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In pg_upgrade, only lock the old cluster if link mode is used, and do it

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right after we restore the schema (a common failure point), and right
before we do the link operation.

Per suggesgtions from Robert and ^!C^!^@lvaro
This commit is contained in:
Bruce Momjian
2012-03-05 21:19:54 -05:00
parent 6b289942bf
commit 2127aac6ef
5 changed files with 37 additions and 35 deletions
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20
contrib/pg_upgrade/pg_upgrade.c
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@@ -43,7 +43,6 @@
#include <langinfo.h>
#endif
static void disable_old_cluster(void);
static void prepare_new_cluster(void);
static void prepare_new_databases(void);
static void create_new_objects(void);
@@ -87,7 +86,6 @@ main(int argc, char **argv)
pg_log(PG_REPORT, "\nPerforming Upgrade\n");
pg_log(PG_REPORT, "------------------\n");
disable_old_cluster();
prepare_new_cluster();
stop_postmaster(false);
@@ -109,6 +107,16 @@ main(int argc, char **argv)
stop_postmaster(false);
/*
* Most failures happen in create_new_objects(), which has
* completed at this point. We do this here because it is just
* before linking, which will link the old and new cluster data
* files, preventing the old cluster from being safely started
* once the new cluster is started.
*/
if (user_opts.transfer_mode == TRANSFER_MODE_LINK)
disable_old_cluster();
transfer_all_new_dbs(&old_cluster.dbarr, &new_cluster.dbarr,
old_cluster.pgdata, new_cluster.pgdata);
@@ -176,14 +184,6 @@ setup(char *argv0, bool live_check)
}
static void
disable_old_cluster(void)
{
/* rename pg_control so old server cannot be accidentally started */
rename_old_pg_control();
}
static void
prepare_new_cluster(void)
{