4450 Unable to create a highly available snapshot.
Explanation
When a partition has a high availability (HA) replication policy, this error code is logged if a snapshot of a volume group created in that partition cannot be made highly available. This means that the snapshot is created on the local system but not on the remote.
- Event ID 051036
- The system was unable to access the remote system to create a highly available snapshot.
- Event ID 051040
- There was an interruption to high availability between the systems at the time of the snapshot.
- Event ID 051041
- The remote system is unable to create the highly available snapshot. In this case, the event sense data captures the details of the command that failed on the remote system.
- Event ID 051042
- An error occurred while attempting to create a highly available snapshot.
- Event ID 051057
- A highly available snapshot could not be created because a volume in the volume group has an internal capacity that is different than its provisioned capacity.
For Event ID 051057 only, the snapshot could not be made HA because of a volume in the volume group on the system on which the event was raised with an internal capacity greater than its provisioned capacity. This situation can occur if an attempt to expand the size of the volume fails while it is replicated. Further snapshots on that volume group can not be made HA until this is resolved.
Until this event is marked as fixed, the event is updated to include the ID of the latest highly available snapshot that was attempted and the count indicates the number of snapshots that failed in this way between the first and latest timestamps of the event. In this case, the multiple snapshots might be of different volume groups in the partition. Compare the snapshots on the local system to those on the remote to determine which snapshots are missing.
If the cause of the event is not resolved, highly available snapshots might continue to fail in the same way.
It is not possible to retrospectively make a local snapshot highly available.
User response
Troubleshoot the remote and local systems to identify other events in the system logs that might be the cause of this failure.
When you have resolved the cause of the failure, trigger fresh HA snapshots, as required.
If HA snapshots are being created successfully, mark the event as fixed.
Using the command-line interface, use the lsvdisk command to identify the volume in the volume group with an 'internal_capacity' value that is different to the 'capacity' value.
Use the chvolume -size command to expand the provisioned capacity of the volume so that is at least the size of the internal capacity.