VERITAS Volume Manager 3.5 Administrator's Guide (September 2004)
Administering Dynamic Multipathing (DMP)
DMP in a Clustered Environment
Chapter 3130
The following error message is displayed:
vxvm: vxdmpadm: ERROR: operation not supported for shared disk arrays.
Operation of the DMP Restore Daemon with Shared
Disk Groups
The DMP restore daemon does not automatically failback I/O requests
for a disk in an active/passive disk array if that disk is a part of a shared
disk group.
When a restore daemon revives a DISABLED primary path to a shared
disk in an active/passive disk array, DMP does not route the I/O requests
automatically through the primary path, but continues routing them
through the secondary path. This behavior deviates from that in a single
host environment.
In a clustered environment, failback of I/O requests to the primary path
happens only when the secondary path becomes physically inaccessible
to the host.