Date: Sun, 28 Jan 2007 10:37:56 +0100 From: Ed Schouten <ed@fxq.nl> To: "M. Warner Losh" <imp@bsdimp.com> Cc: FreeBSD Hackers <freebsd-hackers@freebsd.org>, freebsd-stable@freebsd.org, pietro.cerutti@gmail.com, hselasky@c2i.net Subject: Re: atacontrol kernel crash (atausb?) Message-ID: <20070128093756.GS64263@hoeg.nl> In-Reply-To: <20070127.192204.-862243883.imp@bsdimp.com> References: <e572718c0701150824o24d14ff8t4f42dbe1cd0314c6@mail.gmail.com> <20070124113858.GG64263@hoeg.nl> <200701241254.51900.hselasky@c2i.net> <20070127.192204.-862243883.imp@bsdimp.com>
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[-- Attachment #1 --] * M. Warner Losh <imp@bsdimp.com> wrote: > In message: <200701241254.51900.hselasky@c2i.net> > Hans Petter Selasky <hselasky@c2i.net> writes: > : Instead of having all these quirks, isn't it possible that the SCSI layer can > : auto-probe this? > > The short answer is no. There's no reliable way to tell if a device > supports a given scsi command, and some devices freak out (lock up) > when sent one. Well, in one of the scenario's there is. USB UFI devices never support synchronize. -- Ed Schouten <ed@fxq.nl> WWW: http://g-rave.nl/ [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (FreeBSD) iD8DBQFFvG7052SDGA2eCwURAoe7AJkBVMPbaliNAzvM3M7dW4ucRtAoZwCfbNc5 +jjy6M2SJeWB8/RxES3XEOc= =euv/ -----END PGP SIGNATURE-----
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