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Date:      Tue, 16 Mar 1999 16:17:14 +1030
From:      Greg Lehey <grog@lemis.com>
To:        carl@xena.IPAustralia.gov.au
Cc:        freebsd-questions@FreeBSD.ORG, freebsd-stable@FreeBSD.ORG
Subject:   Re: Softupdates and CCD (was: Vinum questions?)
Message-ID:  <19990316161714.E429@lemis.com>
In-Reply-To: <36EDE48F.1101F764@xena.ipaustralia.gov.au>; from Carl Makin on Tue, Mar 16, 1999 at 03:56:47PM %2B1100
References:  <19990312133024.005687@relay.skynet.be> <19990312144140.011407@relay.skynet.be> <19990313085234.D429@lemis.com> <36ED921D.C9BF2840@xena.ipaustralia.gov.au> <19990316100252.Q429@lemis.com> <36EDE48F.1101F764@xena.ipaustralia.gov.au>

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On Tuesday, 16 March 1999 at 15:56:47 +1100, Carl Makin wrote:
> Greg Lehey wrote:
>
>> On Tuesday, 16 March 1999 at 10:05:01 +1100, Carl Makin wrote:
>
>>>> On Friday, 12 March 1999 at 14:41:40 +0100, Brad Knowles wrote:
>
>>>>> experience with running a softupdates filesystem on top of a vinum
>>>>> striped/concatenated volume, do you?  Am I dreaming in hoping that
>
>>> I'm running softupdates on a CCD stripe.  I found it worked when I
>>> enabled softupdates on the 2 slices making up the CCD individually.  I
>>> couldn't enable it on the CCD itself.
>
>> This doesn't work.  You should be able to enable softupdates on the
>> ccd, but enabling it on the components makes no difference at all.
>> The fact that you can do it is a bug allowed by the fact that ccd
>> requires a 4.2BSD type partition.
>
> I just tried again and this time it worked.  I must have been doing
> something wrong before.  FWIW enabling softupdates on the components ran
> for over a week with a reasonable load and no visible problems. 

That doesn't surprise me.  I'd guess that it also showed no visible
difference in performance.

> It was probably just completely useless! :)

Right.

Greg
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