What is your lwm set at and defrag-sleep? Can you shoot us output of sar -d -p so we can see disk util? Since defrag isnt keeping up, we could make it more aggressive… but if your disks are already going over 90% chances are you need more IO.
As far as upgrade gotcha’s, you can find them here- Aerospike Server CE Release Note | Download | Aerospike
- When upgrading the Aerospike server, from a version prior to 4.6 , with the security feature enabled, make sure all Aerospike Clients are running a compatible version . (Enterprise Only)
- When upgrading the Aerospike server, from a version prior to 4.5.1 , follow the 4.5 special upgrade document 4.5.1+ SMD protocol change.
- When upgrading the Aerospike server, from a version prior to 4.3 with replication-factor of 2 or greater along with the use of the rack-aware feature in AP namespaces, refer to the special considerations knowledge base article for details. (Enterprise Only)
- When upgrading the Aerospike server, from a version prior to 4.2 , follow the 4.2 special upgrade steps document Storage Format Upgrade in 4.2 Release.
- When upgrading the Aerospike server, from a version prior to 3.14 , please follow the upgrade and protocol-switching PREREQUISITES for 3.13.0.11 documentation for Upgrade to 3.13.
outside of that you should be good