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From: Nikolaus Rath <Nikolaus@rath.org>
To: linux-bcache@vger.kernel.org
Subject: How to use multiple backing devices
Date: Mon, 08 Feb 2016 20:47:10 -0800	[thread overview]
Message-ID: <87oabq8p81.fsf@vostro.rath.org> (raw)

Hello,

If I'm understanding Documentation/bcache.txt correctly, I should be
able to use one SSD to cache multiple spinning disks.

However, I'm at a loss of how to set this up in practice. I believe I
need to do

  make-bcache -B /dev/sda  # spinning rust
  make-bcache -B /dev/sdb  # spinning rust 
  make-bcache -C /dev/sdc  # ssd

and then something like

  echo <CSET-UUID> > /sys/block/bcacheX/bcache/attach


But what do I have to put for X, and what for CSET-UUID? I believe for
at least one of those values I will have two options (because there are
two backing devices).


Thanks,
-Nikolaus

(No Cc on replies please, I'm reading the list)
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             reply	other threads:[~2016-02-09  4:47 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-02-09  4:47 Nikolaus Rath [this message]
2016-02-09  7:38 ` How to use multiple backing devices Kai Krakow
2016-02-09 16:03   ` Nikolaus Rath
2016-02-09 22:15     ` Kai Krakow

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