/*
- * Copyright (C) 2008-2009 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2008-2010 Andre Noll <maan@systemlinux.org>
*
* Licensed under the GPL v2. For licencing details see COPYING.
*/
DEFINE_DSS_ERRLIST;
+static const char const *hook_status_description[] = {HOOK_STATUS_ARRAY};
+/* may be called with ds == NULL. */
+static int disk_space_low(struct disk_space *ds)
+{
+ struct disk_space ds_struct;
+
+ if (!ds) {
+ int ret = get_disk_space(".", &ds_struct);
+ if (ret < 0)
+ return ret;
+ ds = &ds_struct;
+ }
+ if (conf.min_free_mb_arg)
+ if (ds->free_mb < conf.min_free_mb_arg)
+ return 1;
+ if (conf.min_free_percent_arg)
+ if (ds->percent_free < conf.min_free_percent_arg)
+ return 1;
+ if (conf.min_free_percent_inodes_arg)
+ if (ds->percent_free_inodes < conf.min_free_percent_inodes_arg)
+ return 1;
+ return 0;
+}
+
+static void dump_dss_config(const char *msg)
+{
+ const char dash[] = "-----------------------------";
+ int ret;
+ FILE *log = logfile? logfile : stderr;
+ struct disk_space ds;
+ int64_t now = get_current_time();
+
+ if (conf.loglevel_arg > INFO)
+ return;
+
+ fprintf(log, "%s <%s config> %s\n", dash, msg, dash);
+ fprintf(log, "\n*** disk space ***\n\n");
+ ret = get_disk_space(".", &ds);
+ if (ret >= 0) {
+ DSS_INFO_LOG("disk space low: %s\n", disk_space_low(&ds)?
+ "yes" : "no");
+ log_disk_space(&ds);
+ } else
+ DSS_ERROR_LOG("can not get free disk space: %s\n",
+ dss_strerror(-ret));
+
+ /* we continue on errors from get_disk_space */
+
+ fprintf(log, "\n*** command line and config file options ***\n\n");
+ cmdline_parser_dump(log, &conf);
+ fprintf(log, "\n*** internal state ***\n\n");
+ fprintf(log,
+ "pid: %d\n"
+ "logile: %s\n"
+ "snapshot_currently_being_removed: %s\n"
+ "path_to_last_complete_snapshot: %s\n"
+ "reference_snapshot: %s\n"
+ "snapshot_creation_status: %s\n"
+ "snapshot_removal_status: %s\n"
+ ,
+ (int) getpid(),
+ logfile? conf.logfile_arg : "stderr",
+ snapshot_currently_being_removed?
+ snapshot_currently_being_removed->name : "(none)",
+ path_to_last_complete_snapshot?
+ path_to_last_complete_snapshot : "(none)",
+ name_of_reference_snapshot?
+ name_of_reference_snapshot : "(none)",
+ hook_status_description[snapshot_creation_status],
+ hook_status_description[snapshot_removal_status]
+ );
+ if (create_pid != 0)
+ fprintf(log,
+ "create_pid: %" PRId32 "\n"
+ "create process is %sstopped\n"
+ ,
+ create_pid,
+ create_process_stopped? "" : "not "
+ );
+ if (remove_pid != 0)
+ fprintf(log, "remove_pid: %" PRId32 "\n", remove_pid);
+ if (next_snapshot_time != 0)
+ fprintf(log, "next snapshot due in %" PRId64 " seconds\n",
+ next_snapshot_time - now);
+ if (current_snapshot_creation_time != 0)
+ fprintf(log, "current_snapshot_creation_time: %"
+ PRId64 " (%" PRId64 " seconds ago)\n",
+ current_snapshot_creation_time,
+ now - current_snapshot_creation_time
+ );
+ if (next_removal_check.tv_sec != 0) {
+ fprintf(log, "next removal check: %llu (%llu seconds ago)\n",
+ (long long unsigned)next_removal_check.tv_sec,
+ now - (long long unsigned)next_removal_check.tv_sec
+ );
+
+ }
+ fprintf(log, "%s </%s config> %s\n", dash, msg, dash);
+}
/* a litte cpp magic helps to DRY */
#define COMMANDS \
