Date: Thu, 22 Jun 1995 16:22:26 -0700 From: "Justin T. Gibbs" <gibbs@freefall.cdrom.com> To: "Russell L. Carter" <rcarter@geli.com> Cc: bugs@freebsd.org Subject: Re: st bug again. Message-ID: <199506222322.QAA04332@freefall.cdrom.com> In-Reply-To: Your message of "Thu, 22 Jun 95 13:44:39 PDT." <199506222044.NAA00333@geli.clusternet>
next in thread | previous in thread | raw e-mail | index | archive | help
>Well, my tape is nice and cool today, but has started failing again. >Backing up say 100MB works, but attempting to grab the whole 1GB >of stuff crashes the system reliably. The symptom is the same, >ncrcontrol shows tps decaying to zero, then I lose all the filesystems. > >An interesting message did show up in /var/log/messages, one time >out of four crashes: > >Jun 22 10:57:49 geli /kernel: st0(ncr0:6:0): ABORTED COMMAND asc:4e,0 Overlapp >ed commands attempted >Jun 22 11:05:13 geli /kernel: st0(ncr0:6:0): ABORTED COMMAND asc:4e,0 Overlapp >ed commands attempted This means that a tagged command was attempted while a non-tagged command was active or vice-versa. My guess in this area would be that a request sense command was pending on the target and hadn't returned when a tagged command was sent to the target. To fix this kind of problem, you need to need to block commands to targets that have pending non-tagged commands. -- Justin T. Gibbs =========================================== Software Developer - Walnut Creek CDROM FreeBSD: Turning PCs into workstations ===========================================
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199506222322.QAA04332>