Re: Setting up raid correctly

[Philip Mueller <spectre2%gmx.de@localhost>]

On 24.02.2013 18:41, Manuel Bouyer wrote:
> On Sun, Feb 24, 2013 at 07:27:19PM +0000, Philip Mueller wrote:
> > [...]
> > What is the next step?
> > Create gpt+ shifted partition?
> create a gpt partition on the raid volume a newfs it.
> then create a second gpt partition on wd3, type ffs, which is the
> same size as the gpt partition on the raid, but with start shifted
> by 64 or 128 sectors (I though it was 128 but David may be right about it
> being 64).
spectre# gpt create raid1
spectre# gpt add -t ffs raid1
Partition added, use:
        dkctl raid1 addwedge <wedgename> 34 3907028925 <type>
to create a wedge for it
spectre# dkctl raid1 addwedge dk1 34 3907028925 ffs
dk1 created successfully.
spectre# newfs -O2 dk1
/dev/rdk1: 1907729.0MB (3907028920 sectors) block size 32768, fragment 
size 4096
        using 2570 cylinder groups of 742.31MB, 23754 blks, 46848 inodes.
super-block backups (for fsck_ffs -b #) at:
192, 1520448, 3040704, 4560960, 6081216, 7601472, 9121728, 10641984, 
12162240,
...............................................................................
spectre# raidctl -uv raid1
spectre# gpt show wd3
       start        size  index  contents
           0           1         PMBR
           1           1         Pri GPT header
           2          32         Pri GPT table
          34  3907029101      1  GPT part - NetBSD RAIDFrame component
  3907029135          32         Sec GPT table
  3907029167           1         Sec GPT header

The Problem is now, that there is already a gpt table on wd3.
How could be create a second gpt partition with shift of 64 sectors?