Date: Fri, 13 Feb 2009 13:48:27 -0700 From: Scott Long <scottl@samsco.org> To: Attila Nagy <bra@fsn.hu> Cc: svn-src-head@FreeBSD.org, svn-src-all@FreeBSD.org, src-committers@FreeBSD.org, Scott Long <scottl@FreeBSD.org> Subject: Re: svn commit: r188570 - head/sys/cam Message-ID: <4995DC9B.1030708@samsco.org> In-Reply-To: <49958C73.2050406@fsn.hu> References: <200902131004.n1DA4xol082999@svn.freebsd.org> <49958C73.2050406@fsn.hu>
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Attila Nagy wrote: > Hello, > > Scott Long wrote: >> Author: scottl >> Date: Fri Feb 13 10:04:59 2009 >> New Revision: 188570 >> URL: http://svn.freebsd.org/changeset/base/188570 >> >> Log: >> In the case that the probe has determined that it can't query the >> device for >> a serial number, fall through to the next case so that initial >> negotiation >> still happens. Without this, devices were showing up with only 1 >> available >> tag opening, leading to observations of very poor I/O performance. >> This should fix problems reported with VMWare Fusion and ESX. Early >> generation MPT-SAS controllers with SATA disks might also be affected. >> HP CISS controllers are also likely affected, as are many other >> pseudo-scsi disk subsystems. >> > Is it possible that these two are related? > http://marc.info/?l=freebsd-scsi&m=122900270413265&w=2 > This is a bug in Domain Validation, introduced a couple of years ago, that I still haven't sorted out. Scott
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