Hi,

When someone calls nova volume-attach or the block-device-mapping parameter at boot, it is possible to specify a device name for the guest. However I couldn't find any guest OS which would honor this. E.g. with libvirt/kvm, if the guest has two virtio disks already (vda and vdb), specifying vdf would be ignored and the disk will be attached as vdc in the guest. I propose to deprecate this option and at boot where it is not optional to accept only auto as an option.

Best regards,

Geza

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