From: David Miller <davem@davemloft.net>
To: James.Bottomley@SteelEye.com
Cc: ltuikov@yahoo.com, jeff@garzik.org, lydianconcepts@gmail.com,
mdr@sgi.com, James.Smart@emulex.com, linux-scsi@vger.kernel.org
Subject: Re: generating a Linux WWN?
Date: Sat, 06 Oct 2007 19:46:25 -0700 (PDT) [thread overview]
Message-ID: <20071006.194625.64817413.davem@davemloft.net> (raw)
In-Reply-To: <1191679870.3338.17.camel@localhost.localdomain>
From: James Bottomley <James.Bottomley@SteelEye.com>
Date: Sat, 06 Oct 2007 09:11:10 -0500
> My problem with auto generated is that it's provably impossible to
> generate globally unique numbers for WWNs without some internal source
> of uniqueness (I know sparcs have this in their serial number, but most
> PCs unfortunately don't).
If you have at least one ethernet NIC, you have at least one
globally unique MAC address, which is 6 bytes of uniqueness to
draw from.
I'm sure there are countless other possibilities.
I think the SAN issue is way overstated. Sure it's real, but
so are SHA conflicts in the kernel GIT repository.
next prev parent reply other threads:[~2007-10-07 2:46 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-27 10:04 generating a Linux WWN? Jeff Garzik
2007-09-27 13:55 ` Michael Reed
2007-09-27 14:04 ` James Smart
2007-09-27 14:16 ` Patrick_Boyd
2007-09-27 14:46 ` Matthew Wilcox
2007-09-27 15:07 ` Michael Reed
2007-09-27 15:12 ` Michael Reed
2007-09-27 23:40 ` Jeff Garzik
2007-09-27 22:48 ` Jeff Garzik
2007-10-01 10:56 ` Andi Kleen
2007-09-27 14:19 ` Jeff Garzik
2007-09-27 14:29 ` Michael Reed
2007-09-27 15:30 ` Douglas Gilbert
2007-09-27 22:32 ` Jeff Garzik
2007-09-27 23:12 ` Jeff Garzik
2007-10-02 23:47 ` Luben Tuikov
2007-10-03 0:35 ` Jeff Garzik
2007-10-03 3:45 ` Luben Tuikov
2007-10-03 4:15 ` Jeff Garzik
2007-10-03 5:12 ` Luben Tuikov
2007-10-03 5:25 ` Jeff Garzik
2007-10-03 5:31 ` Luben Tuikov
2007-10-03 5:45 ` Jeff Garzik
2007-10-03 14:59 ` Douglas Gilbert
2007-10-03 16:16 ` Jeff Garzik
2007-10-03 18:02 ` Matthew Jacob
2007-10-03 18:09 ` Jeff Garzik
2007-10-03 19:44 ` Luben Tuikov
2007-10-03 20:25 ` Jeff Garzik
2007-10-03 22:08 ` Luben Tuikov
2007-10-03 22:17 ` David Miller
2007-10-04 0:11 ` Luben Tuikov
2007-10-04 3:23 ` Matthew Jacob
2007-10-04 3:27 ` Jeff Garzik
2007-10-04 3:33 ` Matthew Wilcox
2007-10-05 22:09 ` James Bottomley
2007-10-05 22:11 ` David Miller
2007-10-05 22:14 ` James Bottomley
2007-10-05 22:17 ` David Miller
2007-10-05 22:41 ` Jeff Garzik
2007-10-05 22:49 ` David Miller
2007-10-05 22:52 ` Jeff Garzik
2007-10-06 14:11 ` James Bottomley
2007-10-06 14:36 ` Jeff Garzik
2007-10-06 15:04 ` James Bottomley
2007-10-06 15:23 ` Jeff Garzik
2007-10-06 15:33 ` James Bottomley
2007-10-06 15:42 ` Jeff Garzik
2007-10-08 18:42 ` Luben Tuikov
2007-10-07 2:48 ` David Miller
2007-10-08 15:41 ` Michael Reed
2007-10-08 18:34 ` Luben Tuikov
2007-10-07 2:46 ` David Miller [this message]
2007-10-08 18:18 ` Luben Tuikov
2007-10-03 5:38 ` Luben Tuikov
2007-10-03 5:47 ` Jeff Garzik
2007-10-03 15:33 ` Michael Reed
2007-10-03 16:02 ` Jeff Garzik
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