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Date:      Thu, 04 Jul 2013 18:57:32 +0300
From:      Volodymyr Kostyrko <c.kworr@gmail.com>
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:  <51D59B6C.5030600@gmail.com>
In-Reply-To: <alpine.BSF.2.00.1307041950400.2446@woozle.rinet.ru>
References:  <alpine.BSF.2.00.1307041620420.2446@woozle.rinet.ru> <51D576E1.6030803@gmail.com> <alpine.BSF.2.00.1307041950400.2446@woozle.rinet.ru>

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04.07.2013 18:51, Dmitry Morozovsky wrote:
> On Thu, 4 Jul 2013, Volodymyr Kostyrko wrote:
>
>> 04.07.2013 15:22, 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)?
>>
>> 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.

-- 
Sphinx of black quartz, judge my vow.



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