mirror of
https://github.com/seaweedfs/seaweedfs.git
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137d29633b2b5d62da7fa63b0da7b43caff08822
248
Commits
| Author | SHA1 | Message | Date | |
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df33e81915 |
volume: report the needle read error with a failed read (#11934)
* volume: report the needle read error with a failed read A read that fails on the volume server, for example on a CRC mismatch, returned a bare 500, so mount and filer logs only showed the status. The volume server now writes the error into the response body, and the read helpers add it to the error they return. Co-authored-by: Bruce <82158894+half-life666@users.noreply.github.com> * volume: keep the 500 bare on HEAD requests writeJsonError's body write fails with ErrBodyNotAllowed under net/http when the request method is HEAD, adding an error-writing log line on top of the failed read. Send only the status, matching the no-error path. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * util/http: decode gzip-encoded error bodies in statusError Full-chunk reads set Accept-Encoding: gzip themselves, so the transport does not transparently decompress; a gzip-encoded error body reached statusError as compressed bytes and produced an unreadable message. statusError now takes the response and decodes Content-Encoding before extracting the bounded message. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * volume: log the read error when the 500 stays bare On HEAD requests the body write is skipped, which also skipped the V(0) response log inside writeJson — a failed HEAD read left no cause in normal volume-server logs. Log the error in the same format before the bare 500. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * util/http: check the status before decoding gzip in GetAuthenticated The gzip reader eagerly consumes the header when it is created, so statusError saw a drained or corrupt body on a gzipped error response and the server message was lost. Match the other read helpers and check the status first. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * util/http: export StatusError Other volume read paths outside this file need the same error body. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * volume: redact jwt query param when logging failed-read URLs The new read-failure logs print the request URL, and volume reads accept ?jwt= as a credential, so a failed authenticated read would write the bearer token to the volume server log. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * util/http: surface the error body on the remaining chunk-read paths * volume: redact duplicate jwt params in failed-read logs * operation: pass the lookup jwt on the chunk needle read --------- Co-authored-by: Bruce <82158894+half-life666@users.noreply.github.com> Co-authored-by: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> Co-authored-by: Chris Lu <chrislusf@users.noreply.github.com> |
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Javier de la TorreandJavier de la Torre
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de2fc03c7d |
s3tables: accept the external-volume verification object at a table bucket's root (#11900)
* s3tables: accept the external-volume verification object at a table bucket's root Snowflake verifies an S3-compatible external volume before it creates or writes Iceberg tables in it (SYSTEM$VERIFY_EXTERNAL_VOLUME, also run implicitly): it writes, reads, lists and deletes one small object, <base>/verify_<epoch milliseconds>_<number>, a 21-byte body. A table bucket refuses every key outside the Iceberg layout, so the check failed and Snowflake could not use a table bucket as an external volume. PUT, GET, HEAD, DELETE and DeleteObjects now accept exactly that key in a table bucket, narrowly enough that it cannot be used to store data: - at the bucket root only, so nothing is encoded in a prefix, written into a hidden tree or placed on a namespace or table name; - one shape: verify_<13 digits of epoch ms within one hour of the server's clock>_<1-10 digits>; - a PUT must declare a Content-Length of at most 1 KiB (no chunked or undeclared body) and carry no user metadata, tagging, Content-Disposition, Cache-Control, Expires or website redirect. Multipart, copy, rename, ACL, tagging and POST policy writes keep the plain layout rule. Buckets that are not table buckets are unaffected. Tests: table_bucket_verify_object_test.go, the key accepted (with the Iceberg layout as the positive control and the plain rule still refusing it), 15 look-alikes refused (prefixed, hidden tree, wrong shape, outside the window, ordinary keys), and seven PUT refusals through PutObjectHandler. * s3tables: keep the verification key off namespaces and narrow its PUT A namespace may be named like a verification key (verify_<ms>_<n>), and the key then names the namespace's directory. A PUT replaced that directory with a prefix object, dropping the namespace's catalog metadata; a DELETE removed an empty namespace. The