Robert Haas wrote:
> On Apr 21, 2011, at 6:22 PM, Bruce Momjian <br...@momjian.us> wrote:
> > Tom Lane wrote:
> >> Bruce Momjian <br...@momjian.us> writes:
> >>> Tom Lane wrote:
> >>>> Huh? Why would that be? Seems like you've done something in the wrong
> >>>> place if that's an issue.
> >>
> >>> Yeah, it is complicated. I don't really care if autovacuum runs on the
> >>> old cluster (we only move the files while the server is down). We only
> >>> want autovacuum not to mess with the relfrozenxids we set on the new
> >>> cluster while the table file is empty.
> >>
> >>> The other issue is that the old alpha binary will not know about the -b
> >>> flag and hence will not start.
> >>
> >> Well, once again, why are you trying to do that? It's not the source
> >> postmaster that needs this flag.
> >
> > Well, consider that this also locks out non-super users so I figured it
> > would be good to run the old and new in the same binary upgrade mode.
> > Again, we can do just the new cluster for 9.1. I can also control the
> > behavior based on the catalog version number, which seems the most
> > logical.
>
> I think you are over-engineering this. Just use it for the new cluster
> only, full stop, and you'll be right as rain.
I thought some more about this and I don't want autovacuum to run on the
old server. This is because pg_dumpall --binary-upgrade --schema-only
grabs the datfrozenxid for all the databases at the start, then connects
to each database to gets the relfrozenxids. I don't want to risk any
advancement of either of those during the pg_dumpall run.
FYI, the existing code already doesn't allow autovacuum to run on the old
or new cluster by setting autovacuum off and autovacuum_freeze_max_age
very high, so this is not a behavior change --- just a more formalized
way of turning off autovacuum.
The attached patch uses catalog version to test; we use catalog version
checking already for tablespace subdirectories.
--
Bruce Momjian <br...@momjian.us> http://momjian.us
EnterpriseDB http://enterprisedb.com
+ It's impossible for everything to be true. +
diff --git a/contrib/pg_upgrade/check.c b/contrib/pg_upgrade/check.c
new file mode 100644
index d1dc5db..7623c5e
*** a/contrib/pg_upgrade/check.c
--- b/contrib/pg_upgrade/check.c
*************** check_cluster_compatibility(bool live_ch
*** 264,270 ****
/* Is it 9.0 but without tablespace directories? */
if (GET_MAJOR_VERSION(new_cluster.major_version) == 900 &&
! new_cluster.controldata.cat_ver < TABLE_SPACE_SUBDIRS)
pg_log(PG_FATAL, "This utility can only upgrade to PostgreSQL version 9.0 after 2010-01-11\n"
"because of backend API changes made during development.\n");
}
--- 264,270 ----
/* Is it 9.0 but without tablespace directories? */
if (GET_MAJOR_VERSION(new_cluster.major_version) == 900 &&
! new_cluster.controldata.cat_ver < CAT_VER_TABLE_SPACE_SUBDIRS)
pg_log(PG_FATAL, "This utility can only upgrade to PostgreSQL version 9.0 after 2010-01-11\n"
"because of backend API changes made during development.\n");
}
diff --git a/contrib/pg_upgrade/pg_upgrade.h b/contrib/pg_upgrade/pg_upgrade.h
new file mode 100644
index 5ca570e..70d74ba
*** a/contrib/pg_upgrade/pg_upgrade.h
--- b/contrib/pg_upgrade/pg_upgrade.h
***************
*** 58,64 ****
#define atooid(x) ((Oid) strtoul((x), NULL, 10))
/* OID system catalog preservation added during PG 9.0 development */
! #define TABLE_SPACE_SUBDIRS 201001111
/*
* Each relation is represented by a relinfo structure.
--- 58,66 ----
#define atooid(x) ((Oid) strtoul((x), NULL, 10))
/* OID system catalog preservation added during PG 9.0 development */
! #define CAT_VER_TABLE_SPACE_SUBDIRS 201001111
! /* postmaster/postgres -b (binary_upgrade) flag added during PG 9.1 development */
! #define CAT_VER_BINARY_UPGRADE_SERVER_FLAG 201104221
/*
* Each relation is represented by a relinfo structure.
diff --git a/contrib/pg_upgrade/server.c b/contrib/pg_upgrade/server.c
new file mode 100644
index 2a0f50e..f7d7653
*** a/contrib/pg_upgrade/server.c
--- b/contrib/pg_upgrade/server.c
*************** start_postmaster(ClusterInfo *cluster, b
*** 173,178 ****
--- 173,183 ----
const char *datadir;
unsigned short port;
bool exit_hook_registered = false;
+ #ifndef WIN32
+ char *output_filename = log_opts.filename;
+ #else
+ char *output_filename = DEVNULL;
+ #endif
bindir = cluster->bindir;
datadir = cluster->pgdata;
*************** start_postmaster(ClusterInfo *cluster, b
*** 193,216 ****
* same file because we get the error: "The process cannot access the file
* because it is being used by another process." so we have to send all
* other output to 'nul'.
