All of lore.kernel.org
 help / color / mirror / Atom feed
From: Kent Overstreet <kmo-PEzghdH756F8UrSeD/g0lQ@public.gmane.org>
To: Adam Brenner <aebrenne-sXc7qaQca9o@public.gmane.org>,
	g2p.code-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
Cc: linux-bcache-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: Converting existing partition to bcache backing device without loss of data
Date: Thu, 8 Aug 2013 17:36:57 -0700	[thread overview]
Message-ID: <20130809003657.GF15409@kmo-pixel> (raw)
In-Reply-To: <CAO9TOLddUrQCSchv_2-Xf=xjp_AOfN+NyePMPfiQYwqA+gx4ew-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>

On Thu, Aug 08, 2013 at 09:27:33AM -0700, Adam Brenner wrote:
> Howdy,
> 
> I am in the process of testing bcache on our HPC cluster to act as
> cache for our gluster storage (~750TB).
> 
> I notice that during the setup process on our test cluster, our
> backing device (where all our data is stored) will need to be
> formatted in order to support bcache.
> 
> Does a way exist so we do not have to format our backing device? Or is
> working being done to support this?

Unfortunately, there's no general purpose way - the faq explains why (I
just fixed the wiki so it's there again :)

http://bcache.evilpiepirate.org/FAQ/

However, Gabriel de Perthuis has a tool to do in place conversion - I
can't remember if it was limited to lvm devices or not - Gabriel, what
was the link to that again? I should stick a link to it in the wiki or
give you an account on it so you can.

  parent reply	other threads:[~2013-08-09  0:36 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-08-08 16:27 Converting existing partition to bcache backing device without loss of data Adam Brenner
     [not found] ` <CAO9TOLddUrQCSchv_2-Xf=xjp_AOfN+NyePMPfiQYwqA+gx4ew-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-08-09  0:29   ` Jason Warr
2013-08-09  0:36   ` Kent Overstreet [this message]
2013-08-09  1:00     ` Gabriel de Perthuis

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20130809003657.GF15409@kmo-pixel \
    --to=kmo-pezghdh756f8ursed/g0lq@public.gmane.org \
    --cc=aebrenne-sXc7qaQca9o@public.gmane.org \
    --cc=g2p.code-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org \
    --cc=linux-bcache-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.