Date: Sun, 10 Nov 1996 19:14:52 +0100 From: se@zpr.uni-koeln.de (Stefan Esser) To: pvp@fareast.rosprint.ru (Vladimir P. Frolov) Cc: scsi@freebsd.org Subject: Re: SCSI problem Message-ID: <199611101816.TAA03033@x14.mi.uni-koeln.de> In-Reply-To: <3285631A.167EB0E7@fareast.rosprint.ru>; from Vladimir P. Frolov on Nov 10, 1996 15:07:38 %2B1000 References: <3285631A.167EB0E7@fareast.rosprint.ru>
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Vladimir P. Frolov writes: > Every night (after several hours of inactivity ) > there are some errors on my SCSI subsytem. > > > environment: > FreeBSD 2.1.5 > IWIll P55TU with Adaptec 7880 (2940 UW) > enable disconnection for HDD - no > termination: Low-Off/ High-On > IBM HDD: DFRSS2W (wide SCSI drive) connected to wide connector > autostart - on > D TI SY - on > TERM PWR EN - on > TOSHIBA SCSI-2 CD-ROM connected to 50pin connector > terminated via pluged terminators > > syslog: > ------- > sd0(ahc0:0:0): timed out in command phase, SCSISIGI == 0x4 > sd0(ahc0:0:0): asserted ATN - device reset in message buffer > sd0(ahc0:0:0): timed out in dataout phase, SCSISIGI == 0x0 > ahc0: Issued Channel A Bus Reset #1. 2 SCBs aborted > sd0(ahc0:0:0): UNIT ATTENTION asc:29,0 > sd0(ahc0:0:0): Power on, reset, or bus device reset occurred > , retries:3 > > swap_pager: I/O error - pagein failed; blkno 11152, size 8192, error 5 > vm_fault: pager input (probably hardware) error, PID 92 failure > sd0(ahcsd0(ahc0:0:0): NOT READY asc:4,1 > sd0(ahc0:0:0): Logical unit is in process of becoming ready > , retries:3 Ahh, the IBM DFRS ... Well, but it was cheap, wasn't it ? This is the "SOHO" version of the DFHS, with identical technical specs, except it is not suitable for 24 hour operation. There once was a report in a German computer magazine (c't), according to which the drive will be automatically powered down (and restarted after about one minute) when it has been up for too long. It is sold for systems that get switched off each night, and their owners will never notice. But this is fatal for a server ... Try to get that drive replaced by some other model. The DFHS is about 50% more expensive, but there was a cheap (OEM) version of the Quantum Atlas 2GB being offered all around, which seems to be technically identical to the "normal" Atlas. It was manufactured for some large OEM, which did not accept the drives (for whatever reasons) and now are sold cheaply (with OEM specific firmware). Sorry, but there most probably isn't any software solution. You could try to perform a controlled STOP/START cycle of the drive at a more suitable time (with the SCSI driver knowing that there will be no reply from the drive for more than a minute). Regards, STefan
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