key now gets the plain layout rule when it names a directory or its entry cannot be read, and a PUT of it never falls back to a prefix object, so a namespace created after the check is not replaced either. The time window applies to PUT only: GET, HEAD and DELETE take a key of any date, so an object a check left behind for more than an hour can still be read and removed. A verification PUT also refuses an extraction request and the stored Content-Language, Response-Content-Disposition and Content-Encoding headers (aws-chunked framing alone is still accepted). The integration test runs the check's PUT, HEAD, GET, list and DELETE against a table bucket, and the PUT and DELETE over a namespace of the key's shape. --------- Co-authored-by: Javier de la Torre <jatorre@lakehousebox.com> |
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Jay HemnaniandChris Lu
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a3e97ec709 |
s3: apply Range to HeadObject (#11856)
* s3: apply Range to HeadObject * s3: apply Range to a HEAD of a stored directory key Directory-key entries answer through serveDirectoryContent before HeadObjectHandler's range branch, so a ranged HEAD returned 200 and the full length. * s3: keep the missing-directory check for plain directories only A stored directory-key marker is an object, so a range on its empty body answers 416 like on any other zero-byte object. * s3: let partNumber keep its priority over Range on a directory key HEAD * s3: serve ranged GETs of a stored directory key The same branch now applies the validated range to the inline content on GET, so a directory-key object answers 206 with the selected bytes like any other object. --------- Co-authored-by: Chris Lu <chrislusf@users.noreply.github.com> |
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Chris LuandDevin
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0de6347b11 |
s3: mask anonymous misses behind AccessDenied unless the bucket is listable (#11857)
* s3: mask anonymous misses behind AccessDenied unless the bucket is listable Deferred anonymous GET/HEAD authorization only runs once an entry is selected, so misses returned 404 while existing keys returned 403 — an unauthenticated existence oracle for bucket names and object keys. Route not-found responses in Get/HeadObjectHandler through a check that only discloses 404 when anonymous listing is allowed (policy, identity or a public-read bucket); otherwise the miss is indistinguishable from a denied read, matching AWS and 4.48 behavior. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * s3: mask missing-directory misses for anonymous reads too Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * s3: check a fixed request shape when masking anonymous misses The miss check passed the caller's request through, so query parameters could retarget the resolved action (?policy) or satisfy an s3:prefix condition on an unrelated subtree. Each check now runs on a request with a fixed shape: a ListBucket scoped to the probed key and a plain read of the key, so the miss only shows when the caller could learn the same fact directly. * s3: mask conditional-header misses for anonymous reads An If-Match conditional on a missing key wrote NoSuchKey directly from processConditionalHeaders, before the handlers reached the masked miss path, so anonymous callers could still distinguish a missing key from a denied read. * s3: keep the versionId when masking anonymous misses The read leg must evaluate the action the caller's request resolves to: a versioned miss is s3:GetObjectVersion, and dropping versionId would let a plain GetObject grant disclose versions the caller may not read. --------- Co-authored-by: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> |
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Jay Hemnani
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4e5fed9e9e | s3: list the size of a directory marker that has a body (#11830) | ||
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Nabil RagabandClaude Opus 5.5
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6ab6926c94 |
s3: read chunks from HTTPS volume servers with the global HTTP client (#11800)
readChunkRange sent the volume lookup's http:// URL through a bare http.Client, so with [https.client]/[https.volume] configured every read of an SSE-KMS object larger than one chunk (and every ranged read through this path) failed with "client sent an HTTP request to an HTTPS server" and the GET returned 500. Normalise the URL's scheme and use util_http's global client, which carries the [https.client] TLS configuration, as the other volume reads already do. Drop the now-unused volumeServerHTTPClient. Fixes #11799 Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com> |
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Chris Lu
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a4c8d31cb8 |
s3api: ignore response header overrides on anonymous requests
AWS requires response-* query parameters to be signed; an anonymous caller must not choose how a stored object is served. |
