Sys::Virt::Domain(3) User Contributed Perl Documentation Sys::Virt::Domain(3)
NAME
Sys::Virt::Domain - Represent & manage a libvirt guest domain
DESCRIPTION
The "Sys::Virt::Domain" module represents a guest domain managed by the virtual machine monitor.
METHODS
my $id = $dom->get_id()
Returns an integer with a locally unique identifier for the domain.
my $uuid = $dom->get_uuid()
Returns a 16 byte long string containing the raw globally unique identifier (UUID) for the domain.
my $uuid = $dom->get_uuid_string()
Returns a printable string representation of the raw UUID, in the format 'XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX'.
my $name = $dom->get_name()
Returns a string with a locally unique name of the domain
my $hostname = $dom->get_hostname()
Returns a string representing the hostname of the guest
my $str = $dom->get_metadata($type, $uri, $flags =0)
Returns the metadata element of type $type associated with the domain. If $type is "Sys::Virt::Domain::METADATA_ELEMENT" then the $uri
parameter specifies the XML namespace to retrieve, otherwise $uri should be "undef". The optional $flags parameter defaults to zero.
$dom->set_metadata($type, $val, $key, $uri, $flags=0)
Sets the metadata element of type $type to hold the value $val. If $type is "Sys::Virt::Domain::METADATA_ELEMENT" then the $key and
$uri elements specify an XML namespace to use, otherwise they should both be "undef". The optional $flags parameter defaults to zero.
$dom->is_active()
Returns a true value if the domain is currently running
$dom->is_persistent()
Returns a true value if the domain has a persistent configuration file defined
$dom->is_updated()
Returns a true value if the domain is running and has a persistent configuration file defined that is out of date compared to the
current live config.
my $xml = $dom->get_xml_description($flags=0)
Returns an XML document containing a complete description of the domain's configuration. The optional $flags parameter controls
generation of the XML document, defaulting to 0 if omitted. It can be one or more of the XML DUMP constants listed later in this
document.
my $type = $dom->get_os_type()
Returns a string containing the name of the OS type running within the domain.
$dom->create($flags)
Start a domain whose configuration was previously defined using the "define_domain" method in Sys::Virt. The $flags parameter accepts
one of the DOMAIN CREATION constants documented later, and defaults to 0 if omitted.
$dom->create_with_files($fds, $flags)
Start a domain whose configuration was previously defined using the "define_domain" method in Sys::Virt. The $fds parameter is an array
of UNIX file descriptors which will be passed to the init process of the container. This is only supported with container based
virtualization.The $flags parameter accepts one of the DOMAIN CREATION constants documented later, and defaults to 0 if omitted.
$dom->undefine()
Remove the configuration associated with a domain previously defined with the "define_domain" method in Sys::Virt. If the domain is
running, you probably want to use the "shutdown" or "destroy" methods instead.
$dom->suspend()
Temporarily stop execution of the domain, allowing later continuation by calling the "resume" method.
$dom->resume()
Resume execution of a domain previously halted with the "suspend" method.
$dom->pm_wakeup()
Wakeup the guest from power management suspend state
$dom->pm_suspend_for_duration($target, $duration, $flags=0)
Tells the guest OS to enter the power management suspend state identified by $target. The $target parameter should be one of the NODE
SUSPEND CONTANTS listed in "Sys::Virt". The $duration specifies when the guest should automatically wakeup. The $flags parameter is
optional and defaults to zero.
$dom->save($filename)
Take a snapshot of the domain's state and save the information to the file named in the $filename parameter. The domain can later be
restored from this file with the "restore_domain" method on the Sys::Virt object.
$dom->managed_save($flags=0)
Take a snapshot of the domain's state and save the information to a managed save location. The domain will be automatically restored
with this state when it is next started. The $flags parameter is unused and defaults to zero.
$bool = $dom->has_managed_save_image($flags=0)
Return a non-zero value if the domain has a managed save image that will be used at next start. The $flags parameter is unused and
defaults to zero.
$dom->managed_save_remove($flags=0)
Remove the current managed save image, causing the guest to perform a full boot next time it is started. The $flags parameter is unused
and defaults to zero.
$dom->core_dump($filename[, $flags])
Trigger a core dump of the guest virtual machine, saving its memory image to $filename so it can be analysed by tools such as "crash".
The optional $flags flags parameter is currently unused and if omitted will default to 0.
$dom->destroy()
Immediately poweroff the machine. This is equivalent to removing the power plug. The guest OS is given no time to cleanup / save state.
For a clean poweroff sequence, use the "shutdown" method instead.
my $info = $dom->get_info()
Returns a hash reference summarising the execution state of the domain. The elements of the hash are as follows:
maxMem
The maximum memory allowed for this domain, in kilobytes
memory
The current memory allocated to the domain in kilobytes
cpuTime
The amount of CPU time used by the domain
nrVirtCpu
The current number of virtual CPUs enabled in the domain
state
The execution state of the machine, which will be one of the constants &Sys::Virt::Domain::STATE_*.
my ($state, $reason) = $dom->get_state()
Returns an array whose values specify the current state of the guest, and the reason for it being in that state. The $state values are
the same as for the "get_info" API, and the $reason values come from:
Sys::Virt::Domain::STATE_CRASHED_UNKNOWN
It is not known why the domain has crashed
Sys::Virt::Domain::STATE_CRASHED_PANICKED
The domain has crashed due to a kernel panic
Sys::Virt::Domain::STATE_NOSTATE_UNKNOWN
It is not known why the domain has no state
Sys::Virt::Domain::STATE_PAUSED_DUMP
The guest is paused due to a core dump operation
Sys::Virt::Domain::STATE_PAUSED_FROM_SNAPSHOT
The guest is paused due to a snapshot
Sys::Virt::Domain::STATE_PAUSED_IOERROR
The guest is paused due to an I/O error
Sys::Virt::Domain::STATE_PAUSED_MIGRATION
The guest is paused due to migration
Sys::Virt::Domain::STATE_PAUSED_SAVE
The guest is paused due to a save operation
Sys::Virt::Domain::STATE_PAUSED_UNKNOWN
It is not known why the domain has paused
Sys::Virt::Domain::STATE_PAUSED_USER
The guest is paused at admin request
Sys::Virt::Domain::STATE_PAUSED_WATCHDOG
The guest is paused due to the watchdog
Sys::Virt::Domain::STATE_PAUSED_SHUTTING_DOWN
The guest is paused while domain shutdown takes place
Sys::Virt::Domain::STATE_PAUSED_SNAPSHOT
The guest is paused while a snapshot takes place
Sys::Virt::Domain::STATE_PAUSED_CRASHED
The guest is paused due to a kernel panic
Sys::Virt::Domain::STATE_RUNNING_BOOTED
The guest is running after being booted
Sys::Virt::Domain::STATE_RUNNING_FROM_SNAPSHOT
The guest is running after restore from snapshot
Sys::Virt::Domain::STATE_RUNNING_MIGRATED
The guest is running after migration
Sys::Virt::Domain::STATE_RUNNING_MIGRATION_CANCELED
The guest is running after migration abort
Sys::Virt::Domain::STATE_RUNNING_RESTORED
The guest is running after restore from file
Sys::Virt::Domain::STATE_RUNNING_SAVE_CANCELED
The guest is running after save cancel
Sys::Virt::Domain::STATE_RUNNING_UNKNOWN
It is not known why the domain has started
Sys::Virt::Domain::STATE_RUNNING_UNPAUSED
The guest is running after a resume
Sys::Virt::Domain::STATE_RUNNING_WAKEUP
The guest is running after wakeup from power management suspend
Sys::Virt::Domain::STATE_RUNNING_CRASHED
The guest was restarted after crashing
Sys::Virt::Domain::STATE_BLOCKED_UNKNOWN
The guest is blocked for an unknown reason
Sys::Virt::Domain::STATE_SHUTDOWN_UNKNOWN
It is not known why the domain has shutdown
Sys::Virt::Domain::STATE_SHUTDOWN_USER
The guest is shutdown due to admin request
Sys::Virt::Domain::STATE_SHUTOFF_CRASHED
The guest is shutoff after a crash
Sys::Virt::Domain::STATE_SHUTOFF_DESTROYED
The guest is shutoff after being destroyed
Sys::Virt::Domain::STATE_SHUTOFF_FAILED
The guest is shutoff due to a virtualization failure
Sys::Virt::Domain::STATE_SHUTOFF_FROM_SNAPSHOT
The guest is shutoff after a snapshot
Sys::Virt::Domain::STATE_SHUTOFF_MIGRATED
The guest is shutoff after migration
Sys::Virt::Domain::STATE_SHUTOFF_SAVED
The guest is shutoff after a save
Sys::Virt::Domain::STATE_SHUTOFF_SHUTDOWN
The guest is shutoff due to controlled shutdown
Sys::Virt::Domain::STATE_SHUTOFF_UNKNOWN
It is not known why the domain has shutoff
Sys::Virt::Domain::STATE_PMSUSPENDED_UNKNOWN
It is not known why the domain was suspended to RAM
Sys::Virt::Domain::STATE_PMSUSPENDED_DISK_UNKNOWN
It is not known why the domain was suspended to disk
my $info = $dom->get_control_info($flags=0)
Returns a hash reference providing information about the control channel. The returned keys in the hash are
"state"
One of the CONTROL INFO constants listed later
"details"
Currently unsed, always 0.
