Date: Wed, 14 Jul 1999 16:26:55 -0600 (MDT) From: "Kenneth D. Merry" <ken@plutotech.com> To: asami@FreeBSD.ORG (Satoshi - Ports Wraith - Asami) Cc: nisha@cs.berkeley.edu, scsi@FreeBSD.ORG Subject: Re: Question Message-ID: <199907142226.QAA41224@panzer.kdm.org> In-Reply-To: <199907142157.OAA15107@silvia.hip.berkeley.edu> from Satoshi - Ports Wraith - Asami at "Jul 14, 1999 02:57:11 pm"
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Satoshi - Ports Wraith - Asami wrote... > * I have a Quantum Atlas disk drive that appears to > * be doing some form of delayed write optimization. > * Is there any OS command or mode page change that can > * turn it off? > > You mean to turn off write caching? I *think* it's the "WCE" (write > cache enable) bit on modepage 8. > > You can edit it by the command > > camcontrol modepage -e -m 8 /dev/pass0 > > (omit the "-e" to just show the values). That's probably not quite what you want to do. You can't specify a device pathname with camcontrol. Instead, if you wanted to edit mode page 8 for pass0: camcontrol modepage -n pass -u 0 -m 8 -P 3 -e Otherwise, camcontrol will probably reject /dev/pass0 as garbage and default to editing mode page 8 on da0. Ken -- Kenneth Merry ken@plutotech.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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