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Subject: Re: how to best segment a big block device in resizeable btrfs
 filesystems?
To: Qu Wenruo <quwenruo.btrfs@gmx.com>, Marc MERLIN <marc@merlins.org>
Cc: Su Yue <suy.fnst@cn.fujitsu.com>, linux-btrfs@vger.kernel.org
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From: Andrei Borzenkov <arvidjaar@gmail.com>
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Date: Tue, 3 Jul 2018 07:23:04 +0300
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03.07.2018 04:37, Qu Wenruo пишет:
> 
> BTW, IMHO the bcache is not really helping for backup system, which is
> more write oriented.
> 

There is new writecache target which may help in this case.