Subject: Re: Odd ccd(4) problem
To: Bill Sommerfeld <sommerfeld@orchard.medford.ma.us>
From: Jason Thorpe <thorpej@nas.nasa.gov>
List: current-users
Date: 09/06/1995 08:54:19
On Wed, 06 Sep 1995 07:45:12 -0400
Bill Sommerfeld <sommerfeld@orchard.medford.ma.us> wrote:
> Here's one idea...
>
> All components of the ccd must have the same fstype; the fstype of the
> ccd is that type.
>
> If the components don't match, you get an error when assembling the
> ccd out of its component pieces.
That seems reasonable, although there are still some fstypes one might want
to exclude...
> optional:
>
> If you update the disklabel of the ccd with a different fstype, the
> disklabels of the component pieces get updated.
>
> i.e., if I newlfs a ccd formerly containing an FFS partition, the
> component pieces should now all be relabeled FS_BSDLFS instead of
> FS_BSDFFS.
There are pratical problems with this ... for one, when updating the
fstype of a ccd partition, you'd have to calculate which components the
partition lives on, and update only those. What if a ccd partition
occupies only one block of a component? Yuck. Also, there's the problem
of ports that Just Can't change fstypes ...
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