Re: bootvinum and multiple pc-partitions

[Greg 'groggy' Lehey <grog@xxxxxxxxxxx>]

On Thursday, 19 December 2002 at 22:34:57 -0600, Hari Bhaskaran wrote:
> On Fri, Dec 20, 2002 at 02:26:34PM +1030, Greg 'groggy' Lehey wrote:
>
>> I must confess to being a bit baffled.  You seem to be confused on a
>> number of points.  Certainly there's never any reason to put more than
>> one Vinum volume on a physical disk.
>
> Are you asking where the second hard-drive is attached to the same
> cable?

No.

> Yes, one is the master, other is slave. I guess this could be
> problem if the master is dead. But they are still two separate
> harddisks.

/dev/ad1s1 and /dev/ad1s2 are both the same disk.

> I was following the article
> http://www.freebsd.org/doc/en_US.ISO8859-1/articles/vinum/index.html
>
> After a search, I found some other articles
> http://org.netbase.org/vinum-mirrored.html. May be I will try to
> follow this one.
>
> Here is a summary of what I was trying to do:-
>
> I began a normal FreeBSD install with a single 120G disk. I needed the
> following partitions
>
> /	  1G
> swap	  6G  (may be a bit too much!)
> /var	  3G
> /var/log  1G
> /var/tmp  1G
> /tmp	  3G
> /usr	  3G
> /usr/home 3G
> /fs1	  2G
> /fs2	  20G
> /fs3	  40G
> /fs4	  31G
>
> Since I don't seem to be able to create more than 7 or so FreeBSD
> fs partitions per PC-partition, I split the PC-partition into two.
> That's why I have ad0s1 & ad0s2.

You don't need more than one partition.

> Now I need the whole disk mirrored on the second 120G disk.  I may
> not want to mirror /fs4, that's all.
>
>> create.ThruBank
>> create.YouCrazy
>
> There are default files (I didn't care to change the default names)
> generated by bootvinum.
>
>> You shouldn't be specifying explicit drive offsets.  It's also not a
>> good idea to specify names for pleses or subdisks.  In addition,
>> you've detected a bug in the Vinum parser: you can't have / characters
>> in object names.
> [snip]
>>
>> You're creating a lot of unattached plexes here.  Why?
>
> I just ran the script. So please ignore these.
>
>> I don't know why you're going to so much trouble when it's *much*
>> easier to do it manually.  I can't help you with bootvinum, beyond
>> to suggest not to use it.

I can only repeat that.

Greg
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