va_end(argp);
}
-static int disk_space_low(void)
-{
- struct disk_space ds;
- int ret = get_disk_space(".", &ds);
-
- if (ret < 0)
- return ret;
- if (conf.min_free_mb_arg)
- if (ds.free_mb < conf.min_free_mb_arg)
- return 1;
- if (conf.min_free_percent_arg)
- if (ds.percent_free < conf.min_free_percent_arg)
- return 1;
- if (conf.min_free_percent_inodes_arg)
- if (ds.percent_free_inodes < conf.min_free_percent_inodes_arg)
- return 1;
- return 0;
-}
-
static void dss_get_snapshot_list(struct snapshot_list *sl)
{
get_snapshot_list(sl, conf.unit_interval_arg, conf.num_intervals_arg);
assert(snapshot_creation_status == HS_READY);
/* make sure that the next snapshot time will be recomputed */
invalidate_next_snapshot_time();
- if (!conf.pre_create_hook_given) {
- snapshot_creation_status = HS_PRE_SUCCESS;
- return 0;
- }
DSS_DEBUG_LOG("executing %s\n", conf.pre_create_hook_arg);
ret = dss_exec_cmdline_pid(&create_pid,
conf.pre_create_hook_arg, fds);
*snapshot_currently_being_removed = *s;
snapshot_currently_being_removed->name = dss_strdup(s->name);
- if (!conf.pre_remove_hook_given) {
- snapshot_removal_status = HS_PRE_SUCCESS;
- return 0;
- }
cmd = make_message("%s %s/%s", conf.pre_remove_hook_arg,
conf.dest_dir_arg, s->name);
DSS_DEBUG_LOG("executing %s\n", cmd);
const char *why;
int low_disk_space;
- ret = disk_space_low();
+ ret = disk_space_low(NULL);
if (ret < 0)
return ret;
low_disk_space = ret;
int ret, fds[3] = {0, 0, 0};
char *cmd;
- if (!conf.post_create_hook_given) {
- create_pid = 0;
- snapshot_creation_status = HS_READY;
- return 0;
- }
cmd = make_message("%s %s/%s", conf.post_create_hook_arg,
conf.dest_dir_arg, path_to_last_complete_snapshot);
DSS_NOTICE_LOG("executing %s\n", cmd);
assert(s);
- if (!conf.post_remove_hook_given) {
- snapshot_removal_status = HS_READY;
- return 0;
- }
cmd = make_message("%s %s/%s", conf.post_remove_hook_arg,
conf.dest_dir_arg, s->name);
DSS_NOTICE_LOG("executing %s\n", cmd);
snapshot_removal_status = HS_READY;
return -E_BAD_EXIT_CODE;
}
- if (conf.post_remove_hook_given)
- snapshot_removal_status = HS_SUCCESS;
- else
- snapshot_removal_status = HS_READY;
+ snapshot_removal_status = HS_SUCCESS;
return 1;
}
return dss_chdir(conf.dest_dir_arg);
}
-static void dump_dss_config(const char *msg)
-{
- if (conf.loglevel_arg > INFO)
- return;
- DSS_INFO_LOG("%s\n", msg);
- cmdline_parser_dump(logfile? logfile : stderr, &conf);
-}
-
static int handle_sighup(void)
{
int ret;
DSS_NOTICE_LOG("SIGHUP, re-reading config\n");
- dump_dss_config("current config");
+ dump_dss_config("old");
ret = parse_config_file(1);
if (ret < 0)
return ret;
- dump_dss_config("new config");
+ dump_dss_config("reloaded");
invalidate_next_snapshot_time();
return change_to_dest_dir();
}
char *argv[] = {conf.exit_hook_arg, dss_strerror(-exit_code), NULL};
pid_t pid;
- if (!conf.exit_hook_given)
- return;
DSS_NOTICE_LOG("executing %s %s\n", argv[0], argv[1]);
dss_exec(&pid, conf.exit_hook_arg, argv, fds);
}
}
if (conf.daemon_given)
daemon_init();
- dump_dss_config("dss configuration");
ret = change_to_dest_dir();
if (ret < 0)
goto out;
+ dump_dss_config("startup");
ret = setup_signal_handling();
if (ret < 0)
goto out;
projects / dss.git / blobdiff