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Parameter Name Description Type
mode the mode the VBD should be
mounted with
read/write
type how the VBD appears to the
VM, for example disk or CD
read/write
currently-attached True if the VBD is currently
attached on this host, false
otherwise
read only
storage-lock True if a storage-level lock was
acquired
read only
status-code error/success code associated
with the last attach operation
read only
status-detail error/success information
associated with the last attach
operation status
read only
qos_algorithm_type the QoS algorithm to use read/write
qos_algorithm_params parameters for the chosen QoS
algorithm
read/write map parameter
qos_supported_algorithms supported QoS algorithms for
this VBD
read only set parameter
io_read_kbs average read rate in kB per
second for this VBD
read only
io_write_kbs average write rate in kB per
second for this VBD
read only
allowed-operations list of the operations allowed in
this state. This list is advisory
only and the server state may
have changed by the time this
field is read by a client.
read only set parameter
current-operations links each of the running tasks
using this object (by reference)
to a current_operation enum
which describes the nature of
the task.
read only set parameter
unpluggable true if this VBD will support hot-
unplug
read/write
attachable True if the device can be
attached
read only
other-config additional configuration read/write map parameter
vbd-create
vbd-create vm-uuid=<uuid_of_the_vm> device=<device_value>