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docs: record R6 integration verification

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(cherry picked from commit d38edb2c46182d3a8fa96e040604493d20a4b478)
Signed-off-by: Feng Ruohang <rh@vonng.com>
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Feng Ruohang
2026-09-16 00:31:26 +08:00
parent 0c61128d23
commit aea3882c95
12 changed files with 942 additions and 5 deletions
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docs/investigations/r6/verification-notes.md
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@@ -26,7 +26,7 @@ The multi-target fixture checks one target complete while the other fails/offlin
## Environment failures and fixes to test inputs
- The host reports a high used-space percentage. Six unrelated broad DELETE tests abort at seed PutObject with `Storage reached its minimum free drive threshold`: TestDeleteObjectConditional, TestDeleteObjectConditionalWithReadQuorumFailure, TestDeleteObjectConditionalVersioned, TestDeleteObjectsVersioned, TestDeleteObject, TestDeleteObjectVersionMarker. See replication-suite.log. That exploratory broad suite was not a pass. No unrelated production capacity policy or those tests were changed.
- During the exploratory broad run, the host reported a high used-space percentage. Six unrelated DELETE tests aborted at seed PutObject with `Storage reached its minimum free drive threshold`: TestDeleteObjectConditional, TestDeleteObjectConditionalWithReadQuorumFailure, TestDeleteObjectConditionalVersioned, TestDeleteObjectsVersioned, TestDeleteObject, TestDeleteObjectVersionMarker. See replication-suite.log. That exploratory broad suite was not a pass. After host free space recovered, all six exact tests passed on the final integrated source, without changing those tests or production capacity policy; see verification/rebased-delete-verification.json and rebased-delete-recheck.log. This recheck is not a full cmd-suite run.
- R6 storage fixtures reuse the repository's tagTestCapacityDisk adapter: Total/Used are adapted to the actual free space; object/MRF metadata and data still go to real disks. This isolates host occupancy from replication semantics.
- A test link later failed with `no space left on device` (head-exits.log). Thirteen old Go cache artifacts containing this exact worktree path, totaling 1495 MiB, were removed after identification. No repository data or other tasks' cache entries were selected. The manifest is owned-cache-cleanup.json in the raw evidence directory. Available space also changed due to unrelated host activity; we do not attribute the whole increase to this cleanup.
- The HEAD quorum test initially used HTTP 503 and expected a quorum-code fall-through. Existing ErrorRespToObjectError classifies 503 as backend-down before its S3 code conversion. Final tests separately cover 503 not-ready failure and a non-503 SlowDownRead code reaching the existing quorum branch. No production change to that classification was made.