KEP-4191keps/sig-node/4191-split-image-filesystem

Split Image Filesystem

implementablebetasig-nodelatest v1.311 open finding

KEP on GitHub kep.yaml Ask about this KEP

This KEP is about enhancing kubelet to be aware if a container runtime splits the image filesystem. Aware in this case means that garbage collecting images, containers and reporting disk usage is all functional.

Facts

Authors: @kannon92
Approvers: @dchen1107
Reviewers: @haircommander @rphillips @ruiwen-zhao
PRR approvers: @johnbelamaricalpha@johnbelamaricbeta
Tracking issue: #4191(opens GitHub in a new tab) closednot_plannedclosed 2026-10-17 21:02 UTCmilestone v1.31sig/nodestage/betalifecycle/rotten
Milestones: alpha v1.29beta v1.31
Participating SIGs: sig-storage
Feature gates: KubeletSeparateDiskGC
Created / last updated: 2023-09-06 / none

Who decided each state, with the evidence.
Decided	Decision	Deciders	Evidence
2023-09-06 20:18 UTC	prr_approval johnbelamaric gave the production readiness approval for KEP-4191 at alpha on 2023-09-06.	@johnbelamaric prr_approver	Document 4191.yaml(opens GitHub in a new tab)
2023-10-05 18:40 UTC	stage_graduation KEP-4191 set milestone.alpha to v1.29 in PR #4198, approved by dchen1107, johnbelamaric; merged by automation (k8s-ci-robot) on 2023-10-05.	@kannon92 author @dchen1107 approve_command @dchen1107 lgtm @haircommander lgtm @johnbelamaric approve_command @johnbelamaric lgtm @ruiwen-zhao lgtm @k8s-ci-robot merger	Commit kubernetes/enhancements@14c0960614f9c420bfcd861d004347efe44410b5(opens GitHub in a new tab) StatusChange milestone.alpha ∅ → v1.29 (2023-09-06)(opens GitHub in a new tab) PullRequest kubernetes/enhancements#4198 KEP-4191 Split Image Filesystem(opens GitHub in a new tab) Comment kubernetes/enhancements/issues/comments/1749437384(opens GitHub in a new tab) Comment kubernetes/enhancements/issues/comments/1747510621(opens GitHub in a new tab) Comment kubernetes/enhancements/issues/comments/1743660118(opens GitHub in a new tab) Comment kubernetes/enhancements/issues/comments/1743656761
2023-10-05 18:40 UTC	stage_graduation KEP-4191 graduated to alpha in PR #4198, approved by dchen1107, johnbelamaric; merged by automation (k8s-ci-robot) on 2023-10-05.	@kannon92 author @dchen1107 approve_command @dchen1107 lgtm @haircommander lgtm @johnbelamaric approve_command @johnbelamaric lgtm @ruiwen-zhao lgtm @k8s-ci-robot merger	Commit kubernetes/enhancements@14c0960614f9c420bfcd861d004347efe44410b5(opens GitHub in a new tab) StatusChange stage ∅ → alpha (2023-09-06)(opens GitHub in a new tab)
2023-10-05 18:40 UTC	status_transition KEP-4191 status set to implementable in PR #4198, approved by dchen1107, johnbelamaric; merged by automation (k8s-ci-robot) on 2023-10-05.	@kannon92 author @dchen1107 approve_command @dchen1107 lgtm @haircommander lgtm @johnbelamaric approve_command @johnbelamaric lgtm @ruiwen-zhao lgtm @k8s-ci-robot merger	Commit kubernetes/enhancements@14c0960614f9c420bfcd861d004347efe44410b5(opens GitHub in a new tab) StatusChange status ∅ → implementable (2023-09-06)(opens GitHub in a new tab)
