Re: OpenBSD and FS-Support (compiling kernel without support..)

["Dom De Vitto" <dom@DeVitto.com>]

That's what I said! 

Dom
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Dom De Vitto                                       Tel. 07855 805 271
http://www.devitto.com                         mailto:dom@devitto.com
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-----Original Message-----
From: Generic Player [mailto:suck@my-balls.com] 
Sent: Wednesday, October 01, 2003 12:50 AM
To: Dom De Vitto
Cc: misc@openbsd.org
Subject: Re: OpenBSD and FS-Support (compiling kernel without support..)

On Tue, Sep 30, 2003 at 02:42:27PM +0100, Dom De Vitto wrote:
> You missed the point, in-controller write caching could cause data 
> loss during a power fault, if the OS is doing appropriate 
> checkpointing of the data, you really don't want the disk trying to be 
> clever too.

Which is why you turn off write caching.  That way you *won't* lose data.
Without write caching off, I *have* lost data when openbsd has crashed.
Performance difference with and without write cache isn't that big, and its
well worth it to protect your data.  Power loss isn't the only way to lose
data, so a UPS isn't justifcation for leaving write caching on.

Adam