Date: Fri, 22 Oct 1999 16:47:53 -0700 From: Cayford Burrell <cayford@vicor-nb.com> To: freebsd-questions@FreeBSD.ORG Subject: scsi tape timeouts and crashes Message-ID: <3810F7A9.A7A639AF@vicor-nb.com>
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Hi. In the last week one of our servers has crashed during tape backups, 3 times now. The tape is a 4mm scsi, on it's own 2940. The system disk is on a different 2940. It is running FreeBSD 2.2.6. Each time, during the tape backup, the machine freezes up, no console response, no rlogin, no ping. We hit the reset button, and reboot. The /var/log/messages file shows problems beginning with "st0(ahc0:2:0) SCB 0x0 - timed out in command phase, SCISIGI == 0x84", various additional timeouts, bus resets, etc. In the course of a minute, there are 15 such messages, then the reboot messages "Copyright 1992-1998 FreeBSD Inc". I suspect that the drive itself has problems, but it seems strange that a problem like this would cause the machine to freeze. Anything going on in the st driver that would help here? I've heard that in 3.x, the CAM drivers are now in control, and maybe they do a better job of coping with device troubles. Thanks. -- Cayford To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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