Administrator Guide

Workaround
1 Check the FluidFS cluster Event Log for errors.
2 Verify that the user is not disabled or locked in Active Directory.
3 Verify that the domain controllers are online and reachable using the network.
4 The FluidFS cluster and Active Directory server must use a common source of time. Congure NTP and
verify the system time is in sync with the domain controller time.
Active Directory Conguration Issues
Description Unable to add Active Directory users and groups to SMB shares.
Cause Probable causes might be:
• Unable to ping the domain using a FQDN.
• DNS might not be congured.
• NTP might not be congured.
Workaround When conguring the FluidFS cluster to connect to an Active Directory domain:
1 Ensure that you use a FQDN and not the NetBIOS name of the domain or IP address of the domain
controller.
2 Ensure that the user has permissions to add systems to the domain.
3 Use the correct password.
4 Congure DNS.
5 The FluidFS cluster and Active Directory server must use a common source of time. Congure NTP and
verify the system time is in sync with the domain controller time.
6 If multiple NAS appliances are used, ensure that you set dierent NetBIOS names. The system defaults
to SMB Storage as the name.
Troubleshoot Backup Issues
This section contains probable causes of and solutions to common NDMP problems.
Troubleshooting Snapshots
Description
Snapshot creation and deletion fails.
Cause Probable causes might be:
• There are many client I/O requests waiting to be serviced, including a request to remove a large directory.
• There are many snapshot creation/deletion requests being currently processed.
• Another snapshot request for the NAS volume is currently being executed.
• The total number of snapshots reached the system limit.
• The wrong IP address was specied in the backup job.
Workaround
• For a manual request failure, retry taking or deleting the snapshot after a minute or two.
• If the request originated from the snapshot scheduler, wait another cycle or two. If the failure persists, try
taking or deleting the snapshot manually on the same NAS volume.
• If the system is under a heavy workload, wait until the workload decreases and reissue the snapshot
request.
• Check the snapshot schedule. A very dense snapshot schedule has a negative impact on the overall
performance of the system. The accumulated snapshot rate must not exceed 20 snapshots per hour per
system.
• Check the total number of snapshots in the system. If the number is in the thousands, delete a few
snapshots and retry.
496 FluidFS Administration