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