From owner-freebsd-fs@FreeBSD.ORG  Thu Jul  4 16:05:45 2013
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Date: Thu, 4 Jul 2013 20:05:43 +0400 (MSK)
From: Dmitry Morozovsky <marck@rinet.ru>
To: Volodymyr Kostyrko <c.kworr@gmail.com>
Subject: Re: ZFS default compression algo for contemporary FreeBSD versions
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On Thu, 4 Jul 2013, Volodymyr Kostyrko wrote:

> > > > is it sane to just set 'zfs compression=on dataset' to achieve best algo
> > > > on
> > > > fresh FreeBSD systems (-current and/or stable/9)?
> > > 
> > > No and this is not safe AFAIK. Default compression is still lzjb and
> > > bootloader can't boot oof datasets compressed with lzjb. However on
> > > stable/9
> > > you can simply set zfs compression=lz4 pool and everything would work fine
> > > if
> > > you updated the boot loader.
> > 
> > I did not intend to compress root/boot datasets (and there is no much sense
> > in
> > this AFAICS);
> > 
> > the second (and actually more important) my question is -- is lz4 in general
> > better than lzjb?
> 
> Yes. Much better in terms of speed.

Then, next logical step semms to me is to make lz4 the default ;-P


-- 
Sincerely,
D.Marck                                     [DM5020, MCK-RIPE, DM3-RIPN]
[ FreeBSD committer:                                 marck@FreeBSD.org ]
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*** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck@rinet.ru ***
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