From: Ben Collins <bcollins@debian.org>
To: James Bottomley <James.Bottomley@steeleye.com>,
SCSI Mailing List <linux-scsi@vger.kernel.org>
Subject: Re: FWD: [BK PATCH] SCSI host num allocation improvement
Date: Thu, 26 Feb 2004 20:04:11 -0500 [thread overview]
Message-ID: <20040227010411.GB819@phunnypharm.org> (raw)
In-Reply-To: <20040227005601.GA6127@one-eyed-alien.net>
On Thu, Feb 26, 2004 at 04:56:01PM -0800, Matthew Dharm wrote:
> My only concern with something like this is the userspace race problem.
> i.e the following sequence of events:
>
> (1) User uses cdrecord -scanbus to locate their device (host:bus:dev:lun)
> (2) HBA is disconnected
> (3) New HBA is added
> (4) User issues command to host:bus:dev:lun, and addresses the wrong device
>
> While the current system doesn't prevent this, it makes it a much more
> difficult situation to happen.
Surely the user would have to have known that one device was
disconnected and another connected. Same thing could already be said for
the scsi device allocation (sda, sdb, and sg0, sg1, sg2, etc...).
--
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next prev parent reply other threads:[~2004-02-27 1:04 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-02-27 0:40 FWD: [BK PATCH] SCSI host num allocation improvement James Bottomley
2004-02-27 0:56 ` Matthew Dharm
2004-02-27 1:04 ` Ben Collins [this message]
2004-02-27 7:56 ` Arjan van de Ven
2004-02-27 12:30 ` Ben Collins
2004-02-27 12:39 ` Matthew Wilcox
2004-02-27 12:43 ` Ben Collins
2004-02-27 12:48 ` Christoph Hellwig
2004-02-27 12:48 ` Christoph Hellwig
2004-02-27 13:04 ` Ben Collins
2004-02-27 16:49 ` Mike Anderson
2004-02-27 17:00 ` Ben Collins
2004-02-27 21:26 ` Mike Anderson
2004-02-27 15:08 ` James Bottomley
2004-02-27 15:15 ` Ben Collins
2004-02-27 15:29 ` James Bottomley
2004-02-27 15:32 ` Ben Collins
2004-02-27 16:37 ` James Bottomley
2004-02-27 16:39 ` Ben Collins
-- strict thread matches above, loose matches on Subject: below --
2004-02-27 13:25 David.Egolf
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