Aleksei Sviridkin
26e4083d52
## What this PR does This adds a LINSTOR server patch for a controller that could refuse every write of one property until it was restarted, which left a PV stuck in `Released` with its ZFS volume still allocated. It is a backport of LINBIT/linstor-server#531. linstor-csi starts every volume delete by setting `BalanceResourcesEnabled` on the resource definition. With the Kubernetes CRD backend that write can come back as 409 AlreadyExists when the fabric8 client retries a POST the apiserver already persisted. A single-object transaction has no rollback entry, so the controller drops the key from memory while the CR stays, and the caching client never re-reads it. Every retry of the delete then fails the same way. The patch makes create treat a 409 as success when the object exists: it takes the live resourceVersion and replaces the object with the intended content. The unit test that comes with the patch was red before the fix and green after, on v1.33.3 and on upstream master, and the whole patch series still applies to v1.33.3. The retry being the trigger is my best explanation, not proven: the run had no apiserver logs. Until this ships, restarting linstor-controller clears the state. Closes #4531 ### Screenshots ### Downstream repositories - [x] No downstream repository is affected by this change - [ ] [cozystack/website](https://github.com/cozystack/website) - follow-up: - [ ] [cozystack/terraform-provider-cozystack](https://github.com/cozystack/terraform-provider-cozystack) - follow-up: - [ ] [cozystack/ansible-cozystack](https://github.com/cozystack/ansible-cozystack) - follow-up: - [ ] [cozystack/ccp](https://github.com/cozystack/ccp) - follow-up: - [ ] [cozystack/talm](https://github.com/cozystack/talm) - follow-up: - [ ] [cozystack/cozyhr](https://github.com/cozystack/cozyhr) - follow-up: - [ ] [cozystack/cozy-proxy](https://github.com/cozystack/cozy-proxy) - follow-up: - [ ] [cozystack/cozystack-telemetry-server](https://github.com/cozystack/cozystack-telemetry-server) - follow-up: - [ ] [cozystack/external-apps-example](https://github.com/cozystack/external-apps-example) - follow-up: - [ ] [cozystack/examples](https://github.com/cozystack/examples) - follow-up: - [ ] [cozystack/community](https://github.com/cozystack/community) - follow-up: ### Release note ```release-note fix(linstor): the LINSTOR controller no longer gets stuck refusing writes to a property after a retried Kubernetes API request, which could leave a deleted volume in Released with its storage still allocated. ``` <!-- This is an auto-generated comment: release notes by coderabbit.ai --> ## Summary by CodeRabbit * **Bug Fixes** * Improved recovery when Kubernetes reports that an object already exists during creation. The system now adopts the existing object and continues updating it, helping prevent volume operations from becoming stuck and requiring a controller restart. * Other conflict and error cases continue to report their original errors. <!-- end of auto-generated comment: release notes by coderabbit.ai -->
Cozystack
Cozystack is a free and open-source platform and framework for building clouds.
Cozystack is a CNCF Sandbox project that was originally built and sponsored by Ænix.
With Cozystack, you can transform a bunch of servers into an intelligent system with a simple REST API for spawning Kubernetes clusters, Database-as-a-Service, virtual machines, load balancers, HTTP caching services, and other services with ease.
Use Cozystack to build your own cloud or provide a cost-effective development environment.
Use-Cases
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Using Cozystack to build a public cloud
You can use Cozystack as a backend for a public cloud -
Using Cozystack to build a private cloud
You can use Cozystack as a platform to build a private cloud powered by Infrastructure-as-Code approach -
Using Cozystack as a Kubernetes distribution
You can use Cozystack as a Kubernetes distribution for Bare Metal
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