Date: Fri, 22 Jan 2010 10:01:02 +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: <20100122090102.GF2910@core.byshenk.net> In-Reply-To: <4B58FE0B.3010001@langille.org> References: <4B58FE0B.3010001@langille.org>
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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" [...] -- greg byshenk - gbyshenk@byshenk.net - Leiden, NL
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