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Date:      Wed, 31 Dec 2003 16:54:21 +1030
From:      Greg 'groggy' Lehey <grog@FreeBSD.org>
To:        Micheas Herman <micheas@freep.org>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: Booting from vinum RAID 1: How should I edit my disk label?
Message-ID:  <20031231062421.GS10758@wantadilla.lemis.com>
In-Reply-To: <20031231055128.GA10523@sol>
References:  <1072672057.1411.22.camel@tux> <20031229062145.GB10758@wantadilla.lemis.com> <1072681819.1411.65.camel@tux> <1072684712.1411.97.camel@tux> <1072672057.1411.22.camel@tux> <20031229062145.GB10758@wantadilla.lemis.com> <1072681819.1411.65.camel@tux> <20031231053400.GO10758@wantadilla.lemis.com> <20031231055128.GA10523@sol>

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On Tuesday, 30 December 2003 at 21:51:35 -0800, Micheas Herman wrote:
> On 31 Dec 03,  4:04PM, Greg 'groggy' Lehey wrote:
>> On Sunday, 28 December 2003 at 23:10:20 -0800, Micheas Herman wrote:
>>> On Sun, 2003-12-28 at 22:21, Greg 'groggy' Lehey wrote:
>>>> On Sunday, 28 December 2003 at 20:27:37 -0800, Micheas Herman wrote:
>>>>> Hi,
>>>>> 8 partitions:
>>>>> #        size   offset    fstype   [fsize bsize bps/cpg]
>>>>>   a:  9216000 14966784    4.2BSD     2048 16384 28552
>>>>>   b: 20942848 24182784    4.2BSD     2048 16384 28552
>>>>>   c: 45126522        0    unused        0     0         # "raw" part, don't edit
>>>>>   d:   286720        0    4.2BSD        0     0     0
>>>>
>>>> That's wrong.  It should be of type Vinum.  It also looks very short.
>>>
>>>         It's 138M  of a 120G hard drive, which is probably about 60M
>>>         more than I'll use. (assuming that I don't put more in root than
>>>         I did with FreeBSD 4.x)
>>
>> That's a bad assumption, but 138 MB would probably still be enough for
>> a root file system.  But do you want to put only the root file system
>> under Vinum?  What's on the rest of this disk?
>
>  Slices that are currenetly working fine under vinum (guess I violated
>  the golden rule in ignroance)

Looks like it.

>>>         The only downside that i see from reading "The Vinum Volume
>>>         Manager" is that startup and shutdown will take longer, but I
>>>         don't see that being much more than a once a month activity at
>>>         the most. 1-200 days will be a much more frequent time between
>>>         booting for this system.
>>
>> And what's the corresponding upside?
>
> My dump scripts will still work without modification?

No, that won't make any difference.  It's even possible to correct the
configuration on the fly, but it's more pain than I want to describe.

> I Guess my problem is that I don't see how to declare an entire disk
> a vinum file system and then make subdisks.  I may be missing this
> in the docs, but i really don't get it.

It's pretty basic to the concepts.  Have you read the chapter from
"The Complete FreeBSD"?  If you have, and you still have problems
understanding it, I'd appreciate feedback about what's not described
adequately.

Greg
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