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Sun Cluster Geographic Edition Data Replication Guide for Hitachi TrueCopy and Universal Replicator

ProcedureHow to Replicate the Configuration Information From the Primary Cluster When Using Raw-Disk Device Groups

Before You Begin

If you are using storage-based replication, do not configure a replicated volume as a quorum device. The Sun Cluster Geographic Edition software does not support Hitachi TrueCopy or Universal Replicator S-VOL and Command Device as a Sun Cluster quorum device. See Using Storage-Based Data Replication Within a Cluster in Sun Cluster System Administration Guide for Solaris OS for more information.

  1. Start replication for the devgroup1 device group.


    phys-paris-1# paircreate -g devgroup1 -vl -f async

phys-paris-1# pairdisplay -g devgroup1
Group PairVol(L/R) (Port#,TID,LU),Seq#,LDEV#,P/S,Status,Fence,Seq#,P-LDEV# M 
devgroup1 pair1(L) (CL1-A , 0, 1) 54321   1..P-VOL COPY ASYNC ,12345 609   -
devgroup1 pair1(R) (CL1-C , 0, 20)12345 609..S-VOL COPY ASYNC ,-----   1   -
devgroup1 pair2(L) (CL1-A , 0, 2) 54321   2..P-VOL COPY ASYNC ,12345 610   -
devgroup1 pair2(R) (CL1-C , 0, 21)12345 610..S-VOL COPY ASYNC ,-----   2   -

  2. Wait for the state of the pair to become PAIR on the secondary cluster.


    phys-newyork-1# pairdisplay -g devgroup1
Group PairVol(L/R) (Port#,TID,LU),Seq#,LDEV#,P/S,Status,Fence,Seq#,P-LDEV# M
devgroup1 pair1(L) (CL1-C , 0, 20)12345 609..S-VOL PAIR ASYNC,-----, 1     - 
devgroup1 pair1(R) (CL1-A , 0, 1) 54321   1..P-VOL PAIR ASYNC,12345, 609   - 
devgroup1 pair2(L) (CL1-C , 0, 21)12345 610..S-VOL PAIR ASYNC,-----, 2     - 
devgroup1 pair2(R) (CL1-A , 0, 2)54321    2..P-VOL PAIR ASYNC,12345, 610   -

  3. Split the pair by using the pairsplit command and confirm that the secondary volumes on cluster-newyork are writable by using the -rw option.


    phys-newyork-1# pairsplit -g devgroup1 -rw 
phys-newyork-1# pairdisplay -g devgroup1
Group PairVol(L/R) (Port#,TID,LU),Seq#,LDEV#,P/S,Status,Fence,Seq#,P-LDEV# M 
devgroup1 pair1(L) (CL1-C , 0, 20)12345 609..S-VOL SSUS ASYNC, -----  1    - 
devgroup1 pair1(R) (CL1-A , 0, 1) 54321   1..P-VOL PSUS ASYNC,12345  609   W 
devgroup1 pair2(L) (CL1-C , 0,21) 12345 610..S-VOL SSUS ASYNC,-----   2    - 
devgroup1 pair2(R) (CL1-A , 0, 2) 54321   2..P-VOL PSUS ASYNC,12345  610   W

  4. Create a raw-disk device group on the partner cluster.

    Use the same device group name that you used on the primary cluster.

    You can use the same DIDs on each cluster. In the following command, the newyork cluster is the partner of the paris cluster.


    phys-newyork-1# cldevicegroup disable dsk/d5 dsk/d6
phys-newyork-1# cldevicegroup offline dsk/d5 dsk/d6
phys-newyork-1# cldevicegroup delete dsk/d5 dsk/d6
phys-newyork-1# cldevicegroup create -n phys-newyork-1,phys-newyork-2 \
-t rawdisk -d d5,d6 rawdg

  5. Check that the device group rawdg was created.


    phys-newyork-1# cldevicegroup show rawdg

  6. Synchronize the volume manager information with the Sun Cluster device group and verify the output.


    phys-newyork-1# cldevicegroup sync rawdg1
phys-newyork-1# cldevicegroup status

  7. Add an entry to the /etc/vfstab file on each node of the newyork cluster.


    /dev/global/dsk/d5s2 /dev/global/rdsk/d5s2 /mounts/sample ufs 2 no logging

  8. Create a mount directory on each node of the newyork cluster.


    phys-newyork-1# mkdir -p /mounts/sample
phys-newyork-2# mkdir -p /mounts/sample

  9. Create an application resource group, apprg1, by using the clresourcegroup command.


    phys-newyork-1# clresourcegroup create apprg1

  10. Create the HAStoragePlus resource in apprg1.


    phys-newyork-1# clresource create -g apprg1 -t SUNW.HAStoragePlus \
-p FilesystemMountPoints=/mounts/sample -p Affinityon=TRUE \
-p GlobalDevicePaths=rawdg1 rs-hasp

    This HAStoragePlus resource is required for Sun Cluster Geographic Edition systems, because the software relies on the resource to bring the device groups and file systems online when the protection group starts on the primary cluster.

  11. If necessary, confirm that the application resource group is correctly configured by bringing it online and taking it offline again.


    phys-newyork-1# clresourcegroup switch -emM -n phys-newyork-1 apprg1
phs-newyork-1# clresourcegroup offline apprg1

  12. Unmount the file system.


    phys-newyork-1# umount /mounts/sample

  13. Take the Sun Cluster device group offline.


    phys-newyork-1# cldevicegroup offline rawdg1

  14. Reestablish the Hitachi TrueCopy or Universal Replicator pair.


    phys-newyork-1# pairresync -g devgroup1
phys-newyork-1# pairdisplay -g devgroup1
Group PairVol(L/R) (Port#,TID,LU),Seq#,LDEV#,P/S,Status,Fence,Seq#,P-LDEV# M 
devgroup1 pair1(L) (CL1-C , 0, 20)12345 609..S-VOL PAIR ASYNC,-----   1    - 
devgroup1 pair1(R) (CL1-A , 0, 1) 54321   1..P-VOL PAIR ASYNC,12345  609   W 
devgroup1 pair2(L) (CL1-C , 0,21) 12345 610..S-VOL PAIR ASYNC,-----   2    - 
devgroup1 pair2(R) (CL1-A , 0, 2) 54321   2..P-VOL PAIR ASYNC,12345  610   W

    Initial configuration on the secondary cluster is now complete.