From: Marc MERLIN <marc@merlins.org>
To: John Stoffel <john@stoffel.org>
Cc: Jes Sorensen <Jes.Sorensen@redhat.com>,
Mikael Abrahamsson <swmike@swm.pp.se>,
linux-raid@vger.kernel.org
Subject: Re: md raid5 on top of dmcrypt, or dmcrypt on top of md raid5?
Date: Sun, 21 Feb 2016 16:44:36 -0800 [thread overview]
Message-ID: <20160222004436.GH5512@merlins.org> (raw)
In-Reply-To: <22206.14606.181359.676881@quad.stoffel.home>
On Fri, Feb 12, 2016 at 02:57:02PM -0500, John Stoffel wrote:
>
> Marc,
>
> Did you look into lvcache instead of bcache? The problem with bcache
> is that you can't (as I understand it) remove it from a live volume,
> while you can with lvache.
I've used LVM2 in the past, and I'm not a big fan of the extra layers
(and back then clear slowdowns).
To be honest, I won't be needing to remove a cache from a volume while
it's running, so that's not too much a concern for me.
I did a bit of reading on one vs the other, and dmcache seemed to have
more users behind it and been around longer, so I went with that.
Marc
--
"A mouse is a device used to point at the xterm you want to type in" - A.S.R.
Microsoft is to operating systems ....
.... what McDonalds is to gourmet cooking
Home page: http://marc.merlins.org/ | PGP 1024R/763BE901
prev parent reply other threads:[~2016-02-22 0:44 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-11 16:29 md raid5 on top of dmcrypt, or dmcrypt on top of md raid5? Marc MERLIN
2016-02-11 17:13 ` Andreas Klauer
2016-02-11 17:40 ` Marc MERLIN
2016-02-12 9:30 ` Mikael Abrahamsson
2016-02-12 14:34 ` Jes Sorensen
2016-02-12 19:07 ` Marc MERLIN
2016-02-12 19:57 ` John Stoffel
2016-02-22 0:44 ` Marc MERLIN [this message]
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