From: Phillip Susi <psusi@cfl.rr.com>
To: Arne Jansen <sensille@gmx.net>
Cc: Thomas Schmidt <Schmidt-T@gmx.de>, linux-btrfs@vger.kernel.org
Subject: Re: [RFC] improve space utilization on off-sized raid devices
Date: Thu, 17 Nov 2011 13:27:41 -0500 [thread overview]
Message-ID: <4EC5521D.1020209@cfl.rr.com> (raw)
In-Reply-To: <4EC5052E.4040709@gmx.net>
On 11/17/2011 7:59 AM, Arne Jansen wrote:
> Right you are. So you want to sacrifice stripe size for space efficiency.
> Why don't you just use RAID1?
> Instead of reducing the stripe size for the majority of writes, I'd prefer
> to allow RAID10 to go down to 2 disks. This should also solve it.
Yes, it appears that btrfs's current idea of raid10 is actually raid0+1,
not raid10. If it were proper raid10, it could use the remaining space
on the 3 larger disks for a raid10 metadata chunk.
prev parent reply other threads:[~2011-11-17 18:27 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-17 0:27 [RFC] improve space utilization on off-sized raid devices Thomas Schmidt
2011-11-17 7:42 ` Arne Jansen
2011-11-17 11:53 ` Thomas Schmidt
2011-11-17 12:59 ` Arne Jansen
2011-11-17 14:06 ` Thomas Schmidt
2011-12-01 8:55 ` Arne Jansen
2012-01-24 17:15 ` THomas Schmidt
2012-01-24 21:01 ` Thomas Schmidt
2011-11-17 18:27 ` Phillip Susi [this message]
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=4EC5521D.1020209@cfl.rr.com \
--to=psusi@cfl.rr.com \
--cc=Schmidt-T@gmx.de \
--cc=linux-btrfs@vger.kernel.org \
--cc=sensille@gmx.net \
/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.