linux-kernel - Re: What still uses the block layer?

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Date:	Mon, 15 Oct 2007 14:29:45 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Theodore Tso <tytso@....edu>
Cc:	Rob Landley <rob@...dley.net>,
	James Bottomley <James.Bottomley@...eleye.com>,
	Matthew Wilcox <matthew@....cx>, linux-kernel@...r.kernel.org,
	linux-scsi@...r.kernel.org, Jens Axboe <axboe@...e.de>,
	Suparna Bhattacharya <suparna@...ibm.com>,
	Nick Piggin <piggin@...erone.com.au>
Subject: Re: What still uses the block layer?

> You can pull a Model and Serial number via hdparm -i, but it's not as
> easy to manipulate as a fixed-length MAC address.  That's why people
> tend to use filesystem UUID's.   

ATA8 at the moment looks set to add a true "MAC" or "WWN" type identifier
to each device.. Right now model/serial is not always unique.

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