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Date:      Thu, 4 Jul 2013 05:59:24 -0700
From:      Jeremy Chadwick <jdc@koitsu.org>
To:        Dmitry Morozovsky <marck@rinet.ru>
Cc:        freebsd-fs@FreeBSD.org, avg@FreeBSD.org
Subject:   Re: ZFS default compression algo for contemporary FreeBSD versions
Message-ID:  <20130704125924.GA89675@icarus.home.lan>
In-Reply-To: <alpine.BSF.2.00.1307041620420.2446@woozle.rinet.ru>
References:  <alpine.BSF.2.00.1307041620420.2446@woozle.rinet.ru>

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On Thu, Jul 04, 2013 at 04:22:58PM +0400, Dmitry Morozovsky wrote:
> Collegues,
> 
> is it sane to just set 'zfs compression=on dataset' to achieve best algo on 
> fresh FreeBSD systems (-current and/or stable/9)?
> 
> The manual page is a bit uncertain about this...

The man page on stable/9, for me, says clearly:

Setting compression to on uses the lzjb compression algorithm.

This is as of r251935.

Your catman pages may be out of date.  I deal with this problem per a
recommendation of dougb back in the day: "rm -fr /usr/share/man/*" right
before doing "make installworld".  I've just gotten in the habit of
remembering to do it every time.

Otherwise render what's in /usr/src yourself:

nroff -Tman -man /usr/src/cddl/contrib/opensolaris/cmd/zfs/zfs.8 | less

-- 
| Jeremy Chadwick                                   jdc@koitsu.org |
| UNIX Systems Administrator                http://jdc.koitsu.org/ |
| Making life hard for others since 1977.             PGP 4BD6C0CB |




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