static void setup(char *argv0, bool live_check) { char exec_path[MAXPGPATH]; /* full path to my executable */ /* * make sure the user has a clean environment, otherwise, we may confuse * libpq when we connect to one (or both) of the servers. */ check_pghost_envvar(); verify_directories(); /* no postmasters should be running */ if (!live_check && is_server_running(old_cluster.pgdata)) pg_log(PG_FATAL, "There seems to be a postmaster servicing the old cluster.\n" "Please shutdown that postmaster and try again.\n"); /* same goes for the new postmaster */ if (is_server_running(new_cluster.pgdata)) pg_log(PG_FATAL, "There seems to be a postmaster servicing the new cluster.\n" "Please shutdown that postmaster and try again.\n"); /* get path to pg_upgrade executable */ if (find_my_exec(argv0, exec_path) < 0) pg_log(PG_FATAL, "Could not get pathname to pg_upgrade: %s\n", getErrorText(errno)); /* Trim off program name and keep just path */ *last_dir_separator(exec_path) = '\0'; canonicalize_path(exec_path); os_info.exec_path = pg_strdup(exec_path); }
static void setup(char *argv0, bool *live_check) { char exec_path[MAXPGPATH]; /* full path to my executable */ /* * make sure the user has a clean environment, otherwise, we may confuse * libpq when we connect to one (or both) of the servers. */ check_pghost_envvar(); verify_directories(); /* no postmasters should be running, except for a live check */ if (pid_lock_file_exists(old_cluster.pgdata)) { /* * If we have a postmaster.pid file, try to start the server. If it * starts, the pid file was stale, so stop the server. If it doesn't * start, assume the server is running. If the pid file is left over * from a server crash, this also allows any committed transactions * stored in the WAL to be replayed so they are not lost, because WAL * files are not transferred from old to new servers. We later check * for a clean shutdown. */ if (start_postmaster(&old_cluster, false)) stop_postmaster(false); else { if (!user_opts.check) pg_fatal("There seems to be a postmaster servicing the old cluster.\n" "Please shutdown that postmaster and try again.\n"); else *live_check = true; } } /* same goes for the new postmaster */ if (pid_lock_file_exists(new_cluster.pgdata)) { if (start_postmaster(&new_cluster, false)) stop_postmaster(false); else pg_fatal("There seems to be a postmaster servicing the new cluster.\n" "Please shutdown that postmaster and try again.\n"); } /* get path to pg_upgrade executable */ if (find_my_exec(argv0, exec_path) < 0) pg_fatal("%s: could not find own program executable\n", argv0); /* Trim off program name and keep just path */ *last_dir_separator(exec_path) = '\0'; canonicalize_path(exec_path); os_info.exec_path = pg_strdup(exec_path); }