"stateTime"
The elapsed time since the control channel entered the current state.
my @errs = $dom->get_disk_errors($flags=0)
Returns a list of all disk errors that have occurred on the backing store for the guest's virtual disks. The returned array elements
are hash references, containing two keys
"path"
The path of the disk with an error
"error"
The error type
$dom->send_key($keycodeset, $holdtime, @keycodes, $flags=0)
Sends a sequence of keycodes to the guest domain. The $keycodeset should be one of the constants listed later in the KEYCODE SET
section. $holdtiem is the duration, in milliseconds, to keep the key pressed before releasing it and sending the next keycode.
@keycodes is an array reference containing the list of keycodes to send to the guest. The elements in the array should be keycode
values from the specified keycode set. $flags is currently unused.
my $info = $dom->get_block_info($dev, $flags=0)
Returns a hash reference summarising the disk usage of the host backing store for a guest block device. The $dev parameter should be
the path to the backing store on the host. $flags is currently unused and defaults to 0 if omitted. The returned hash contains the
following elements
capacity
Logical size in bytes of the block device backing image *
allocation
Highest allocated extent in bytes of the block device backing image
physical
Physical size in bytes of the container of the backing image
$dom->set_max_memory($mem)
Set the maximum memory for the domain to the value $mem. The value of the $mem parameter is specified in kilobytes.
$mem = $dom->get_max_memory()
Returns the current maximum memory allowed for this domain in kilobytes.
$dom->set_memory($mem, $flags)
Set the current memory for the domain to the value $mem. The value of the $mem parameter is specified in kilobytes. This must be less
than, or equal to the domain's max memory limit. The $flags parameter can control whether the update affects the live guest, or
inactive config, defaulting to modifying the current state.
$dom->set_memory_stats_period($period, $flags)
Set the period on which guests memory stats are refreshed, with $period being a value in seconds. The $flags parameter is currently
unused.
$dom->shutdown()
Request that the guest OS perform a graceful shutdown and poweroff. This usually requires some form of cooperation from the guest
operating system, such as responding to an ACPI signal, or a guest agent process. For an immediate, forceful poweroff, use the
"destroy" method instead.
$dom->reboot([$flags])
Request that the guest OS perform a graceful shutdown and optionally restart. The optional $flags parameter is currently unused and if
omitted defaults to zero.
$dom->reset([$flags])
Perform a hardware reset of the virtual machine. The guest OS is given no opportunity to shutdown gracefully. The optional $flags
parameter is currently unused and if omitted defaults to zero.
$dom->get_max_vcpus()
Return the maximum number of vcpus that are configured for the domain
$dom->attach_device($xml[, $flags])
Hotplug a new device whose configuration is given by $xml, to the running guest. The optional <$flags> parameter defaults to 0, but can
accept one of the device hotplug flags described later.
$dom->detach_device($xml[, $flags])
Hotunplug a existing device whose configuration is given by $xml, from the running guest. The optional <$flags> parameter defaults to
0, but can accept one of the device hotplug flags described later.
$dom->update_device($xml[, $flags])
Update the configuration of an existing device. The new configuration is given by $xml. The optional <$flags> parameter defaults to 0
but can accept one of the device hotplug flags described later.
$data = $dom->block_peek($path, $offset, $size[, $flags])
Peek into the guest disk $path, at byte $offset capturing $size bytes of data. The returned scalar may contain embedded NULLs. The
optional $flags parameter is currently unused and if omitted defaults to zero.
$data = $dom->memory_peek($offset, $size[, $flags])
Peek into the guest memory at byte $offset virtual address, capturing $size bytes of memory. The return scalar may contain embedded
NULLs. The optional $flags parameter is currently unused and if omitted defaults to zero.
$flag = $dom->get_autostart();
Return a true value if the guest domain is configured to automatically start upon boot. Return false, otherwise
$dom->set_autostart($flag)
Set the state of the autostart flag, which determines whether the guest will automatically start upon boot of the host OS
$dom->set_vcpus($count, [$flags])
Set the number of virtual CPUs in the guest VM to $count. The optional $flags parameter can be used to control whether the setting
changes the live config or inactive config.
$count = $dom->get_vcpus([$flags])
Get the number of virtual CPUs in the guest VM. The optional $flags parameter can be used to control whether to query the setting of
the live config or inactive config.
$type = $dom->get_scheduler_type()
Return the scheduler type for the guest domain
$stats = $dom->block_stats($path)
Fetch the current I/O statistics for the block device given by $path. The returned hash reference contains keys for
"rd_req"
Number of read requests
"rd_bytes"
Number of bytes read
"wr_req"
Number of write requests
"wr_bytes"
Number of bytes written
"errs"
Some kind of error count
my $params = $dom->get_scheduler_parameters($flags=0)
Return the set of scheduler tunable parameters for the guest, as a hash reference. The precise set of keys in the hash are specific to
the hypervisor.
$dom->set_scheduler_parameters($params, $flags=0)
Update the set of scheduler tunable parameters. The value names for tunables vary, and can be discovered using the
"get_scheduler_params" call
my $params = $dom->get_memory_parameters($flags=0)
Return a hash reference containing the set of memory tunable parameters for the guest. The keys in the hash are one of the constants
MEMORY PARAMETERS described later. The $flags parameter accepts one or more the CONFIG OPTION constants documented later, and defaults
to 0 if omitted.
$dom->set_memory_parameters($params, $flags=0)
Update the memory tunable parameters for the guest. The $params should be a hash reference whose keys are one of the MEMORY PARAMETERS
constants. The $flags parameter accepts one or more the CONFIG OPTION constants documented later, and defaults to 0 if omitted.
my $params = $dom->get_blkio_parameters($flags=0)
Return a hash reference containing the set of blkio tunable parameters for the guest. The keys in the hash are one of the constants
BLKIO PARAMETERS described later. The $flags parameter accepts one or more the CONFIG OPTION constants documented later, and defaults
to 0 if omitted.
$dom->set_blkio_parameters($params, $flags=0)
Update the blkio tunable parameters for the guest. The $params should be a hash reference whose keys are one of the BLKIO PARAMETERS
constants. The $flags parameter accepts one or more the CONFIG OPTION constants documented later, and defaults to 0 if omitted.
$stats = $dom->get_block_iotune($disk, $flags=0)
Return a hash reference containing the set of blkio tunable parameters for the guest disk $disk. The keys in the hash are one of the
constants BLOCK IOTUNE PARAMETERS described later.
$dom->set_block_iotune($disk, $params, $flags=0);
Update the blkio tunable parameters for the guest disk $disk. The $params should be a hash reference whose keys are one of the BLOCK
IOTUNE PARAMETERS constants.
my $params = $dom->get_interface_parameters($intf, $flags=0)
Return a hash reference containing the set of interface tunable parameters for the guest. The keys in the hash are one of the constants
INTERFACE PARAMETERS described later.
$dom->set_interface_parameters($intf, $params, $flags=0)
Update the interface tunable parameters for the guest. The $params should be a hash reference whose keys are one of the INTERFACE
PARAMETERS constants.
my $params = $dom->get_numa_parameters($flags=0)
Return a hash reference containing the set of numa tunable parameters for the guest. The keys in the hash are one of the constants NUMA
PARAMETERS described later. The $flags parameter accepts one or more the CONFIG OPTION constants documented later, and defaults to 0 if
omitted.
$dom->set_numa_parameters($params, $flags=0)
Update the numa tunable parameters for the guest. The $params should be a hash reference whose keys are one of the NUMA PARAMETERS
constants. The $flags parameter accepts one or more the CONFIG OPTION constants documented later, and defaults to 0 if omitted.
$dom->block_resize($disk, $newsize, $flags=0)
Resize the disk $disk to have new size $newsize KB. If the disk is backed by a special image format, the actual resize is done by the
hypervisor. If the disk is backed by a raw file, or block device, the resize must be done prior to invoking this API call, and it
merely updates the hypervisor's view of the disk size. The following flags may be used
Sys::Virt::Domain::BLOCK_RESIZE_BYTES
Treat $newsize as if it were in bytes, rather than KB.
$dom->interface_stats($path)
Fetch the current I/O statistics for the block device given by $path. The returned hash containins keys for
"rx_bytes"
Total bytes received
"rx_packets"
Total packets received
"rx_errs"
Total packets received with errors
"rx_drop"
Total packets drop at reception
"tx_bytes"
Total bytes transmitted
"tx_packets"
Total packets transmitted
"tx_errs"
Total packets transmitted with errors
"tx_drop"
Total packets dropped at transmission.