! *
! * Using autovacuum=off disables cleanup vacuum and analyze, but freeze
! * vacuums can still happen, so we set autovacuum_freeze_max_age to its
! * maximum. We assume all datfrozenxid and relfrozen values are less than
! * a gap of 2000000000 from the current xid counter, so autovacuum will
! * not touch them.
*/
snprintf(cmd, sizeof(cmd),
SYSTEMQUOTE "\"%s/pg_ctl\" -l \"%s\" -D \"%s\" "
! "-o \"-p %d -c autovacuum=off "
! "-c autovacuum_freeze_max_age=2000000000\" "
! "start >> \"%s\" 2>&1" SYSTEMQUOTE,
! bindir,
! #ifndef WIN32
! log_opts.filename, datadir, port, log_opts.filename);
! #else
! DEVNULL, datadir, port, DEVNULL);
! #endif
exec_prog(true, "%s", cmd);
/* wait for the server to start properly */
--- 198,213 ----
* same file because we get the error: "The process cannot access the file
* because it is being used by another process." so we have to send all
* other output to 'nul'.
! * Use binary upgrade mode on the server (-b), if supported.
*/
snprintf(cmd, sizeof(cmd),
SYSTEMQUOTE "\"%s/pg_ctl\" -l \"%s\" -D \"%s\" "
! "-o \"-p %d%s\" start >> \"%s\" 2>&1" SYSTEMQUOTE,
! bindir, output_filename, datadir, port,
! (cluster->controldata.cat_ver >=
! CAT_VER_BINARY_UPGRADE_SERVER_FLAG) ? " -b" : "",
! log_opts.filename);
!
exec_prog(true, "%s", cmd);
/* wait for the server to start properly */
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
new file mode 100644
index 8c5670f..870ddba
*** a/src/backend/catalog/heap.c
--- b/src/backend/catalog/heap.c
*************** heap_create_with_catalog(const char *rel
*** 1051,1057 ****
* Use binary-upgrade override for pg_class.oid/relfilenode, if
* supplied.
*/
! if (OidIsValid(binary_upgrade_next_heap_pg_class_oid) &&
(relkind == RELKIND_RELATION || relkind == RELKIND_SEQUENCE ||
relkind == RELKIND_VIEW || relkind == RELKIND_COMPOSITE_TYPE ||
relkind == RELKIND_FOREIGN_TABLE))
--- 1051,1058 ----
* Use binary-upgrade override for pg_class.oid/relfilenode, if
* supplied.
*/
! if (IsBinaryUpgrade &&
! OidIsValid(binary_upgrade_next_heap_pg_class_oid) &&
(relkind == RELKIND_RELATION || relkind == RELKIND_SEQUENCE ||
relkind == RELKIND_VIEW || relkind == RELKIND_COMPOSITE_TYPE ||
relkind == RELKIND_FOREIGN_TABLE))
*************** heap_create_with_catalog(const char *rel
*** 1059,1065 ****
relid = binary_upgrade_next_heap_pg_class_oid;
binary_upgrade_next_heap_pg_class_oid = InvalidOid;
}
! else if (OidIsValid(binary_upgrade_next_toast_pg_class_oid) &&
relkind == RELKIND_TOASTVALUE)
{
relid = binary_upgrade_next_toast_pg_class_oid;
--- 1060,1067 ----
relid = binary_upgrade_next_heap_pg_class_oid;
binary_upgrade_next_heap_pg_class_oid = InvalidOid;
}
! else if (IsBinaryUpgrade &&
! OidIsValid(binary_upgrade_next_toast_pg_class_oid) &&
relkind == RELKIND_TOASTVALUE)
{
relid = binary_upgrade_next_toast_pg_class_oid;
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
new file mode 100644
index c79402c..a662cfc
*** a/src/backend/catalog/index.c
--- b/src/backend/catalog/index.c
*************** index_create(Relation heapRelation,
*** 790,796 ****
* Use binary-upgrade override for pg_class.oid/relfilenode, if
* supplied.
*/
! if (OidIsValid(binary_upgrade_next_index_pg_class_oid))
{
indexRelationId = binary_upgrade_next_index_pg_class_oid;
binary_upgrade_next_index_pg_class_oid = InvalidOid;
--- 790,797 ----
* Use binary-upgrade override for pg_class.oid/relfilenode, if
* supplied.
