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Cromfs

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important software information
company name:
Joel Yliluoma
license: Freeware
minimum requirements:
functional limitations:
Cromfs description
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.

Limitations:

???? Filesystem is write-once, read-only. It is not possible to append to a previously-created filesystem, nor it is to mount it read-write.
???? Max filesize: 2^64 bytes (16777216 TB), but 256 TB with default settings.
???? Max number of files in a directory: 2^30 (smaller if filenames are longer, but still more than 100000 in almost all cases)
???? Max number of inodes (all files, dirs etc combined): 2^60, but depends on file sizes
???? Max filesystem size: 2^64 bytes (16777216 TB)
???? There are no "." and ".." entries in directories.
???? mkcromfs is slow. You must be patient.
???? The cromfs-driver has a large memory footprint. It is not suitable for very size-constrained systems.
???? Ownerships are not saved.
???? Maximum filename length: 4095 bytes

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.. . Publisher of Cromfs, Author of Cromfs 1.5.3. 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 compressio
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downloads 5
version 1.5.3
size in Kb 840
popularity   
889/1272475
user rating 0/10
our rating 0 Stars
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