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the third piece of bug 969 fixing

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when we write out our stability info, detect relays that have slipped
through the cracks. log about them and correct the problem.

if we continue to see a lot of these over time, it means there's another
spot where relays fall out of the routerlist without being marked as
unreachable.
This commit is contained in:
Roger Dingledine 2009-06-20 05:25:14 -04:00 committed by Nick Mathewson
parent bdca5476da
commit e7bc189f7c
3 changed files with 24 additions and 7 deletions
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9
src/or/main.c
View File

@ -903,7 +903,7 @@ run_scheduled_events(time_t now)
time_to_downrate_stability = rep_hist_downrate_old_runs(now);
if (authdir_mode_tests_reachability(options)) {
if (time_to_save_stability < now) {
if (time_to_save_stability && rep_hist_record_mtbf_data()<0) {
if (time_to_save_stability && rep_hist_record_mtbf_data(now, 1)<0) {
log_warn(LD_GENERAL, "Couldn't store mtbf data.");
}
#define SAVE_STABILITY_INTERVAL (30*60)
@ -1955,14 +1955,15 @@ tor_cleanup(void)
/* Remove our pid file. We don't care if there was an error when we
* unlink, nothing we could do about it anyways. */
if (options->command == CMD_RUN_TOR) {
time_t now = time(NULL);
if (options->PidFile)
unlink(options->PidFile);
if (accounting_is_enabled(options))
accounting_record_bandwidth_usage(time(NULL), get_or_state());
accounting_record_bandwidth_usage(now, get_or_state());
or_state_mark_dirty(get_or_state(), 0); /* force an immediate save. */
or_state_save(time(NULL));
or_state_save(now);
if (authdir_mode_tests_reachability(options))
rep_hist_record_mtbf_data();
rep_hist_record_mtbf_data(now, 0);
}
#ifdef USE_DMALLOC
dmalloc_log_stats();

2
src/or/or.h
View File

@ -3970,7 +3970,7 @@ void rep_history_clean(time_t before);
void rep_hist_note_router_reachable(const char *id, time_t when);
void rep_hist_note_router_unreachable(const char *id, time_t when);
int rep_hist_record_mtbf_data(void);
int rep_hist_record_mtbf_data(time_t now, int missing_means_down);
int rep_hist_load_mtbf_data(time_t now);
time_t rep_hist_downrate_old_runs(time_t now);

20
src/or/rephist.c
View File

@ -683,9 +683,13 @@ rep_history_clean(time_t before)
}
}
/** Write MTBF data to disk. Returns 0 on success, negative on failure. */
/** Write MTBF data to disk. Return 0 on success, negative on failure.
*
* If <b>missing_means_down</b>, then if we're about to write an entry
* that is still considered up but isn't in our routerlist, consider it
* to be down. */
int
rep_hist_record_mtbf_data(void)
rep_hist_record_mtbf_data(time_t now, int missing_means_down)
{
char time_buf[ISO_TIME_LEN+1];
@ -745,6 +749,18 @@ rep_hist_record_mtbf_data(void)
hist = (or_history_t*) or_history_p;
base16_encode(dbuf, sizeof(dbuf), digest, DIGEST_LEN);
if (missing_means_down && hist->start_of_run &&
!router_get_by_digest(digest)) {
/* We think this relay is running, but it's not listed in our
* routerlist. Somehow it fell out without telling us it went
* down. Complain and also correct it. */
log_info(LD_HIST,
"Relay '%s' is listed as up in rephist, but it's not in "
"our routerlist. Correcting.", dbuf);
rep_hist_note_router_unreachable(digest, now);
}
PRINTF((f, "R %s\n", dbuf));
if (hist->start_of_run > 0) {
format_iso_time(time_buf, hist->start_of_run);