Date: Tue, 01 Jan 2002 13:39:30 -0500 From: Giuseppe Pagnoni <gpagnon@emory.edu> To: freebsd-questions@freebsd.org Subject: how to disable write cache? Message-ID: <3C320262.7020500@emory.edu>
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Hi
I have erratic problems with a Seagate SCSI driver and browsing through
the lists I came to understand that this might be related to the write
caching turned on or a bad firmware. I was unable to find a new firmware
from the seagate site and I couldn't find a way to turn off write
caching via the SCSI controller setup either(no related options there).
I found this alternative suggestion on the list:
> Run this:
>
> EDITOR="/usr/bin/perl -i -pe 's/1/0/g if /^WCE/'" \
> camcontrol modepage da0 -P 3 -m 8
>
> do this for all your drives which have bad firmware.
but... clearly EDITOR is not a command, so i guess i am missing
something here.
Could somebody explain me (in simpler terms) how can i disable write
caching for my two SCSI disks (da0 and da1) permanently in FreeBSD 4.4R?
thanks a lot!
giuseppe
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