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emellor@leeni.uk.xensource.com
b043099b44
It now allows the user to configure what he wants to be done on xendomains stop: sysrq, migrate, save, or shutdown. For this to be safe, a timeout has been introduced (optional). On start, saved domains may be restored, and not yet started domains from the auto start dir will be started in addition. status reports missing domains, restart and reload work as well. The init script is somewhat SUSE-ish, but it should work on LSB compliant and on RH based distros as well. I would appreciate this to be put into tools/examples/init.d/ Signed-off-by: Kurt Garloff <garloff@suse.de>
127 lines
4.7 KiB
Plaintext
127 lines
4.7 KiB
Plaintext
## 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: 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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