8.6.1 swstestupdate (Update volume measurement command)

NAME

swstestupdate - measures the physical capacity of a Snap Data Volume

SYNOPSIS

When starting update volume measurements (setting up a pseudo session)

/opt/FJSVswsts/bin/swstestupdate start Volume-Name

When looking up the update volume (displaying the status of the pseudo session)

/opt/FJSVswsts/bin/swstestupdate status Volume-Name

When finishing update volume measurements (cancelling the pseudo session)

/opt/FJSVswsts/bin/swstestupdate stop Volume-Name

DESCRIPTION

This command measures the physical capacity of a Snap Data Volume using the pseudo session setting function.

When starting update volume measurements (setting up a pseudo session): Specify "start" as the subcommand to start measure of the physical capacity of a Snap Data Volume.

When looking up the update volume (displaying the status of the pseudo session)

Specify "status" as the subcommand to display the physical capacity of a Snap Data Volume.
The following information will be displayed:

Title	Description
Volume-Name	The volume name.
Update	The amount of data that has been updated since measurements started in the number of blocks (1 block = 512 bytes). Displays "----" if there is no pseudo session. Displays "failed" if the pseudo session is error-suspended.

Title

Description

Volume-Name

The volume name.

Update

The amount of data that has been updated since measurements started in the number of blocks (1 block = 512 bytes).

Displays "----" if there is no pseudo session.
Displays "failed" if the pseudo session is error-suspended.

When finishing update volume measurements (cancelling the pseudo session): Specify "stop" as the subcommand to stop measure of the physical capacity of a Snap Data Volume

OPERANDS

Volume-Name

Specifies the volume name.
Specify a copy source volume that is used with SnapOPC/SnapOPC+ operations
GDS logical volumes cannot be specified.

EXIT STATUS

=0: Completed successfully
>0: Terminated abnormally

EXAMPLES

Measure the update volume:

(Start taking measurements by starting a pseudo session)
#/opt/FJSVswsts/bin/swstestupdate start /dev/dsk/c1t0d0s1
/dev/dsk/c1t0d0s1 swstestupdate completed

(First measurement)
#/opt/FJSVswsts/bin/swstestupdate status /dev/dsk/c1t0d0s1
Volume-Name       Update
/dev/dsk/c1t0d0s1 644333

(Second measurement)
#/opt/FJSVswsts/bin/swstestupdate status /dev/dsk/c1t0d0s1
Volume-Name       Update
/dev/dsk/c1t0d0s1 1045000

(Stop taking measurements by cancelling the pseudo session)
# /opt/FJSVswsts/bin/swstestupdate stop /dev/dsk/c1t0d0s1
/dev/dsk/c1t0d0s1 swstestupdate completed
#

NOTES

The amount of data updated cannot be measured in the following cases:
- When the specified volume does not exist.
- When the ETERNUS Disk storage system device does not support the SnapOPC/SnapOPC+ function.
- When the pseudo session has already been set up (i.e., when the "start" option is specified).
- When the pseudo session does not exist (i.e., when the "stop" option is specified).