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 ?
-- 
This message posted from opensolaris.org
_______________________________________________
zfs-discuss mailing list
zfs-discuss@opensolaris.org
http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Reply via email to