[CentOS] Shrinking a volume group

[Les Mikesell]

On Tue, 2006-09-12 at 22:22 +0200, Daniel de Kok wrote:

> > Yes, leave it as a mirrored partition so when memory is swapped out to a
> > disk that dies, your server does not panic.
> 
> Yep, that's pretty sensible, especially if you have fast disks. With
> older, slower disks, and relatively little memory it becomes a trade-off
> that is worth consideration.

If the disks are scsi the writes happen pretty much in parallel and
you only read one copy when you read.  It should only slow you down
if you are using 2 ide drives on the same controller for the mirrors
in which case you have to wait for one write to complete before
the other starts.

-- 
  Les Mikesell
   lesmikesell at gmail.com