For proxy object related errors, in one of the following circumstances, take action as indicated for the relevant situation.
(1) The Advanced Copy function cannot be used in master-proxy copying.
Explanation
The method handling copying from a master to a proxy can be checked in the CPTYPE field that is displayed with the sdxinfo command. When the CPTYPE field displays soft, instead of the Advanced Copy function of ETERNUS Disk storage system, the GDS soft copy function is performing the copy operation.
The following eight possible causes can create a situation where the Advanced Copy function is not used.
The disk array unit's Advanced Copy mechanism was not configured properly.
After GDS Snapshot was installed, the node was not rebooted.
EC or REC sessions exist between the master and another proxy and OPC cannot be used.
Multiple proxy volumes are related to a master volume, and the number of proxy volumes with EC or REC session settings has reached the upper limit (16 volumes).
The mirroring configuration of proxy volumes is two-way or more multiplex mirroring.
The group to which master volumes or proxy volumes belong has a lower level group connected.
The disk array unit to which the master or the proxy belongs does not support the Advanced Copy function.
An error occurred in the disk array unit or the Fibre Channel route.
For details, see "A.2.23 Using the Advanced Copy Function in a Proxy Configuration."
Resolution
Check the disk array settings and the GDS object configuration and identify the cause, and take the following actions according to the cause.
In the event of (Cause a), set up the disk array unit's Advanced Copy feature.
In the event of (Cause b), reboot all nodes in the cluster system.
In the event of (Cause c) or (Cause d), take the following action (Resolution 1) or (Resolution 2).
(Resolution 1)
Part a proxy with EC or REC session settings from the target master.
Cancel EC or REC sessions of step 1. using the sdxproxy Cancel command.
(Resolution 2)
Cancel the relationship between the target master and a proxy with EC or REC session settings.
In the even of (Cause e) to (Cause g), according to need, select another object, or change the object configuration.
In the event of (Cause h), recover the disk array unit error or the Fibre Channel route error.
