open-nomad/.changelog/12112.txt

```release-note:bug
csi: Fixed a bug where the maximum number of volume claims was incorrectly enforced when an allocation claims a volume
```
CSI: enforce usage at claim time (#12112) * Remove redundant schedulable check in `FreeWriteClaims`. If a volume has been created but not yet claimed, its capabilities will be checked in `WriteSchedulable` at both scheduling time and claim time. We don't need to also check them in the `FreeWriteClaims` method. * Enforce maximum volume claims for writers. When the scheduler checks feasibility for CSI volumes, the check is fairly loose: earlier versions of the same job are not counted as active claims. This allows the scheduler to place new allocations for the new version of a job, under the assumption that we'll replace the existing allocations and their volume claims. But when the alloc runner claims the volume, we need to enforce the active claims even if they're for allocations of an earlier version of the job. Otherwise we'll try to mount a volume that's currently being unmounted, and this will cause replacement allocations to frequently fail. * Enforce single-node reader check for read-only volumes. When the alloc runner makes a claim for a read-only volume, we only check that the volume is potentially schedulable and not that it actually has free read claims. 2022-02-24 14:37:37 +00:00			```release-note:bug
			`csi: Fixed a bug where the maximum number of volume claims was incorrectly enforced when an allocation claims a volume`
			```