From: Paul Clements <paul.clements@steeleye.com>
To: jeff@jab.org
Cc: linux-raid@vger.kernel.org
Subject: Re: does chunksize matter in raid-1?
Date: Sat, 06 Aug 2005 08:44:49 -0400 [thread overview]
Message-ID: <42F4B0C1.1080306@steeleye.com> (raw)
In-Reply-To: <e03b90ae05080521077404ad09@mail.gmail.com>
Jeff Breidenbach wrote:
> Does chunk size matter *at all* for RAID-1?
>
> mdadm --create /dev/md0 --level=1 --chunk=8 /dev/sdc1 /dev/sdd1
> mdadm --create /dev/md0 --level=1 --chunk=128 /dev/sdc1 /dev/sdd1
>
> In my mental model of how RAID works, it can't possibly matter
> what my chunk size is whether I've got 1KB files or 1GB files because
> no striped reading occurs.
>
> Is my mental model wrong?
No, chunk size does not matter for raid1. In fact, some/most? kernels
will print a message to that effect if you specify a chunk size for a
raid1 array.
--
Paul
next prev parent reply other threads:[~2005-08-06 12:44 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-06 4:07 does chunksize matter in raid-1? Jeff Breidenbach
2005-08-06 12:44 ` Paul Clements [this message]
2005-08-06 17:47 ` J. Ryan Earl
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=42F4B0C1.1080306@steeleye.com \
--to=paul.clements@steeleye.com \
--cc=jeff@jab.org \
--cc=linux-raid@vger.kernel.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).