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d050464316 |
s3api: apply bucket default encryption when volume data encryption is enabled (#11681)
* s3api: apply bucket default encryption when volume data encryption is enabled When -s3.encryptVolumeData (s3a.cipher) is enabled, putToFiler skipped checking and applying bucket default encryption due to a '!s3a.cipher' guard. Volume-level data encryption and object-level Server-Side Encryption (SSE-S3 / SSE-KMS) operate at different layers, and explicit SSE headers already work alongside volume encryption. Remove the '!s3a.cipher' guard so PutObject without explicit SSE headers inherits bucket default encryption regardless of volume data encryption. Add regression test TestPutObjectAppliesBucketDefaultEncryptionWithVolumeCipher. Signed-off-by: Tyagiquamar <mohdquamartyagi@gmail.com> * s3api: decrypt the volume cipher on direct SSE chunk reads fetchFullChunk, fetchChunkViewData, and createEncryptedChunkReader fetched raw bytes over HTTP, so volume-encrypted chunks reached SSE-S3/KMS/C decryptors still ciphered. Route them through fetchChunkData: encrypted or compressed chunks go through RetriedFetchChunkData (cipher-aware, slices plaintext space for views); plain chunks keep the streaming range read. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * s3api: cover cipher-aware chunk reads with a fake volume server The fake volume now serves stored GETs with Range support, and TestFetchChunkDataDecryptsVolumeCipher verifies full-chunk and view reads return plaintext for ciphered chunks while plain chunks still slice via HTTP ranges. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * s3api: guard fake volume server stored map with its mutex The HTTP handler goroutine read v.stored while test goroutines wrote it, a data race go test -race can flag. Lock v.mu around the map read and the test writes. --------- Signed-off-by: Tyagiquamar <mohdquamartyagi@gmail.com> Co-authored-by: Chris Lu <chrislusf@users.noreply.github.com> Co-authored-by: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> Co-authored-by: Chris Lu <chris.lu@gmail.com> |
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b2eefb8a73 |
filer: fail the request, not the process, when chunks cannot be resolved (#11685)
* filer: fail the request, not the process, when chunks cannot be resolved CompactFileChunks and ViewFromChunks discarded the error from NonOverlappingVisibleIntervals and iterated the nil interval list it returns on failure. A CreateEntry or UpdateEntry whose context was cancelled therefore panicked in SeparateGarbageChunks and took the whole filer down, losing the metadata log it had not yet flushed. Both functions now return the error. cleanupChunks fails the request with it, the mount flush paths return it, the replication sinks and the S3 SSE range reader return it, and a ChunkStreamReader that cannot build its view fails every read with it and reports it as its SourceError instead of reading as an empty file. Fixes #11682 Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> * filer: propagate chunk resolution failures in scan paths NonOverlappingVisibleIntervals can fail without a cancelled context; the query engine and log-store callers discarded the error and dereferenced nil intervals. * query: propagate chunk resolution errors instead of skipping files When a manifest cannot be resolved, ReadParquetStatistics, countLiveLogRowsExcludingParquetSources, and computeLiveLogMinMax logged a warning and skipped the failed file, so queries returned understated counts and wrong min/max values. Surface the errors instead: the fast-path aggregation collector now returns a DataSourceError so the engine falls back to a full scan, and the row-count helpers return the error rather than a partial total. --------- Co-authored-by: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Co-authored-by: Chris Lu <chrislusf@users.noreply.github.com> Co-authored-by: Chris Lu <chris.lu@gmail.com> |
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Peter Dodd
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5f1a742726 |
fix: return NoSuchKey and drop stale entries when a remote-mounted object is gone from the remote (#11680)
A remote-only entry whose object was deleted from the remote storage outside the filer answered GET with 500 and stayed in the filer. The remote's not-found was lost on the way: the backends' ReadFile returned it as an untyped error, so FetchAndWriteNeedle failed with codes.Unknown and nothing downstream could tell it from any other failure. - remote_storage: GCS, S3 (NoSuchKey) and Azure (BlobNotFound) reads return ErrRemoteObjectNotFound. GCS reports a missing bucket the same way as a missing object, so it confirms the bucket with a listing. - volume server and filer: the not-found crosses gRPC as codes.NotFound carrying the sentinel's text, and the filer's cache RPC returns codes.NotFound, which the S3 gateway already maps to NoSuchKey. - s3api: the