The figure given by the Snapshot reserve used (GB) metric of the NetApp Plugin in Oracle Enterprise Manager appears to be wrong.
For example, we have a volume whose snapshot reserve metrics in OEM claim to be:
Snap reserve info > reserve used (GB): 22.4
Snap reserve info > reserve total (GB): 522.2
Snap reserve info > reserve used (%): 4.3
Doing a Unix df on the volume gives:
Filesystem total used available capacity
vol/xxxxx/.snapshot 522GB 354GB 167GB 68%
The df gives figures we would expect given the snapshots we know to be in there, suggesting the OEM figures are wrong.
Any advice would be gratefully received.
latest plugin resolves this. more detail in this post: http://community.netapp.com/t5/Data-ONTAP-Related-Plug-ins-Discussions/NetApp-Storage-System-Plug-In-12-1-0-2-1-For-OEM-12c-Volume-space-used-alert-is...