Symptoms
An Avamar grid is operating well below maximum storage capacity but becomes ready only, enters admin mode and reports as full. The backup scheduler stops.
Client backups fail and client logs report:
avtar Info : Command failed (1 error, exit code 10028: Operation failed because target server is full)
Server logs report that the system has been changed to admin mode by diskbeat.
55141 {0.7} [diskbeat:195] WARN: storage threshold passed: server has changed to admin mode
On the utility node, the status.dpn command shows that all data partitions are well below the diskreadonly limit default of 65% but the space consumption between the data partitions is not evenly balanced.
Cause
The new Avamar server parameter "freespaceunbalance", introduced with version 5, monitors the amount of space free within data partitions.
If the percentage difference of free space between the most and least consumed data partitions is greater than freespaceunbalance, the server is placed into read-only mode.
Resolution
This event should be taken as a trigger to investigate why there are large differences between file system usage on the storage node data partitions.