2024-02-07 16:28 UTC	milestone_retarget KEP-4191 latest-milestone moved from v1.29 to v1.30 in PR #4488, approved by mrunalp; merged by automation (k8s-ci-robot) on 2024-02-07.	@kannon92 author @mrunalp approver @bart0sh lgtm @k8s-ci-robot merger	Commit kubernetes/enhancements@e1701119f05d153ed9dca2785319fcb3c218775d(opens GitHub in a new tab) StatusChange latest_milestone v1.29 → v1.30 (2024-02-07)(opens GitHub in a new tab) PullRequest kubernetes/enhancements#4488 KEP-4191: update latest milestone to 1.30(opens GitHub in a new tab) Review kubernetes/enhancements/pulls/reviews/1868238988
2024-06-03 07:22 UTC	prr_approval johnbelamaric gave the production readiness approval for KEP-4191 at beta on 2024-06-03.	@johnbelamaric prr_approver	Document 4191.yaml(opens GitHub in a new tab)
2024-06-12 17:52 UTC	milestone_retarget KEP-4191 latest-milestone moved from v1.30 to v1.31 in PR #4684, approved by mrunalp, johnbelamaric; merged by automation (k8s-ci-robot) on 2024-06-12.	@mrunalp approver @mrunalp lgtm @johnbelamaric approve_command @johnbelamaric lgtm @k8s-ci-robot merger @kwilczynski author	Commit kubernetes/enhancements@220df51065b04403624c7f7673efe2cbb4ace2e7(opens GitHub in a new tab) StatusChange latest_milestone v1.30 → v1.31 (2024-06-03)(opens GitHub in a new tab) PullRequest kubernetes/enhancements#4684 KEP-4191: Split Image Filesystem graduation to Beta
2024-06-12 17:52 UTC	stage_graduation KEP-4191 set milestone.beta to v1.31 in PR #4684, approved by mrunalp, johnbelamaric; merged by automation (k8s-ci-robot) on 2024-06-12.	@mrunalp approver @mrunalp lgtm @johnbelamaric approve_command @johnbelamaric lgtm @k8s-ci-robot merger @kwilczynski author	Commit kubernetes/enhancements@220df51065b04403624c7f7673efe2cbb4ace2e7(opens GitHub in a new tab) StatusChange milestone.beta ∅ → v1.31 (2024-06-03)(opens GitHub in a new tab) PullRequest kubernetes/enhancements#4684 KEP-4191: Split Image Filesystem graduation to Beta
2024-06-12 17:52 UTC	stage_graduation KEP-4191 graduated to beta from alpha in PR #4684, approved by mrunalp, johnbelamaric; merged by automation (k8s-ci-robot) on 2024-06-12.	@mrunalp approver @mrunalp lgtm @johnbelamaric approve_command @johnbelamaric lgtm @k8s-ci-robot merger @kwilczynski author	Commit kubernetes/enhancements@220df51065b04403624c7f7673efe2cbb4ace2e7(opens GitHub in a new tab) StatusChange stage alpha → beta (2024-06-03)(opens GitHub in a new tab) PullRequest kubernetes/enhancements#4684 KEP-4191: Split Image Filesystem graduation to Beta(opens GitHub in a new tab)

Metadata, label and milestone changes, oldest first.Showing 1–10 of 47Rows

Status history
At	Kind	Field	Change	Actor	Evidence
2023-09-06 20:14 UTC	label	needs-sig added	none → needs-sig	@k8s-ci-robot	source(opens GitHub in a new tab)
2023-09-06 20:18 UTC	metadata	approvers set	none → ["dchen1107"]	none

Relationships as stored, Person → KEP, from kep.yaml(opens GitHub in a new tab)
Person	Relationship
@kannon92 GitHub(opens GitHub in a new tab)	—AUTHORED→
@haircommander GitHub(opens GitHub in a new tab)	—REVIEWS→
@rphillips GitHub(opens GitHub in a new tab)	—REVIEWS→
@ruiwen-zhao

2 nodes · 1 relations

KEP 2

Relations and who declared them
Relation	KEP	Status	Declared by
see also	KEP-2371 cAdvisor-less, CRI-full Container and Pod Stats	implementable	none

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