$dom->memory_stats($flags=0)
Fetch the current memory statistics for the guest domain. The $flags parameter is currently unused and can be omitted. The returned
hash containins keys for
"swap_in"
Data read from swap space
"swap_out"
Data written to swap space
"major_fault"
Page fault involving disk I/O
"minor_fault"
Page fault not involving disk I/O
"unused"
Memory not used by the system
"available"
Total memory seen by guest
$info = $dom->get_security_label()
Fetch information about the security label assigned to the guest domain. The returned hash reference has two keys, "model" gives the
name of the security model in effect (eg "selinux"), while "label" provides the name of the security label applied to the domain. This
method only returns information about the first security label. To retrieve all labels, use "get_security_label_list".
@info = $dom->get_security_label_list()
Fetches information about all security labels assigned to the guest domain. The elements in the returned array are all hash references,
whose keys are as described for "get_security_label".
$ddom = $dom->migrate(destcon, \%params, flags=0)
Migrate a domain to an alternative host. The "destcon" parameter should be a "Sys::Virt" connection to the remote target host. The
"flags" parameter takes one or more of the "Sys::Virt::Domain::MIGRATE_XXX" constants described later in this document. The %params
parameter is a hash reference used to set various parameters for the migration operation, with the following valid keys.
"Sys::Virt::Domain::MIGRATE_PARAM_URI"
The URI to use for initializing the domain migration. It takes a hypervisor specific format. The uri_transports element of the
hypervisor capabilities XML includes details of the supported URI schemes. When omitted libvirt will auto-generate suitable default
URI. It is typically only necessary to specify this URI if the destination host has multiple interfaces and a specific interface is
required to transmit migration data.
"Sys::Virt::Domain::MIGRATE_PARAM_DEST_NAME"
The name to be used for the domain on the destination host. Omitting this parameter keeps the domain name the same. This field is
only allowed to be used with hypervisors that support domain renaming during migration.
"Sys::Virt::Domain::MIGRATE_PARAM_DEST_XML"
The new configuration to be used for the domain on the destination host. The configuration must include an identical set of
virtual devices, to ensure a stable guest ABI across migration. Only parameters related to host side configuration can be changed
in the XML. Hypervisors which support this field will forbid migration if the provided XML would cause a change in the guest ABI.
This field cannot be used to rename the domain during migration (use VIR_MIGRATE_PARAM_DEST_NAME field for that purpose). Domain
name in the destination XML must match the original domain name.
Omitting this parameter keeps the original domain configuration. Using this field with hypervisors that do not support changing
domain configuration during migration will result in a failure.
"Sys::Virt::Domain::MIGRATE_PARAM_GRAPHICS_URI"
URI to use for migrating client's connection to domain's graphical console as VIR_TYPED_PARAM_STRING. If specified, the client will
be asked to automatically reconnect using these parameters instead of the automatically computed ones. This can be useful if, e.g.,
the client does not have a direct access to the network virtualization hosts are connected to and needs to connect through a proxy.
The URI is formed as follows:
protocol://hostname[:port]/[?parameters]
where protocol is either "spice" or "vnc" and parameters is a list of protocol specific parameters separated by '&'. Currently
recognized parameters are "tlsPort" and "tlsSubject". For example,
spice://target.host.com:1234/?tlsPort=4567
"Sys::Virt::Domain::MIGRATE_PARAM_BANDWIDTH"
The maximum bandwidth (in MiB/s) that will be used for migration. If set to 0 or omitted, libvirt will choose a suitable default.
Some hypervisors do not support this feature and will return an error if this field is used and is not 0.
$ddom = $dom->migrate(destcon, flags=0, dname=undef, uri=undef, bandwidth=0)
Migrate a domain to an alternative host. Use of positional parameters with "migrate" is deprecated in favour of passing a hash
reference as described above.
$ddom = $dom->migrate2(destcon, dxml, flags, dname, uri, bandwidth)
Migrate a domain to an alternative host. This method is deprecated in favour of passing a hash ref to "migrate".
$ddom = $dom->migrate_to_uri(destcon, \%params, flags=0)
Migrate a domain to an alternative host. The "destri" parameter should be a valid libvirt connection URI for the remote target host.
The "flags" parameter takes one or more of the "Sys::Virt::Domain::MIGRATE_XXX" constants described later in this document. The %params
parameter is a hash reference used to set various parameters for the migration operation, with the same keys described for the
"migrate" API.
$dom->migrate_to_uri(desturi, flags, dname, bandwidth)
Migrate a domain to an alternative host. Use of positional parameters with "migrate_to_uri" is deprecated in favour of passing a hash
reference as described above.
$dom->migrate_to_uri2(dconnuri, miguri, dxml, flags, dname, bandwidth)
Migrate a domain to an alternative host. This method is deprecated in favour of passing a hash ref to "migrate_to_uri".
$dom->migrate_set_max_downtime($downtime, $flags)
Set the maximum allowed downtime during migration of the guest. A longer downtime makes it more likely that migration will complete, at
the cost of longer time blackout for the guest OS at the switch over point. The "downtime" parameter is measured in milliseconds. The
$flags parameter is currently unused and defaults to zero.
$dom->migrate_set_max_speed($bandwidth, $flags)
Set the maximum allowed bandwidth during migration of the guest. The "bandwidth" parameter is measured in MB/second. The $flags
parameter is currently unused and defaults to zero.
$bandwidth = $dom->migrate_get_max_speed($flag)
Get the maximum allowed bandwidth during migration fo the guest. The returned <bandwidth> value is measured in MB/second. The $flags
parameter is currently unused and defaults to zero.
$dom->migrate_set_compression_cache($cacheSize, $flags)
Set the maximum allowed compression cache size during migration of the guest. The "cacheSize" parameter is measured in bytes. The
$flags parameter is currently unused and defaults to zero.
$cacheSize = $dom->migrate_get_compression_cache($flag)
Get the maximum allowed compression cache size during migration of the guest. The returned <bandwidth> value is measured in bytes. The
$flags parameter is currently unused and defaults to zero.
$dom->inject_nmi($flags)
Trigger an NMI in the guest virtual machine. The $flags parameter is currently unused and defaults to 0.
$dom->open_console($st, $devname, $flags)
Open the text console for a serial, parallel or paravirt console device identified by $devname, connecting it to the stream $st. If
$devname is undefined, the default console will be opened. $st must be a "Sys::Virt::Stream" object used for bi-directional
communication with the console. $flags is currently unused, defaulting to 0.
$dom->open_channel($st, $devname, $flags)
Open the text console for a data channel device identified by $devname, connecting it to the stream $st. $st must be a
"Sys::Virt::Stream" object used for bi-directional communication with the channel. $flags is currently unused, defaulting to 0.
$dom->open_graphics($idx, $fd, $flags)
Open the graphics console for a guest, identified by $idx, counting from 0. The $fd should be a file descriptor for an anoymous socket
pair. The $flags argument should be one of the constants listed at the end of this document, and defaults to 0.
my $mimetype = $dom->screenshot($st, $screen, $flags)
Capture a screenshot of the virtual machine's monitor. The $screen parameter controls which monitor is captured when using a multi-head
or multi-card configuration. $st must be a "Sys::Virt::Stream" object from which the data can be read. $flags is currently unused and
defaults to 0. The mimetype of the screenshot is returned
@vcpuinfo = $dom->get_vcpu_info($flags=0)
Obtain information about the state of all virtual CPUs in a running guest domain. The returned list will have one element for each
vCPU, where each elements contains a hash reference. The keys in the hash are, "number" the vCPU number, "cpu" the physical CPU on
which the vCPU is currently scheduled, "cpuTime" the cummulative execution time of the vCPU, "state" the running state and "affinity"
giving the allowed shedular placement. The value for "affinity" is a string representing a bitmask against physical CPUs, 8 cpus per
character. To extract the bits use the "unpack" function with the "b*" template. NB The "state", "cpuTime", "cpu" values are only
available if using $flags value of 0, and the domain is currently running; otherwise they will all be set to zero.
$dom->pin_vcpu($vcpu, $mask)
Pin the virtual CPU given by index $vcpu to physical CPUs given by $mask. The $mask is a string representing a bitmask against physical
CPUs, 8 cpus per character.
$mask = $dom->get_emulator_pin_info()
Obtain information about the CPU affinity of the emulator process. The returned $mask is a bitstring against physical CPUs, 8 cpus per
character. To extract the bits use the "unpack" function with the "b*" template.
