Today, I was trying to add a second Volume to a KVM guest, running CentOS 5.7 on a CentOS 5.7 host, with CLoudmin 5.7, with virtio block "driver".
I chose a mounting point (an empty dir on the guest), chose a size (There's plenty of room on the LVM Volume Group), and hitted "Create".
Then this is what I got :
Creating virtual disk on /dev/VolGroup00/xxxx_yyyyyy_net_2_img .. creation failed : QEMU 0.9.1 monitor - type 'help' for more information (qemu) p[K[Dpc[K[D[Dpci[K[D...
Then a big bunch of characters, and at the end : storage media=disk,file=/dev/VolGroup00/xxxx_yyyyyy_net_2_img,if=virtio[K Invalid pci address
Now the "/dev/vdb" is listed in Cloudmin and in /etc/fstab on the guest. The corresponding LVM Volume IS created on the host. But, even after reboot of the guest, it's not mounted in the guest and if I try to mount it,I get a message saying that /dev/vdb doesn't exist...
Deleted it, shutdown the guest, rebooted the host, tried again... for the same result.
Any idea ?