Date: Sat, 03 Jun 2006 22:17:10 -0600 From: Scott Long <scottl@samsco.org> To: Matt Jacob <mjacob@freebsd.org> Cc: scsi@freebsd.org Subject: Re: changes to cam_xpt to support sequential scanning (!parallel) Message-ID: <44825EC6.6010506@samsco.org> In-Reply-To: <200606040305.k5435Nm3083345@freefall.freebsd.org> References: <200606040305.k5435Nm3083345@freefall.freebsd.org>
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Matt Jacob wrote: > One solution that Scott suggested to some of the negotiation issues for > the MPT was to not do parallel problem, i.e., all targets in parallel. > > The patch at http://people.freebsd.org/~mjacob/CAM_PATCHES_FOR_SEQSCAN > > does just that and I've had quite good success with it so far. I add > a new flat, PIM_SEQSCAN, which cases xpt_scan_bus to *not* scan all > targets in parallel but rather to scan them sequentially. > > Comments? > > The code also does some cleanups under failure conditions. > > After a bit more testing I'd like to put this in if there are no > objections so I can get the mpt U320 stuff off my back for a while. I think that this is a good idea. It's a shame that we have to emulate Windows and Linux behaviour, but if it's needed then it's needed. Good job getting it figured out. Scott
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