Building Disaster Recovery Serviceguard Solutions Using Metrocluster with Continuous Access EVA P6000 for Linux B.12.00.00

3. After you customize the sssu_input file, run the SSSU command as follows to set the
destination Vdisk to read-only mode.
# /sbin/sssu “FILE <sssu_input_file>”
4. To create the special device file name for the Vdisk on P6000/EVA, after changing the access
mode of the destination Vdisk, run the /usr/bin/rescan-scsi-bus.sh command to
detect and activate the disks, and then run lsscsi command to display the configured disks.
NOTE: The lsscsi command is available in lssci package available in the respective
OS repository.
Creating the Metrocluster with Continuous Access EVA P6000 for Linux Map for the
replicated storage
The mapping file caeva.map is required to be present in all the cluster nodes for the Metrocluster
with Continuous Access EVA P6000 for Linux product to function. The mapping file caeva.map
contains information of the Management Servers as well as the information of the HP P6000/EVA
Storages and DR Groups used in the Metrocluster environment.
The Metrocluster with Continuous Access EVA P6000 for Linux product provides two utility tools,
smispasswd and evadiscovery, for users to provide information about the SMI-S servers running
on the Management Servers and DR groups that will be used in Metrocluster environment. These
tools must be used to create or modify the map file caeva.map.
This product provides two utility tools for users to provide information about the SMI-S service
running on the Management Servers and DR groups that will be used in Metrocluster environment.
smispasswd
Metrocluster retrieves storage information from the SMIS-Server for its startup or failover operations.
To contact the SMIS-server, it requires SMIS Server's hostname/IP address, username/password,
and port number. This information must be available in caeva.map file before you configure any
Metrocluster packages. The smispasswd utility, packaged along with Metrocluster must be used
to create or edit this map file with the above SMI-S server login information.
evadiscovery
When querying HP P6000/EVA storage states through the SMI-S, Metrocluster first needs to find
the internal device IDs. This process takes time. However, this process need not be repeated because
the IDs are static in the P6000/EVA system. This information is cached in the caeva.map file to
improve package startup time. To cache the internal device IDs, run the evadiscovery tool after the
P6000/EVA and HP P6000 Continuous Access are configured, and the storage is accessible from
the hosts. The tool queries the active Management Server for the needed information, and then
saves it in caeva.map. Once the map file is created, it is necessary to distribute it to all the cluster
nodes to communicate with the HP P6000/EVA units.
NOTE: It is important to set the active Management Server before executing the evadiscovery
tool. For details to set the active Management Server see Section : Setting a default Management
Server.
Defining Management Server and SMI-S information
To define Management Server and SMI-S information use the smispasswd tool. The following
steps describe the options for defining Management Server and SMI-S information:
Creating the Management Server list
On a host that resides on the same data center as the active management server, create the
Management Server list using an input file. To create use the following steps:
14 Configuring an application in a Metrocluster environment