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Date:      Sat, 18 Dec 1999 09:11:27 +1030
From:      Greg Lehey <grog@lemis.com>
To:        Morten Seeberg <morten@seeberg.dk>
Cc:        FreeBSD Questions <questions@FreeBSD.org>
Subject:   Re: Fw: Adding vinum
Message-ID:  <19991218091127.C475@freebie.lemis.com>
In-Reply-To: <070501bf48a0$14f17940$de00000a@SOS>
References:  <070501bf48a0$14f17940$de00000a@SOS>

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On Friday, 17 December 1999 at 16:04:53 +0100, Morten Seeberg wrote:
> On  Friday, December 17, 1999 3:49 PM, Morten Seeberg <ml@seeberg.dk> wrote:
>> On  Thursday, December 16, 1999 11:31 PM, Greg Lehey <grog@lemis.com> wrote:
>>> On Thursday, 16 December 1999 at 12:21:07 -0600, Tony Wells wrote:
>>>> I have a server which I would like to increase the availability of.  I
>>>> want to add a second hard disk to machine to mirror the data of the
>>>> previously installed disk.  I could mount the drive and periodically
>>>> 'dd' the data but this seems inelegant and expensive.
>>>>
>>>> So my questions:
>>>> Can I add a second hard drive and install it as a mirror drive using
>>>> vinum, or am I too late, having already partitioned the first drive?
>>>> (There's already data on the partitions.)
>>>
>>> Currently you can't do that.  It's one of the things I'm thinking of
>>> doing, but don't hold your breath.
>>>
>>> When replying to this message, please copy the original recipients.
>>> For more information, see http://www.lemis.com/questions.html
>>
>> Hi, the answer you gave below, was this a no to
>> VINUM does not support it
>>
>> or a no to:
>>
>> VINUM does not support it, because you already have data on the drive?
>
> Xtra question, if VINUM supports mirroring, does it work so that the
> machine will keep on running, even if one of the disks break down,
> or do we have to reboot.

Vinum (not VINUM) does not require rebooting under these
circumstances.  ccd does.

> And if the primary disk fails, can we easily swap to the other disk?

I don't understand the question.  There is no "primary" disk in a
mirror.

> If some of the above is possible, just point me to where the
> documentation that describes how this works is, and you´ve made my
> day :)

Take a look at http://www.lemis.com/vinum.html.

Greg
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