origin fallback answers NoSuchKey on a confirmed not-found. - filer: a confirmed not-found removes the stale entry, so the lazy remote-metadata cache converges on the remote. Only remote-only files outside .versions and without an active object lock are removed, only if unchanged since the fetch (checked on the object's write owner, under the lock S3 object writes take), and with a metadata-only delete: the filer skips its inline remote delete, and the delete events' entries carry a marker that makes filer.remote.sync and filer.remote.gateway skip their remote delete, while filer.sync still replicates it. The replicated DeleteEntryRequest carries keep_remote_object, so the destination's delete events are marked too. The store drops the marker from every write, so clients cannot plant it. |
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838c554e33 |
s3api: reject SSE headers PutObject cannot honor, as CopyObject does (#11642)
* s3api: reject SSE headers PutObject cannot honor, as CopyObject does PutObject and CreateMultipartUpload did not check the server-side encryption headers they were given. An x-amz-server-side-encryption value that names no method, such as "aes:kms", matched none of the SSE paths, so the object was stored unencrypted and the request answered 200. SSE-C together with x-amz-server-side-encryption was also accepted, and one of the two silently won. CopyObject already rejects both through validateEncryptionCompatibility. Run the same check, with the same error codes, before PutObject and CreateMultipartUpload store anything. * s3api: answer rejected SSE headers with InvalidArgument, as S3 does S3 rejects an unknown x-amz-server-side-encryption value and SSE-C combined with another method with InvalidArgument. PutObject and CreateMultipartUpload now return that code, with S3's messages, through two new error codes; CopyObject keeps its own. Also run ceph/s3-tests' test_put_obj_enc_conflict_c_s3, _c_kms and _bad_enc_kms in CI, which check both handlers' responses end to end. * s3api: close the remaining ways a PUT could skip requested encryption - A repeated x-amz-server-side-encryption header is rejected: the encryption paths apply only the first value, so extra values could hide the method the client asked for. - KMS options (key id, encryption context, bucket key) are rejected unless the method is aws:kms, matching the S3 InvalidArgument error. - CreateMultipartUpload validates before auto-create, so a refused upload cannot leave a bucket behind. - Directory markers encrypt their inline content through the shared SSE path and record the same entry metadata as regular objects, instead of storing requested-encrypted bytes in plaintext. * s3api: read back what the SSE marker write stores - Repeated SSE-C and KMS option headers are rejected alongside a repeated x-amz-server-side-encryption, closing the same first-value bypass for customer-key and KMS fields. - Algorithm validity is checked before KMS options so an unsupported value keeps the "not supported" error. - serveDirectoryContent decrypts marker content with the stored SSE metadata and returns the SSE headers, so an encrypted marker reads back what was written; its Content-Length now reflects the bytes actually served. * s3api: HEAD of a marker skips decryption and keeps the stored size HEAD returns no body, so it now runs only the SSE-C key check instead of decrypting — matching HeadObjectHandler and avoiding a KMS round-trip — and chunk-backed directory entries report Attributes.FileSize again rather than the length of their (empty) inline content. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * s3api: keep GET Content-Length to the bytes serveDirectoryContent writes The FileSize override described chunk-backed markers on HEAD, but GET sends only the inline content, so it promised bytes it never wrote. * s3api: stream a chunk-backed directory on GET like any object A directory promoted over an uploaded object keeps the object chunks with empty inline content, so serving only entry.Content made GET deliver nothing while HEAD reported FileSize. GET now routes those entries through the regular volume-server stream, keeping the two methods consistent. * s3api: answer a busy volume read with RequestBytesExceed --------- Co-authored-by: Chris Lu <chris.lu@gmail.com> Co-authored-by: Chris Lu <chrislusf@users.noreply.github.com> Co-authored-by: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> |
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Chris LuandDevin
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56fbc3deb5 |
s3api: align S3/IAM error responses with AWS (#11632)
