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disk/snapshot: wait for cut #1225

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@huww98 huww98 commented Nov 20, 2024

What type of PR is this?

/kind bug

What this PR does / why we need it:

CSI requires us to ensure the snapshot is cut before returning. Implementing this by describe the just created snapshot and ensure its CreationTime is set.

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?

We now properly ensure the snapshot is cut before creating the VolumeSnapshotContent

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:


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Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

@k8s-ci-robot k8s-ci-robot added do-not-merge/work-in-progress Indicates that a PR should not merge because it is a work in progress. kind/bug Categorizes issue or PR as related to a bug. labels Nov 20, 2024
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[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: huww98
Once this PR has been reviewed and has the lgtm label, please assign mowangdk for approval. For more information see the Kubernetes Code Review Process.

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@k8s-ci-robot k8s-ci-robot added cncf-cla: yes Indicates the PR's author has signed the CNCF CLA. size/XL Denotes a PR that changes 500-999 lines, ignoring generated files. labels Nov 20, 2024
@huww98 huww98 force-pushed the disk-wait-snap branch 2 times, most recently from 8d54165 to 26a8d22 Compare November 22, 2024 07:50
@huww98 huww98 marked this pull request as ready for review November 22, 2024 07:50
@k8s-ci-robot k8s-ci-robot removed the do-not-merge/work-in-progress Indicates that a PR should not merge because it is a work in progress. label Nov 22, 2024
A central place for all disks pending status changes (attaching/detaching).
Waiter will poll disk status in batch and wake up the caller if the status has changed.

The motivation is reducing OpenAPI call count, to avoid triggering throttling, thus improve system throughput.

Also include a simple fallback waiter to support multi-tanent use-case.

Shared disk support is best effort, since we cannot create new shared disks for test now.

Note: We have observed that after AttachDisk returns, the status remains Available for a short period, so don't rely on disk.Status in pred.
to support disk and snapshot with the same codebase.
should be reverted once we have a ecsClient that can refresh its credentials
CSI expect us to return the latest info each time CreateSnapshot is called.
Also retrieves the latest info about the snapshot, e.g. readyToUse.
We have client token now, and we will not create multiple snapshots for one VS object.

And we still always describe snapshot at least once, so we sill have the latest info about it.
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