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pg_upgrade: abstract out copying of files from old cluster to new 

Currently only pg_clog is copied, but some other directories could need
the same treatment as well, so create a subroutine to do it.

Extracted from my (somewhat larger) FOR KEY SHARE patch.
This commit is contained in:
Alvaro Herrera 2012-07-05 11:38:42 -04:00
parent 3644a63984
commit 666d494d19
1 changed files with 23 additions and 12 deletions
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35
contrib/pg_upgrade/pg_upgrade.c
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@ -311,23 +311,26 @@ create_new_objects(void)
uninstall_support_functions_from_new_cluster();
}
/*
* Delete the given subdirectory contents from the new cluster, and copy the
* files from the old cluster into it.
*/
static void
copy_clog_xlog_xid(void)
copy_subdir_files(char *subdir)
{
char old_clog_path[MAXPGPATH];
char new_clog_path[MAXPGPATH];
char old_path[MAXPGPATH];
char new_path[MAXPGPATH];
/* copy old commit logs to new data dir */
prep_status("Deleting new commit clogs");
prep_status("Deleting files from new %s", subdir);
snprintf(old_clog_path, sizeof(old_clog_path), "%s/pg_clog", old_cluster.pgdata);
snprintf(new_clog_path, sizeof(new_clog_path), "%s/pg_clog", new_cluster.pgdata);
if (!rmtree(new_clog_path, true))
pg_log(PG_FATAL, "could not delete directory \"%s\"\n", new_clog_path);
snprintf(old_path, sizeof(old_path), "%s/%s", old_cluster.pgdata, subdir);
snprintf(new_path, sizeof(new_path), "%s/%s", new_cluster.pgdata, subdir);
if (!rmtree(new_path, true))
pg_log(PG_FATAL, "could not delete directory \"%s\"\n", new_path);
check_ok();
prep_status("Copying old commit clogs to new server");
prep_status("Copying old %s to new server", subdir);
exec_prog(true, false, UTILITY_LOG_FILE,
#ifndef WIN32
SYSTEMQUOTE "%s \"%s\" \"%s\" >> \"%s\" 2>&1" SYSTEMQUOTE,
@ -337,8 +340,16 @@ copy_clog_xlog_xid(void)
SYSTEMQUOTE "%s \"%s\" \"%s\\\" >> \"%s\" 2>&1" SYSTEMQUOTE,
"xcopy /e /y /q /r",
#endif
old_clog_path, new_clog_path, UTILITY_LOG_FILE);
old_path, new_path, UTILITY_LOG_FILE);
check_ok();
}
static void
copy_clog_xlog_xid(void)
{
/* copy old commit logs to new data dir */
copy_subdir_files("pg_clog");
/* set the next transaction id of the new cluster */
prep_status("Setting next transaction ID for new cluster");