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KEP-6030keps/sig-node/6030-dynamic-resize-of-memory-backed-volumes

Dynamic Resize of Memory-Backed Volumes

implementablebetasig-nodelatest v1.38
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This KEP proposes a mechanism to dynamically resize emptyDir volumes with medium: Memory (tmpfs) without requiring Pod recreation or Pod restart, and while maintaining the files already written to the volume's filesystem. It leverages the InPlacePodVerticalScaling (IPPVS) infrastructure to manage the transition from the desired state to the actual state via… Full summary

This KEP proposes a mechanism to dynamically resize emptyDir volumes with medium: Memory (tmpfs) without requiring Pod recreation or Pod restart, and while maintaining the files already written to the volume's filesystem. It leverages the InPlacePodVerticalScaling (IPPVS) infrastructure to manage the transition from the desired state to the actual state via an allocation and actuation loop.

Facts

Authors
@natasha41575
Approvers
@msau42@jsafrane@dchen1107@tallclair
Reviewers
@msau42@jsafrane@tallclair@ndixita
PRR approvers
@kannon92alpha@kannon92beta
Tracking issue
#6030(opens GitHub in a new tab) openmilestone v1.38sig/nodesig/storagestage/betatracked/yeslead-opted-in
Milestones
alpha v1.37beta v1.38
Participating SIGs
sig-storage
Feature gates
InPlacePodVerticalScalingMemoryBackedVolumes
Created / last updated
2026-04-27 / none
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