From: Janek Kozicki <janek_listy@wp.pl>
To: linux-raid@vger.kernel.org
Subject: Re: Severe slowdown with LVM on RAID, alignment problem? - Autodetect?
Date: Tue, 4 Mar 2008 20:52:48 +0100 [thread overview]
Message-ID: <20080304205248.08b92217@szpak> (raw)
In-Reply-To: <47CB0A9C.7030902@tmr.com>
Hello
I was wondering, that maybe someone from our community, skilled
enough, could submit a patch to LVM which will enable autodetection
of RAID stripes in the underlying device?
We would no longer suffer any slowdowns, then ;-)
If LVM cannot communicate with RAID layer (eg. because it's too
difficult, since /dev/md0 is *only* a block device) - then LVM could
do empirical autodetection by writing data to /dev/md0 (*) and
reading data from /dev/sda3 (*), /dev/sdb3 (*) and comparing it.
(*) those are just an example values, of course. They would be a
command line parameters for that ;-)
best regards
--
Janek Kozicki |
prev parent reply other threads:[~2008-03-04 19:52 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-29 8:12 Severe slowdown with LVM on RAID, alignment problem? Michael Guntsche
2008-02-29 10:37 ` Peter Rabbitson
2008-02-29 10:45 ` Michael Guntsche
2008-03-01 20:45 ` Bill Davidsen
2008-03-01 21:26 ` Michael Guntsche
2008-03-02 20:14 ` Bill Davidsen
2008-03-04 19:52 ` Janek Kozicki [this message]
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