* s3err: add InvalidArgument and AuthorizationHeaderMalformed codes Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * s3api: answer unrecognized bucket PUT sub-resources with 501 A PUT on a bucket carrying an unrecognized query (logging, metrics, intelligent-tiering, ...) fell through to the bare CreateBucket route and returned BucketAlreadyOwnedByYou or re-created the bucket. AWS answers these with NotImplemented. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * s3api: reject malformed copy-source and multipart PUT parameters A malformed X-Amz-Copy-Source or a non-numeric partNumber fell through to the plain PutObject route and stored the body as a regular object. Answer them with InvalidArgument-class errors instead of writing data. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * s3api: verify x-amz-content-sha256 against the streamed body A PUT carrying a hex or base64 payload hash now streams through a verifier that reports a mismatch once the stream is exhausted, instead of storing an object that does not match its declared hash. The error is deferred so intermediate reads that drop (n>0, err) results cannot silently swallow it. Sentinel values (unsigned/streaming payloads) remain exempt and malformed values fail fast. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * s3api: map truncated SigV4 headers to the error for the missing field AWS answers an Authorization header missing Credential= with InvalidArgument and one missing or malformed Signature= with AuthorizationHeaderMalformed, instead of a generic MissingFields. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * s3api: answer IAM/STS failures in the query-protocol envelope Embedded IAM and STS routes now report authentication, form-parse and authorization failures with the IAM ErrorResponse body instead of the S3 Error envelope, so IAM SDK clients can parse them. Requests signed for s3 keep the S3 envelope, keyed off the credential scope. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * s3api: return 403 AccessDenied when the request has no Date Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * s3api: answer throttling rejections as SlowDown ErrTooManyRequest and ErrRequestBytesExceed reported made-up codes; AWS serves these throttling rejections as SlowDown. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * s3api: reject versionId requests on buckets that never had versioning GET, HEAD and DELETE carrying a non-empty versionId on an unversioned bucket now fail with InvalidArgument instead of being answered as a plain object request. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * s3api: answer DeleteObjects over 1000 keys with MalformedXML Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * s3api: InvalidArgument for non-numeric or out-of-range part numbers partNumber=abc, 0 and >10000 all resolve to InvalidArgument, matching AWS, instead of InvalidPart. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * iam: correct LimitExceeded, InvalidAction and ServiceFailure mappings LimitExceeded is a conflict (409), an unknown Action is InvalidAction (404) rather than NotImplemented, and internal failures report the IAM receiver fault type. Applies to both the embedded IAM endpoint and the standalone iamapi server. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * iam: refuse DeleteUser while access keys remain Deleting a user with live credentials orphaned its access keys; AWS answers DeleteConflict until they are removed first. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * test/s3: add S3/IAM error-response compatibility harness * s3: return InvalidArgument for malformed x-amz-content-sha256 A header value that decodes to neither 32-byte hex nor base64 is a malformed argument, not a hash mismatch. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * test: stop spawned mini when readiness times out A slow-starting server otherwise survives the failure path and keeps the S3 port occupied for the next run. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * test: register atexit cleanup before setup A failed setup previously skipped cleanup, leaking the bucket and IAM user on persistent servers. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * s3api: reject unrouted subresources on the DELETE bucket catch-all PutBucketHandler gained the same guard when the route-level check moved into the handlers; DeleteBucketHandler was missed, so an authorized DELETE /bucket?logging could delete the bucket instead of answering NotImplemented. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * test: tolerate unset fixture variables in cleanup and cover DELETE ?logging Cleanup now runs its IAM/multipart steps only when setup reached them, so an early setup failure still removes the bucket. Added a DELETE bucket-subresource case asserting NotImplemented and bucket survival. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * test: fail a case when its side-effect check reports a regression A non-empty check note now fails the case, so a deleted bucket or an object created by a malformed request cannot slip through behind a passing status check. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> --------- Co-authored-by: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> |
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zhao-ycandChris Lu
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d829275de6 |
