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NetVault Plug-in for SnapMirror to Tape 12.2 - User Guide

Mirroring process

Using the NetApp SnapMirror utility and Plug‑in for SnapMirror to Tape, you can take a snapshot from a NetApp filer and transfer it to a piece of media, and then mirror this data to a second filer. However, the plug-in does not control this aspect of the operation. It is solely handled by the NetApp utilities. For more information about this process, see the relevant NetApp documentation.

Viewing media list

The Media List option on the Create Restore Job — Choose Saveset page lets you view information about the media items used to store a backup. You can view details about the data segments and index segments for a backup.

1
On the Create Restore Job — Choose Saveset page, select the applicable saveset.
2
In the Saveset Information area, click Media List.
In the dialog box that is displayed, you can view the following details:
•
Backup size: This area shows the total size of the saveset in number of bytes
•
Data segment table: This table shows information about the media items that contain the data segments. You can view the following details: media label, media group label, stream ID, starting byte number, ending byte number, and media location
•
Index segment table: This table shows information about the media items that contain the index segments. You can view the media label and media location.
3
To close the dialog box, click Close.

Troubleshooting

•
Common errors

Common errors

The following is a list of some common errors and their solution.

 
Table 4. Troubleshooting
Description
Symptom
Solution

The NetVault Backup Service fails to start on a Windows-based NetVault Backup Server.

Check the Windows Event Viewer to see if it displays the following message:

PDT FATAL: lock file “postmaster.pid” already exists

NetVault Backup cannot start if the PostgreSQL database that is used to store the system data does not start.

To correct this issue, delete the “postmaster.pid” file from the location referenced in the log and restart the NetVault Backup Server.

After restarting the machine, the NetVault Backup Service sometimes fails to start on a Windows-based NetVault Backup Server.

Check the Windows Event Viewer to see if it displays the following message:

FATAL: could not create any TCP/IP sockets " for a PostgreSQL source

NetVault Backup cannot start if the PostgreSQL database that is used to store the system data does not start.

To correct this issue, start the Task Manager, and click Show processes from all users. You can see multiple instances of postgres32.exe running on the system. To remove all instances of postgres32.exe, select any one instance of this process, and click End Process. Then, start the NetVault Backup Service.

The NetVault Backup Service starts, and then stops immediately on a Linux-based machine.

No error messages are displayed.

This issue can occur if the Postgres service cannot resolve the host name localhost, and fails to start.

Check the /etc/hosts file, and if the file does not contain an entry for localhost, add the entry.

Restore fails with the message “Aborting: Destination volume, XXX, is too small.”

Restore fails immediately after media is assigned and the restore operation is started on the filer.

Add more disk space to the destination volume or choose another destination volume of sufficient capacity.

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