[Bug-Fix] Fix S3 multipart copy requiring s3:GetObjectVersion on versioned buckets#3867
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sbiscigl
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Jul 15, 2026
| // Detect source mutation via ETag conditional without requiring s3:GetObjectVersion. | ||
| // If the user explicitly provided sourceVersionId, it is already parsed above and preserved. | ||
| if (sourceVersionId.empty() && !head.GetVersionId().empty()) { | ||
| sourceVersionId = head.GetVersionId(); |
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you should remove this entire if statement. we want to honor the versionId set in the request, however not override it by the head response if it present.
sbiscigl
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Stop auto-pinning the HeadObject-derived versionId onto UploadPartCopy requests in S3CrtClient::PopulateCopyObjectProperties. Rely on the ETag conditional (x-amz-copy-source-if-match) for source consistency instead. GetObjectAnnotation and GetObjectTagging continue to use versionId since they don't support ETag conditionals.
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Issue #, if available:
Description of changes:
Stop auto-pinning the HeadObject-derived versionId onto UploadPartCopy
requests in S3CrtClient::PopulateCopyObjectProperties. Rely on the ETag
conditional (x-amz-copy-source-if-match) for source consistency instead.
GetObjectAnnotation and GetObjectTagging continue to use versionId since
they don't support ETag conditionals.
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