by some posting on zfs-fuse mailinglist, i came across "zle"
compression which seems to be part of the dedupe-commit some days ago:
http://hg.genunix.org/onnv-gate.hg/diff/e2081f502306/usr/src/uts/common/fs/zfs/zle.c
--snipp
31 + * Zero-length encoding. This is a fast and simple algorithm to eliminate
32 + * runs of zeroes. Each chunk of compressed data begins with a length
byte, b.
33 + * If b < n (where n is the compression parameter) then the next b
+ 1 bytes
34 + * are literal values. If b >= n then the next (256 - b + 1) bytes
are zero.
--snipp
i`m curious - what does that mean?
does zfs have another compression scheme named "zle" now ?
if yes, why ?
wasn?t zero-length encoding already there and just a "builtin feature"
?
maybe that builtin has now become an option ?
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