From: Roman Mamedov <roman@rm.pp.ru>
To: Leslie Rhorer <lrhorer@satx.rr.com>
Cc: linux-raid@vger.kernel.org
Subject: Re: Changing Chunk Size on Array
Date: Sun, 18 Jul 2010 03:30:47 +0600 [thread overview]
Message-ID: <20100718033047.2ee80eac@natsu> (raw)
In-Reply-To: <CC.8D.04655.49D124C4@cdptpa-omtalb.mail.rr.com>
[-- Attachment #1: Type: text/plain, Size: 953 bytes --]
On Sat, 17 Jul 2010 16:15:55 -0500
"Leslie Rhorer" <lrhorer@satx.rr.com> wrote:
>
> I'm thinking about changing the chunk size on one of my arrays in
> order to potentially improve performance. The man page rather suggests -c
> is a vlaid option under Grow mode, although it doesn't specifically say
> mdadm supports it under --grow. Is it indeed supported under mdadm 2.6.7.2
> and kernel 2.6.26-2? Assuming so, I would like to know a bit more about the
> change before issuing the command. Speficialy, what are the details of the
> process? Does the entire (RAID 6) array have to be re-written, such as is
> the case with adding a drive to the array? Does the recovery start
> immediately? Can it be interrupted and then continue at a later time?
Out of curiosity, which chunk size do you have, and which you want to change
it to, and do you expect the new size to be faster based on any tests?
--
With respect,
Roman
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 198 bytes --]
next prev parent reply other threads:[~2010-07-17 21:30 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-17 21:15 Changing Chunk Size on Array Leslie Rhorer
2010-07-17 21:30 ` Roman Mamedov [this message]
2010-07-17 21:45 ` Leslie Rhorer
2010-07-19 23:49 ` Neil Brown
2010-07-20 0:17 ` Konstantin Svist
2010-07-21 5:52 ` Leslie Rhorer
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=20100718033047.2ee80eac@natsu \
--to=roman@rm.pp.ru \
--cc=linux-raid@vger.kernel.org \
--cc=lrhorer@satx.rr.com \
/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).