apollo@husc6.harvard.edu (Douglas Chan) (05/04/90)
Our 8mm Exabyte is causing problems for other SCSI devices (two Wren V drives and a 1/4" tape drive) on a sun 4/380 running 4.0.3. The problem only seems to show up when the drives are being accessed and large dumps are being made to the Exabyte. The errors are as follows: vmunix: sd0: sdtimer: I/O request timeout vmunix: Snap shot(HEX): state= 12, err= 0, stat= 1, int= 10, substate= 4 vmunix: ESP xcnt_lo= 0, hi= 2, cmd= 90, cur_target= 0 vmunix: flag= 80, stat= 1, step= dc, int= 0 vmunix: vmunix: num_dis_target= 0 scsi_stat= 0 scsi_msg= 81 vmunix: DVMA_stat= 310, addr= fff20e00 vmunix: target= 0, lun= 0 DMA addr= 1f000 count= 1000 (2000) vmunix: cdb= 8 0 af 30 10 0 vmunix: sd0c: read retry, blk 44848 (rel. blk 44848) vmunix: sense key(0x0): no sense Anyway, this happens for about 30 minutes then all the SCSI devices hang. Any processes which has to use any of the devices will also hang (they can't be killed either). Is this a SCSI driver problem? I've checked old issues of Sun-spots and found quite a few similar problems but I can't seem to find replies to them! -Doug apollo@raven.bu.edu
edp@titan.kodak.com (Ed Pendzik (Sun Consulting)) (05/30/90)
In article <7393@brazos.Rice.edu> buengc!apollo@husc6.harvard.edu (Douglas Chan) writes: | Our 8mm Exabyte is causing problems for other SCSI devices (two Wren V | drives and a 1/4" tape drive) on a sun 4/380 running 4.0.3. The problem | only seems to show up when the drives are being accessed and large dumps | are being made to the Exabyte. | | Anyway, this happens for about 30 minutes then all the SCSI devices hang. | Any processes which has to use any of the devices will also hang (they | can't be killed either). Wren v's have a firmware problem which only occurs when the page 2 parameter buffer full/empty discon/recon ratio is larger than 4. Call Imprimis/Segate and ask to get your firmware upgraded to rev 75900297 or better of change the page 2 parameter back, which will slow down you disk by effectively disabling the caching.