Date: Fri, 5 Jan 2007 09:47:13 -0800 (PST) From: mjacob@freebsd.org To: Scott Long <scottl@samsco.org> Cc: freebsd-scsi@freebsd.org Subject: Re: CAM rescanner thread? Message-ID: <20070105093930.Y34456@ns1.feral.com> In-Reply-To: <459E8AE7.90104@samsco.org> References: <20070104225519.Q92958@ns1.feral.com> <459E8AE7.90104@samsco.org>
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On Fri, 5 Jan 2007, Scott Long wrote: > mjacob@freebsd.org wrote: >> >> Opinions? Seems to do what *I* want for automatically attaching devices for >> mpt or isp when they appear on the fabric. All you have to do is >> alloc a ccb && a path and call xpt_rescan. > > Why do you need a separate thread for this? Many other drivers already > handle this just fine. In CAM? I did try doing it without a thread and had all sorts of problems that led to panics. I suppose I could try and fix that, but it's also true that notification that things have changed is almost certainly on an ithread and that the begin of a scan starts a heck of a lot of work before returning. D'ya think it's that crucial other than just another proc slot? -matthelp
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