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Full Discussion: LPAR,DLPAR and WPAR
Top Forums UNIX for Advanced & Expert Users LPAR,DLPAR and WPAR Post 302763237 by MichaelFelt on Tuesday 29th of January 2013 06:41:47 PM
Old 01-29-2013
Quote:
Originally Posted by cero
A DLPAR (Dynamic Logical Partition) is a LPAR that you can reconfigure dynamically without shutting down the OS running there.
What I read about WPAR (didn't work with those) says they are for OS level virtualisation giving you the opportunity to isolate your applications under AIX.
would be better to think of DLPAR as an operation to dynamically alter a virtual machine aka LPAR.

WPAR can be seen as the AIX implementation of the jail concept. Solaris has a similar construct known as containers. WPAR differentiate from others in that there are two types - system and application WPAR's.
An application WPAR isolates the application encapsulating the application in a protected environment that can be moved between AIX systems running at the same level.
A system WPAR appears as if it is a regular system. if you know where to look you can see the difference. System WPAR are also mobile capable.

Hope this helps.
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FENCE_AGENT(8)						      System Manager's Manual						    FENCE_AGENT(8)

NAME
fence_lpar - Fence agent for IBM LPAR DESCRIPTION
fence_lpar accepts options on the command line as well as from stdin. Fenced sends parameters through stdin when it execs the agent. fence_lpar can be run by itself with command line options. This is useful for testing and for turning outlets on or off from scripts. PARAMETERS
-o, --action=<action> Fencing Action (Default Value: reboot) -a, --ip=<ip> IP Address or Hostname This parameter is always required. -l, --username=<name> Login Name This parameter is always required. -p, --password=<password> Login password or passphrase -S, --password-script=<script> Script to retrieve password -x, --ssh SSH connection (Default Value: 1) -k, --identity-file=<filename> Identity file for ssh -n <id> Name of the partition Partition name -s <id> Name of the managed system Managed system name -H, --hmc-version=<version> Force HMC version to use (3 or 4) (Default Value: 4) -c, --command-prompt=<prompt> Force command prompt (Default Value: [':~>', ']$', '$ ']) -4, --inet4-only Forces agent to use IPv4 addresses only -6, --inet6-only Forces agent to use IPv6 addresses only -u, --ipport=<port> TCP port to use for connection with device -v, --verbose Verbose mode -D, --debug-file=<debugfile> Write debug information to given file -V, --version Display version information and exit -h, --help Display help and exit -C, --separator=<char> Separator for CSV created by operation list (Default Value: ,) --power-timeout Test X seconds for status change after ON/OFF (Default Value: 20) --shell-timeout Wait X seconds for cmd prompt after issuing command (Default Value: 3) --login-timeout Wait X seconds for cmd prompt after login (Default Value: 15) --power-wait Wait X seconds after issuing ON/OFF (Default Value: 0) --delay Wait X seconds before fencing is started (Default Value: 0) --retry-on Count of attempts to retry power on (Default Value: 1) ACTIONS
on Power on machine. off Power off machine. reboot Reboot machine. status This returns the status of the plug/virtual machine. list List available plugs with aliases/virtual machines if there is support for more then one device. Returns N/A otherwise. monitor Check if fencing device is running. List available plugs/virtual machines or get status of machine (if it does not support more). metadata The operational behavior of this is not known. STDIN PARAMETERS
action Fencing Action (Default Value: reboot) ipaddr IP Address or Hostname This parameter is always required. login Login Name This parameter is always required. passwd Login password or passphrase passwd_script Script to retrieve password secure SSH connection (Default Value: 1) identity_file Identity file for ssh partition Partition name managed Managed system name hmc_version Force HMC version to use (3 or 4) (Default Value: 4) cmd_prompt Force command prompt (Default Value: [':~>', ']$', '$ ']) inet4_only Forces agent to use IPv4 addresses only inet6_only Forces agent to use IPv6 addresses only ipport TCP port to use for connection with device verbose Verbose mode debug Write debug information to given file version Display version information and exit help Display help and exit separator Separator for CSV created by operation list (Default Value: ,) power_timeout Test X seconds for status change after ON/OFF (Default Value: 20) shell_timeout Wait X seconds for cmd prompt after issuing command (Default Value: 3) login_timeout Wait X seconds for cmd prompt after login (Default Value: 15) power_wait Wait X seconds after issuing ON/OFF (Default Value: 0) delay Wait X seconds before fencing is started (Default Value: 0) retry_on Count of attempts to retry power on (Default Value: 1) fence_lpar (Fence Agent) 2009-10-20 FENCE_AGENT(8)
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