Date: Fri, 1 Aug 1997 19:42:35 -0700 From: Randy Gobbel <gobbel@cogsci.ucsd.edu> To: Mr LEROY christophe <leroy@meg.fr>, aic7xxx@FreeBSD.ORG Subject: Re: Subject: Pb with a tape TRAVAN TR4 device Message-ID: <v03110703b0084dc7abf2@[137.110.78.122]> In-Reply-To: <199708010826.KAA00341@meg.meg.fr>
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At 10:26 AM +0200 8/1/97, Mr LEROY christophe wrote: >I've a AHA-2940AU with two internal devices: >scsi0: Target 1, channel A, now synchronous at 10.0MHz, offset 15. > Vendor: IBM Model: DORS-32160 Rev: WA6A > Type: Direct-Access ANSI SCSI revision: 02 >Detected scsi disk sda at scsi0, channel 0, id 1, lun 0 >scsi0: Target 2, channel A, now synchronous at 5.0MHz, offset 15. > Vendor: CONNER Model: CTT8000-S Rev: 1.07 > Type: Sequential-Access ANSI SCSI revision: 02 > >When triing to position the tape using mt (mt rewind, mt fsf, etc...), >If I'm in Single User Mode (Linux booted with -b option), it works fine, but >In Multi user mode, It comes a Timeout on access to Disk during tape >positioning. >Could someone help me to solve this Probleme ??? > >Christophe Leroy > >Here is my /proc/scsi/aic7xxx/0 then my kernel ring buffer contents > >Adaptec AIC7xxx driver version: 4.0/3.2/4.0 > >Compile Options: > AIC7XXX_RESET_DELAY : 15 > AIC7XXX_TWIN_SUPPORT : Enabled > AIC7XXX_TAGGED_QUEUEING: Disabled > AIC7XXX_PAGE_ENABLE : Enabled > AIC7XXX_PROC_STATS : Disabled > >Adapter Configuration: > SCSI Adapter: AHA-2940A Ultra > (AIC-785x chipset) > Host Bus: Single > Base IO: 0xfc00 > IRQ: 11 > SCBs: Used 2, HW 3, Page 255 > Interrupts: 5018 > Serial EEPROM: True > Extended Translation: Enabled > SCSI Bus Reset: Disabled > Ultra SCSI: Disabled > Target Disconnect: Disabled I have the same model tape drive on my PPro w/ AHA2940-UW running Linux 2.0.30, and it works fine. I suspect that you need to enable Target Disconnect. It's also a good idea to enable SCSI Bus Reset, and it doesn't hurt anything to enable Ultra SCSI either. I think there's somewhere in the documentation for the tape drive where it says to disable disconnect, but when I tried it my system blew up in my face--don't recall if it was precisely the same problem you had, but in any case it didn't work. Enabling disconnect doesn't hurt anything, and my tape drive works perfectly. -Randy
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