Enum CompactSection 

pub enum CompactSection {
    PreBuilt(Vec<u8>),
    MappedBlocks {
        old_blocks: Vec<u64>,
    },
    Zeros(u64),
}

A section in the virtual compacted image.

Variants

PreBuilt(Vec<u8>)

Pre-built data served from memory (boot sectors, rebuilt metadata, etc.)

MappedBlocks

A contiguous run of mapped blocks from the source.

Each entry in old_blocks is the source block number. The blocks are emitted sequentially in the virtual image — old_blocks[0] comes first, then old_blocks[1], etc. The source byte offset for block b is: source_partition_offset + source_data_start + b * block_size.

Fields

old_blocks: Vec<u64>

For each new block index in this section, the old block number in the source.

Zeros(u64)

Zero-filled region of the given byte length.