HP StorageWorks P9000 Replication Manager Software 7.1 CLI Reference Guide (TB584-96021, May 2011)

Description
The EX_DRM_RESYNC command executes the drmresync command and resynchronizes copy groups.
Executing this extended command before you back up a file system or the database to the secondary
volume increases the speed of backup processing.
When usual operation is in the pair status, the specified copy group is resynchronized based on the
backup ID created when data is backed up from the primary volume to the secondary volume. When
usual operation is in the split state, you need to specify the copy group to be resynchronized because
the copy group needs to be resynchronized before the backup. The copy group to be resynchronized
is selected from the execution result of the drmcgctl or drmfscat command.
If there is a copy group that has not been used for backup processing, the extended command
automatically specifies that copy group. If none of the copy groups has been used for backup
processing, the command specifies the first copy group in the pair definitions.
If all copy groups have been used for backup processing, the command specifies the oldest copy
group used for backup processing.
Prerequisites
The prerequisites for executing this extended command are as follows:
• The operation definition file corresponding to the specified operation ID has been created.
• The copy-group list file has already been created when copy groups are resynchronized by using
the copy-group list file.
• When usual operation is in the pair status, the file system or the database has been backed up
to the secondary volume by using the commands below, and the backup ID file has already been
created.
• When backing up a file system, use the EX_DRM_FS_BACKUP command.
• When backing up an SQL Server database, use the EX_DRM_SQL_BACKUP command.
• When backing up an Exchange database, use the EX_DRM_EXG_BACKUP command.
Arguments
Specify the arguments of this extended command in the following order: operation-ID, -cg
copy-group, -cg_file copy-group-list-file, -copy_size copy-track-size.
operation-ID
A character string that uniquely identifies the operation to be performed. Information in the operation
definition file linked to the specified operation ID is used when executing an extended command.
-cg copy-group
When usual operation is in the split state, specify the name of the copy group you want to
resynchronize. Specify the copy group to be used at the next backup.
-cg_file copy-group-list-file
When usual operation is in the split state, specify the absolute path of the copy-group list file that
contains the copy group you want to resynchronize. Use this item if you want to resynchronize many
copy groups at once. Specify the copy group to be used at the next backup.
-copy_size copy-track-size
For copy-track-size, specify a numeric value in the range from 1 to 15 as the copy track size
to be used for copy group resynchronization. If you do not specify this option, the extended command
uses the copy track size specified in the DRM_COPY_SIZE environment variable of Application Agent.
Extended commands34