## Path: System/xen## Description: xen domain start/stop on boot## Type: string## Default: ## The xendomains script can send SysRq requests to domains on shutdown.# If you don't want to MIGRATE, SAVE, or SHUTDOWN, this may be a possibility# to do a quick and dirty shutdown ("s e i u o") or at least sync the disks# of the domains ("s").#XENDOMAINS_SYSRQ=""## Type: integer ## Default: 100000## If XENDOMAINS_SYSRQ is set, this variable determines how long to wait# (in microseconds) after each SysRq, so the domain has a chance to react.# If you want to a quick'n'dirty shutdown via SysRq, you may want to set# it to a relatively high value (1200000).#XENDOMAINS_USLEEP=100000## Type: integer## Default: 5000000## When creating a guest domain, it is sensible to allow a little time for it# to get started before creating another domain or proceeding through the# boot process.  Without this, the booting guests will thrash the disk as they# start up.  This timeout (in microseconds) specifies the delay after guest# domain creation.#XENDOMAINS_CREATE_USLEEP=5000000## Type: string## Default: ""## Set this to a non-empty string if you want to migrate virtual machines# on shutdown. The string will be passed to the xm migrate DOMID command# as is: It should contain the target IP address of the physical machine# to migrate to and optionally parameters like --live. Leave empty if# you don't want to try virtual machine relocation on shutdown.# If migration succeeds, neither SAVE nor SHUTDOWN will be executed for# that domain.#XENDOMAINS_MIGRATE=""## Type: string## Default: /var/lib/xen/save## Directory to save running domains to when the system (dom0) is# shut down. Will also be used to restore domains from if # XENDOMAINS_RESTORE# is set (see below). Leave empty to disable domain saving on shutdown # (e.g. because you rather shut domains down).# If domain saving does succeed, SHUTDOWN will not be executed.#XENDOMAINS_SAVE=/var/lib/xen/save## Type: string## Default: "--halt --wait"## If neither MIGRATE nor SAVE were enabled or if they failed, you can# try to shut down a domain by sending it a shutdown request. To do this,# set this to "--halt --wait". Omit the "--wait" flag to avoid waiting# for the domain to be really down. Leave empty to skip domain shutdown.#XENDOMAINS_SHUTDOWN="--halt --wait"## Type: string## Default: "--all --halt --wait"## After we have gone over all virtual machines (resp. all automatically# started ones, see XENDOMAINS_AUTO_ONLY below) in a loop and sent SysRq,# migrated, saved and/or shutdown according to the settings above, we# might want to shutdown the virtual machines that are still running# for some reason or another. To do this, set this variable to# "--all --halt --wait", it will be passed to xm shutdown.# Leave it empty not to do anything special here.# (Note: This will hit all virtual machines, even if XENDOMAINS_AUTO_ONLY# is set.)# XENDOMAINS_SHUTDOWN_ALL="--all --halt --wait"## Type: boolean## Default: true## This variable determines whether saved domains from XENDOMAINS_SAVE# will be restored on system startup. #XENDOMAINS_RESTORE=true## Type: string## Default: /etc/xen/auto## This variable sets the directory where domains configurations# are stored that should be started on system startup automatically.# Leave empty if you don't want to start domains automatically# (or just don't place any xen domain config files in that dir).# Note that the script tries to be clever if both RESTORE and AUTO are # set: It will first restore saved domains and then only start domains# in AUTO which are not running yet. # Note that the name matching is somewhat fuzzy.#XENDOMAINS_AUTO=/etc/xen/auto## Type: boolean## Default: false# # If this variable is set to "true", only the domains started via config # files in XENDOMAINS_AUTO will be treated according to XENDOMAINS_SYSRQ,# XENDOMAINS_MIGRATE, XENDOMAINS_SAVE, XENDMAINS_SHUTDOWN; otherwise# all running domains will be. # Note that the name matching is somewhat fuzzy.# XENDOMAINS_AUTO_ONLY=false## Type: integer## Default: 300## On xendomains stop, a number of xm commands (xm migrate, save, shutdown,# shutdown --all) may be executed. In the worst case, these commands may# stall forever, which will prevent a successful shutdown of the machine.# If this variable is non-zero, the script will set up a watchdog timer# for every of these xm commands and time it out after the number of seconds# specified by this variable.# Note that SHUTDOWN_ALL will not be called if no virtual machines or only# zombies are still running, so you don't need to enable this timeout just# for the zombie case.# The setting should be large enough to make sure that migrate/save/shutdown# can succeed. If you do live migrations, keep in mind that live migration# of a 1GB machine over Gigabit ethernet may actually take something like# 100s (assuming that live migration uses 10% of the network # bandwidth).# Depending on the virtual machine, a shutdown may also require a significant# amount of time. So better setup this variable to a huge number and hope the# watchdog never fires.#XENDOMAINS_STOP_MAXWAIT=300