Geom striped mirrors questions

[Tony Holmes]

> --- Tony Holmes <tony at crosswinds.net> wrote:
> > I am trying to set up a RAID 10 data array using 12 identical 33gb scsi
> > disks. 2 are being kept for spares
> > 
> > First I set up a single slice on each disk using:
> > 
> > fdisk -I -1 /dev/da{0,1,2,3,4,5,6,7,8,9,10,11,12,13}
> >
> What is this good for?
> 
> > Jul 21 08:06:57 db kernel: GEOM_STRIPE: Disk mirror/dm0 attached to ds0.
> > Jul 21 08:06:57 db kernel: GEOM_STRIPE: Cannot add disk mirror/dm0c to ds0
> > (error=17).
> > Jul 21 08:06:57 db kernel: GEOM_STRIPE: Disk mirror/dm1 attached to ds0.
> >
> I would interpret this as follows:
> gstripe takes dm0 and dm1 into its ds0...
> When it sniffed at dm0c it saw, that it has the same meta data as dm0, which
> results in error number (errno) 17 (EEXISTS /usr/include/errno.h)...
> 
> Resolution:
> You should delete the fdisk meta data in the beginning (first 63 sectors) of
> each disk for "cosmetic" reasons, because:
> 1. It is not used...
> 2. It creates unnecessary warnings...

Ahhh, that was the basis of my confusion. I will try that!

Thanks for the super fast response :)

-- 
Tony Holmes

Ph: (416) 993-1219

Founder and Senior Systems Architect
Crosswinds Internet Communications Inc.