Date: Mon, 18 Mar 1996 19:31:48 -0800 (PST) From: Mostyn/Annabella <mrl@teleport.com> To: gibbs@freefall.freebsd.org Cc: current@freebsd.org, mrl@teleport.com Subject: SCSI death in -current with DAT Message-ID: <199603190331.TAA04150@linda.teleport.com>
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Hi, Under current, an ARCHIVE Python DAT (Conner - a modern one, a couple of months old, is detected to have "variable blocks" and times out bringing an Adaptec 2940UW to its knees. Afterwards, the machine won't even see a disk on reboot (via the reset button) and needs a power-cycle to reset the controller. Under 2.1R, the DAT is identified as having fixed 512-byte blocks and works perfectly! The DAT is on the non-wide cable on the 2940UW and a wide disk is the subject of a tar. A tar cf /dev/rst0 usr was used and the syslog messages during "death" ,using current, are - st0(ahc0:0:0): timed out in dataout phase, SCSISIGI = 0x48 st0(ahc0:0:0): BUS DEVICE RESET message queued. st0(ahc0:0:0): timed out in command phase, SCSISIGI = 0x84 ahc0: Issued Channel A Bus Reset #1. 1 SCBs aborted sd0(ahc0:5:0): UNIT ATTENTION asc:29.2 , retries: 4 st0(ahc0:0:0): timed out in dataout phase, SCSISIGI = 0x0 ahc0: Issued Channel A Bus Reset #2. 1 SCBs aborted st0(ahc0:0:0): timed out in dataout phase, SCSISIGI = 0x0 ahc0: Issued Channel A Bus Reset #2. 1 SCBs aborted DEATH can escape to ddb but nothing else - power cycle required. This, with a St. Patrick's Day -current. --> -current boot messages - ahc0 <Adaptec 2940 Ultra SCSI host adapter> rev 0 int a irq 11 on pci0:12 ahc0: aic7880 Wide Channel, SCSI Id=7, 16 SCBs ahc0 waiting for scsi devices to settle (ahc0:0:0): "ARCHIVE Python 28388-XXX 5.45" type 1 removable SCSI 2 st0(ahc0:0:0): Sequential-Access density code 0x0, variable blocks, write-enabled ^^^^^^^^^^^^^^^ (ahc0:1:0): "TOSHIBA CD-ROM XM-3701TA 3055" type 5 removable SCSI 2 cd0(ahc0:1:0): CD-ROM cd0(ahc0:1:0): NOT READY asc:3a,0 Medium not present can't get the size (ahc0:5:0): "Quantum XP32150W 81HB" type 0 fixed SCSI 2 sd0(ahc0:5:0): Direct-Access 2050MB (4199760 512 byte sectors) sd0(ahc0:5:0): with 3907 cyls, 10 heads, and an average 107 sectors/track (ahc0:6:0): "Quantum XP32150W 81HB" type 0 fixed SCSI 2 sd1(ahc0:6:0): Direct-Access 2050MB (4199760 512 byte sectors) sd1(ahc0:6:0): with 3907 cyls, 10 heads, and an average 107 sectors/track --> 2.1R boot messages - ahc0 <Adaptec 2940 Ultra SCSI host adapter> rev 0 int a irq 11 on pci0:12 de0: enabling 10baseT/UTP port ahc0: aic7870 Ultra Wide Channel, SCSI Id=7, aic7870, 255 SCBs ahc0 waiting for scsi devices to settle (ahc0:0:0): "ARCHIVE Python 28388-XXX 5.45" type 1 removable SCSI 2 st0(ahc0:0:0): Sequential-Access density code 0x13, 512-byte blocks, write-enabled ^^^^^^^^^^^^^^^ (ahc0:1:0): "TOSHIBA CD-ROM XM-3701TA 3055" type 5 removable SCSI 2 cd0(ahc0:1:0): CD-ROM cd0(ahc0:1:0): NOT READY asc:3a,0 Medium not present can't get the size (ahc0:5:0): "Quantum XP32150W 81HB" type 0 fixed SCSI 2 sd0(ahc0:5:0): Direct-Access 2050MB (4199760 512 byte sectors) (ahc0:6:0): "Quantum XP32150W 81HB" type 0 fixed SCSI 2 sd1(ahc0:6:0): Direct-Access 2050MB (4199760 512 byte sectors) I could force fixed blocks by hand in st.c but I'd prefer a genuine fix. Mostyn Lewis
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