Function execute 

pub fn execute(
    opts: &LogOptions,
    writer: &mut dyn Write,
) -> Result<(), IdbError>

Analyze the structure of an InnoDB redo log file.

InnoDB redo logs are organized as a sequence of 512-byte blocks. The first four blocks are reserved: block 0 is the log file header (group ID, start LSN, file number, creator string), blocks 1 and 3 are checkpoint records (checkpoint number, LSN, offset, buffer size, archived LSN), and block 2 is reserved/unused. All remaining blocks are data blocks containing the actual redo log records.

This command reads and displays all three sections. For data blocks, each block’s header is decoded to show the block number, data length, first-record-group offset, checkpoint number, flush flag, and CRC-32C checksum validation status.

With --verbose, the payload bytes of each non-empty data block are scanned for MLOG record type bytes (e.g., MLOG_REC_INSERT, MLOG_UNDO_INSERT, MLOG_WRITE_STRING) and a frequency summary is printed. Use --blocks N to limit output to the first N data blocks, or --no-empty to skip blocks with zero data length.