Extent data can be optionally stored in zlib and LZO formats (per the [on-disk format](https://btrfs.wiki.kernel.org/index.php/On-disk_Format#EXTENT_DATA_.286c.29). Implement support for those formats: - zlib: the [`compress/zlib`](https://golang.org/pkg/compress/zlib/) already supports this - LZO: A native Go implementation is here: https://github.com/rasky/go-lzo, although not updated in the last 3 years
Extent data can be optionally stored in zlib and LZO formats (per the on-disk format.
Implement support for those formats:
compress/zlibalready supports this