Date: Fri, 22 Jan 2010 10:09:00 +0100 From: Greg Byshenk <freebsd@byshenk.net> To: Dan Langille <dan@langille.org> Cc: FreeBSD Stable <freebsd-stable@freebsd.org> Subject: Re: device.hints isn't setting what I want Message-ID: <20100122090900.GG2910@core.byshenk.net> In-Reply-To: <20100122090102.GF2910@core.byshenk.net> References: <4B58FE0B.3010001@langille.org> <20100122090102.GF2910@core.byshenk.net>
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On Fri, Jan 22, 2010 at 10:01:02AM +0100, Greg Byshenk wrote: > On Thu, Jan 21, 2010 at 08:23:23PM -0500, Dan Langille wrote: > > First, see also my post: do I want ch0 or pass1? > > > > I have an external tape library and an external tape drive. They are > > not always powered up. My goal: always get the same devices regardless > > of whether or not the tape library is powered on at boot. > > > > After booting, with the tape library powered on, I have these devices: > > > > # camcontrol devlist > > <QUANTUM DLT7000 1E48> at scbus0 target 5 lun 0 (sa0,pass0) > > <DEC TL800 (C) DEC 0326> at scbus1 target 0 lun 0 (ch0,pass1) > > <DEC TZ89 (C) DEC 1837> at scbus1 target 5 lun 0 (sa1,pass2) > > <HL-DT-ST DVDRAM GSA-H10A JL02> at scbus2 target 0 lun 0 (cd0,pass3) > > <USB 2.0 Storage Device 0100> at scbus5 target 0 lun 0 (da0,pass4) > > > > In /boot/devices, I have added these entries: > > > > hint.scbus.1.at="ahc0" > > hint.scbus.0.at="ahc1" > > hint.scbus.2.at="acd0" > > hint.scbus.5.at="umass0" > > I think that this is wrong. > > I had a similar issue (multiple tape drives and changer devices that > needed to stay at the same ids). > > Your device.hints entries should look something like this: > > hint.sa.0.at="scbus0" > hint.sa.0.target="5" > hint.sa.0.unit="0" > hint.sa.1.at="scbus0" > hint.sa.1.target="3" > hint.sa.1.unit="0" > hint.sa.2.at="scbus0" > hint.sa.2.target="1" > hint.sa.2.unit="0" > hint.ch.0.at="scbus0" > hint.ch.0.target="4" > hint.ch.0.unit="0" > hint.ch.1.at="scbus0" > hint.ch.1.target="2" > hint.ch.1.unit="0" > hint.ch.2.at="scbus0" > hint.ch.2.target="0" > hint.ch.2.unit="0" > > Which I use to get this: > > # camcontrol devlist > <SONY LIB-162 0208> at scbus0 target 0 lun 0 (pass0,ch2) > <SONY SDX-1100 0102> at scbus0 target 1 lun 0 (sa2,pass1) > <SONY LIB-162 0203> at scbus0 target 2 lun 0 (pass2,ch1) > <SONY SDX-900V 0102> at scbus0 target 3 lun 0 (sa1,pass3) > # > > (Currently the first changer is not powered up.) > > > So I think that what you want is something like: > > hint.sa.0.at="scbus0" > hint.sa.0.target="5" > hint.sa.0.unit="0" > hint.sa.1.at="scbus1" > hint.sa.1.target="5" > hint.sa.1.unit="0" > hint.ch.0.at="scbus1" > hint.ch.0.target="0" > hint.ch.0.unit="0" > [...] Just saw your second message. I don't know if you can wire down 'pass?' the same way, but if you can, I would assume that you need to set it the same way as the 'sa?' and other devices. That is, if you want: > > <QUANTUM DLT7000 1E48> at scbus0 target 5 lun 0 (sa0,pass0) Then the device.hints entry would look like: hint.pass.0.at="scbus0" hint.pass.0.target="5" hint.pass.0.unit="0" (If you can do that.) -greg -- greg byshenk - gbyshenk@byshenk.net - Leiden, NL
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