Date: Thu, 19 Feb 2004 03:09:31 -0500 (EST) From: Andre Guibert de Bruet <andy@siliconlandmark.com> To: "M. Warner Losh" <imp@bsdimp.com> Cc: current@freebsd.org Subject: Re: Review/Test: Pseudo-device unit number management patch Message-ID: <20040219025604.D76134@alpha.siliconlandmark.com> In-Reply-To: <20040218.063204.74403147.imp@bsdimp.com> References: <200402170846.17399.freebsd-current@webteckies.org> <20040218.063204.74403147.imp@bsdimp.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Wed, 18 Feb 2004, M. Warner Losh wrote: > In message: <39796.1077013415@critter.freebsd.dk> > "Poul-Henning Kamp" <phk@phk.freebsd.dk> writes: > : Current our handing is that if it disappears, it's gone, if it comes > : back it's probably a new one anyway. > > Yes. If the hardware goes away and comes back, it can be very > difficult to know if you have the same hardware or different > hardware. This is less true of network cards, but definitely true of > CF cards (which can easily be identical from inspection, but have > different contents). The likes of ATA disks include serial numbers in words 10-19. These could be used to positively identify a drive when its availability has come into question. From what I recall, CF cards use an ATA-like command set. Wouldn't it be possible to get the serial number and model from them for positive identification? Regards, Andy > Andre Guibert de Bruet | Enterprise Software Consultant > > Silicon Landmark, LLC. | http://siliconlandmark.com/ >
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20040219025604.D76134>