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Evan JarrettandClaude Opus 5
2580dcdb0f
io.atcr.manifest rkeys are the digest alone (digestToRKey), so a single
record backs every repository of a user holding identical content. Both
paths that cascade-delete that record checked for remaining tags scoped to
one repository, which asks the wrong question: a tag in another repo keeps
the shared record alive just as much as a tag in this one.
With me/a:v1 and me/b:v1 at the same digest, deleting me/a:v1 saw no
remaining tags in repo a, deleted the shared PDS record, and purged the
layers on the hold. me/b:v1 was left pointing at content that no longer
exists, and the firehose delete handler then cleared the rows for every
repo (DeleteManifest with an empty repository argument).
The collision predates this, but it was reachable only behind the opt-in
AutoRemoveUntagged profile flag. 1b91768 enabled OCI manifest DELETE and
made TagStore.Untag cascade unconditionally, which turned a latent metadata
collision into blob-level data loss on an ordinary skopeo/crane delete.
- cleanupUntaggedManifest no longer filters candidate tags to
rctx.Repository. The surrounding comment already noted that the tag
collection is account-wide; the filter contradicted it.
- ShouldCascadeDeleteManifest takes the tag question DID-wide via a new
IsManifestTaggedAnyRepo, and drops its now-meaningless repository
parameter.
- IsManifestTagged stays repository-scoped and keeps its caller: the
delete-manifest confirmation prompt is genuinely asking about the one
repo whose tags the user is about to remove.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>