From owner-freebsd-hackers  Thu Sep 13 20:22:55 2001
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From: "David Xu" <bsddiy@163.net>
To: <john_wilson100@excite.com>, "Greg Lehey" <grog@lemis.com>
Cc: <freebsd-hackers@freebsd.org>, <sos@freebsd.org>
References: <20775668.1000430889008.JavaMail.imail@doby.excite.com>
Subject: Re: Vinum Panic (was Re: HPT370 RAID or Vinum?)
Date: Fri, 14 Sep 2001 11:19:48 +0800
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----- Original Message -----=20
From: <john_wilson100@excite.com>
To: "Greg Lehey" <grog@lemis.com>
Cc: <freebsd-hackers@freebsd.org>; <sos@freebsd.org>
Sent: Friday, September 14, 2001 9:28 AM
Subject: Vinum Panic (was Re: HPT370 RAID or Vinum?)


> Well, I have to say that Vinum feels a lot faster than HPT RAID... I =
will
> quantify this statement when someone tells me how to turn off ATA =
write
> caching, because
>=20
> sysctl -w hw.ata.wc=3D0
>=20
> doesn't work, says "sysctl: oid 'hw.ata.wc' is read only"
>=20

hw.ata.wc=3D0
put it into /boot/loader.conf, then reboot.

--
David Xu



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