
else
appendPQExpBuffer(upgrade_buffer,
"SELECT binary_upgrade.set_next_index_relfilenode('%u'::pg_catalog.oid);\n",
pg_class_relfilenode);
if (OidIsValid(pg_class_reltoastrelid))
{
/*
* One complexity is that the table definition might not require
* the creation of a TOAST table, and the TOAST table might have
* been created long after table creation, when the table was
* loaded with wide data. By setting the TOAST relfilenode we
* force creation of the TOAST heap and TOAST index by the
* backend so we can cleanly migrate the files during binary
* migration.
*/
appendPQExpBuffer(upgrade_buffer,
"SELECT binary_upgrade.set_next_toast_relfilenode('%u'::pg_catalog.oid);\n",
pg_class_reltoastrelid);
/* every toast table has an index */
appendPQExpBuffer(upgrade_buffer,
"SELECT binary_upgrade.set_next_index_relfilenode('%u'::pg_catalog.oid);\n",
pg_class_reltoastidxid);
}
appendPQExpBuffer(upgrade_buffer, "\n");
PQclear(upgrade_res);
destroyPQExpBuffer(upgrade_query);
}
/*
@ -10480,6 +10538,9 @@ dumpTableSchema(Archive *fout, TableInfo *tbinfo)
appendPQExpBuffer(delq, "%s;\n",
fmtId(tbinfo->dobj.name));
if (binary_upgrade)
binary_upgrade_set_relfilenodes(q, tbinfo->dobj.catId.oid, false);
appendPQExpBuffer(q, "CREATE TABLE %s (",
fmtId(tbinfo->dobj.name));
actual_atts = 0;
@ -10781,9 +10842,6 @@ dumpTableSchema(Archive *fout, TableInfo *tbinfo)
}
}
if (binary_upgrade && toast_set)
binary_upgrade_clear_pg_type_toast_oid(q);
ArchiveEntry(fout, tbinfo->dobj.catId, tbinfo->dobj.dumpId,
tbinfo->dobj.name,
tbinfo->dobj.namespace->dobj.name,
@ -10926,6 +10984,9 @@ dumpIndex(Archive *fout, IndxInfo *indxinfo)
*/
if (indxinfo->indexconstraint == 0)
{
if (binary_upgrade)
binary_upgrade_set_relfilenodes(q, indxinfo->dobj.catId.oid, true);
/* Plain secondary index */
appendPQExpBuffer(q, "%s;\n", indxinfo->indexdef);
@ -11006,6 +11067,9 @@ dumpConstraint(Archive *fout, ConstraintInfo *coninfo)
exit_nicely();
}
if (binary_upgrade && !coninfo->condef)
binary_upgrade_set_relfilenodes(q, indxinfo->dobj.catId.oid, true);
appendPQExpBuffer(q, "ALTER TABLE ONLY %s\n",
fmtId(tbinfo->dobj.name));
appendPQExpBuffer(q, " ADD CONSTRAINT %s ",
@ -11416,7 +11480,10 @@ dumpSequence(Archive *fout, TableInfo *tbinfo)
resetPQExpBuffer(query);
if (binary_upgrade)
{
binary_upgrade_set_relfilenodes(query, tbinfo->dobj.catId.oid, false);
binary_upgrade_set_type_oids_by_rel_oid(query, tbinfo->dobj.catId.oid);
}
appendPQExpBuffer(query,
"CREATE SEQUENCE %s\n",

5
src/include/catalog/toasting.h
View File

@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/catalog/toasting.h,v 1.12 2010/01/05 01:06:57 tgl Exp $
* $PostgreSQL: pgsql/src/include/catalog/toasting.h,v 1.13 2010/01/06 03:04:03 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -17,8 +17,7 @@
/*
* toasting.c prototypes
*/
extern void AlterTableCreateToastTable(Oid relOid, Oid toastOid,
Datum reloptions, bool force);
extern void AlterTableCreateToastTable(Oid relOid, Datum reloptions);
extern void BootstrapToastTable(char *relName,
Oid toastOid, Oid toastIndexOid);