I'm guessing KVM hypervisor? If so, I had this problem and was related to some libvirt cache, I had to reboot the VM in order to be able to use the disk. Well not reboot, stop and start actually.
On Wed, Nov 28, 2012 at 6:26 PM, Jorge Suárez de Lis < y...@jorgesuarezdelis.name> wrote: > Hello, > > I'm trying to add an additional volume to a Ubuntu 12.04 guest on > Cloudstack 2.2.13 and I'm having some trouble getting it to work. > Cloudstack shouts no errors at all, everything seems fine outside the > virtualization. > > I can create new virtual machines with a Ubuntu 10.04 template without any > problem, but every virtual machine created with the Ubuntu 12.04 template > has no access to additional disks. > > Both 10.04 and 12.04 templates have been built by me. > > Please notice that the disks are recognized as vda, vdb... on 10.04 but the > root disk is recognized as sda on 12.04. I can't see a thing on dmesg. It's > like the disk doesn't exist at all. > > I'd appreciate some advice on this. How can I proceed now? > > Thank you. > > -- > Jorge Suárez de Lis <y...@jorgesuarezdelis.name> > http://jorgesuarezdelis.name/ >