background image

12

  

VCS Application Note: Sun Enterprise 10000 Dynamic Reconfiguration 
Using VM without DMP enabled 

hagrp -unfreeze 

ser_grp_name

 

Repeat for each service group. 

Verify that VCS is still up and running. 

Using VM without DMP enabled 

If you have the Volume Manager DMP feature disabled for some or all of the 
disks in the shared storage, and you must perform DR operations within the 
cluster, we recommend using the VCS DiskReservation agent to guard against 
data corruption. In the event of a “split-brain” condition, that is, when two 
processors in a cluster can simultaneously write to the shared storage, the 
DiskReservation agent ensures that only one processor has access to the storage 
at one time. See the 

VCS Bundled Agents Reference Guide

 for information on 

configuring the DiskReservation agent. 

Summary of Contents for Veritas Solaris

Page 1: ...Veritas Cluster Server Application Note Sun Enterprise 10000 Dynamic Reconfiguration Solaris 5 0 N18540F...

Page 2: ...s licensors if any THIS DOCUMENTATION IS PROVIDED AS IS AND ALL EXPRESS OR IMPLIED CONDITIONS REPRESENTATIONS AND WARRANTIES INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY FITNESS FOR A PARTICULAR...

Page 3: ...rights associated with this product are listed in the accompanying release notes Solaris is a trademark of Sun Microsystems Inc Technical support For technical assistance visit http support veritas co...

Page 4: ......

Page 5: ...VCS Application Note Sun Enterprise 10000 Dynamic Reconfiguration Introduction Supported hardware Supported software Dynamic reconfiguration in VCS environment Using VM without DMP enabled...

Page 6: ...or reconfigure it into the domain Note Currently VCS does not support using DR in clusters where I O controllers and storage use Sun s Alternate Pathing AP In a VCS cluster of domains it s possible t...

Page 7: ...ing environment variable to enable DR Before performing DR operations on a domain you must first set the appropriate environment variable Enable the kernel cage variable for DR Using the Solaris 8 ope...

Page 8: ...can be physically removed Replacing the board a controller board in this case involves physically installing it and reconnecting it to the shared storage Reconfiguring the board requires using DR com...

Page 9: ...rain 9 When you see the message Percent Complete 100 0 KBytes remaining complete the detach operation dr complete_detach sb 10 To verify that the board is no longer configured type the following comma...

Page 10: ...hagrp unfreeze ser_grp_name Repeat for each service group 9 Verify that VCS is still up and running Detaching CPU memory boards Note Use the following procedure if no I O devices on the system board...

Page 11: ...ry boards Note Use the following procedure if none of the I O devices on the system board are used 1 Freeze the VCS service groups running on the domain where you intend to attach a system board Repea...

Page 12: ...of the disks in the shared storage and you must perform DR operations within the cluster we recommend using the VCS DiskReservation agent to guard against data corruption In the event of a split brain...

Reviews: