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Description

Update docs for KEP-4876: Mutable CSINode Allocatable Property.

Issue

kubernetes/enhancements#4876

Signed-off-by: Eddie Torres <torredil@amazon.com>
@k8s-ci-robot k8s-ci-robot added this to the 1.36 milestone Jan 14, 2026
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@k8s-ci-robot k8s-ci-robot added the language/en Issues or PRs related to English language label Jan 14, 2026
@k8s-ci-robot k8s-ci-robot added size/XS Denotes a PR that changes 0-9 lines, ignoring generated files. cncf-cla: yes Indicates the PR's author has signed the CNCF CLA. labels Jan 14, 2026
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defaultValue: true
fromVersion: "1.36"
---
When this feature gate is enabled, the `.spec.drivers[*].allocatable.count` field of a CSINode becomes mutable, and a new field, `nodeAllocatableUpdatePeriodSeconds`, is available in the CSIDriver object. This allows periodic updates to a node's reported allocatable volume capacity, preventing stateful pods from becoming stuck due to outdated information that the kube-scheduler relies on.
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Suggested change
When this feature gate is enabled, the `.spec.drivers[*].allocatable.count` field of a CSINode becomes mutable, and a new field, `nodeAllocatableUpdatePeriodSeconds`, is available in the CSIDriver object. This allows periodic updates to a node's reported allocatable volume capacity, preventing stateful pods from becoming stuck due to outdated information that the kube-scheduler relies on.
Make the `.spec.drivers[*].allocatable.count` field of a CSINode mutable.
Also, enable a CSIDriver field, `nodeAllocatableUpdatePeriodSeconds`.
This allows periodic updates to a node's reported allocatable volume capacity,
preventing stateful pods from becoming stuck due to outdated information
that the kube-scheduler would otherwise rely upon.

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The gate will (after graduation to general availability) typically be enabled.

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