From: Wes Felter <wesley@felter.org>
To: dm-devel@redhat.com
Subject: Re: A simple, generic DM-API, for codecs/transcoders to use?
Date: Mon, 22 Jun 2009 18:13:48 -0500 [thread overview]
Message-ID: <h1p37d$s0t$1@ger.gmane.org> (raw)
In-Reply-To: <49C0B79A.9010601@googlemail.com>
Navid Zamani wrote:
> Hello DM mailing list.
>
> I a have a simple question:
> Is there a way to use the device-mapper to hang an arbitrary program
> in-between a real block device, and the virtual device created by the
> device-mapper?
http://static.danplanet.com/dm-userspace/
> In case you are interested in the reasons: Modern consumer HDDs do not
> have any ECC, but they get less and less reliable.
I don't think this is correct. All disks use ECC; cheap disks just don't
use strong enough ECC. 4K sectors may fix this in the distant future.
> So I decided to put my whole archive on a partititon with software-based
> ECC. And because I could not find something that resembled this, I chose
> to implement it myself.
Honestly I would use RAID + Btrfs instead of software ECC. But if you're
determined to go down this path, you may want to investigate LDPC
instead of RS.
Wes Felter - wesley@felter.org
prev parent reply other threads:[~2009-06-22 23:13 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-18 8:58 A simple, generic DM-API, for codecs/transcoders to use? Navid Zamani
2009-06-22 15:08 ` Konrad Rzeszutek
2009-06-23 5:30 ` Martin K. Petersen
2009-06-22 23:13 ` Wes Felter [this message]
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