HP Serviceguard Metrocluster with EMC SRDF for Linux B.01.00.00

3. All devices from the RDF (RA) group configuration are added to the device group for
SRDF/Asynchronous operation. For example, if the RDF group displayed in the symrdf list
is group number 2, then all devices in this RDF group must be managed together within one
device group for SRDF/Asynchronous operation.
# symld -g <Device Group Name> addall -rdfg 2
4. Repeat steps 1 through 3 on every host that runs Serviceguard packages.
5. Query the device group to display the R1-to-R2 setup and the state of the SRDF/Asynchronous
device pairs.
# symrdf -g <Device Group Name> query -rdfa
Here is a sample output from this command:
Source (R1) View Target (R2) View MODES
-------------------------------- ------------------------ ----- ------------
ST LI ST
Standard A N A
Logical T R1 Inv R2 Inv K T R1 Inv R2 Inv RDF Pair
Device Dev E Tracks Tracks S Dev E Tracks Tracks MDACE STATE
-------------------------------- -- ------------------------ ----- ------------
DEV001 80A4 RW 0 0 RW 0340 WD 0 0 A.... Consistent
DEV002 80A5 RW 0 0 RW 0341 WD 0 0 A.... Consistent
DEV003 80A6 RW 0 0 RW 0342 WD 0 0 A.... Consistent
DEV004 80A7 RW 0 0 RW 0343 WD 0 0 A.... Consistent
DEV005 80A8 RW 0 0 RW 0344 WD 0 0 A.... Consistent
6. Set the device group to Asynchronous mode:
# symrdf -g <Device Group Name> set mode async
7. You must enable consistency protection to ensure data consistency on R2 side for the
SRDF/Asynchronous devices in the device group.
# symrdf -g <Device Group Name> enable
8. If the SRDF pairs are not in a Consistent state at this point, synchronize the data on the R2
side from the R1 side using the following command. The device state will be SyncInProg
until the Consistent status is reached.
# symrdf -g <Device Group Name> establish
Here is a sample output after the RDF pairs are established:
Source (R1) View Target (R2) View MODES
-------------------------------- ------------------------ ----- ------------
ST LI ST
Standard A N A
Logical T R1 Inv R2 Inv K T R1 Inv R2 Inv RDF Pair
Device Dev E Tracks Tracks S Dev E Tracks Tracks MDAE STATE
-------------------------------- -- ------------------------ ----- ------------
DEV001 80A4 RW 0 0 RW 0340 WD 0 0 A... Consistent
DEV002 80A5 RW 0 0 RW 0341 WD 0 0 A... Consistent
DEV003 80A6 RW 0 0 RW 0342 WD 0 0 A... Consistent
DEV004 80A7 RW 0 0 RW 0343 WD 0 0 A... Consistent
DEV005 80A8 RW 0 0 RW 0344 WD 0 0 A... Consistent
Verifying the EMC Symmetrix configuration
After you complete the procedures, use the symrdf list command to get a listing of all devices
and their states.
Back up the EMC Solutions Enabler database on each node, so that you do not repeat the
configuration steps if a failure corrupts the database. The EMC Solutions Enabler database is a
binary file located in the directory /var/symapi/db.
14 Configuring an application in a Metrocluster solution