Cromfs A compressed read-only filesystem for Linux.
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compressed LZMA compression read-only filesystem compressed filesystem Cromfs

Cromfs Description

A compressed read-only filesystem for Linux. Cromfs is a compressed read-only filesystem for Linux. Cromfs is intended for permanently archiving gigabytes of big files that have a lot of redundancy. It is more aimed at heavy compression than at a light fingerprint. Here are some key features of "Cromfs": · Data, inodes, directories and block lists are stored compressed · Duplicate inodes, files and even duplicate file portions are detected and stored only once · Especially suitable for gigabyte-class archives of thousands of nearly-identical megabyte-class files. · Files are stored in solid blocks, meaning that parts of different files are compressed together for effective compression · Most of inode types recognized by Linux are supported (see comparisons). · The LZMA compression is used. In the general case, LZMA compresses better than gzip and bzip2. · As with usual filesystems, the files on a cromfs volume can be accessed in arbitrary order; the waits to open a specific file are small, despite the files being semisolidly archived. Requirements: · GNU make and gcc-c++ are required to recompile the source code. · The openssl development library is required for MD5 calculation. · The filesystem works under the Fuse user-space filesystem framework. You need to install both the Fuse kernel module and the userspace programs before mounting Cromfs volumes. · You need version fuse version 2.6.0 or newer. (2.5.2 might work.) What's New in This Release: · This release fixes a crashing bug in mkcromfs relating to storing decompressed temporary fblock files.

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