Date: Thu, 29 Feb 1996 16:21:38 -0700 From: Nate Williams <nate@sri.MT.net> To: tomppa@fidata.fi Cc: questions@freebsd.org Subject: Re: Backup problem Message-ID: <199602292321.QAA13183@rocky.sri.MT.net> In-Reply-To: <199602292125.XAA02246@zeta.fidata.fi> References: <199602292125.XAA02246@zeta.fidata.fi>
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> My system hangs when I'm doing full backup to DAT drive with tar or > cpio. ... > it takes 5-55 minutes before it happens. .... > I changed bt driver to aha (AMI SCSI controller is compatible with > buslogic 742a and Adaptec 1542). With aha driver backupping works like > a charm. Making full backup taked over an hour but it worked > smoothly. I even tried it twice. Any good explanations? Yep, I'll bet the bounce buffer code is enabled on the aha driver and might not be on the buslogic. > > real memory = 33554432 (32768K bytes) This is important if you have more than 16MB and your card can't do DMA above 16MB. > > bt0: Bt747S/ 0-(32bit) bus The bt driver assumes it can. Nate
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