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def set_vhost_controller_coalescing(client, ctrlr, delay_base_us, iops_threshold):
"""Set coalescing for vhost controller.
Args:
ctrlr: controller name
delay_base_us: base delay time
iops_threshold: IOPS threshold when coalescing is enabled
"""
params = {
'ctrlr': ctrlr,
'delay_base_us': delay_base_us,
'iops_threshold': iops_threshold,
}
return client.call('set_vhost_controller_coalescing', params)
def construct_vhost_scsi_controller(client, ctrlr, cpumask=None):
"""Construct a vhost scsi controller.
Args:
ctrlr: controller name
cpumask: cpu mask for this controller
"""
params = {'ctrlr': ctrlr}
if cpumask:
params['cpumask'] = cpumask
return client.call('construct_vhost_scsi_controller', params)
def add_vhost_scsi_lun(client, ctrlr, scsi_target_num, bdev_name):
"""Add LUN to vhost scsi controller target.
Args:
ctrlr: controller name
scsi_target_num: target number to use
bdev_name: name of bdev to add to target
"""
params = {
'ctrlr': ctrlr,
'scsi_target_num': scsi_target_num,
'bdev_name': bdev_name,
}
return client.call('add_vhost_scsi_lun', params)
def remove_vhost_scsi_target(client, ctrlr, scsi_target_num):
"""Remove target from vhost scsi controller.
Args:
ctrlr: controller name to remove target from
scsi_target_num: number of target to remove from controller
"""
params = {
'ctrlr': ctrlr,
'scsi_target_num': scsi_target_num
}
return client.call('remove_vhost_scsi_target', params)
def construct_vhost_nvme_controller(client, ctrlr, io_queues, cpumask=None):
"""Construct vhost NVMe controller.
Args:
ctrlr: controller name
io_queues: number of IO queues for the controller
cpumask: cpu mask for this controller
"""
params = {
'ctrlr': ctrlr,
'io_queues': io_queues
}
if cpumask:
params['cpumask'] = cpumask
return client.call('construct_vhost_nvme_controller', params)
def add_vhost_nvme_ns(client, ctrlr, bdev_name):
"""Add namespace to vhost nvme controller.
Args:
ctrlr: controller name where to add a namespace
bdev_name: block device name for a new namespace
"""
params = {
'ctrlr': ctrlr,
'bdev_name': bdev_name,
}
return client.call('add_vhost_nvme_ns', params)
def construct_vhost_blk_controller(client, ctrlr, dev_name, cpumask=None, readonly=None):
"""Construct vhost BLK controller.
Args:
ctrlr: controller name
dev_name: device name to add to controller
cpumask: cpu mask for this controller
readonly: set controller as read-only
"""
params = {
'ctrlr': ctrlr,
'dev_name': dev_name,
}
if cpumask:
params['cpumask'] = cpumask
if readonly:
params['readonly'] = readonly
return client.call('construct_vhost_blk_controller', params)
def get_vhost_controllers(client, name=None):
"""Get information about configured vhost controllers.
Args:
name: controller name to query (optional; if omitted, query all controllers)
Returns:
List of vhost controllers.
"""
params = {}
if name:
params['name'] = name
return client.call('get_vhost_controllers', params)
def remove_vhost_controller(client, ctrlr):
"""Remove vhost controller from configuration.
Args:
ctrlr: controller name to remove
"""
params = {'ctrlr': ctrlr}
return client.call('remove_vhost_controller', params)
def construct_virtio_dev(client, name, trtype, traddr, dev_type, vq_count=None, vq_size=None):
"""Construct new virtio device using provided
transport type and device type.
Args:
name: name base for new created bdevs
trtype: virtio target transport type: pci or user
traddr: transport type specific target address: e.g. UNIX
domain socket path or BDF
dev_type: device type: blk or scsi
vq_count: number of virtual queues to be used
vq_size: size of each queue
"""
params = {
'name': name,
'trtype': trtype,
'traddr': traddr,
'dev_type': dev_type
}
if vq_count:
params['vq_count'] = vq_count
if vq_size:
params['vq_size'] = vq_size
return client.call('construct_virtio_dev', params)
def construct_virtio_user_scsi_bdev(client, path, name, vq_count=None, vq_size=None):
"""Connect to virtio user scsi device.
Args:
path: path to Virtio SCSI socket
name: use this name as base instead of 'VirtioScsiN'
vq_count: number of virtual queues to be used
vq_size: size of each queue
"""
params = {
'path': path,
'name': name,
}
if vq_count:
params['vq_count'] = vq_count
if vq_size:
params['vq_size'] = vq_size
return client.call('construct_virtio_user_scsi_bdev', params)
def construct_virtio_pci_scsi_bdev(client, pci_address, name):
"""Create a Virtio SCSI device from a virtio-pci device.
Args:
pci_address: PCI address in domain:bus:device.function format or
domain.bus.device.function format
name: Name for the virtio device. It will be inhereted by all created
bdevs, which are named n the following format:
<name>t<target_id>
"""
params = {
'pci_address': pci_address,
'name': name,
}
return client.call('construct_virtio_pci_scsi_bdev', params)
def remove_virtio_scsi_bdev(client, name):
"""Remove a Virtio-SCSI device
This will delete all bdevs exposed by this device.
Args:
name: virtio device name
"""
params = {'name': name}
return client.call('remove_virtio_scsi_bdev', params)
def remove_virtio_bdev(client, name):
"""Remove a Virtio device
This will delete all bdevs exposed by this device.
Args:
name: virtio device name
"""
params = {'name': name}
return client.call('remove_virtio_bdev', params)
def get_virtio_scsi_devs(client):
"""Get list of virtio scsi devices."""
return client.call('get_virtio_scsi_devs')
def construct_virtio_user_blk_bdev(client, path, name, vq_count=None, vq_size=None):
"""Connect to virtio user BLK device.
Args:
path: path to Virtio BLK socket
name: use this name as base instead of 'VirtioScsiN'
vq_count: number of virtual queues to be used
vq_size: size of each queue
"""
params = {
'path': path,
'name': name,
}
if vq_count:
params['vq_count'] = vq_count
if vq_size:
params['vq_size'] = vq_size
return client.call('construct_virtio_user_blk_bdev', params)
def construct_virtio_pci_blk_bdev(client, pci_address, name):
"""Create a Virtio Blk device from a virtio-pci device.
Args:
pci_address: PCI address in domain:bus:device.function format or
domain.bus.device.function format
name: name for the blk device
"""
params = {
'pci_address': pci_address,
'name': name,
}
return client.call('construct_virtio_pci_blk_bdev', params)
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