$dom->pin_emulator($newmask, $flags=0)
Pin the emulator threads to the physical CPUs identified by the affinity in $newmask. The $newmask is a bitstring against the physical
CPUa, 8 cpus per character. To create a suitable bitstring, use the "vec" function with a value of 1 for the "BITS" parameter.
my @stats = $dom->get_cpu_stats($startCpu, $numCpus, $flags=0)
Requests the guests host physical CPU usage statistics, starting from host CPU <$startCpu> counting upto $numCpus. If $startCpu is -1
and $numCpus is 1, then the utilization across all CPUs is returned. Returns an array of hash references, each element containing stats
for one CPU.
my $info = $dom->get_job_info()
Returns a hash reference summarising the execution state of the background job. The elements of the hash are as follows:
type
The type of job, one of the JOB TYPE constants listed later in this document.
timeElapsed
The elapsed time in milliseconds
timeRemaining
The expected remaining time in milliseconds. Only set if the "type" is JOB_UNBOUNDED.
dataTotal
The total amount of data expected to be processed by the job, in bytes.
dataProcessed
The current amount of data processed by the job, in bytes.
dataRemaining
The expected amount of data remaining to be processed by the job, in bytes.
memTotal
The total amount of mem expected to be processed by the job, in bytes.
memProcessed
The current amount of mem processed by the job, in bytes.
memRemaining
The expected amount of mem remaining to be processed by the job, in bytes.
fileTotal
The total amount of file expected to be processed by the job, in bytes.
fileProcessed
The current amount of file processed by the job, in bytes.
fileRemaining
The expected amount of file remaining to be processed by the job, in bytes.
my ($type, $stats) = $dom->get_job_stats()
Returns an array summarising the execution state of the background job. The $type value is one of the JOB TYPE constants listed later
in this document. The $stats value is a hash reference, whose elements are one of the following constants.
type
The type of job, one of the JOB TYPE constants listed later in this document.
Sys::Virt::Domain::JOB_TIME_ELAPSED
The elapsed time in milliseconds
Sys::Virt::Domain::JOB_TIME_REMAINING
The expected remaining time in milliseconds. Only set if the "type" is JOB_UNBOUNDED.
Sys::Virt::Domain::JOB_DATA_TOTAL
The total amount of data expected to be processed by the job, in bytes.
Sys::Virt::Domain::JOB_DATA_PROCESSED
The current amount of data processed by the job, in bytes.
Sys::Virt::Domain::JOB_DATA_REMAINING
The expected amount of data remaining to be processed by the job, in bytes.
Sys::Virt::Domain::JOB_MEMORY_TOTAL
The total amount of mem expected to be processed by the job, in bytes.
Sys::Virt::Domain::JOB_MEMORY_PROCESSED
The current amount of mem processed by the job, in bytes.
Sys::Virt::Domain::JOB_MEMORY_REMAINING
The expected amount of mem remaining to be processed by the job, in bytes.
Sys::Virt::Domain::JOB_MEMORY_CONSTANT
The number of pages filled with a constant byte which have been transferred
Sys::Virt::Domain::JOB_MEMORY_NORMAL
The number of pages transferred without any compression
Sys::Virt::Domain::JOB_MEMORY_NORMAL_BYTES
The number of bytes transferred without any compression
Sys::Virt::Domain::JOB_DISK_TOTAL
The total amount of file expected to be processed by the job, in bytes.
Sys::Virt::Domain::JOB_DISK_PROCESSED
The current amount of file processed by the job, in bytes.
Sys::Virt::Domain::JOB_DISK_REMAINING
The expected amount of file remaining to be processed by the job, in bytes.
Sys::Virt::Domain::JOB_COMPRESSION_CACHE
The size of the compression cache in bytes
Sys::Virt::Domain::JOB_COMPRESSION_BYTES
The number of compressed bytes transferred
Sys::Virt::Domain::JOB_COMPRESSION_PAGES
The number of compressed pages transferred
Sys::Virt::Domain::JOB_COMPRESSION_CACHE_MISSES
The number of changing pages not in compression cache
Sys::Virt::Domain::JOB_COMPRESSION_OVERFLOW
The number of changing pages in the compression cache but sent uncompressed since the compressed page was larger than the non-
compressed page.
Sys::Virt::Domain::JOB_DOWNTIME
The number of milliseconds of downtime expected during migration switchover.
$dom->abort_job()
Aborts the currently executing job
my $info = $dom->get_block_job_info($path, $flags=0)
Returns a hash reference summarising the execution state of the block job. The $path parameter should be the fully qualified path of
the block device being changed.
$dom->set_block_job_speed($path, $bandwidth, $flags=0)
Change the maximum I/O bandwidth used by the block job that is currently executing for $path. The $bandwidth argument is specified in
MB/s
$dom->abort_block_job($path, $flags=0)
Abort the current job that is executing for the block device associated with $path
$dom->block_pull($path, $bandwith, $flags=0)
Merge the backing files associated with $path into the top level file. The $bandwidth parameter specifies the maximum I/O rate to allow
in MB/s.
$dom->block_rebase($path, $base, $bandwith, $flags=0)
Switch the backing path associated with $path to instead use $base. The $bandwidth parameter specifies the maximum I/O rate to allow in
MB/s.
$dom->block_commit($path, $base, $top, $bandwith, $flags=0)
Commit changes there were made to the temporary top level file $top. Takes all the differences between $top and $base and merge them
into $base. The $bandwidth parameter specifies the maximum I/O rate to allow in MB/s.
$count = $dom->num_of_snapshots()
Return the number of saved snapshots of the domain
@names = $dom->list_snapshot_names()
List the names of all saved snapshots. The names can be used with the "lookup_snapshot_by_name"
@snapshots = $dom->list_snapshots()
Return a list of all snapshots currently known to the domain. The elements in the returned list are instances of the
Sys::Virt::DomainSnapshot class. This method requires O(n) RPC calls, so the "list_all_snapshots" method is recommended as a more
efficient alternative.
my @snapshots = $dom->list_all_snapshots($flags)
Return a list of all domain snapshots associated with this domain. The elements in the returned list are instances of the
Sys::Virt::DomainSnapshot class. The $flags parameter can be used to filter the list of return domain snapshots.
my $snapshot = $dom->get_snapshot_by_name($name)
Return the domain snapshot with a name of $name. The returned object is an instance of the Sys::Virt::DomainSnapshot class.
$dom->has_current_snapshot()
Returns a true value if the domain has a currently active snapshot
$snapshot = $dom->current_snapshot()
Returns the currently active snapshot for the domain.
$snapshot = $dom->create_snapshot($xml[, $flags])
Create a new snapshot from the $xml. The $flags parameter accepts the SNAPSHOT CREATION constants listed in
"Sys::Virt::DomainSnapshots".
$dom->fs_trim($mountPoint, $minimum, $flags=0);
Issue an FS_TRIM command to the device at $mountPoint to remove chunks of unused space that are at least $minimum bytes in length.
$flags is currently unused and defaults to zero.
$dom->send_process_signal($pid, $signum, $flags=0);
Send the process $pid the signal $signum. The $signum value must be one of the constants listed later, not a POSIX or Linux signal
value. $flags is currently unused and defaults to zero.
CONSTANTS
A number of the APIs take a "flags" parameter. In most cases passing a value of zero will be satisfactory. Some APIs, however, accept named
constants to alter their behaviour. This section documents the current known constants.
DOMAIN STATE
The domain state constants are useful in interpreting the "state" key in the hash returned by the "get_info" method.
Sys::Virt::Domain::STATE_NOSTATE
The domain is active, but is not running / blocked (eg idle)
Sys::Virt::Domain::STATE_RUNNING
The domain is active and running
Sys::Virt::Domain::STATE_BLOCKED
The domain is active, but execution is blocked
Sys::Virt::Domain::STATE_PAUSED
The domain is active, but execution has been paused
Sys::Virt::Domain::STATE_SHUTDOWN
The domain is active, but in the shutdown phase
Sys::Virt::Domain::STATE_SHUTOFF
The domain is inactive, and shut down.
Sys::Virt::Domain::STATE_CRASHED
The domain is inactive, and crashed.
Sys::Virt::Domain::STATE_PMSUSPENDED
The domain is active, but in power management suspend state
CONTROL INFO
The following constants can be used to determine what the guest domain control channel status is
Sys::Virt::Domain::CONTROL_ERROR
The control channel has a fatal error
Sys::Virt::Domain::CONTROL_OK
The control channel is ready for jobs
Sys::Virt::Domain::CONTROL_OCCUPIED
The control channel is busy
Sys::Virt::Domain::CONTROL_JOB
The control channel is busy with a job
DOMAIN CREATION
The following constants can be used to control the behaviour of domain creation
Sys::Virt::Domain::START_PAUSED
Keep the guest vCPUs paused after starting the guest
Sys::Virt::Domain::START_AUTODESTROY
Automatically destroy the guest when the connection is closed (or fails)
Sys::Virt::Domain::START_BYPASS_CACHE
Do not use OS I/O cache if starting a domain with a saved state image
Sys::Virt::Domain::START_FORCE_BOOT
Boot the guest, even if there was a saved snapshot
KEYCODE SETS
The following constants define the set of supported keycode sets
Sys::Virt::Domain::KEYCODE_SET_LINUX
The Linux event subsystem keycodes
Sys::Virt::Domain::KEYCODE_SET_XT
The original XT keycodes
Sys::Virt::Domain::KEYCODE_SET_ATSET1
The AT Set1 keycodes (aka XT)
Sys::Virt::Domain::KEYCODE_SET_ATSET2
The AT Set2 keycodes (aka AT)
Sys::Virt::Domain::KEYCODE_SET_ATSET3
The AT Set3 keycodes (aka PS2)
Sys::Virt::Domain::KEYCODE_SET_OSX
The OS-X keycodes
Sys::Virt::Domain::KEYCODE_SET_XT_KBD
The XT keycodes from the Linux Keyboard driver
Sys::Virt::Domain::KEYCODE_SET_USB
The USB HID keycode set
Sys::Virt::Domain::KEYCODE_SET_WIN32
The Windows keycode set
Sys::Virt::Domain::KEYCODE_SET_RFB
The XT keycode set, with the extended scancodes using the high bit of the first byte, instead of the low bit of the second byte.
