Disk add error on OVM

Question

Oracle VM server release 2.1.2
Linux
Hi There,
I'm getting an error when I want to add a disk on OVM. There are all ready 16 disks (a-p), but gets error on 17th (p)
Error: ('cd81da11-4f92-0eeb-b6b2-d2f27521246f', 'VM_metrics')
Here is the config file :
name = "***o2db01"
memory = "8192"
disk = [ 'phy:/dev/mapper/mpath17,xvda,w',
'phy:/dev/mapper/mpath0,xvdb,w',
'phy:/dev/mapper/mpath1,xvdc,w',
'phy:/dev/mapper/mpath10,xvdd,w',
'phy:/dev/mapper/mpath11,xvde,w',
'phy:/dev/mapper/mpath12,xvdf,w',
'phy:/dev/mapper/mpath13,xvdg,w',
'phy:/dev/mapper/mpath14,xvdh,w',
'phy:/dev/mapper/mpath4,xvdi,w',
'phy:/dev/mapper/mpath5,xvdj,w',
'phy:/dev/mapper/mpath6,xvdk,w',
'phy:/dev/mapper/mpath7,xvdl,w',
'phy:/dev/mapper/mpath8,xvdm,w',
'phy:/dev/mapper/mpath9,xvdn,w',
'phy:/dev/mapper/mpath15,xvdo,w',
'phy:/dev/mapper/mpath19,xvdp,w',
'phy:/dev/mapper/mpath21,xvdq,w',
Is there a limit on the amount of disks that can be added?

Answer 1

Hi,
yes in OVM 2.1.2 there was a bug, allowing only 16 xvd* devices.
Workaround is to use /dev/sd* as device.
Better it would be to upgrade to OVM 2.2 where this is solved.
(Or even 3.0, but this is a major task).
Regards
Sebastian