Correcting replication session problems
This topic offers help in resolving
various problems with a Replication Manager session. Any error messages that
resulted from the creation of the session, such as Not enough targets
for sources or No path established , will be reflected in
the status, nonapproved copy sets, invalid copy sets, and exception information
provided in the Sessions properties panel.
Problem
A replication session failed or generated error messages.
Investigation steps
Check session status
- Check the status of the session in the Sessions table:
- In the IBM Director Task pane, click Multiple Device
Manager.
- Click Manage Replication.
- Click Sessions. The Sessions panel opens.
- In the Sessions table, select the session that you want to check.
- Click Properties. The Sessions Properties Notebook
opens.
 | Note: The notebook is divided into three sections: General,
Copysets, and Sequences. If there are status problems within one of these
sections, the tab for that section is the first tab that is displayed when
you select Properties. |
- Click Status. The following information about the
status of the selected session is displayed:
- Normal
- All source volumes are duplex, and the copy is active. All volumes were
established successfully.
- Error
- At least one volume has not reached duplex during the synchronization-resynchronization
process.
- Severe
- An error caused shadowing or, for a fibre-channel connection, a volume
failed to be established.
Investigation steps
Try the following actions
to resolve the problem:
Check nonapproved and invalid Copysets for
problems with a target volume
- If a session status is in an error or severe condition, find the target
volume that is causing the problem in the Copy set panels.
- Click the Copy set tab in the Session Properties
Notebook. The Copy set panel opens. Check for problems in the following tables:
- In the Copyset table, the Last Result column displays the latest message
issued for a copy set, and indicates if the copy set is invalid and the reason
why it is invalid.
- In the Copyset Relationships table, the Last Result column displays the
last message issued for a copy-set pair. If a message ends in E or W, then
the pair is considered an exception pair.
- Check for invalid copy sets:
- Click the Group level control list.
- Select Show invalid copy sets.
- Click Copy set details. The details for all invalid
copy sets are displayed.
-
Select the invalid copy set for which you want to add or
modify the target.
- Click Modify copy set target. The Choose Target
wizard opens.
- Select a target volume from the Available target volumes table. (This
table shows all volumes that are available to the copy set that you selected
in step 3.)
- Click Finish to save the changes you made in the
notebook. The notebook closes.
Investigation steps
Try the following actions
to resolve the problem:
Check for exception information
- If a session status is in an error or severe condition, check for exception
information in the Sequences panels.
- Click the Sequences tab in the Session Properties
Notebook. The Sequences panel opens and displays the Sequences table.
- In the Copyset table, the Last Result column displays the latest message
issued for a copy set, and indicates if the copy set is invalid and the reason
why it is invalid.
- In the Copyset Relationships table, the Last Result column displays the
last message issued for a copy-set pair. If a message ends in E or W, then
the pair is considered an exception pair.
- Check for exception pairs:
- Click the drop-down list.
- Select Show exception pairs.
- Click Pairs. The Pairs table is displayed, filtered
for all exception pairs.
- For additional information, view information about the volumes in the
Pairs table:
- Select a source volume, then click Source volume relationships to view the relationships for the source volume.
- Select a target volume, then click Target volume relationships to view the relationships for the target volume.
- When you have discovered which volume pair is causing the exception, click Change target. The Select target page is displayed.
- Select a target volume from the Available target volumes table.
- Click OK to save the change.
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