MEMORY PEEK
The following constants can be used with the "memory_peek" method's flags parameter
Sys::Virt::Domain::MEMORY_VIRTUAL
Indicates that the offset is using virtual memory addressing.
Sys::Virt::Domain::MEMORY_PHYSICAL
Indicates that the offset is using physical memory addressing.
VCPU STATE
The following constants are useful when interpreting the virtual CPU run state
Sys::Virt::Domain::VCPU_OFFLINE
The virtual CPU is not online
Sys::Virt::Domain::VCPU_RUNNING
The virtual CPU is executing code
Sys::Virt::Domain::VCPU_BLOCKED
The virtual CPU is waiting to be scheduled
OPEN GRAPHICS CONSTANTS
The following constants are used when opening a connection to the guest graphics server
Sys::Virt::Domain::OPEN_GRAPHICS_SKIPAUTH
Skip authentication of the client
OPEN CONSOLE CONSTANTS
The following constants are used when opening a connection to the guest console
Sys::Virt::Domain::OPEN_CONSOLE_FORCE
Force opening of the console, disconnecting any other open session
Sys::Virt::Domain::OPEN_CONSOLE_SAFE
Check if the console driver supports safe operations
OPEN CHANNEL CONSTANTS
The following constants are used when opening a connection to the guest channel
Sys::Virt::Domain::OPEN_CHANNEL_FORCE
Force opening of the channel, disconnecting any other open session
XML DUMP OPTIONS
The following constants are used to control the information included in the XML configuration dump
Sys::Virt::Domain::XML_INACTIVE
Report the persistent inactive configuration for the guest, even if it is currently running.
Sys::Virt::Domain::XML_SECURE
Include security sensitive information in the XML dump, such as passwords.
Sys::Virt::Domain::XML_UPDATE_CPU
Update the CPU model definition to match the current executing state.
Sys::Virt::Domain::XML_MIGRATABLE
Update the XML to allow migration to older versions of libvirt
DEVICE HOTPLUG OPTIONS
The following constants are used to control device hotplug operations
Sys::Virt::Domain::DEVICE_MODIFY_CURRENT
Modify the domain in its current state
Sys::Virt::Domain::DEVICE_MODIFY_LIVE
Modify only the live state of the domain
Sys::Virt::Domain::DEVICE_MODIFY_CONFIG
Modify only the persistent config of the domain
Sys::Virt::Domain::DEVICE_MODIFY_FORCE
Force the device to be modified
MEMORY OPTIONS
The following constants are used to control memory change operations
Sys::Virt::Domain::MEM_CURRENT
Modify the current state
Sys::Virt::Domain::MEM_LIVE
Modify only the live state of the domain
Sys::Virt::Domain::MEM_CONFIG
Modify only the persistent config of the domain
Sys::Virt::Domain::MEM_MAXIMUM
Modify the maximum memory value
CONFIG OPTIONS
The following constants are used to control what configuration a domain update changes
Sys::Virt::Domain::AFFECT_CURRENT
Modify the current state
Sys::Virt::Domain::AFFECT_LIVE
Modify only the live state of the domain
Sys::Virt::Domain::AFFECT_CONFIG
Modify only the persistent config of the domain
MIGRATE OPTIONS
The following constants are used to control how migration is performed
Sys::Virt::Domain::MIGRATE_LIVE
Migrate the guest without interrupting its execution on the source host.
Sys::Virt::Domain::MIGRATE_PEER2PEER
Manage the migration process over a direct peer-2-peer connection between the source and destination host libvirtd daemons.
Sys::Virt::Domain::MIGRATE_TUNNELLED
Tunnel the migration data over the libvirt daemon connection, rather than the native hypervisor data transport. Requires PEER2PEER flag
to be set.
Sys::Virt::Domain::MIGRATE_PERSIST_DEST
Make the domain persistent on the destination host, defining its configuration file upon completion of migration.
Sys::Virt::Domain::MIGRATE_UNDEFINE_SOURCE
Remove the domain's persistent configuration after migration completes successfully.
Sys::Virt::Domain::MIGRATE_PAUSED
Do not re-start execution of the guest CPUs on the destination host after migration completes.
Sys::Virt::Domain::MIGRATE_NON_SHARED_DISK
Copy the complete contents of the disk images during migration
Sys::Virt::Domain::MIGRATE_NON_SHARED_INC
Copy the incrementally changed contents of the disk images during migration
Sys::Virt::Domain::MIGRATE_CHANGE_PROTECTION
Do not allow changes to the virtual domain configuration while migration is taking place. This option is automatically implied if doing
a peer-2-peer migration.
Sys::Virt::Domain::MIGRATE_UNSAFE
Migrate even if the compatibility check indicates the migration will be unsafe to the guest.
Sys::Virt::Domain::MIGRATE_OFFLINE
Migrate the guest config if the guest is not currently running
Sys::Virt::Domain::MIGRATE_COMPRESSED
Enable compression of the migration data stream
Sys::Virt::Domain::MIGRATE_ABORT_ON_ERROR
Abort if an I/O error occurrs on the disk
UNDEFINE CONSTANTS
The following constants can be used when undefining virtual domain configurations
Sys::Virt::Domain::UNDEFINE_MANAGED_SAVE
Also remove any managed save image when undefining the virtual domain
Sys::Virt::Domain::UNDEFINE_SNAPSHOTS_METADATA
Also remove any snapshot metadata when undefining the virtual domain.
JOB TYPES
The following constants describe the different background job types.
Sys::Virt::Domain::JOB_NONE
No job is active
Sys::Virt::Domain::JOB_BOUNDED
A job with a finite completion time is active
Sys::Virt::Domain::JOB_UNBOUNDED
A job with an unbounded completion time is active
Sys::Virt::Domain::JOB_COMPLETED
The job has finished, but isn't cleaned up
Sys::Virt::Domain::JOB_FAILED
The job has hit an error, but isn't cleaned up
Sys::Virt::Domain::JOB_CANCELLED
The job was aborted at user request, but isn't cleaned up
MEMORY PARAMETERS
The following constants are useful when getting/setting memory parameters for guests
Sys::Virt::Domain::MEMORY_HARD_LIMIT
The maximum memory the guest can use.
Sys::Virt::Domain::MEMORY_SOFT_LIMIT
The memory upper limit enforced during memory contention.
Sys::Virt::Domain::MEMORY_MIN_GUARANTEE
The minimum memory guaranteed to be reserved for the guest.
Sys::Virt::Domain::MEMORY_SWAP_HARD_LIMIT
The maximum swap the guest can use.
Sys::Virt::Domain::MEMORY_PARAM_UNLIMITED
The value of an unlimited memory parameter
BLKIO PARAMETERS
The following parameters control I/O tuning for the domain as a whole
Sys::Virt::Domain::BLKIO_WEIGHT
The I/O weight parameter
Sys::Virt::Domain::BLKIO_DEVICE_WEIGHT
The per-device I/O weight parameter
BLKIO TUNING PARAMETERS
The following parameters control I/O tuning for an individual guest disk.
Sys::Virt::Domain::BLOCK_IOTUNE_TOTAL_BYTES_SEC
The total bytes processed per second.
Sys::Virt::Domain::BLOCK_IOTUNE_READ_BYTES_SEC
The bytes read per second.
Sys::Virt::Domain::BLOCK_IOTUNE_WRITE_BYTES_SEC
The bytes written per second.
Sys::Virt::Domain::BLOCK_IOTUNE_TOTAL_IOPS_SEC
The total I/O operations processed per second.
Sys::Virt::Domain::BLOCK_IOTUNE_READ_IOPS_SEC
The I/O operations read per second.
Sys::Virt::Domain::BLOCK_IOTUNE_WRITE_IOPS_SEC
The I/O operations written per second.
