Date: Tue, 02 May 2006 16:25:21 -0600 From: Scott Long <scottl@samsco.org> To: Adam <fbsd@globalmegahost.com> Cc: freebsd-stable@freebsd.org Subject: Re: 'camcontrol rescan all' does not find the attached tape drive Message-ID: <4457DC51.9030104@samsco.org> In-Reply-To: <Pine.BSF.4.58.0605021735590.98180@soulgamer.com> References: <Pine.BSF.4.58.0605021735590.98180@soulgamer.com>
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This is a problem with the RAID controller that you've hooked the tape drive to, it has nothing to do with FreeBSD. If this is a configuration that you much use, and there is absolutely no way that you can find a simple SCSI controller to hook the tape drive up to, then you'll need to investigate how to use the ASR management tools to do a manual rescan before running camcontrol. Scott Adam wrote: > Hello list. > > Using camcontrol, I cannot get freebsd 6.1-RC1 to recognize an attached > tape drive. Is this normal? > > If the machine boots with the tape drive turned off, I cannot get the tape > drive to be recognized after I turn the tape drive on. > > # camcontrol rescan 1 > Re-scan of bus 1 was successful > # camcontrol rescan all > Re-scan of bus 0 was successful > Re-scan of bus 1 was successful > # camcontrol devlist -v > scbus0 on asr0 bus 0: > <ADAPTEC RAID-5 3B0A> at scbus0 target 0 lun 0 (da0,pass0) > <SUPER GEM318 0> at scbus0 target 6 lun 0 (ses0,pass1) > < > at scbus0 target -1 lun -1 () > scbus1 on asr0 bus 1: > < > at scbus1 target -1 lun -1 () > scbus-1 on xpt0 bus 0: > < > at scbus-1 target -1 lun -1 (xpt0) > > If the machine boots up while the tape drive is attached and powered up, > the tape drive is recognized. > > # camcontrol devlist > <ADAPTEC RAID-5 3B0A> at scbus0 target 0 lun 0 (da0,pass0) > <SUPER GEM318 0> at scbus0 target 6 lun 0 (ses0,pass1) > <HP Ultrium 2-SCSI S24D> at scbus1 target 6 lun 0 (sa0,pass2) > > Here are some more details about my setup. > > machine: > > - supermicro super server 6013P-8 with zero channel raid controller > - SMP hardware, UP kernel with ASR_COMPAT > - FreeBSD name 6.1-RC FreeBSD 6.1-RC #1: Fri Apr 21 16:09:23 MDT 2006 > - Adaptec AIC-7902 Dual-Channel Ultra-320 Controller > - Adaptec 2015S ZCR Card > > relevant dmesg data: > > asr0: <Adaptec Caching SCSI RAID> mem 0xf8300000-0xf83fffff,0xfb000000-0xfbffffff,0xfc000000-0xfdffffff irq 30 at device 3.0 on pci3 > asr0: [GIANT-LOCKED] > asr0: ADAPTEC 2015S FW Rev. 3B0A, 2 channel, 256 CCBs, Protocol I2O > > sa0 at asr0 bus 1 target 6 lun 0 > sa0: <HP Ultrium 2-SCSI S24D> Removable Sequential Access SCSI-3 device > ses0 at asr0 bus 0 target 6 lun 0 > ses0: <SUPER GEM318 0> Fixed Processor SCSI-2 device > ses0: SAF-TE Compliant Device > da0 at asr0 bus 0 target 0 lun 0 > da0: <ADAPTEC RAID-5 3B0A> Fixed Direct Access SCSI-2 device > da0: Tagged Queueing Enabled > da0: 70006MB (143372288 512 byte sectors: 255H 63S/T 8924C) > > When I power down and disconnect the tape drive /var/log/messages receives > the following. > > Apr 26 13:57:20 name kernel: (sa0:asr0:1:0:0): lost device > Apr 26 13:57:20 name kernel: (sa0:asr0:1:0:0): removing device entry > > So I reboot, and try a different disconnect method. > > # camcontrol stop sa0 > Unit stopped successfully > # camcontrol devlist > <ADAPTEC RAID-5 3B0A> at scbus0 target 0 lun 0 (da0,pass0) > <SUPER GEM318 0> at scbus0 target 6 lun 0 (ses0,pass1) > <HP Ultrium 2-SCSI S24D> at scbus1 target 6 lun 0 (sa0,pass2) > > Then I power off the tape unit and attach a new unit (attach scsi cable, > power cable, then power on the unit). > > # camcontrol tur sa0 -E -C 4 -v > error sending test unit ready: Device not configured > (pass2:asr0:1:6:0): TEST UNIT READY. CDB: 0 0 0 0 0 0 > (pass2:asr0:1:6:0): CAM Status: CCB request is in progress > > /var/log/messages got the following 2 lines as soon as I launched > camcontrol: > > Apr 26 15:32:27 name kernel: (sa0:asr0:1:6:0): lost device > Apr 26 15:32:27 name kernel: (sa0:asr0:1:6:0): removing device entry > > # camcontrol rescan pass2 > Re-scan of bus 0 was successful > > This is a problem as the tape drive (pass2) was on bus 1. Granted, pass2 > was pointing to sa0:asr0:1:6:0 and the device that is now attached is > connected via asr0:1:0:0. > > adamu010# camcontrol rescan all > Re-scan of bus 0 was successful > Re-scan of bus 1 was successful > # camcontrol devlist > <ADAPTEC RAID-5 3B0A> at scbus0 target 0 lun 0 (da0,pass0) > <SUPER GEM318 0> at scbus0 target 6 lun 0 (ses0,pass1) > # camcontrol rescan 1:0:0 > Re-scan of 1:0:0 was successful > # camcontrol devlist > <ADAPTEC RAID-5 3B0A> at scbus0 target 0 lun 0 (da0,pass0) > <SUPER GEM318 0> at scbus0 target 6 lun 0 (ses0,pass1) > # camcontrol reset 1 > Reset of bus 1 was successful > # camcontrol rescan 1 > Re-scan of bus 1 was successful > # camcontrol devlist 1 > <ADAPTEC RAID-5 3B0A> at scbus0 target 0 lun 0 (da0,pass0) > <SUPER GEM318 0> at scbus0 target 6 lun 0 (ses0,pass1) > > The drive documentation states that the drive's auto-termination is only > in effect when the drive is powered on. Does that mean I have an > unterminated bus when the tape drive is off? Perhaps the aic7902 > auto-terminates scbus1? How does termination influence what camcontrol > sees? The tape drive is not detected without a reboot. Despite the fine > man page for camcontrol and several examples provided by google of other > users using camcontrol to successfully reattach devices, I cannot do it. > I assume I have done something wrong, like misunderstanding how scsi > devices and/or termination function. Can anyone point out what I am doing > wrong and/or tell me how to change tape drives without rebooting my box? > > Thank you for any help! > > Adam > > ps: Please CC me as I am not subscribed to this list. TIA! > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org"
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