Geom striped mirrors questions

[Tony Holmes]

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}

Then I set up the mirrors:

gmirror label -v -b round-robin dm0 /dev/da0 /dev/da7
gmirror label -v -b round-robin dm1 /dev/da1 /dev/da8
gmirror label -v -b round-robin dm2 /dev/da2 /dev/da9
gmirror label -v -b round-robin dm3 /dev/da3 /dev/da10
gmirror label -v -b round-robin dm4 /dev/da4 /dev/da11
gmirror label -v -b round-robin dm5 /dev/da5 /dev/da12

And finally the stripe:

gstripe label -s 524288 ds0 /dev/mirror/dm0 /dev/mirror/dm1 /dev/mirror/dm2
	/dev/mirror/dm3 /dev/mirror/dm4 /dev/mirror/dm5

The gstatus is fine:

and the array is usable/mountable/newfs'able but I am concered by the warnings
in /var/log/messages:

Jul 21 08:03:56 db kernel: GEOM_MIRROR: Device mirror/dm0 launched (2/2).
Jul 21 08:04:06 db kernel: GEOM_MIRROR: Device mirror/dm1 launched (2/2).
Jul 21 08:04:14 db kernel: GEOM_MIRROR: Device mirror/dm2 launched (2/2).
Jul 21 08:04:21 db kernel: GEOM_MIRROR: Device mirror/dm3 launched (2/2).
Jul 21 08:04:27 db kernel: GEOM_MIRROR: Device mirror/dm4 launched (2/2).
Jul 21 08:04:34 db kernel: GEOM_MIRROR: Device mirror/dm5 launched (2/2).
Jul 21 08:05:47 db kernel: GEOM_STRIPE: Device /dev/mirror/dm0 created (id=3520310645).
Jul 21 08:06:57 db kernel: GEOM_STRIPE: Device ds0 created (id=2180637358).
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.
Jul 21 08:06:57 db kernel: GEOM_STRIPE: Disk mirror/dm2 attached to ds0.
Jul 21 08:06:58 db kernel: GEOM_STRIPE: Cannot add disk mirror/dm2c to ds0 (error=17).
Jul 21 08:06:58 db kernel: GEOM_STRIPE: Disk mirror/dm3 attached to ds0.
Jul 21 08:06:58 db kernel: GEOM_STRIPE: Cannot add disk mirror/dm3c to ds0 (error=17).
Jul 21 08:06:58 db kernel: GEOM_STRIPE: Disk mirror/dm4 attached to ds0.
Jul 21 08:06:58 db kernel: GEOM_STRIPE: Cannot add disk mirror/dm4c to ds0 (error=17).
Jul 21 08:06:58 db kernel: GEOM_STRIPE: Disk mirror/dm5 attached to ds0.
Jul 21 08:06:58 db kernel: GEOM_STRIPE: Device ds0 activated.
Jul 21 08:06:58 db kernel: GEOM_STRIPE: Cannot add disk mirror/dm5c to ds0 (error=17).

And it's odd that I do not get it for device dm1 (da1/da8). 

So, what am I doing wrong?

This is on 7.0-CURRENT amd64. Athlon X2 3600, 2GB ram

-- 
Tony Holmes

Ph: (416) 993-1219

Founder and Senior Systems Architect
Crosswinds Internet Communications Inc.