SCHEDULER CONSTANTS
Sys::Virt::Domain::SCHEDULER_CAP
The VM cap tunable
Sys::Virt::Domain::SCHEDULER_CPU_SHARES
The CPU shares tunable
Sys::Virt::Domain::SCHEDULER_LIMIT
The VM limit tunable
Sys::Virt::Domain::SCHEDULER_RESERVATION
The VM reservation tunable
Sys::Virt::Domain::SCHEDULER_SHARES
The VM shares tunable
Sys::Virt::Domain::SCHEDULER_VCPU_PERIOD
The VCPU period tunable
Sys::Virt::Domain::SCHEDULER_VCPU_QUOTA
The VCPU quota tunable
Sys::Virt::Domain::SCHEDULER_WEIGHT
The VM weight tunable
NUMA PARAMETERS
The following constants are useful when getting/setting the guest NUMA memory policy
Sys::Virt::Domain::NUMA_MODE
The NUMA policy mode
Sys::Virt::Domain::NUMA_NODESET
The NUMA nodeset mask
The following constants are useful when interpreting the "Sys::Virt::Domain::NUMA_MODE" parameter value
Sys::Virt::Domain::NUMATUNE_MEM_STRICT
Allocation is mandatory from the mask nodes
Sys::Virt::Domain::NUMATUNE_MEM_PREFERRED
Allocation is preferred from the masked nodes
Sys::Virt::Domain::NUMATUNE_MEM_INTERLEAVE
Allocation is interleaved across all masked nods
INTERFACE PARAMETERS
The following constants are useful when getting/setting the per network interface tunable parameters
Sys::Virt::Domain::BANDWIDTH_IN_AVERAGE
The average inbound bandwidth
Sys::Virt::Domain::BANDWIDTH_IN_PEAK
The peak inbound bandwidth
Sys::Virt::Domain::BANDWIDTH_IN_BURST
The burstable inbound bandwidth
Sys::Virt::Domain::BANDWIDTH_OUT_AVERAGE
The average outbound bandwidth
Sys::Virt::Domain::BANDWIDTH_OUT_PEAK
The peak outbound bandwidth
Sys::Virt::Domain::BANDWIDTH_OUT_BURST
The burstable outbound bandwidth
VCPU FLAGS
The following constants are useful when getting/setting the VCPU count for a guest
Sys::Virt::Domain::VCPU_LIVE
Flag to request the live value
Sys::Virt::Domain::VCPU_CONFIG
Flag to request the persistent config value
Sys::Virt::Domain::VCPU_CURRENT
Flag to request the current config value
Sys::Virt::Domain::VCPU_MAXIMUM
Flag to request adjustment of the maximum vCPU value
Sys::Virt::Domain::VCPU_GUEST
Flag to request the guest VCPU mask
STATE CHANGE EVENTS
The following constants allow domain state change events to be interpreted. The events contain both a state change, and a reason.
Sys::Virt::Domain::EVENT_DEFINED
Indicates that a persistent configuration has been defined for the domain.
Sys::Virt::Domain::EVENT_DEFINED_ADDED
The defined configuration is newly added
Sys::Virt::Domain::EVENT_DEFINED_UPDATED
The defined configuration is an update to an existing configuration
Sys::Virt::Domain::EVENT_RESUMED
The domain has resumed execution
Sys::Virt::Domain::EVENT_RESUMED_MIGRATED
The domain resumed because migration has completed. This is emitted on the destination host.
Sys::Virt::Domain::EVENT_RESUMED_UNPAUSED
The domain resumed because the admin unpaused it.
Sys::Virt::Domain::EVENT_RESUMED_FROM_SNAPSHOT
The domain resumed because it was restored from a snapshot
Sys::Virt::Domain::EVENT_STARTED
The domain has started running
Sys::Virt::Domain::EVENT_STARTED_BOOTED
The domain was booted from shutoff state
Sys::Virt::Domain::EVENT_STARTED_MIGRATED
The domain started due to an incoming migration
Sys::Virt::Domain::EVENT_STARTED_RESTORED
The domain was restored from saved state file
Sys::Virt::Domain::EVENT_STARTED_FROM_SNAPSHOT
The domain was restored from a snapshot
Sys::Virt::Domain::EVENT_STARTED_WAKEUP
The domain was woken up from suspend
Sys::Virt::Domain::EVENT_STOPPED
The domain has stopped running
Sys::Virt::Domain::EVENT_STOPPED_CRASHED
The domain stopped because guest operating system has crashed
Sys::Virt::Domain::EVENT_STOPPED_DESTROYED
The domain stopped because administrator issued a destroy command.
Sys::Virt::Domain::EVENT_STOPPED_FAILED
The domain stopped because of a fault in the host virtualization environment.
Sys::Virt::Domain::EVENT_STOPPED_MIGRATED
The domain stopped because it was migrated to another machine.
Sys::Virt::Domain::EVENT_STOPPED_SAVED
The domain was saved to a state file
Sys::Virt::Domain::EVENT_STOPPED_SHUTDOWN
The domain stopped due to graceful shutdown of the guest.
Sys::Virt::Domain::EVENT_STOPPED_FROM_SNAPSHOT
The domain was stopped due to a snapshot
Sys::Virt::Domain::EVENT_SHUTDOWN
The domain has shutdown but is not yet stopped
Sys::Virt::Domain::EVENT_SHUTDOWN_FINISHED
The domain finished shutting down
Sys::Virt::Domain::EVENT_SUSPENDED
The domain has stopped executing, but still exists
Sys::Virt::Domain::EVENT_SUSPENDED_MIGRATED
The domain has been suspended due to offline migration
Sys::Virt::Domain::EVENT_SUSPENDED_PAUSED
The domain has been suspended due to administrator pause request.
Sys::Virt::Domain::EVENT_SUSPENDED_IOERROR
The domain has been suspended due to a block device I/O error.
Sys::Virt::Domain::EVENT_SUSPENDED_FROM_SNAPSHOT
The domain has been suspended due to resume from snapshot
Sys::Virt::Domain::EVENT_SUSPENDED_WATCHDOG
The domain has been suspended due to the watchdog triggering
Sys::Virt::Domain::EVENT_SUSPENDED_RESTORED
The domain has been suspended due to restore from saved state
Sys::Virt::Domain::EVENT_SUSPENDED_API_ERROR
The domain has been suspended due to an API error
Sys::Virt::Domain::EVENT_UNDEFINED
The persistent configuration has gone away
Sys::Virt::Domain::EVENT_UNDEFINED_REMOVED
The domain configuration has gone away due to it being removed by administrator.
Sys::Virt::Domain::EVENT_PMSUSPENDED
The domain has stopped running
Sys::Virt::Domain::EVENT_PMSUSPENDED_MEMORY
The domain has suspend to RAM.
Sys::Virt::Domain::EVENT_PMSUSPENDED_DISK
The domain has suspend to Disk.
Sys::Virt::Domain::EVENT_CRASHED
The domain has crashed
Sys::Virt::Domain::EVENT_CRASHED_PANICKED
The domain has crashed due to a kernel panic
EVENT ID CONSTANTS
Sys::Virt::Domain::EVENT_ID_LIFECYCLE
Domain lifecycle events
Sys::Virt::Domain::EVENT_ID_REBOOT
Soft / warm reboot events
Sys::Virt::Domain::EVENT_ID_RTC_CHANGE
RTC clock adjustments
Sys::Virt::Domain::EVENT_ID_IO_ERROR
File IO errors, typically from disks
Sys::Virt::Domain::EVENT_ID_WATCHDOG
Watchdog device triggering
Sys::Virt::Domain::EVENT_ID_GRAPHICS
Graphics client connections.
Sys::Virt::Domain::EVENT_ID_IO_ERROR_REASON
File IO errors, typically from disks, with a root cause
Sys::Virt::Domain::EVENT_ID_CONTROL_ERROR
Errors from the virtualization control channel
Sys::Virt::Domain::EVENT_ID_BLOCK_JOB
Completion status of asynchronous block jobs
Sys::Virt::Domain::EVENT_ID_DISK_CHANGE
Changes in disk media
Sys::Virt::Domain::EVENT_ID_TRAY_CHANGE
CDROM media tray state
Sys::Virt::Domain::EVENT_ID_PMSUSPEND
Power management initiated suspend to RAM
Sys::Virt::Domain::EVENT_ID_PMSUSPEND_DISK
Power management initiated suspend to Disk
Sys::Virt::Domain::EVENT_ID_PMWAKEUP
Power management initiated wakeup
Sys::Virt::Domain::EVENT_ID_BALLOON_CHANGE
Balloon target changes
Sys::Virt::Domain::EVENT_ID_DEVICE_REMOVED
Asynchronous guest device removal
IO ERROR EVENT CONSTANTS
These constants describe what action was taken due to the IO error.
