The total cache space occupied by pinned volumes is normally limited within the specified total volume pinning space. However, when a physical disk or node fails, the total volume pinning space decreases while the allocated pinning space remains unchanged, which may cause the actual utilization ratio to exceed the specified threshold.
The cluster cache occupied by the pinned volumes has reached { .labels.name }.
New volumes cannot have volume pinning enabled.
I/O requests to existing pinned volumes may not be fully served from the cache tier.
If the issue is caused by a faulty cache disk, I/O performance for non-pinned volumes may degrade due to the remaining cache disks on the affected node being heavily contended.
A physical disk or node providing volume pinning has failed or been removed by mistake, reducing the total available volume pinning space.
Repair hardware failures first, such as physical disk and node failures. Once the hardware failures are resolved, the volume pinning utilization ratio will automatically recover within the threshold, and the alert will clear automatically.
If the failure cannot be repaired in the short term and workload I/Os have already been affected, you can temporarily convert some pinned volumes to non-pinned volumes based on workload priority to reduce cache space consumption and ensure normal operations.
