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pg_upgrade: start/stop new server after pg_resetwal

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When commit 0f33a719fdbb5d8c43839ea0d2c90cd03e2af2d2 removed the
instructions to start/stop the new cluster before running rsync, it was
now possible for pg_resetwal/pg_resetxlog to leave the final WAL record
at wal_level=minimum, preventing upgraded standby servers from
reconnecting.

This patch fixes that by having pg_upgrade unconditionally start/stop
the new cluster after pg_resetwal/pg_resetxlog has run.

Backpatch through 9.2 since, though the instructions were added in PG
9.5, they worked all the way back to 9.2.

Discussion: https://postgr.es/m/20170620171844.GC24975@momjian.us

Backpatch-through: 9.2
This commit is contained in:
Bruce Momjian 2017-06-20 13:20:02 -04:00
parent 20f67e7a29
commit a0e8548811
3 changed files with 13 additions and 10 deletions
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19
contrib/pg_upgrade/check.c
View File

@ -204,13 +204,19 @@ report_clusters_compatible(void)
void
issue_warnings(char *sequence_script_file_name)
issue_warnings_and_set_wal_level(char *sequence_script_file_name)
{
/*
* We unconditionally start/stop the new server because pg_resetwal -o
* set wal_level to 'minimum'. If the user is upgrading standby
* servers using the rsync instructions, they will need pg_upgrade
* to write its final WAL record with the proper wal_level.
*/
start_postmaster(&new_cluster, true);
/* old = PG 8.3 warnings? */
if (GET_MAJOR_VERSION(old_cluster.major_version) <= 803)
{
start_postmaster(&new_cluster, true);
/* restore proper sequence values using file created from old server */
if (sequence_script_file_name)
{
@ -226,16 +232,13 @@ issue_warnings(char *sequence_script_file_name)
old_8_3_rebuild_tsvector_tables(&new_cluster, false);
old_8_3_invalidate_hash_gin_indexes(&new_cluster, false);
old_8_3_invalidate_bpchar_pattern_ops_indexes(&new_cluster, false);
stop_postmaster(false);
}
/* Create dummy large object permissions for old < PG 9.0? */
if (GET_MAJOR_VERSION(old_cluster.major_version) <= 804)
{
start_postmaster(&new_cluster, true);
new_9_0_populate_pg_largeobject_metadata(&new_cluster, false);
stop_postmaster(false);
}
stop_postmaster(false);
}

2
contrib/pg_upgrade/pg_upgrade.c
View File

@ -167,7 +167,7 @@ main(int argc, char **argv)
create_script_for_cluster_analyze(&analyze_script_file_name);
create_script_for_old_cluster_deletion(&deletion_script_file_name);
issue_warnings(sequence_script_file_name);
issue_warnings_and_set_wal_level(sequence_script_file_name);
pg_log(PG_REPORT, "\nUpgrade Complete\n");
pg_log(PG_REPORT, "----------------\n");

2
contrib/pg_upgrade/pg_upgrade.h
View File

@ -323,7 +323,7 @@ void check_and_dump_old_cluster(bool live_check,
char **sequence_script_file_name);
void check_new_cluster(void);
void report_clusters_compatible(void);
void issue_warnings(char *sequence_script_file_name);
void issue_warnings_and_set_wal_level(char *sequence_script_file_name);
void output_completion_banner(char *analyze_script_file_name,
char *deletion_script_file_name);
void check_cluster_versions(void);