DEFAULTSYNC
if (log->sync != DEFAULTSYNC || log->header.magic != MIRROR_MAGIC) {
enum sync sync = DEFAULTSYNC;
if (lc->sync != DEFAULTSYNC) \
lc->sync == DEFAULTSYNC ? 1 : 2, lc->region_size);
lc->sync == DEFAULTSYNC ? 2 : 3, lc->log_dev->name,