fix(s3): recheck cache metadata and validate null objects (#11618)
* fix(s3): recheck cache metadata and read null directory markers Signed-off-by: zhaoyuchen <43179751+zhao-yc@users.noreply.github.com> * fix(s3): preserve null object identity and bound test cache Signed-off-by: zhaoyuchen <43179751+zhao-yc@users.noreply.github.com> * s3: trim comments on the anonymous read cache path Signed-off-by: Chris Lu <chris.lu@gmail.com> --------- Signed-off-by: zhaoyuchen <43179751+zhao-yc@users.noreply.github.com> Signed-off-by: Chris Lu <chris.lu@gmail.com> Co-authored-by: Chris Lu <chris.lu@gmail.com> |
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aa5b337716 |
fix(s3): honor object ACLs for anonymous GET and HEAD (#11605)
* fix(s3): honor object ACLs for anonymous reads Signed-off-by: zhaoyuchen <43179751+zhao-yc@users.noreply.github.com> * s3: drop unsigned session tokens on deferred anonymous reads An unsigned GET/HEAD carrying X-Amz-Security-Token is anonymous, not a session request; strip the token before authentication and authorization so it cannot influence identity or policy evaluation. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> --------- Signed-off-by: zhaoyuchen <43179751+zhao-yc@users.noreply.github.com> Co-authored-by: Chris Lu <chrislusf@users.noreply.github.com> Co-authored-by: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> |
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Chris LuandDevin
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9b3b12c607 |
filer: pin-aware reader cache eviction and stream release (#11503)
* filer: synchronize stream pins and release them on transitions Guard chunkStream.cacher with the ReaderCache lock everywhere: mount sections share one ChunkReadAt across concurrent reads, and unsynchronized release could double-unpin. Reads served from the chunk cache now detach the stream's pin instead of retaining the previous chunk. Eviction prefers unpinned downloaders so a pinned buffer is not dropped mid-stream. A new ReleaseStream lets callers drop their pin without destroying the shared cache; S3 and WebDAV readers use it. lastChunkFid becomes atomic since concurrent mount reads can update it. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * filer: keep eviction bounded when every downloader is pinned Both eviction paths still fall back to a pinned victim when no unpinned one exists, so abandoned stream pins cannot bypass the downloader limit or stall the memory budget. Budget eviction also rechecks the pin under the ReaderCache lock at removal time: a stream that pinned the selected victim in between keeps it mapped and the selection retries. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * filer: restore budget bookkeeping when a victim gets pinned mid-eviction removeUnpinned losing the pin race left the victim out of the idle list while still holding its reservation, making it unevictable even as the pinned fallback. Push it back when the reservation is still live. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> --------- Co-authored-by: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> |
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Chris Lu
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7129e1178e |
s3: evaluate bucket policy before ACL public-read for anonymous requests (#11471)
* s3: evaluate bucket policy before ACL public-read for anonymous requests AuthWithPublicRead granted anonymous access on a public-read ACL before consulting the bucket policy, so an explicit Deny (e.g. s3:ListBucket) was skipped for anonymous callers while still enforced for authenticated ones. Run the policy engine first: a matching Deny or Allow is honored, otherwise fall through to the ACL grant as before. * s3: defer object-level anonymous requests to the handler's policy recheck Evaluating the bucket policy with a nil entry at middleware time makes tag conditions like s3:ExistingObjectTag/<key> resolve against missing values, so a conditional Deny could wrongly block anonymous Get/Head on a public bucket whose handler recheck would permit it. Object requests now take the ACL grant and let Get/HeadObjectHandler re-evaluate with the fetched entry; only bucket-level requests (List, HeadBucket), which have no such recheck, are decided by the middleware policy verdict. Reading the bucket config first also refreshes the compiled policy on a cache miss, so a remotely deleted policy cannot leave a stale verdict in the engine for nonresident buckets. * s3: recheck bucket policy before serving directory objects handleDirectoryObjectRequest runs before the object handlers' policy recheck, so directory content on a public-read bucket was served to anonymous callers without any policy evaluation. Evaluate the policy with the directory entry, matching the recheck the file path performs. |
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Chris Lu
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26fc90187e |
s3: accept x-amz-checksum-mode from the query string, case-insensitively
