From: Killian De Volder <killian.de.volder@megasoft.be>
To: linux-bcache@vger.kernel.org
Subject: Re: block size question
Date: Wed, 18 May 2016 17:46:54 +0200 [thread overview]
Message-ID: <573C8E6E.8030008@megasoft.be> (raw)
In-Reply-To: <573C02B3.5010501@net.home>
Done some testing for you:
The -B --block size has to be a a power2 of -C --block size.
(Note: all information is about bcache1 not bcachefs if that is what you are talking about)
Killian De Volder
On 18-05-16 07:50, Vlad wrote:
> Hallo,
>
> What would be the optimal block size in case if physical block sizes
> different for cache and backing devices? Can I use different block sizes
> for cache and backing devices, like:
> make-bcache --block 4k -B /dev/sdc
> make-bcache --block 512 -C /dev/sda
>
> I have a feeling that the block size should be the same and the biggest
> block size should be used, but I'd appreciate any thoughts about that.
>
> Thanks in advance,
> Vlad.
> --
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next prev parent reply other threads:[~2016-05-18 15:46 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-18 5:50 block size question Vlad
2016-05-18 7:11 ` Killian De Volder
2016-05-18 14:14 ` Killian De Volder
2016-05-18 15:46 ` Killian De Volder [this message]
2016-05-18 16:24 ` Vlad
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