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Operating Systems
Solaris
Oracle VM for SPARC - control/io domain dilemna
Post 302994725 by Peasant on Monday 27th of March 2017 12:06:41 PM
03-27-2017
Moderator
Depends on the server, even rebooting of 'half' a server is possible.
If server has 2 or more sockets (T5-2, T7-2 .. ) you can have two (or more) service domains.
Lets say there are 2 sockets, with 2 controllers, 2 network cards 2 hba etc.
Those two service domains (primary and secondary) will hold 'PCI endpoints' to each of those mentioned above (1 per domain).
Guest domains (LDOMs) will be on on primary or secondary domain.
You can then actually achieve zero downtime when patching hypervisor.
Live migrating ldoms from primary to secondary, doing patching, reboot just primary etc.
But i would not advise it, if you don't actually require it real bad.
It increases complexity and maintenance.
If you have multiple sparc boxes you can always live migrate to another box.
Just be sure you are in 'the matrix' regarding OS versions and FW levels.
Also, read the fine print for OVM server, especially known issues
Take a look at this article :
Availability Best Practices - Availability Using Multiple Service Domains (Virtually All The Time)
If you plan such configuration, plan carefully and read the exact docs for the version of Solaris you are using.
Hope that helps
Regards
Peasant.
If server has 2 or more sockets (T5-2, T7-2 .. ) you can have two (or more) service domains.
Lets say there are 2 sockets, with 2 controllers, 2 network cards 2 hba etc.
Those two service domains (primary and secondary) will hold 'PCI endpoints' to each of those mentioned above (1 per domain).
Guest domains (LDOMs) will be on on primary or secondary domain.
You can then actually achieve zero downtime when patching hypervisor.
Live migrating ldoms from primary to secondary, doing patching, reboot just primary etc.
But i would not advise it, if you don't actually require it real bad.
It increases complexity and maintenance.
If you have multiple sparc boxes you can always live migrate to another box.
Just be sure you are in 'the matrix' regarding OS versions and FW levels.
Also, read the fine print for OVM server, especially known issues
Take a look at this article :
Availability Best Practices - Availability Using Multiple Service Domains (Virtually All The Time)
If you plan such configuration, plan carefully and read the exact docs for the version of Solaris you are using.
Hope that helps
Regards
Peasant.
This User Gave Thanks to Peasant For This Post:
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asadmin-start-domain
asadmin-start-domain(1AS) User Commands asadmin-start-domain(1AS) NAME
asadmin-start-domain, start-domain - starts the given domain SYNOPSIS
start-domain [--domaindir install_dir/domains] [--terse=false] [--echo=false] [--verbose=false] [--debug] [domain_name] start-domain starts the specified domain. If there is only one domain in the default domain directory (install_dir/domains), then no oper- and is required to start the domain. However, if there is more than one domain, the domain operand must be specified. This command can only be run locally. OPTIONS
--domaindir directory where the domain is to be started. If specified, path must be accessible in the filesystem. If not speci- fied, the domain is started in the default install_dir/domains directory. --terse indicates that any output data must be very concise, typically avoiding human-friendly sentences and favoring well- formatted data for consumption by a script. Default is false. --echo setting to true will echo the command line statement on the standard output. Default is false. --verbose by default this flag is set to false. If set to true, detailed server startup output is displayed. Press CTRL-C to kill the server. Press CTRL- to print a thread dump. --debug by default this flag is set to false. If set to true, the server is started in debug mode and prints the JPDA port on the console. OPERANDS
domain_name name of the domain. Must be a unique name. Example 1: Using start-domain asadmin> start-domain sampleDomain Starting Domain sampleDomain, please wait. Domain sampleDomain started Where: the sampleDomain domain is started. EXIT STATUS
0 command executed successfully 1 error in executing the command asadmin-create-domain(1AS), asadmin-delete-domain(1AS), asadmin-stop-domain(1AS), asadmin-list-domains(1AS) J2EE 1.4 SDK March 2004 asadmin-start-domain(1AS)