Description of Xen configuration options

Configuration option = Default value	Description
[DEFAULT]
console_driver = nova.console.xvp.XVPConsoleProxy	(StrOpt) Driver to use for the console proxy
console_xvp_conf = /etc/xvp.conf	(StrOpt) Generated XVP conf file
console_xvp_conf_template = $pybasedir/nova/console/xvp.conf.template	(StrOpt) XVP conf template
console_xvp_log = /var/log/xvp.log	(StrOpt) XVP log file
console_xvp_multiplex_port = 5900	(IntOpt) Port for XVP to multiplex VNC connections on
console_xvp_pid = /var/run/xvp.pid	(StrOpt) XVP master process pid file
stub_compute = False	(BoolOpt) Stub calls to compute worker for tests
[libvirt]
xen_hvmloader_path = /usr/lib/xen/boot/hvmloader	(StrOpt) Location where the Xen hvmloader is kept
[xenserver]
agent_path = usr/sbin/xe-update-networking	(StrOpt) Specifies the path in which the XenAPI guest agent should be located. If the agent is present, network configuration is not injected into the image. Used if compute_driver=xenapi.XenAPIDriver and flat_injected=True
agent_resetnetwork_timeout = 60	(IntOpt) Number of seconds to wait for agent reply to resetnetwork request
agent_timeout = 30	(IntOpt) Number of seconds to wait for agent reply
agent_version_timeout = 300	(IntOpt) Number of seconds to wait for agent to be fully operational
cache_images = all	(StrOpt) Cache glance images locally. `all` will cache all images, `some` will only cache images that have the image_property `cache_in_nova=True`, and `none` turns off caching entirely
check_host = True	(BoolOpt) Ensure compute service is running on host XenAPI connects to.
connection_concurrent = 5	(IntOpt) Maximum number of concurrent XenAPI connections. Used only if compute_driver=xenapi.XenAPIDriver
connection_password = None	(StrOpt) Password for connection to XenServer/Xen Cloud Platform. Used only if compute_driver=xenapi.XenAPIDriver
connection_url = None	(StrOpt) URL for connection to XenServer/Xen Cloud Platform. A special value of unix://local can be used to connect to the local unix socket. Required if compute_driver=xenapi.XenAPIDriver
connection_username = root	(StrOpt) Username for connection to XenServer/Xen Cloud Platform. Used only if compute_driver=xenapi.XenAPIDriver
default_os_type = linux	(StrOpt) Default OS type
disable_agent = False	(BoolOpt) Disables the use of the XenAPI agent in any image regardless of what image properties are present.
image_compression_level = None	(IntOpt) Compression level for images, e.g., 9 for gzip -9. Range is 1-9, 9 being most compressed but most CPU intensive on dom0.
image_upload_handler = nova.virt.xenapi.image.glance.GlanceStore	(StrOpt) Dom0 plugin driver used to handle image uploads.
introduce_vdi_retry_wait = 20	(IntOpt) Number of seconds to wait for an SR to settle if the VDI does not exist when first introduced
ipxe_boot_menu_url = None	(StrOpt) URL to the iPXE boot menu
ipxe_mkisofs_cmd = mkisofs	(StrOpt) Name and optionally path of the tool used for ISO image creation
ipxe_network_name = None	(StrOpt) Name of network to use for booting iPXE ISOs
iqn_prefix = iqn.2010-10.org.openstack	(StrOpt) IQN Prefix
login_timeout = 10	(IntOpt) Timeout in seconds for XenAPI login.
max_kernel_ramdisk_size = 16777216	(IntOpt) Maximum size in bytes of kernel or ramdisk images
num_vbd_unplug_retries = 10	(IntOpt) Maximum number of retries to unplug VBD. if <=0, should try once and no retry
ovs_integration_bridge = xapi1	(StrOpt) Name of Integration Bridge used by Open vSwitch
remap_vbd_dev = False	(BoolOpt) Used to enable the remapping of VBD dev (Works around an issue in Ubuntu Maverick)
remap_vbd_dev_prefix = sd	(StrOpt) Specify prefix to remap VBD dev to (ex. /dev/xvdb -> /dev/sdb)
running_timeout = 60	(IntOpt) Number of seconds to wait for instance to go to running state
sparse_copy = True	(BoolOpt) Whether to use sparse_copy for copying data on a resize down (False will use standard dd). This speeds up resizes down considerably since large runs of zeros won't have to be rsynced
sr_base_path = /var/run/sr-mount	(StrOpt) Base path to the storage repository
sr_matching_filter = default-sr:true	(StrOpt) Filter for finding the SR to be used to install guest instances on. To use the Local Storage in default XenServer/XCP installations set this flag to other-config:i18n-key=local-storage. To select an SR with a different matching criteria, you could set it to other-config:my_favorite_sr=true. On the other hand, to fall back on the Default SR, as displayed by XenCenter, set this flag to: default-sr:true
target_host = None	(StrOpt) The iSCSI Target Host
target_port = 3260	(StrOpt) The iSCSI Target Port, default is port 3260
torrent_base_url = None	(StrOpt) Base URL for torrent files; must contain a slash character (see RFC 1808, step 6)
torrent_download_stall_cutoff = 600	(IntOpt) Number of seconds a download can remain at the same progress percentage w/o being considered a stall
torrent_images = none	(StrOpt) Whether or not to download images via Bit Torrent.
torrent_listen_port_end = 6891	(IntOpt) End of port range to listen on
torrent_listen_port_start = 6881	(IntOpt) Beginning of port range to listen on
torrent_max_last_accessed = 86400	(IntOpt) Cached torrent files not accessed within this number of seconds can be reaped
torrent_max_seeder_processes_per_host = 1	(IntOpt) Maximum number of seeder processes to run concurrently within a given dom0. (-1 = no limit)
torrent_seed_chance = 1.0	(FloatOpt) Probability that peer will become a seeder. (1.0 = 100%)
torrent_seed_duration = 3600	(IntOpt) Number of seconds after downloading an image via BitTorrent that it should be seeded for other peers.
use_agent_default = False	(BoolOpt) Determines if the XenAPI agent should be used when the image used does not contain a hint to declare if the agent is present or not. The hint is a glance property "xenapi_use_agent" that has the value "True" or "False". Note that waiting for the agent when it is not present will significantly increase server boot times.
use_join_force = True	(BoolOpt) To use for hosts with different CPUs
vhd_coalesce_max_attempts = 20	(IntOpt) Max number of times to poll for VHD to coalesce. Used only if compute_driver=xenapi.XenAPIDriver
vhd_coalesce_poll_interval = 5.0	(FloatOpt) The interval used for polling of coalescing vhds. Used only if compute_driver=xenapi.XenAPIDriver
vif_driver = nova.virt.xenapi.vif.XenAPIBridgeDriver	(StrOpt) The XenAPI VIF driver using XenServer Network APIs.