*/
! if (IsBinaryUpgrade &&
! OidIsValid(binary_upgrade_next_index_pg_class_oid))
{
indexRelationId = binary_upgrade_next_index_pg_class_oid;
binary_upgrade_next_index_pg_class_oid = InvalidOid;
diff --git a/src/backend/catalog/pg_enum.c b/src/backend/catalog/pg_enum.c
new file mode 100644
index 08d8aa1..61a9322
*** a/src/backend/catalog/pg_enum.c
--- b/src/backend/catalog/pg_enum.c
***************
*** 21,26 ****
--- 21,27 ----
#include "catalog/pg_enum.h"
#include "catalog/pg_type.h"
#include "storage/lmgr.h"
+ #include "miscadmin.h"
#include "utils/builtins.h"
#include "utils/fmgroids.h"
#include "utils/rel.h"
*************** restart:
*** 311,317 ****
}
/* Get a new OID for the new label */
! if (OidIsValid(binary_upgrade_next_pg_enum_oid))
{
/*
* Use binary-upgrade override for pg_enum.oid, if supplied. During
--- 312,318 ----
}
/* Get a new OID for the new label */
! if (IsBinaryUpgrade && OidIsValid(binary_upgrade_next_pg_enum_oid))
{
/*
* Use binary-upgrade override for pg_enum.oid, if supplied. During
diff --git a/src/backend/catalog/pg_type.c b/src/backend/catalog/pg_type.c
new file mode 100644
index 9e35e73..80c1bfc
*** a/src/backend/catalog/pg_type.c
--- b/src/backend/catalog/pg_type.c
*************** TypeShellMake(const char *typeName, Oid
*** 125,131 ****
tup = heap_form_tuple(tupDesc, values, nulls);
/* Use binary-upgrade override for pg_type.oid, if supplied. */
! if (OidIsValid(binary_upgrade_next_pg_type_oid))
{
HeapTupleSetOid(tup, binary_upgrade_next_pg_type_oid);
binary_upgrade_next_pg_type_oid = InvalidOid;
--- 125,131 ----
tup = heap_form_tuple(tupDesc, values, nulls);
/* Use binary-upgrade override for pg_type.oid, if supplied. */
! if (IsBinaryUpgrade && OidIsValid(binary_upgrade_next_pg_type_oid))
{
HeapTupleSetOid(tup, binary_upgrade_next_pg_type_oid);
binary_upgrade_next_pg_type_oid = InvalidOid;
*************** TypeCreate(Oid newTypeOid,
*** 430,436 ****
if (OidIsValid(newTypeOid))
HeapTupleSetOid(tup, newTypeOid);
/* Use binary-upgrade override for pg_type.oid, if supplied. */
! else if (OidIsValid(binary_upgrade_next_pg_type_oid))
{
HeapTupleSetOid(tup, binary_upgrade_next_pg_type_oid);
binary_upgrade_next_pg_type_oid = InvalidOid;
--- 430,436 ----
if (OidIsValid(newTypeOid))
HeapTupleSetOid(tup, newTypeOid);
/* Use binary-upgrade override for pg_type.oid, if supplied. */
! else if (IsBinaryUpgrade && OidIsValid(binary_upgrade_next_pg_type_oid))
{
HeapTupleSetOid(tup, binary_upgrade_next_pg_type_oid);
binary_upgrade_next_pg_type_oid = InvalidOid;
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
new file mode 100644
index 85fe57f..362d26d
*** a/src/backend/catalog/toasting.c
--- b/src/backend/catalog/toasting.c
*************** create_toast_table(Relation rel, Oid toa
*** 157,163 ****
* creation even if it seems not to need one.
*/
if (!needs_toast_table(rel) &&
! !OidIsValid(binary_upgrade_next_toast_pg_class_oid))
return false;
/*
--- 157,164 ----
* creation even if it seems not to need one.