Sys::Virt::Domain::EVENT_IO_ERROR_NONE
No action was taken, the error was ignored & reported as success to guest
Sys::Virt::Domain::EVENT_IO_ERROR_PAUSE
The guest is paused since the error occurred
Sys::Virt::Domain::EVENT_IO_ERROR_REPORT
The error has been reported to the guest OS
WATCHDOG EVENT CONSTANTS
These constants describe what action was taken due to the watchdog firing
Sys::Virt::Domain::EVENT_WATCHDOG_NONE
No action was taken, the watchdog was ignored
Sys::Virt::Domain::EVENT_WATCHDOG_PAUSE
The guest is paused since the watchdog fired
Sys::Virt::Domain::EVENT_WATCHDOG_POWEROFF
The guest is powered off after the watchdog fired
Sys::Virt::Domain::EVENT_WATCHDOG_RESET
The guest is reset after the watchdog fired
Sys::Virt::Domain::EVENT_WATCHDOG_SHUTDOWN
The guest attempted to gracefully shutdown after the watchdog fired
Sys::Virt::Domain::EVENT_WATCHDOG_DEBUG
No action was taken, the watchdog was logged
GRAPHICS EVENT PHASE CONSTANTS
These constants describe the phase of the graphics connection
Sys::Virt::Domain::EVENT_GRAPHICS_CONNECT
The initial client connection
Sys::Virt::Domain::EVENT_GRAPHICS_INITIALIZE
The client has been authenticated & the connection is running
Sys::Virt::Domain::EVENT_GRAPHICS_DISCONNECT
The client has disconnected
GRAPHICS EVENT ADDRESS CONSTANTS
These constants describe the format of the address
Sys::Virt::Domain::EVENT_GRAPHICS_ADDRESS_IPV4
An IPv4 address
Sys::Virt::Domain::EVENT_GRAPHICS_ADDRESS_IPV6
An IPv6 address
Sys::Virt::Domain::EVENT_GRAPHICS_ADDRESS_UNIX
An UNIX socket path address
DISK CHANGE EVENT CONSTANTS
These constants describe the reason for a disk change event
Sys::Virt::Domain::EVENT_DISK_CHANGE_MISSING_ON_START
The disk media was missing when attempting to start the guest
TRAY CHANGE CONSTANTS
These constants describe the reason for a tray change event
Sys::Virt::Domain::EVENT_TRAY_CHANGE_CLOSE
The tray was closed
Sys::Virt::Domain::EVENT_TRAY_CHANGE_OPEN
The tray was opened
DOMAIN BLOCK JOB TYPE CONSTANTS
The following constants identify the different types of domain block jobs
Sys::Virt::Domain::BLOCK_JOB_TYPE_UNKNOWN
An unknown block job type
Sys::Virt::Domain::BLOCK_JOB_TYPE_PULL
The block pull job type
Sys::Virt::Domain::BLOCK_JOB_TYPE_COPY
The block copy job type
Sys::Virt::Domain::BLOCK_JOB_TYPE_COMMIT
The block commit job type
DOMAIN BLOCK JOB COMPLETION CONSTANTS
The following constants can be used to determine the completion status of a block job
Sys::Virt::Domain::BLOCK_JOB_COMPLETED
A successfully completed block job
Sys::Virt::Domain::BLOCK_JOB_FAILED
An unsuccessful block job
Sys::Virt::Domain::BLOCK_JOB_CANCELED
A block job canceled byy the user
Sys::Virt::Domain::BLOCK_JOB_READY
A block job is running
DOMAIN BLOCK REBASE CONSTANTS
The following constants are useful when rebasing block devices
Sys::Virt::Domain::BLOCK_REBASE_SHALLOW
Limit copy to top of source backing chain
Sys::Virt::Domain::BLOCK_REBASE_REUSE_EXT
Reuse existing external file for copy
Sys::Virt::Domain::BLOCK_REBASE_COPY_RAW
Make destination file raw
Sys::Virt::Domain::BLOCK_REBASE_COPY
Start a copy job
DOMAIN BLOCK JOB ABORT CONSTANTS
The following constants are useful when aborting job copy jobs
Sys::Virt::Domain::BLOCK_JOB_ABORT_ASYNC
Request only, do not wait for completion
Sys::Virt::Domain::BLOCK_JOB_ABORT_PIVOT
Pivot to mirror when ending a copy job
DOMAIN BLOCK COMMIT JOB CONSTANTS
The following constants are useful with block commit job types
Sys::Virt::Domain::BLOCK_COMMIT_DELETE
Delete any files that are invalid after commit
Sys::Virt::Domain::BLOCK_COMMIT_SHALLOW
NULL base means next backing file, not whole chain
DOMAIN SAVE / RESTORE CONSTANTS
The following constants can be used when saving or restoring virtual machines
Sys::Virt::Domain::SAVE_BYPASS_CACHE
Do not use OS I/O cache when saving state.
Sys::Virt::Domain::SAVE_PAUSED
Mark the saved state as paused to prevent the guest CPUs starting upon restore.
Sys::Virt::Domain::SAVE_RUNNING
Mark the saved state as running to allow the guest CPUs to start upon restore.
DOMAIN CORE DUMP CONSTANTS
The following constants can be used when triggering domain core dumps
Sys::Virt::Domain::DUMP_LIVE
Do not pause execution while dumping the guest
Sys::Virt::Domain::DUMP_CRASH
Crash the guest after completing the core dump
Sys::Virt::Domain::DUMP_BYPASS_CACHE
Do not use OS I/O cache when writing core dump
Sys::Virt::Domain::DUMP_RESET
Reset the virtual machine after finishing the dump
Sys::Virt::Domain::DUMP_MEMORY_ONLY
Only include guest RAM in the dump, not the device state
DESTROY CONSTANTS
The following constants are useful when terminating guests using the "destroy" API.
Sys::Virt::Domain::DESTROY_DEFAULT
Destroy the guest using the default approach
Sys::Virt::Domain::DESTROY_GRACEFUL
Destroy the guest in a graceful manner
SHUTDOWN CONSTANTS
The following constants are useful when requesting that a guest terminate using the "shutdown" API
Sys::Virt::Domain::SHUTDOWN_DEFAULT
Shutdown using the hypervisor's default mechanism
Sys::Virt::Domain::SHUTDOWN_GUEST_AGENT
Shutdown by issuing a command to a guest agent
Sys::Virt::Domain::SHUTDOWN_ACPI_POWER_BTN
Shutdown by injecting an ACPI power button press
Sys::Virt::Domain::SHUTDOWN_INITCTL
Shutdown by talking to initctl (containers only)
Sys::Virt::Domain::SHUTDOWN_SIGNAL
Shutdown by sending SIGTERM to the init process
REBOOT CONSTANTS
The following constants are useful when requesting that a guest terminate using the "reboot" API
Sys::Virt::Domain::REBOOT_DEFAULT
Reboot using the hypervisor's default mechanism
Sys::Virt::Domain::REBOOT_GUEST_AGENT
Reboot by issuing a command to a guest agent
Sys::Virt::Domain::REBOOT_ACPI_POWER_BTN
Reboot by injecting an ACPI power button press
Sys::Virt::Domain::REBOOT_INITCTL
Reboot by talking to initctl (containers only)
Sys::Virt::Domain::REBOOT_SIGNAL
Reboot by sending SIGHUP to the init process
METADATA CONSTANTS
The following constants are useful when reading/writing metadata about a guest
Sys::Virt::Domain::METADATA_TITLE
The short human friendly title of the guest
Sys::Virt::Domain::METADATA_DESCRIPTION
The long free text description of the guest
Sys::Virt::Domain::METADATA_ELEMENT
The structured metadata elements for the guest
DISK ERROR CONSTANTS
The following constants are useful when interpreting disk error codes
Sys::Virt::Domain::DISK_ERROR_NONE
No error
Sys::Virt::Domain::DISK_ERROR_NO_SPACE
The host storage has run out of free space
Sys::Virt::Domain::DISK_ERROR_UNSPEC
An unspecified error has ocurred.
