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Date:      Fri, 3 Sep 1999 18:01:15 +0930
From:      Greg Lehey <grog@lemis.com>
To:        Thierry Herbelot <thierry.herbelot@alcatel.fr>
Cc:        Anders Andersson <anders@sanyusan.se>, Joe McGuckin <joe@monk.via.net>, questions@FreeBSD.ORG
Subject:   Re: ccd vs. Vinum (was: CCD cookbook ?)
Message-ID:  <19990903180115.U95378@freebie.lemis.com>
In-Reply-To: <37CF7EC0.8B1B7E9F@alcatel.fr>; from Thierry Herbelot on Fri, Sep 03, 1999 at 09:54:40AM %2B0200
References:  <199908311949.MAA72870@monk.via.net> <19990901052654.G13904@freebie.lemis.com> <19990903093102.A1610@enterprise.sanyusan.se> <19990903170325.O95378@freebie.lemis.com> <37CF7EC0.8B1B7E9F@alcatel.fr>

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On Friday,  3 September 1999 at  9:54:40 +0200, Thierry Herbelot wrote:
> Greg Lehey wrote:
>>
>> On Friday,  3 September 1999 at  9:31:02 +0200, Anders Andersson wrote:
>>> * Greg Lehey (grog@lemis.com) [990831 21:53]:
>>>>
>>>> I don't think things have changed much.  But why don't you try Vinum?
>>>> There are instructions at http://www.lemis.com/vinum.html.
>>>
>>> Because vinum is much more complex and harder to setup perhaps.
>>
>> I doubt that.  Setting up ccd was a real pain.
>>
>>> Anders (who happily uses ccd)
>>
>> Ah, but did the setup work first time?
>
> I've had a moment of stress last monday when my just-cvsupped -Stable
> NFS server did no longer see a vinum-striped two-disk partition.
>
> I had "unused" as the disklabel partition type and vinum seems to no
> longer tolerate this (but there was no no error message in the log).

That's right.  There's no way for Vinum to determine if a partition
which doesn't belong to it is correct or not.  Right from the
beginning, though, the man page said:

   DRIVE LAYOUT CONSIDERATIONS
     vinum drives are currently BSD disk partitions.  They must be of type
     vinum in order to avoid overwriting file systems.  For compatibility rea-
     sons, vinum currently accepts partitions of type unused, but the next re-
     lease will not allow this kind of partition.

> PS : I'm contemplating a RAID-5 partition on my new BP6 (is there a
> tutorial somewhere ?)

Not yet.

Greg
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