Date: Mon, 4 Nov 1996 23:14:10 -0500 (EST) From: Thomas David Rivers <ponds!rivers@dg-rtp.dg.com> To: ponds!freefall.cdrom.com!freebsd-hackers Subject: Another round of aha2940 (or perhaps generic SCSI) lock ups.. Message-ID: <199611050414.XAA00266@lakes.water.net>
next in thread | raw e-mail | index | archive | help
Ok - I've done everything Adaptec tech. support said to do. I've ensure proper termination; dropped the transfer times, disabled synchronous & wide negotation on the older devices, disconnection negotiation, etc... What this has done has let me reproduce the SCSI lock-up more readily. Now, every time I write to the tape device (a Wangtek 5150ES QIC-150), when I get to the end of the writing, and the tape begins to rewind; *whamo* - my SCSI bus locks up.... The messages, of course, are not logged in /var/log/messages - because nothing can be written out. I've jotted them down - from my paper notes they are: ahc0: Issued Channel A Bus Reset #1. n SCB's aborted sd0(ahc0:0:0) timed out in message out phase, SCSISGI==0xb4 sd0(ahc0:0:0) asserted ATN - device reset in message buffer sd0(ahc0:0:0) timed out in message out phase, SCSISGI==0xa4 This just repeats until I reboot the machine. I let it continue for about 5 minutes. The only variation was the number of SCBs aborted. [Note, if I do a reset - the aha2940 is unable to probe the SCSI bus for devices. I have to turn the machine off and back on.] I note that "Vladimir P. Frolov" <pvp@fareast.rosprint.ru> has just reported the same problem; with an Adaptec 7880. I did not experience my problems until *after* I upgraded my kernel to 2.1.5-STABLE. - Dave Rivers -
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199611050414.XAA00266>