EROFS is still working in progress, thus it is not suitable for all productive uses. play at your own risk :) TODO List: - add the missing error handling code (mainly existed in xattr and decompression submodules); - finalize erofs ondisk format design (which means that minor on-disk revisions could happen later); - documentation and detailed technical analysis; - general code review and clean up (including confusing variable names and code snippets); - support larger compressed clustersizes for selection (currently erofs only works as expected with the page-sized compressed cluster configuration, usually 4KB); - support more lossless data compression algorithms in addition to LZ4 algorithms in VLE approach; - data deduplication and other useful features. erofs-mkfs (preview version) binaries for i386 / x86_64 are available at: https://github.com/hsiangkao/erofs_mkfs_binary It is still in progress opening mkfs source code to public, in any case an open-source mkfs will be released in the near future. Code, suggestions, etc, are welcome. Please feel free to ask and send patches, To: linux-erofs mailing list Gao Xiang Chao Yu Cc: (for linux-kernel upstream patches) Greg Kroah-Hartman linux-staging mailing list