MEMORY STATISTIC CONSTANTS
Sys::Virt::Domain::MEMORY_STAT_SWAP_IN
Swap in
Sys::Virt::Domain::MEMORY_STAT_SWAP_OUT
Swap out
Sys::Virt::Domain::MEMORY_STAT_MINOR_FAULT
Minor faults
Sys::Virt::Domain::MEMORY_STAT_MAJOR_FAULT
Major faults
Sys::Virt::Domain::MEMORY_STAT_RSS
Resident memory
Sys::Virt::Domain::MEMORY_STAT_UNUSED
Unused memory
Sys::Virt::Domain::MEMORY_STAT_AVAILABLE
Available memory
Sys::Virt::Domain::MEMORY_STAT_ACTUAL_BALLOON
Actual balloon limit
DOMAIN LIST CONSTANTS
The following constants can be used when listing domains
Sys::Virt::Domain::LIST_ACTIVE
Only list domains that are currently active (running, or paused)
Sys::Virt::Domain::LIST_AUTOSTART
Only list domains that are set to automatically start on boot
Sys::Virt::Domain::LIST_HAS_SNAPSHOT
Only list domains that have a stored snapshot
Sys::Virt::Domain::LIST_INACTIVE
Only list domains that are currently inactive (shutoff, saved)
Sys::Virt::Domain::LIST_MANAGEDSAVE
Only list domains that have current managed save state
Sys::Virt::Domain::LIST_NO_AUTOSTART
Only list domains that are not set to automatically start on boto
Sys::Virt::Domain::LIST_NO_MANAGEDSAVE
Only list domains that do not have any managed save state
Sys::Virt::Domain::LIST_NO_SNAPSHOT
Only list domains that do not have a stored snapshot
Sys::Virt::Domain::LIST_OTHER
Only list domains that are not running, paused or shutoff
Sys::Virt::Domain::LIST_PAUSED
Only list domains that are paused
Sys::Virt::Domain::LIST_PERSISTENT
Only list domains which have a persistent config
Sys::Virt::Domain::LIST_RUNNING
Only list domains that are currently running
Sys::Virt::Domain::LIST_SHUTOFF
Only list domains that are currently shutoff
Sys::Virt::Domain::LIST_TRANSIENT
Only list domains that do not have a persistent config
SEND KEY CONSTANTS
The following constants are to be used with the "send_key" API
Sys::Virt::Domain::SEND_KEY_MAX_KEYS
The maximum number of keys that can be sent in a single call to "send_key"
BLOCK STATS CONSTANTS
The following constants provide the names of well known block stats fields
Sys::Virt::Domain::BLOCK_STATS_ERRS
The number of I/O errors
Sys::Virt::Domain::BLOCK_STATS_FLUSH_REQ
The number of flush requests
Sys::Virt::Domain::BLOCK_STATS_FLUSH_TOTAL_TIMES
The time spent processing flush requests
Sys::Virt::Domain::BLOCK_STATS_READ_BYTES
The amount of data read
Sys::Virt::Domain::BLOCK_STATS_READ_REQ
The number of read requests
Sys::Virt::Domain::BLOCK_STATS_READ_TOTAL_TIMES
The time spent processing read requests
Sys::Virt::Domain::BLOCK_STATS_WRITE_BYTES
The amount of data written
Sys::Virt::Domain::BLOCK_STATS_WRITE_REQ
The number of write requests
Sys::Virt::Domain::BLOCK_STATS_WRITE_TOTAL_TIMES
The time spent processing write requests
CPU STATS CONSTANTS
The following constants provide the names of well known cpu stats fields
Sys::Virt::Domain::CPU_STATS_CPUTIME
The total CPU time, including both hypervisor and vCPU time.
Sys::Virt::Domain::CPU_STATS_USERTIME
THe total time in kernel
Sys::Virt::Domain::CPU_STATS_SYSTEMTIME
The total time in userspace
Sys::Virt::Domain::CPU_STATS_VCPUTIME
The total vCPU time.
CPU STATS CONSTANTS
The following constants provide the names of well known schedular parameters
Sys::Virt::SCHEDULER_EMULATOR_PERIOD
The duration of the time period for scheduling the emulator
Sys::Virt::SCHEDULER_EMULATOR_QUOTA
The quota for the emulator in one schedular time period
PROCESS SIGNALS
The following constants provide the names of signals which can be sent to guest processes. They mostly correspond to POSIX signal names.
Sys::Virt::Domain::PROCESS_SIGNAL_NOP
SIGNOP
Sys::Virt::Domain::PROCESS_SIGNAL_HUP
SIGHUP
Sys::Virt::Domain::PROCESS_SIGNAL_INT
SIGINT
Sys::Virt::Domain::PROCESS_SIGNAL_QUIT
SIGQUIT
Sys::Virt::Domain::PROCESS_SIGNAL_ILL
SIGILL
Sys::Virt::Domain::PROCESS_SIGNAL_TRAP
SIGTRAP
Sys::Virt::Domain::PROCESS_SIGNAL_ABRT
SIGABRT
Sys::Virt::Domain::PROCESS_SIGNAL_BUS
SIGBUS
Sys::Virt::Domain::PROCESS_SIGNAL_FPE
SIGFPE
Sys::Virt::Domain::PROCESS_SIGNAL_KILL
SIGKILL
Sys::Virt::Domain::PROCESS_SIGNAL_USR1
SIGUSR1
Sys::Virt::Domain::PROCESS_SIGNAL_SEGV
SIGSEGV
Sys::Virt::Domain::PROCESS_SIGNAL_USR2
SIGUSR2
Sys::Virt::Domain::PROCESS_SIGNAL_PIPE
SIGPIPE
Sys::Virt::Domain::PROCESS_SIGNAL_ALRM
SIGALRM
Sys::Virt::Domain::PROCESS_SIGNAL_TERM
SIGTERM
Sys::Virt::Domain::PROCESS_SIGNAL_STKFLT
SIGSTKFLT
Sys::Virt::Domain::PROCESS_SIGNAL_CHLD
SIGCHLD
Sys::Virt::Domain::PROCESS_SIGNAL_CONT
SIGCONT
Sys::Virt::Domain::PROCESS_SIGNAL_STOP
SIGSTOP
Sys::Virt::Domain::PROCESS_SIGNAL_TSTP
SIGTSTP
Sys::Virt::Domain::PROCESS_SIGNAL_TTIN
SIGTTIN
Sys::Virt::Domain::PROCESS_SIGNAL_TTOU
SIGTTOU
Sys::Virt::Domain::PROCESS_SIGNAL_URG
SIGURG
Sys::Virt::Domain::PROCESS_SIGNAL_XCPU
SIGXCPU
Sys::Virt::Domain::PROCESS_SIGNAL_XFSZ
SIGXFSZ
Sys::Virt::Domain::PROCESS_SIGNAL_VTALRM
SIGVTALRM
Sys::Virt::Domain::PROCESS_SIGNAL_PROF
SIGPROF
Sys::Virt::Domain::PROCESS_SIGNAL_WINCH
SIGWINCH
Sys::Virt::Domain::PROCESS_SIGNAL_POLL
SIGPOLL
Sys::Virt::Domain::PROCESS_SIGNAL_PWR
SIGPWR
Sys::Virt::Domain::PROCESS_SIGNAL_SYS
SIGSYS
Sys::Virt::Domain::PROCESS_SIGNAL_RT0
SIGRT0
Sys::Virt::Domain::PROCESS_SIGNAL_RT1
SIGRT1
Sys::Virt::Domain::PROCESS_SIGNAL_RT2
SIGRT2
Sys::Virt::Domain::PROCESS_SIGNAL_RT3
SIGRT3
Sys::Virt::Domain::PROCESS_SIGNAL_RT4
SIGRT4
Sys::Virt::Domain::PROCESS_SIGNAL_RT5
SIGRT5
Sys::Virt::Domain::PROCESS_SIGNAL_RT6
SIGRT6
Sys::Virt::Domain::PROCESS_SIGNAL_RT7
SIGRT7
Sys::Virt::Domain::PROCESS_SIGNAL_RT8
SIGRT8
Sys::Virt::Domain::PROCESS_SIGNAL_RT9
SIGRT9
Sys::Virt::Domain::PROCESS_SIGNAL_RT10
SIGRT10
Sys::Virt::Domain::PROCESS_SIGNAL_RT11
SIGRT11
Sys::Virt::Domain::PROCESS_SIGNAL_RT12
SIGRT12
Sys::Virt::Domain::PROCESS_SIGNAL_RT13
SIGRT13
Sys::Virt::Domain::PROCESS_SIGNAL_RT14
SIGRT14
Sys::Virt::Domain::PROCESS_SIGNAL_RT15
SIGRT15
Sys::Virt::Domain::PROCESS_SIGNAL_RT16
SIGRT16
Sys::Virt::Domain::PROCESS_SIGNAL_RT17
SIGRT17
Sys::Virt::Domain::PROCESS_SIGNAL_RT18
SIGRT18
Sys::Virt::Domain::PROCESS_SIGNAL_RT19
SIGRT19
Sys::Virt::Domain::PROCESS_SIGNAL_RT20
SIGRT20
Sys::Virt::Domain::PROCESS_SIGNAL_RT21
SIGRT21
Sys::Virt::Domain::PROCESS_SIGNAL_RT22
SIGRT22
Sys::Virt::Domain::PROCESS_SIGNAL_RT23
SIGRT23
Sys::Virt::Domain::PROCESS_SIGNAL_RT24
SIGRT24
Sys::Virt::Domain::PROCESS_SIGNAL_RT25
SIGRT25
Sys::Virt::Domain::PROCESS_SIGNAL_RT26
SIGRT26
Sys::Virt::Domain::PROCESS_SIGNAL_RT27
SIGRT27
Sys::Virt::Domain::PROCESS_SIGNAL_RT28
SIGRT28
Sys::Virt::Domain::PROCESS_SIGNAL_RT29
SIGRT29
Sys::Virt::Domain::PROCESS_SIGNAL_RT30
SIGRT30
Sys::Virt::Domain::PROCESS_SIGNAL_RT31
SIGRT31
Sys::Virt::Domain::PROCESS_SIGNAL_RT32
SIGRT32
AUTHORS
Daniel P. Berrange <berrange@redhat.com>
COPYRIGHT
Copyright (C) 2006 Red Hat Copyright (C) 2006-2007 Daniel P. Berrange
LICENSE
This program is free software; you can redistribute it and/or modify it under the terms of either the GNU General Public License as
published by the Free Software Foundation (either version 2 of the License, or at your option any later version), or, the Artistic License,
as specified in the Perl README file.
SEE ALSO
Sys::Virt, Sys::Virt::Error, "http://libvirt.org"
perl v5.16.3 2014-06-10 Sys::Virt::Domain(3)