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From: Alan McKinnon <alan.mckinnon@gmail.com>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] defect management block device
Date: Mon, 24 Mar 2008 22:47:00 +0200	[thread overview]
Message-ID: <200803242247.00116.alan.mckinnon@gmail.com> (raw)
In-Reply-To: <47E7F1A1.8090608@gmail.com>

On Monday 24 March 2008, Eric Martin wrote:
> > Just a thought, maybe you know some aspect of disks that I don't
> > and can see where this would be useful. From where I sit, I can;t
> > see any such use-case.
> >
> >  
>
> While I see what Alan is saying, I'm pretty sure LVM does it.  Device
> Drivers -> Multiple Devices Driver Support -> Bad Block Relocation
> Device Target.  I've never played with it but I assume there's a lot
> of good reading on it.

Which gives me an idea on where such a thing might be useful - RAID

If SMART (or something conceptually similar) detects that a drive might 
be failing and be beyond the range of the drive's ability to cope, it 
could raise an event and move the blocks used to another disk. This 
could give another level of data protection rather than just simply 
relying on multiple copies as current RAID schemes mostly do

-- 
Alan McKinnon
alan dot mckinnon at gmail dot com

--
gentoo-user@lists.gentoo.org mailing list



  reply	other threads:[~2008-03-24 20:48 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-03-24 14:32 [gentoo-user] defect management block device Enrico Weigelt
2008-03-24 15:58 ` Alan McKinnon
2008-03-24 18:23   ` Eric Martin
2008-03-24 20:47     ` Alan McKinnon [this message]
2008-03-25  1:48       ` Enrico Weigelt
2008-03-25  8:56         ` Alan McKinnon

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