Date: Mon, 10 Sep 2007 22:52:39 -0600 From: Scott Long <scottl@samsco.org> To: "Kenneth D. Merry" <ken@kdm.org> Cc: freebsd-scsi@freebsd.org, njl@freebsd.org, freebsd-current@freebsd.org Subject: Re: Retirement of CAM_QUIRK_NOSERIAL Message-ID: <46E61F17.7050504@samsco.org> In-Reply-To: <20070911042517.GA18197@nargothrond.kdm.org> References: <46E615C4.1010605@samsco.org> <20070911042517.GA18197@nargothrond.kdm.org>
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Kenneth D. Merry wrote: > On Mon, Sep 10, 2007 at 22:12:52 -0600, Scott Long wrote: >> All, >> >> The attached patch should make CAM behave properly with regard to >> probing device serial numbers only when the device advertises that >> it supports it. It will hopefully eliminate the need for the >> CAM_QUIRK_NOSERIAL quirk (one instance is left because of an unrelated >> legacy problem that may or may not be possible to fix). This should >> especially benefit USB-UMASS devices, where the console output should >> be less noisy. It might even make more devices work out-of-the-box. >> So please focus testing on USB, but I'd also ask that people test >> the following devices as well as any firewire devices: >> >> * Western Digital My Book 250GB (USB) >> * Maxtor Personal Storage 3000XT (Firewire) > > Good idea. I wonder, though, whether devices that hang or otherwise blow > up on a serial number inquiry would also have trouble with the supported > pages VPD page. All the more reason we'll need people with the quirked > hardware to test it... > > Ken I'm pretty sure that VPD page 0x00 is part of WHQL, so there's a good chance that just about anything made in the last 10 years will support it sanely. Support should extend much further back since it was clearly defined in the SCSI-2 spec, though we both know how muddy that argument is. Scott
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