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Yes a limit probably exists, and it looks like you've just reached it.

The virtual machine may only have a few virtual pci slots, that are used by the virtual disk controllers. Maybe you could try using scsi virtual disk controllers, as they should allow for more disks to be connected to each scsi bus. Only if you're not already using scsi controller, though...

Yes a limit probably exists, and it looks like you've just reached it.

The virtual machine may only have a few virtual pci slots, that are used by the virtual disk controllers. Maybe you could try using scsi virtual disk controllers, as they should allow for more disks to be connected to each scsi bus. Only if you're not already using scsi controller, though...

The error / limit is probably not openstack-specific, it's coming from the underlying virtualization software.

Yes a limit probably exists, and it looks like you've just reached it.

The virtual machine may only have a few virtual pci slots, that are used by the virtual disk controllers. Maybe you could try using scsi virtual disk controllers, as they should allow for more disks to be connected to each scsi bus. Only if you're not already using scsi controller, though...controllers.

The error / limit is probably not openstack-specific, it's coming from the underlying virtualization software.

Maybe you could try on bare KVM, without openstack, to see if this limit already exists there. And then try using scsi virtual disk controllers to alleviate the problem, as they should allow for more disks to be connected to each scsi bus. Only if you're not already using scsi controller, though...