Designing Disaster Recovery Clusters using Metroclusters and Continentalclusters, Reprinted October 2011 (5900-1881)

Table 41 Command Exit Value and its Description (continued)
DescriptionValue
This indicates that in the event of an actual recovery process, the data replication storage
failover will not succeed on that node. Failover may be successful if attempted at a later time
or attempted on a different node in the cluster.
Command Reference
This sections lists the Metrocluster commands that can be used for the preview utility.
cmdrprev {-p <package> |-e <Metrocluster environment file>}
The command previews the failover of data replication device group that indicates if the device
group failover will be successful or not in event of an actual package failover. The command parses
the Metrocluster Environment file associated to the <package name> or which is provided as the
input parameter <Metrocluster env file> with the -e option. It ensures proper syntax, and
verifies for valid parameter values. The command then previews the failover of the device group
configured in the Metrocluster environment file. The storage preparation is based on the variables
defined in the Metrocluster environment file.
When run on the site where the primary storage is connected, the command previews the storage
preparation for local package failover. However, when run on the site where secondary storage
is connected, the command previews storage failover for remote package failover.
The command does not change the data replication environment and can be used even if the
package associated with the data replication storage is up on the cluster. If the FORCEFLAG is
present in the package directory, this command will remove it.
-p package It is name of the package for which the failover of data
replication device group is previewed. The command uses
the Metrocluster environment file present in the package
directory for the preview. The name of Metrocluster
environment file present in the package directory has to be
based on the naming convention. It is necessary for the
package to be configured in the cluster in order to use this
option.
-e Metrocluster Environment
File
It is the name of the Metrocluster environment file which is
used by command to preview the failover of data replication
storage. Use this option when the Metrocluster environment
file is outside the package directory.
Sample Output of the cmdrprev Command
The following procedure shows you how to use the cmdrprev command to preview the data
replication preparation for a package in an MC/SRDF environment.
1. Verify that the Metrocluster environment file for the package pkga is present in the package
directory on node dtsia14.
2. Verify that the environment variables are all set to the default values as shown below.
AUTOSWAPR2=0
AUTOR1RWNL=0
AUTOR1UIP=1
AUTOR1RWSUSP=0
AUTOR2RWNL=1
AUTOR2WDNL=1
AUTOR2XXNL=0
AUTOSPLITR1=0
CONSISTENCYGROUPS=0
DEVICE_GROUP="pkga_dg"
PKGDIR="/etc/cmcluster/pkga"
RETRY=60
RETRYTIME=5
504 Metrocluster Command Reference for Preview Utility