Date: Mon, 22 Mar 1999 16:38:30 -0800 From: David Greenman <dg@root.com> To: Mark Fullmer <maf@net.ohio-state.edu> Cc: freebsd-scsi@FreeBSD.ORG Subject: Re: Mylex DAC960SX question Message-ID: <199903230038.QAA19330@implode.root.com> In-Reply-To: Your message of "Mon, 22 Mar 1999 16:42:45 EST." <19990322164245.A16014@net.ohio-state.edu>
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Looks like the DAC960SX is misconfigured. I use that RAID controller on wcarchive and it works fine if properly configured. It shouldn't be reporting unused LUNs for one thing. Also, you might try changing something in the Adaptec SCSI BIOS config and saving the results. I've found that there seems to be an parameter initialization problem (with FreeBSD) on new ahc boards if you don't do this first. -DG David Greenman Co-founder/Principal Architect, The FreeBSD Project >The DAC960SX presents each logical drive to the host controller as >a logical unit. This appears to work, except the transfer rate >is reported as 3.300MB/s for LUN's 0-6. LUN7 reports 40MB/s. >Why is the transfer rate different on the first 7 LUN's? > >da1 at ahc0 bus 0 target 1 lun 0 >da1: <MYLEX DAC960SX246673B5 4332> Fixed Direct Access SCSI2 device >da1: 3.300MB/s transfers, Tagged Queueing Enabled >da1: 246673MB (505186304 512 byte sectors: 255H 63S/T 31446C) > >(da2:ahc0:0:1:1): READ CAPACITY. CDB: 25 20 0 0 0 0 0 0 0 0 >(da2:ahc0:0:1:1): ILLEGAL REQUEST asc:25,0 >(da2:ahc0:0:1:1): Logical unit not supported >da2 at ahc0 bus 0 target 1 lun 1 >da2: <MYLEX DAC960SX 4332> Fixed Direct Access SCSI2 device (offline) >da2: 3.300MB/s transfers, Tagged Queueing Enabled >da2: Attempt to query device size, failed > >... repeats for the unconfigured drives which the Mylex probably >shouldn't be reporting. I assume the controller is doing this to >help OS's which can't rescan the SCSI bus after boot. > >(da8:ahc0:0:1:7): READ CAPACITY. CDB: 25 e0 0 0 0 0 0 0 0 0 >(da8:ahc0:0:1:7): ILLEGAL REQUEST asc:25,0 >(da8:ahc0:0:1:7): Logical unit not supported >da8 at ahc0 bus 0 target 1 lun 7 >da8: <MYLEX DAC960SX 4332> Fixed Direct Access SCSI2 device (offline) >da8: 40.0MB/s transfers (20.0MHz, offset 16, 16bit), Tagged Queueing Enabled >da8: Attempt to query device size, failed > >-- >mark > > >To Unsubscribe: send mail to majordomo@FreeBSD.org >with "unsubscribe freebsd-scsi" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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