*/
if (!needs_toast_table(rel) &&
! (!IsBinaryUpgrade ||
! !OidIsValid(binary_upgrade_next_toast_pg_class_oid)))
return false;
/*
*************** create_toast_table(Relation rel, Oid toa
*** 202,208 ****
namespaceid = PG_TOAST_NAMESPACE;
/* Use binary-upgrade override for pg_type.oid, if supplied. */
! if (OidIsValid(binary_upgrade_next_toast_pg_type_oid))
{
toast_typid = binary_upgrade_next_toast_pg_type_oid;
binary_upgrade_next_toast_pg_type_oid = InvalidOid;
--- 203,209 ----
namespaceid = PG_TOAST_NAMESPACE;
/* Use binary-upgrade override for pg_type.oid, if supplied. */
! if (IsBinaryUpgrade && OidIsValid(binary_upgrade_next_toast_pg_type_oid))
{
toast_typid = binary_upgrade_next_toast_pg_type_oid;
binary_upgrade_next_toast_pg_type_oid = InvalidOid;
diff --git a/src/backend/commands/typecmds.c b/src/backend/commands/typecmds.c
new file mode 100644
index 1a20b0d..b3b6dc2
*** a/src/backend/commands/typecmds.c
--- b/src/backend/commands/typecmds.c
*************** AssignTypeArrayOid(void)
*** 1550,1556 ****
Oid type_array_oid;
/* Use binary-upgrade override for pg_type.typarray, if supplied. */
! if (OidIsValid(binary_upgrade_next_array_pg_type_oid))
{
type_array_oid = binary_upgrade_next_array_pg_type_oid;
binary_upgrade_next_array_pg_type_oid = InvalidOid;
--- 1550,1556 ----
Oid type_array_oid;
/* Use binary-upgrade override for pg_type.typarray, if supplied. */
! if (IsBinaryUpgrade && OidIsValid(binary_upgrade_next_array_pg_type_oid))
{
type_array_oid = binary_upgrade_next_array_pg_type_oid;
binary_upgrade_next_array_pg_type_oid = InvalidOid;
diff --git a/src/backend/commands/user.c b/src/backend/commands/user.c
new file mode 100644
index 3f7d499..838d6eb
*** a/src/backend/commands/user.c
--- b/src/backend/commands/user.c
*************** CreateRole(CreateRoleStmt *stmt)
*** 388,394 ****
* pg_largeobject_metadata contains pg_authid.oid's, so we use the
* binary-upgrade override, if specified.
*/
! if (OidIsValid(binary_upgrade_next_pg_authid_oid))
{
HeapTupleSetOid(tuple, binary_upgrade_next_pg_authid_oid);
binary_upgrade_next_pg_authid_oid = InvalidOid;
--- 388,394 ----
* pg_largeobject_metadata contains pg_authid.oid's, so we use the
* binary-upgrade override, if specified.
*/
! if (IsBinaryUpgrade && OidIsValid(binary_upgrade_next_pg_authid_oid))
{
HeapTupleSetOid(tuple, binary_upgrade_next_pg_authid_oid);
binary_upgrade_next_pg_authid_oid = InvalidOid;
diff --git a/src/backend/postmaster/postmaster.c b/src/backend/postmaster/postmaster.c
new file mode 100644
index 6e7f664..c0cf033
*** a/src/backend/postmaster/postmaster.c
--- b/src/backend/postmaster/postmaster.c
*************** PostmasterMain(int argc, char *argv[])
*** 529,535 ****
* tcop/postgres.c (the option sets should not conflict) and with the
* common help() function in main/main.c.
*/
! while ((opt = getopt(argc, argv, "A:B:c:D:d:EeFf:h:ijk:lN:nOo:Pp:r:S:sTt:W:-:")) != -1)
{
switch (opt)
{
--- 529,535 ----
* tcop/postgres.c (the option sets should not conflict) and with the
* common help() function in main/main.c.
*/
! while ((opt = getopt(argc, argv, "A:B:bc:D:d:EeFf:h:ijk:lN:nOo:Pp:r:S:sTt:W:-:")) != -1)
{
switch (opt)
{
*************** PostmasterMain(int argc, char *argv[])
*** 541,546 ****
--- 541,551 ----
SetConfigOption("shared_buffers", optarg, PGC_POSTMASTER, PGC_S_ARGV);
break;
+ case 'b':
+ /* Undocumented flag used for binary upgrades */
+ IsBinaryUpgrade = true;
+ break;
+
case 'D':
userDoption = optarg;
break;
*************** ServerLoop(void)
*** 1480,1487 ****
if (WalWriterPID == 0 && pmState == PM_RUN)
WalWriterPID = StartWalWriter();
! /* If we have lost the autovacuum launcher, try to start a new one */
! if (AutoVacPID == 0 &&
(AutoVacuumingActive() || start_autovac_launcher) &&
pmState == PM_RUN)
{
--- 1485,1497 ----
if (WalWriterPID == 0 && pmState == PM_RUN)
WalWriterPID = StartWalWriter();
! /*
! * If we have lost the autovacuum launcher, try to start a new one.
! * We don't want autovacuum to run in binary upgrade mode because
! * autovacuum might update relfrozenxid for empty tables before
! * the physical files are put in place.
