Troubleshooting - IntelliSnap for UNIX File System

Backup Failures

Backup Fails

IntelliSnap backups may fail in the scan phase when data paths are greater than 1024 bytes with the error message:

Scan error encountered for /opt/commvault/MediaAgent/SnapVolumeMounts/SnapMnt_1_2_21252_10_362 [Too many open files], please check ulimit values and set appropriate values if needed and restart services.

To resolve this, you can increase the number of open files using the following steps:

Stop Commvault services on the client.
Run the ulimit command.
```
 
ulimit –n <NNNN>
        
    
```
where NNNN is the number of open files
Start Commvault services.

Failure during mount of second logical volume having the first logical volume already mounted

You have two logical volumes on the same physical volume group. After performing an IntelliSnap backup on a subclient which has both logical volumes as content, you proceed to mount each logical volume. After successfully mounting the first volume, an error will be displayed while trying to mount the second one saying the mount operation failed during the volume group recreation. Although the mount operation was not successful, the second logical volume will show as mounted in the Snapshots created during IntelliSnap operation window of the CommCell Console. In this scenario, proceed to unmount the second logical volume.

From the CommCell Console, right-click the entity that contains the snapshots you want to browse, and click All Tasks | List Snapshots.
From the Snapshots created during IntelliSnap operation window, right-click the logical volume and select Unmount.
Click Yes.

To avoid this issue on future mount operations, it is recommended to mount one of the logical volumes, and not both.

IntelliSnap failure at the vgimport phase on an IA64 machine running HP-UX

On an IA64 machine running HP-UX, IntelliSnap job may fail at the vgimport phase with an error message if the maximum number of volume groups allowed on the machine is exhausted. For example,

<Failure during recreate VG. Error [Failed import: vgimport -v -m /opt/commvault/Base/Temp/vg_test_1360887863.map /dev/vg_test_1360887863 /dev/dsk/c20t0d2 14672 Error: vgimport: Cannot open the control file "/dev/vg_test_1360887863/group":

In such cases, use the following steps to increase the maximum number of volume groups and resume the job:

Check the maxvgs parameter using query:
```
kctune -v maxvgs
        
    
```

Check the maximum minor number, represented as NN, in the output below using the following command. For example,

ls -l /dev/vg_test_1360887863 crw-r----- 1 root dba 128 <0xNN0000> Dec 17 16:00 group

If the maximum value of the minor number determined in the previous step is equal to the maxvgs parameter then modify it to accommodate more volume groups. For example,
```
kctune maxvgs=50
        
    
```
Reboot the machine.

GPFS Mount Error

When you get the following error, use a proxy GPFS cluster to mount the file system for GPFS, DB2 pureScale IntelliSnap operations.

Error [Clone cannot be mounted on old cluster for GPFS where the filesystem already exists.]