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main: fix hanging replay progress during long-lasting sync

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This commit is contained in:
Thomas Schoebel-Theuer 2020-11-25 13:32:53 +01:00
parent a23536fed4
commit e20800c47c
1 changed files with 18 additions and 3 deletions
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21
kernel/sy_old/mars_main.c
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@ -875,6 +875,7 @@ struct mars_rotate {
int retry_log_from;
int retry_recovery;
int max_sequence;
int flip_round;
int fetch_round;
int fetch_serial;
int fetch_next_serial;
@ -6258,17 +6259,31 @@ static int make_sync(struct mars_dent *dent)
if (do_start && rot->replay_mode && rot->end_pos > rot->start_pos &&
mars_sync_flip_interval >= 8) {
if (!rot->flip_start) {
rot->flip_start = jiffies;
rot->flip_pos = rot->start_pos;
/* Give replay a fair chance to jump in, even when
* multiple logrotates are necessary, or when
* logfiles are damaged, etc.
* Exception: the current logfile cannot be freed
* anyway.
*/
if (!rot->next_relevant_log ||
rot->flip_round++ > 3) {
rot->flip_start = jiffies;
rot->flip_pos = rot->start_pos;
rot->flip_round = 0;
}
do_start = false;
mars_trigger();
} else if ((long long)jiffies - rot->flip_start > mars_sync_flip_interval * HZ &&
rot->sync_brick &&
rot->sync_brick->copy_last > rot->flip_pos) {
do_start = false;
rot->flip_start = jiffies + mars_sync_flip_interval * HZ;
rot->flip_start = 0;
rot->flip_round = 0;
mars_trigger();
}
} else {
rot->flip_start = 0;
rot->flip_round = 0;
}
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