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Re: write cache on 3ware controller and XFS

To: "Bryan J. Smith" <b.j.smith@xxxxxxxx>
Subject: Re: write cache on 3ware controller and XFS
From: TJ Easter <tje@xxxxxxxxxx>
Date: Tue, 5 Nov 2002 17:56:51 -0500 (EST)
Cc: Christophe Zwecker <doc@xxxxxxxxxx>, <linux-xfs@xxxxxxxxxxx>
In-reply-to: <1036533303.3dc83e370b1b4@xxxxxxxxxxxxxxxxxxxxxxxxx>
Sender: linux-xfs-bounce@xxxxxxxxxxx
Will 'hdparm -W /dev/hdX' not disable the write cache in this scenario?

Regards,
TJ Easter

On Tue, 5 Nov 2002, Bryan J. Smith wrote:

>
> Quoting Christophe Zwecker <doc@xxxxxxxxxx>:
> > the firmware is the one I dl from the 3ware page 1 week ago, when I
> > installed the system, the kernel is 2.4.19, so I guess that shit fit.
>
> Okay, you _probably_ have _too_new_ of a firmware for your driver!  If find 
> the
> stock kernel lags 3Ware by 6-12 months, and 3Ware almost always introduces a 
> new
> driver with each new firmware release.
>
> I'd say you found your problem then.  Be sure to _always_ install the driver
> with the firmware image you get from 3Ware.  They even include a Makefile to
> make things easy.
>
> Or don't you read things like READMEs???  ;-P
>
> > yeah, mostly true, tho I need that for an ftp server, its unconvinient
> > to guess how big a dir will get an "waste" a partition on it when the
> > space wont be available to other dirs.
>
> Perfect excuse to put those accounts on their own filesystem(s)!  ;-P
>
> > Anyhow, I know now, I shall never enable the write cache again, i
> > kinda pi.. me off to waste performance..well security goes first. Since its
> > an ftp server speed is not all that important - the line aint THAT fast.
>
> Again, you're firmware is probably _too_new_ for your driver.
>
> > Anyone know where to get those tools to disable write cache on my IDE
> > hds ? I hope I dont need windows for that...
>
> You usually need to boot DOS to do so.  And you'll need to put them on a
> standard ATA controller, as 3Ware Escalades hide them behind their ASIC.
>
> --
> Bryan J. Smith, E.I.            Contact Info:  http://thebs.org
> A+/i-Net+/Linux+/Network+/Server+ CCNA CIWA CNA SCSA/SCWSE/SCNA
> ---------------------------------------------------------------
> When people focus on recycling trees, the fastest regenerating
> resource on the planet, you know the country's environmental
> policy has one of the most misguided focuses it could have.
>
>
>
>
>


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