Description of configuration options for hypervisor

Configuration option = Default value	Description
[DEFAULT]
default_ephemeral_format = None	(StrOpt) The default format an ephemeral_volume will be formatted with on creation.
force_raw_images = True	(BoolOpt) Force backing images to raw format
preallocate_images = none	(StrOpt) VM image preallocation mode: "none" => no storage provisioning is done up front, "space" => storage is fully allocated at instance start
rescue_timeout = 0	(IntOpt) Automatically unrescue an instance after N seconds. Set to 0 to disable.
timeout_nbd = 10	(IntOpt) Amount of time, in seconds, to wait for NBD device start up.
use_cow_images = True	(BoolOpt) Whether to use cow images
vcpu_pin_set = None	(StrOpt) Defines which pcpus that instance vcpus can use. For example, "4-12,^8,15"
virt_mkfs = []	(MultiStrOpt) Name of the mkfs commands for ephemeral device. The format is <os_type>=<mkfs command>
[libvirt]
block_migration_flag = VIR_MIGRATE_UNDEFINE_SOURCE, VIR_MIGRATE_PEER2PEER, VIR_MIGRATE_NON_SHARED_INC	(StrOpt) Migration flags to be set for block migration
disk_cachemodes =	(ListOpt) Specific cachemodes to use for different disk types e.g: file=directsync,block=none
images_rbd_ceph_conf =	(StrOpt) Path to the ceph configuration file to use
images_rbd_pool = rbd	(StrOpt) The RADOS pool in which rbd volumes are stored
images_type = default	(StrOpt) VM Images format. Acceptable values are: raw, qcow2, lvm, rbd, default. If default is specified, then use_cow_images flag is used instead of this one.
images_volume_group = None	(StrOpt) LVM Volume Group that is used for VM images, when you specify images_type=lvm.
inject_key = False	(BoolOpt) Inject the ssh public key at boot time
inject_partition = -2	(IntOpt) The partition to inject to : -2 => disable, -1 => inspect (libguestfs only), 0 => not partitioned, >0 => partition number
inject_password = False	(BoolOpt) Inject the admin password at boot time, without an agent.
iscsi_use_multipath = False	(BoolOpt) Use multipath connection of the iSCSI volume
iser_use_multipath = False	(BoolOpt) Use multipath connection of the iSER volume
rescue_image_id = None	(StrOpt) Rescue ami image. This will not be used if an image id is provided by the user.
rescue_kernel_id = None	(StrOpt) Rescue aki image
rescue_ramdisk_id = None	(StrOpt) Rescue ari image
snapshot_compression = False	(BoolOpt) Compress snapshot images when possible. This currently applies exclusively to qcow2 images
snapshot_image_format = None	(StrOpt) Snapshot image format (valid options are : raw, qcow2, vmdk, vdi). Defaults to same as source image
sparse_logical_volumes = False	(BoolOpt) Create sparse logical volumes (with virtualsize) if this flag is set to True.
use_usb_tablet = True	(BoolOpt) Sync virtual and real mouse cursors in Windows VMs
use_virtio_for_bridges = True	(BoolOpt) Use virtio for bridge interfaces with KVM/QEMU