mirror of
https://github.com/rustfs/rustfs.git
synced 2026-09-08 04:58:12 +00:00
46a387dffe
A replication target that mints its own version ids (Wasabi, AWS S3) never answers to the source uuid, so every version-addressed mutation after the initial PUT failed forever: permanent version deletes answered NoSuchVersion every heal cycle, and tag / retention / legal-hold updates re-PUT the object, minting one more target version per update (rustfs/backlog#2340). Record the id the target assigned as a per-target ledger on the source version (replication-target-version-<arn>, written through the existing status writeback) and resolve every later mutation through it: version deletes DELETE the ledger id, metadata updates go through the metadata-only Object Lock and tagging APIs. Replicas written before the ledger existed are located by exact key and ETag, minus the candidates other generations of the key already claim through their own ledgers; an ambiguous remainder is refused with a backoff instead of guessed, since a wrong pick would destroy a live generation. A fresh write never consults content identity. NoSuchVersion on a version-addressed DELETE counts as purged. The fake target gains the Wasabi shape (404 NoSuchVersion on an unknown id, per-version Object Lock APIs) and the matrix covers the three mutation classes plus the same-bytes generation case.