- Logical Domains Manager daemon
The ldmd daemon is referred to as the Logical Domains Manager. It is the daemon program for the ldm command, which is used to create and manage logical domains. There can be only one Logical Domains Manager per server. The ldmd daemon runs on the control domain, which is the initial domain created by the service processor (SP). The control domain is named primary.
A logical domain is a discrete logical grouping with its own operating system, resources, and identity within a single system. Each logical domain can be created, destroyed, reconfigured, and rebooted independently, without requiring a power cycle of the server. You can use logical domains to run a variety of applications in different domains and keep them independent for security purposes.
You can use the svcadm command to modify the following properties:
Specifies the autorecovery policy. This property can have one of the following values:
autorecovery_policy=1 – Logs warning messages when an autosave configuration is newer than the corresponding running configuration. These messages are logged in the ldmd SMF log file. The user must manually perform any configuration recovery. This is the default policy.
autorecovery_policy=2 – Displays a notification message if an autosave configuration is newer than the corresponding running configuration. This notification message is printed in the output of any ldm command the first time an ldm command is issued after each restart of the Logical Domains Manager. The user must manually perform any configuration recovery.
autorecovery_policy=3 – Automatically updates the configuration if an autosave configuration is newer than the corresponding running configuration. This action overwrites the SP configuration that will be used during the next power cycle. This configuration is updated with the newer configuration that is saved on the control domain. This action does not impact the currently running configuration. It only impacts the configuration that will be used during the next power cycle. A message is also logged, which states that a newer configuration has been saved on the SP and that it will be booted the next time the system performs a power cycle. These messages are logged in the ldmd SMF log file.
Enables a guest domain migration from another system to this system if xmpp_enabled is also set to true. The default value is true.
Enables a guest domain migration from this system to another system if xmpp_enabled is also set to true. The default value is true.
Enables the ldmd XMPP server to listen for configuration requests from third-party management applications. Also, permits the ldmd daemon to communicate with the ldmd daemon on another system to coordinate a migration between the two systems. The default value is true.
See the attributes(5) man page for a description of the following attributes.
The ldmd service is managed by the Service Management Facility (SMF) and uses the svc:/ldoms/ldmd:default service identifier. See the smf(5) man page.
Use the svcadm command to perform administrative actions on this service, such as enabling, disabling, or requesting a restart. Use the svcs command to query the service's status.
For more information about the ldmd SMF properties, see the Oracle VM Server for SPARC 2.0 Administration Guide.