PRIMECLUSTERGlobal Disk Services Configuration and AdministrationGuide 4.5

D.12 sdxparam - Configuration parameter operations

SYNOPSIS

sdxparam -G [-p param,...]

sdxparam -S [-p param=val [,param=val,...]] [-e default]

DESCRIPTION

Use sdxparam to perform operations on GDS configuration parameter.
You must be superuser to use this command.

PRIMARY OPTIONS

You can use either of the following options.

-G

Get
Displays the current value of configuration parameter or parameters specified by param. When using cluster system, parameter value of the current node will be displayed.

If the -p option is omitted, all configuration parameters are displayed.

-S

Set
Sets the value specified by val to the configuration parameter or parameters specified by param. When using cluster system, this option sets the parameter value of the current node. Execute on all the nodes for cluster system.

The new value becomes valid upon returning from the command, and rebooting the system will not change the value.

SUB OPTIONS

Sub options are as follows:

-e default (when using -S)

Resets all configuration parameter values to default.

When indicated at the same time as -p option, this option is ignored.

-p param,...(when using -G)

Displays the configuration parameter param value.

-p param=val[,param=val,...] (when using -S)

Sets val to configuration parameter param.

You can indicate the following combination to param and val.

copy_concurrency=num

Sets the maximum number of synchronization copying you can execute simultaneously to num.

The value is set to 8 by default.

Values from 1 to 1024 may be specified for num.

copy_delay=msec

This option delays the synchronization copying by milliseconds specified by msec rounded up to multiples of 10, when the copying is initiated by an event other than hot spare.

The value is set to 0 by default.

Values from 0 to 1000 may be specified for msec.

spare_copy_delay=msec

This option delays the synchronization copying by milliseconds specified by msec rounded up to the multiple of 10, when the copying is initiated by hot spare.

The value is set to 10 by default.

Values from 0 to 1000 may be specified for msec.
When 0 msec is set, the I/O performance of the volume during synchronization copying by hot spare reduces to more than 50 % compared to when synchronization copying is not initiated.

RETURNED VALUE

Upon successful completion, a value of 0 is returned.
Otherwise, a non-zero value is returned.

CAUTION

The default values and the range of values you can use for configuration parameters may change in the future.