Date: Wed, 14 Apr 1999 17:52:43 -0500 (CDT) From: Font <font@couscous.fortdearborn.com> To: freebsd-questions@freebsd.org Subject: DAT always writes short tapes Message-ID: <Pine.BSF.3.96.990414145240.23056A-100000@couscous.fortdearborn.com>
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I have a FreeBSD 3.1-RELEASE system with an AHA-2940UW on it, and a WangDAT 3400DX DDS-2 DAT tape drive (along with two 4 gig drives) hung off of it. When I dump to the drive (ie, "dump -0au -f /dev/nrsa0 /home"), dump asks me to change tapes after about 1.5 gigabytes of data has been dumped. Since I use either 90m or 120m tapes, I've been expecting a tape change after more than 2 or more than 4 gigabytes, respectively, depending on the tape. But no matter what size I use, I'm always changing tapes after 1.5 gigabytes. The default compression mode on the drive is DCLZ, according to "mt status". If I turn compression off, or on without using DCLZ, dumps are veerrry slow. The compression switch on the bottom of the drive is on. Other devices on the bus (two SCSI data-only drives) work fine. Is there anything more I should check or fiddle with in FreeBSD before I decide that the drive is broken? In the meantime, I bought a 20 gigabyte EIDE drive to do quicker but less generations of dumps on, but really I'd rather have something I could take offsite. dw To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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