How to resize the Storage Replicator Log volume in VERITAS Volume Replicator

[해리]

https://support.symantec.com/en_US/article.TECH10377.html

Problem

How to resize the Storage Replicator Log volume in VERITAS Volume Replicator

Solution

The Storage Replicator Log (SRL) volume can not be resized while replication is active. To resize the SRL volume, dissociate it from the replicated volume group (RVG). To prepare for a secondary node to take over as a primary, it is recommended that the SRLs be the same size on the primary node as on the secondary. For example,  to grow the SRL by 500 megabytes,  follow the procedure below,  performing each step on the primary and all secondary nodes, except where noted.

If rvg is managed by VCS, please refer SF4.0 vvr admin guide for SRL increase .

To resize the SRL on the Primary :


1. On the primary node, stop all the applications involved in replication with this RVG. For example, if a data volume contains a file system, unmount it:

         
            # umount /data1

2. On the primary, verify that all the RLINKs are up-to-date

# vxrlink -g <dg_name> status <rlink_name>
Note: Do not continue until the RLINKs are up-to-date

3. On the primary,Stop the replicated volume groups which need a resized SRL:

# vxrvg -g <dg_name> stop <rvg_name>

4. On the primary, Detach the rlink from the RVG

# vxrlink -g <dg_name> det <rlink_name>

5. On the primary,Disassociate the SRL volume from the RVG

# vxvol -g <dg_name> dis <srl_name>


6. On the primary,Grow the SRL volume on all nodes(primary and secondaries):
     
           # vxassist -g  <dg_name> growby <srl_name> 500m

7.On the primary, Associate the SRL to the RVG(primary and secondaries):

            # vxvol -g <dg_name> aslog <rvg_name> <srl_name>

8. On the primary, Attach the RLINK to the RVG on the primary:

# vxrlink -g <dg_name> -f att <rlink_name>

9 .On the primary,Start the RVG: 

# vxrvg -g <dg_name> start <rvg_name>

10. On the primary, Mount the file systems and start the application:

     # mount -F vxfs /dev/vx/dsk/datadg/vol01 /data1


To resize the SRL on the Secondary 
Note that you do not need to stop the application. 
1.  Detach the RLINK:      
#  vxrlink -g <dg_name> det <rlink_name>
2.  Dissociate the SRL from the RVG. 
Note  Any checkpoints that you have created will be lost after dissociating the SRL. 
#  vxvol -g <dg_name> dis <srl_name> 
3.  Resize the SRL using the vxassist command. For example, to increase the size of the SRL: 

#  vxassist -g <dg_name> growto <srl_name> 500m

Note  It is recommended that the SRL reside on disks that are not being used for the data 
volumes. Also, it is recommended that the Primary and the Secondary SRLs be the 
same size  for optimal replication performance and possible replication role migration . See the vxassist(1M)  manual page for more information. 
4.  Reassociate the SRL with the RVG: 
#  vxvol -g <dg_name> aslog <rvg_name> <srl_name> 
5.  Attach the RLINK: 
#  vxrlink -g <dg_name> att <rlink_name>