From: Goswin von Brederlow <goswin-v-b@web.de>
To: Billy Crook <billycrook@gmail.com>
Cc: "Henry, Andrew" <andrew.henry@logica.com>,
"goswin-v-b@web.de" <goswin-v-b@web.de>,
Drew <drew.kay@gmail.com>,
"linux-raid@vger.kernel.org" <linux-raid@vger.kernel.org>
Subject: Re: raid-0 with mdadm vs lvm striping
Date: Thu, 13 Aug 2009 04:09:10 +0200 [thread overview]
Message-ID: <874osc5ut5.fsf@frosties.localdomain> (raw)
In-Reply-To: <a43edf1b0908120900u32226a01w16edc9075282ee9f@mail.gmail.com> (Billy Crook's message of "Wed, 12 Aug 2009 11:00:51 -0500")
Billy Crook <billycrook@gmail.com> writes:
> On Wed, Aug 12, 2009 at 04:14, Henry, Andrew<andrew.henry@logica.com> wrote:
>> That's what my question was: Will raid0 (striping) be faster or easier to manage than lvm striping
>
> LVM striping won't change performance for small files. (That is files,
> smaller than the extent size.) To be fair, RAID-0 striping won't
> accelerate file access for files smaller than the stripe size either.
> However, traditionally, raid0 stripe sizes are much much smaller than
> LVM extent sizes. Both are however adjustable.
That sucks. LVM striping really should have a setting where it stripes
chunks within a PE.
MfG
Goswin
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next prev parent reply other threads:[~2009-08-13 2:09 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-10 7:09 raid-0 with mdadm vs lvm striping Henry, Andrew
2009-08-11 21:35 ` Drew
2009-08-12 6:55 ` Henry, Andrew
2009-08-12 8:41 ` Goswin von Brederlow
2009-08-12 9:14 ` Henry, Andrew
2009-08-12 16:00 ` Billy Crook
2009-08-13 2:09 ` Goswin von Brederlow [this message]
2009-08-13 2:40 ` Guy Watkins
2009-08-17 7:27 ` Goswin von Brederlow
2009-08-13 8:08 ` Keld Jørn Simonsen
2009-08-12 17:47 ` Drew
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