7.10.3 Changing shared resources
This subsection explains how to change shared resources. Some shared resources can be changed dynamically while hosts and servers are running. For details about changing shared resources dynamically, see 7.10.4 Changing the shared resource configuration while hosts and servers are running.
The procedure for changing shared resources is described below. You must perform this procedure in the active and the standby systems.
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Terminate the servers.
You need terminate only servers that use shared resources. HA Monitor can continue running.
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Specify the shared resources.
Specify the shared resources to be used. For details, see 6.12 Configuring the shared resources to be used by servers.
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Change the definition file containing the environment settings.
Change the server environment definition or other definitions as appropriate for the type of shared resource.
The table below lists the settings to be changed for the various types of shared resources. For details about the server environment definition, see 8.4.1 Server environment definition (servers).
Table 7‒8: Types of shared resources and settings to be changed Resource type
Operands to be changed (server environment definition)
Environment settings to be changed (other than the server environment definition)
Section
Shared disk
-
disk
-
vg_on_opt
-
vg_neck
--
--
File system
-
fs_name
-
fs_mount_dir
-
fs_mount_opt
-
fs_umount_retry
-
fs_neck
--
--
LAN
-
lan_updown
-
ip_neck
-
server-alias-name.up
-
server-alias-name.down
Other resources
-
uoc_neck
-
uoc_pairdown
-
User command
All resources
-
dev_timelimit
-
dev_onlimit
-
dev_offlimit
-
deviceoff_order
--
--
- Legend:
-
--: Not applicable
-
-
Check the definitions.
Execute the definition check command (moncheck command).
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Start the servers.
For servers in the server mode, execute the start command provided by the program. For servers in the monitor mode, execute the monitor-mode server start command (monbegin command).
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Check the server status.
Execute the server and host status display command (monshow command).