when chunkSizeMiB is greater than or equal to 2048, samller than or equal to 4096,REGISTRY_STORAGE_S3_CHUNKSIZE is set to a negative number, then image registry pod go to panic.
When chunkSizeMiB is greater than 4096 and less than 5120, the vaule of REGISTRY_STORAGE_S3_CHUNKSIZE is set to smaller than the actual value.

    https://github.com/openshift/cluster-image-registry-operator/pull/1026

    always

    1.Enable TP for chunkSizeMiB
    2.set spec.storage.s3.chunkSizeMiB to 2048 in config.image/cluster CRD
% oc get config.image/cluster -o jsonpath='{..storage}' | jq -r
{
  "managementState": "Managed",
  "s3": {
    "bucket": "wxjchk29a-zl98h-image-registry-us-east-2-hwokxugmyyfwuhqijvyeb",
    "chunkSizeMiB": 2048,
    "encrypt": true,
    "region": "us-east-2",
    "trustedCA": {
      "name": ""
    },
    "virtualHostedStyle": false
  }
}
{
  "managementState": "Managed",
  "s3": {
    "bucket": "wxjchk29a-zl98h-image-registry-us-east-2-hwokxugmyyfwuhqijvyeb",
    "chunkSizeMiB": 2048,
    "encrypt": true,
    "region": "us-east-2",
    "trustedCA": {
      "name": ""
    },
    "virtualHostedStyle": false
  }
}    
    3.Check the env of deploy/image-regsitry under openshift-image-registry namespace 
    
%oc set env deploy/image-registry --list
# deployments/image-registry, container registry
REGISTRY_STORAGE_S3_CHUNKSIZE=-2147483648
===snip===
%oc get pods -l docker-registry=default -n openshift-image-registry
NAME                              READY   STATUS             RESTARTS      AGE
image-registry-6454445c59-n85v9   0/1     CrashLoopBackOff   4 (15s ago)   107s
image-registry-6454445c59-vvdvc   0/1     CrashLoopBackOff   3 (35s ago)   107s
image-registry-67dff68c48-2qs7l   1/1     Running            0             24m

% oc logs -f image-registry-6454445c59-n85v9time="2024-05-29T06:52:24.874994977Z" level=info msg="start registry" distribution_version=v3.0.0+unknown go.version="go1.21.9 (Red Hat 1.21.9-1.el9_4) X:strictfipsruntime" openshift_version=v3.11.0+4462ddc-389-dirtytime="2024-05-29T06:52:24.875226956Z" level=info msg="caching project quota objects with TTL 1m0s" go.version="go1.21.9 (Red Hat 1.21.9-1.el9_4) X:strictfipsruntime"panic: the chunksize -2147483648 parameter should be a number between 5242880 and 5368709120 (inclusive)
goroutine 1 [running]:github.com/distribution/distribution/v3/registry/handlers.NewApp({0x2891e68?, 0x3ac54c0?}, 0xc000639800)	/go/src/github.com/openshift/image-registry/vendor/github.com/distribution/distribution/v3/registry/handlers/app.go:130 +0x2a65github.com/openshift/image-registry/pkg/dockerregistry/server/supermiddleware.NewApp({0x2891e68, 0x3ac54c0}, 0x0?, {0x2893c30?, 0xc0005d54d0})	/go/src/github.com/openshift/image-registry/pkg/dockerregistry/server/supermiddleware/app.go:96 +0xb3github.com/openshift/image-registry/pkg/dockerregistry/server.NewApp({0x2891e68?, 0x3ac54c0}, {0x287a150?, 0xc000587a00}, 0xc000639800, 0xc00058a0a0, {0x0?, 0x0})	/go/src/github.com/openshift/image-registry/pkg/dockerregistry/server/app.go:138 +0x467github.com/openshift/image-registry/pkg/cmd/dockerregistry.NewServer({0x2891e68, 0x3ac54c0}, 0xc000639800, 0xc00058a0a0)	/go/src/github.com/openshift/image-registry/pkg/cmd/dockerregistry/dockerregistry.go:212 +0x368github.com/openshift/image-registry/pkg/cmd/dockerregistry.Execute({0x286fbc0, 0xc000587880})	/go/src/github.com/openshift/image-registry/pkg/cmd/dockerregistry/dockerregistry.go:166 +0x832main.main()	/go/src/github.com/openshift/image-registry/cmd/dockerregistry/main.go:93 +0x48b

4. set spec.storage.s3.chunkSizeMiB to 4096 in config.image/cluster CRD
% oc set env deploy/image-registry --list
# deployments/image-registry, container registry
REGISTRY_STORAGE_S3_CHUNKSIZE=0

5. set spec.storage.s3.chunkSizeMiB to 5000 in config.image/cluster CRD
% oc set env deploy/image-registry --list
# deployments/image-registry, container registry
REGISTRY_STORAGE_S3_CHUNKSIZE=947912704

REGISTRY_STORAGE_S3_CHUNKSIZE is not set correct.    

    When chunkSizeMiB is greater than or equal to 5, less than or equal to 5120, the REGISTRY_STORAGE_S3_CHUNKSIZE should be set to chunkSizeMiB * 1024 * 1024

    When chunkSizeMiB is greater than or equal to 5, less than 2048, REGISTRY_STORAGE_S3_CHUNKSIZE set to chunkSizeMiB * 1024 * 1024, correct.