PRIMECLUSTER Global Disk Services Configuration and Administration Guide 4.1 (Solaris(TM) Operating System)

F.1.7 Proxy Object Abnormality

For proxy object related errors, in one of the following circumstances, take action as indicated for the relevant situation.

• The Advanced Copy function cannot be used in master-proxy copying.
  
  

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(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 Fujitsu Storage Systems ETERNUS, the GDS soft copy function is performing the copy operation.

# sdxinfo -S -e long -o pv1

OBJ    NAME         CLASS   GROUP   DISK    VOLUME  JRM MODE STATUS   COPY CURBLKS  COPYBLKS DLY CPTYPE CPSOURCE
------ ------------ ------- ------- ------- ------- --- ---- -------- ---- -------- -------- --- ------ --------
slice  *            Class1  Group1  Disk1   pv1     *   *    COPY     run  93952    10027008 0   soft   *

The following ten possible causes can create a situation where the Advanced Copy function is not used.

(Cause a)

The disk array unit's Advanced Copy mechanism was not configured properly.

(Cause b)

When a disk constituting the master or the proxy was registered with a class, the disk array unit's Advanced Copy mechanism was not configured properly.

(Cause c)

A disk constituting the master or the proxy was registered with a class in a situation where GDS Snapshot was not installed.

(Cause d)

After GDS Snapshot was installed, the node was not rebooted.

(Cause e)

EC or REC sessions exist between the master and another proxy and OPC or ROPC cannot be used.

(Cause f)

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).

(Cause g)

The mirroring configuration of proxy volumes is two-way or more multiplex mirroring.

(Cause h)

The group to which master volumes or proxy volumes belong has a lower level group connected.

(Cause i)

The disk array unit to which the master or the proxy belongs does not support the Advanced Copy function.

(Cause j)

An error occurred in the disk array unit or the Fibre Channel route.

For details, see "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), follow the procedures below.

  1. Configure the disk array unit's Advance Copy mechanism.

  2. Back up master and proxy volume data if necessary.

  3. Delete the disks constituting the master and the proxy from their classes.

  4. Register the disks deleted from the classes in step 3) back to the classes.

  5. Create master and proxy volumes and restore the data backed up in step 2) as needed.
     
     

• In the event of (Cause b) or (Cause c), follow the procedures below.

  1. Back up master and proxy volume data if necessary.

  2. Among the disks constituting the master and the proxy, delete disks registered with classes before configuring the Advance Copy mechanism or installing GDS Snapshot from their classes.

  3. Register the disks deleted from the classes in step 4) back to the classes.

  4. Create master and proxy volumes and restore the data backed up in step 1) as needed.
     
     

• In the event of (Cause d), follow the procedures below.

  1. Reboot the node.

  2. Back up master and proxy volume data if necessary.

  3. Delete the disks constituting the master and the proxy from their classes.

  4. Register the disks deleted from the classes in step 3) back to the classes.

  5. Create master and proxy volumes and restore the data backed up in step 2) as needed.
     
     

• In the event of (Cause e) or (Cause f), take the following action (Resolution 1) or (Resolution 2).

  (Resolution 1)

  1. Part a proxy with EC or REC session settings from the target master.

  2. Cancel EC or REC sessions of step 1) using the sdxproxy Cancel command.
     
     

  (Resolution 2)

  1. Cancel the relationship between the target master and a proxy with EC or REC session settings.

     
     

• In the event of (Cause g) to (Cause i), select another object, or change the object configuration.
  
  

• In the event of (Cause j), recover the disk array unit error or the Fibre Channel route error.