ENTRIES_PER_EXT_SELFTEST_LOG_BLK
block_num = index / ENTRIES_PER_EXT_SELFTEST_LOG_BLK;
index %= ENTRIES_PER_EXT_SELFTEST_LOG_BLK;
ENTRIES_PER_EXT_SELFTEST_LOG_BLK) {
ENTRIES_PER_EXT_SELFTEST_LOG_BLK -
index %= ENTRIES_PER_EXT_SELFTEST_LOG_BLK;