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Add initdb --sync-only option to sync the data directory to durable

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storage.

Have pg_upgrade use it, and enable server options fsync=off and
full_page_writes=off.

Document that users turning fsync from off to on should run initdb
--sync-only.

[ Previous commit was incorrectly applied as a git merge. ]
This commit is contained in:
Bruce Momjian
2012-12-03 22:47:59 -05:00
parent 25d1ed04a2
commit 630cd14426
5 changed files with 47 additions and 5 deletions
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6
contrib/pg_upgrade/pg_upgrade.c
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@ -150,6 +150,12 @@ main(int argc, char **argv)
new_cluster.pgdata);
check_ok();
prep_status("Sync data directory to disk");
exec_prog(UTILITY_LOG_FILE, NULL, true,
"\"%s/initdb\" --sync-only \"%s\"", new_cluster.bindir,
new_cluster.pgdata);
check_ok();
create_script_for_cluster_analyze(&analyze_script_file_name);
create_script_for_old_cluster_deletion(&deletion_script_file_name);