! */
! if (!IsBinaryUpgrade && AutoVacPID == 0 &&
(AutoVacuumingActive() || start_autovac_launcher) &&
pmState == PM_RUN)
{
*************** reaper(SIGNAL_ARGS)
*** 2413,2419 ****
*/
if (WalWriterPID == 0)
WalWriterPID = StartWalWriter();
! if (AutoVacuumingActive() && AutoVacPID == 0)
AutoVacPID = StartAutoVacLauncher();
if (XLogArchivingActive() && PgArchPID == 0)
PgArchPID = pgarch_start();
--- 2423,2429 ----
*/
if (WalWriterPID == 0)
WalWriterPID = StartWalWriter();
! if (!IsBinaryUpgrade && AutoVacuumingActive() && AutoVacPID == 0)
AutoVacPID = StartAutoVacLauncher();
if (XLogArchivingActive() && PgArchPID == 0)
PgArchPID = pgarch_start();
diff --git a/src/backend/tcop/postgres.c b/src/backend/tcop/postgres.c
new file mode 100644
index 59b7666..a07661f
*** a/src/backend/tcop/postgres.c
--- b/src/backend/tcop/postgres.c
*************** process_postgres_switches(int argc, char
*** 3238,3244 ****
* postmaster/postmaster.c (the option sets should not conflict) and with
* the common help() function in main/main.c.
*/
! while ((flag = getopt(argc, argv, "A:B:c:D:d:EeFf:h:ijk:lN:nOo:Pp:r:S:sTt:v:W:-:")) != -1)
{
switch (flag)
{
--- 3238,3244 ----
* postmaster/postmaster.c (the option sets should not conflict) and with
* the common help() function in main/main.c.
*/
! while ((flag = getopt(argc, argv, "A:B:bc:D:d:EeFf:h:ijk:lN:nOo:Pp:r:S:sTt:v:W:-:")) != -1)
{
switch (flag)
{
*************** process_postgres_switches(int argc, char
*** 3250,3255 ****
--- 3250,3260 ----
SetConfigOption("shared_buffers", optarg, ctx, gucsource);
break;
+ case 'b':
+ /* Undocumented flag used for binary upgrades */
+ IsBinaryUpgrade = true;
+ break;
+
case 'D':
if (secure)
userDoption = strdup(optarg);
diff --git a/src/backend/utils/init/globals.c b/src/backend/utils/init/globals.c
new file mode 100644
index 984ffd0..c4c4154
*** a/src/backend/utils/init/globals.c
--- b/src/backend/utils/init/globals.c
*************** pid_t PostmasterPid = 0;
*** 85,90 ****
--- 85,91 ----
*/
bool IsPostmasterEnvironment = false;
bool IsUnderPostmaster = false;
+ bool IsBinaryUpgrade = false;
bool ExitOnAnyError = false;
diff --git a/src/backend/utils/init/postinit.c b/src/backend/utils/init/postinit.c
new file mode 100644
index a4c5d4c..1f6fba5
*** a/src/backend/utils/init/postinit.c
--- b/src/backend/utils/init/postinit.c
*************** InitPostgres(const char *in_dbname, Oid
*** 626,631 ****
--- 626,641 ----
}
/*
+ * Binary upgrades only allowed super-user connections
+ */
+ if (IsBinaryUpgrade && !am_superuser)
+ {
+ ereport(FATAL,
+ (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
+ errmsg("must be superuser to connect in binary upgrade mode")));
+ }
+
+ /*
* The last few connections slots are reserved for superusers. Although
* replication connections currently require superuser privileges, we
* don't allow them to consume the reserved slots, which are intended for
diff --git a/src/include/catalog/catversion.h b/src/include/catalog/catversion.h
new file mode 100644
index 53c684a..22926b0
*** a/src/include/catalog/catversion.h
--- b/src/include/catalog/catversion.h
***************
*** 53,58 ****
*/
/* yyyymmddN */
! #define CATALOG_VERSION_NO 201104181
#endif
--- 53,58 ----
*/
/* yyyymmddN */
! #define CATALOG_VERSION_NO 201104221
#endif
diff --git a/src/include/miscadmin.h b/src/include/miscadmin.h
new file mode 100644
index aa8cce5..9d19417
*** a/src/include/miscadmin.h
--- b/src/include/miscadmin.h
*************** do { \
*** 124,129 ****
--- 124,130 ----
extern pid_t PostmasterPid;
extern bool IsPostmasterEnvironment;
extern PGDLLIMPORT bool IsUnderPostmaster;
+ extern bool IsBinaryUpgrade;
extern bool ExitOnAnyError;
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