Date: Mon, 26 Jun 2006 08:05:36 +0200 From: Alexander Leidinger <Alexander@Leidinger.net> To: "M. Warner Losh" <imp@bsdimp.com> Cc: pjd@freebsd.org, freebsd-arch@freebsd.org Subject: Re: Accessing disks via their serial numbers. Message-ID: <20060626080536.e9nsgj59xc88ks8o@netchild.homeip.net> In-Reply-To: <20060625.174838.2140534929.imp@bsdimp.com> References: <20060624174331.GB2134@garage.freebsd.pl> <20060625.174838.2140534929.imp@bsdimp.com>
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Quoting "M. Warner Losh" <imp@bsdimp.com> (from Sun, 25 Jun 2006 =20 17:48:38 -0600 (MDT)): > In message: <20060624174331.GB2134@garage.freebsd.pl> > Pawel Jakub Dawidek <pjd@freebsd.org> writes: > : I'd like to extend glabel(8) to create providers related to disks based > : on their serial numbers and everntually driver name. > : For example disk ad0 could also be accessed via /dev/disk/ata/3JX0LMGA > : (/dev/disk/<driver>/<serial> or /dev/disk/<serial>). > > /dev/disk/ad/3JX0LMGA or /dev/disk/da/3JX0LMGA is the only thing > you'll be able to do. There's no mapping from the dev_t -> device_t, > so you have no way of knowing what the parent of the disk's dev_t. > All the I/O in the system is done with dev_t's. > > Also, the cam system doesn't hook into the newbus system due to when > it was authored. There's been some resistance to moving the scsi > devices into the device_t tree, like all other storage devices. This > is part of the problem indoing thinging completely generically. Should we add an entry to the ideas list about refactoring CAM to hook =20 into newbus? If yes, could you please write a suitable plain text =20 version? Bye, Alexander. --=20 If voting could change the system, it would be illegal. If not voting could change the system, it would be illegal. http://www.Leidinger.net Alexander @ Leidinger.net: PGP ID =3D B0063FE7 http://www.FreeBSD.org netchild @ FreeBSD.org : PGP ID =3D 72077137
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