From: "Stuart D. Gathman" <stuart@bmsi.com>
To: LVM general discussion and development <linux-lvm@redhat.com>
Subject: Re: [linux-lvm] logical volumes and raid alignment
Date: Sun, 2 May 2010 18:12:25 -0400 (EDT) [thread overview]
Message-ID: <Pine.LNX.4.64.1005021807360.11378@bmsred.bmsi.com> (raw)
In-Reply-To: <4BDDE17F.7090300@strike.wu.ac.at>
On Sun, 2 May 2010, Alexander 'Leo' Bergolth wrote:
> My raid chunk size is 64k and I am using 5 data-bearing discs (raid 5
> with 6 discs), so the raid stripe size should be 64k * 5 = 320k.
>
> But unfortunately the --physicalextentsize must be a power of 2, so I
> cannot use a multiple of 320k as the physical extent size.
>
> What are your experiences with tuning and properly aligning lvm + raid?
> Does anyone know a workaround?
Use 4 data bearing disks. Let #6 be a spare. You're supposed to have
a spare anyway.
--
Stuart D. Gathman <stuart@bmsi.com>
Business Management Systems Inc. Phone: 703 591-0911 Fax: 703 591-6154
"Confutatis maledictis, flammis acribus addictis" - background song for
a Microsoft sponsored "Where do you want to go from here?" commercial.
next prev parent reply other threads:[~2010-05-02 22:12 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-02 20:33 [linux-lvm] logical volumes and raid alignment Alexander 'Leo' Bergolth
2010-05-02 22:12 ` Stuart D. Gathman [this message]
2010-05-03 5:38 ` Luca Berra
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=Pine.LNX.4.64.1005021807360.11378@bmsred.bmsi.com \
--to=stuart@bmsi.com \
--cc=linux-lvm@redhat.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).