Presigned HeadObject/GetObject requests hoist x-amz-checksum-mode into the signed query string, so a strict header-only check would withhold stored checksums on presigned reads that AWS honors. |
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Chris Lu
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8a68337256 |
filer: pack SSE chunks into manifests (#11175)
* filer: pack SSE chunks into manifests * s3: resolve encrypted manifests before reads * s3: scope encrypted manifest resolution to ranges |
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Chris Luanddevin-ai-integration[bot]
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811b8b5734 |
make the remote-mount cache wait configurable per mount (#11168)
* add a per-mount cache_wait_ms to the remote storage mount mapping A read of an uncached remote-only object waits on a hardcoded size tier before it can fall back to the origin, so every ranged read of a large remote-only object pays that wait. Carry the wait in the mount mapping so it can be tuned, or set to zero, per mount. * resolve the cache wait of an uncached remote-only read from its mount The wait came only from the object size, so an operator could not trade cache hits for time to first byte. Both read paths now resolve the mount covering the object and let its cache_wait_ms replace the size tiers. * read straight from the remote when a mount waits zero for its cache A mount used as a streaming source pays the cache wait on every ranged read of an object too large to finish caching, and the caching itself is wasted work. A zero wait now skips the cache call, so both read paths go to the origin immediately. * let remote.mount set the cache wait of a mount remote.mount -cacheWait=0 turns a mount into a streaming source, and any other duration trades cache hits against time to first byte. * keep the size based wait for a version-specific read A read pinned to a version cannot fall back to the origin, since the mounted remote only holds the current key, so a mount that opts out of caching would leave it on the 503 retry loop forever. * let the operator allow a remote-only read to dial an internal endpoint The remote-mount read paths in the filer and the S3 gateway always refused an endpoint resolving to a loopback or private host, so a mount backed by an internal S3 could never be read from its origin, only through the local cache. Both now take the allowance the volume server already has, still off by default. * skip the background cache of a mount that waits zero for its cache GetObjectHandler kicks off caching for every remote-only read, so a mount serving as a streaming source kept downloading whole objects even though no read ever waited for them. * cover a zero cache wait end to end The read has to reach a real origin, so the harness also opts the filer and the S3 gateway into dialing the loopback remote it already allows for the volume server. * resolve the S3 cache wait once so the background cache follows it too The background cache that GetObjectHandler starts read the mount on its own, so it skipped a version-specific read that the foreground path still waits for. Both now ask the same resolver. * answer 404 when the origin of a zero-wait read is gone Metadata can outlive the object it points at, and with no cache to fill the read would sit on the 503 retry path forever. The remote backends already report a missing object as ErrRemoteObjectNotFound. * open the origin at write time for a multipart range Every part of a multipart Range is prepared before any is written, so opening eagerly would hold one origin connection per part and leak the ones already opened when a later part fails to open. * reject a cache wait shorter than a millisecond The mapping stores milliseconds, so -cacheWait=500us truncated to zero and silently turned caching off instead of waiting. * restore the doc comment of cacheRemoteObjectForStreamingWithShortTimeout Extracting the wait resolver left its comment on the new function. * stat the origin before committing a multipart range Opening at write time keeps no connection through the preparation, but it also moved a failure past the point where the multipart body picks the response status, so a gone origin truncated a 206 instead of answering 404. One stat up front puts the status back. * stat the origin once per request Every part of a multipart Range is prepared on its own, so the preflight ran once per range instead of once per read. * map Azure and GCS stream not-found to ErrRemoteObjectNotFound ReadFileAsStream on Azure and GCS returned provider-specific not-found errors instead of ErrRemoteObjectNotFound, so a zero-wait read of a deleted object was misclassified as a transient cache failure and retried indefinitely. Map BlobNotFound and ErrObjectNotExist the same way StatFile already does. * Update weed/remote_storage/gcs/gcs_storage_client.go Co-authored-by: devin-ai-integration[bot] <158243242+devin-ai-integration[bot]@users.noreply.github.com> --------- Co-authored-by: devin-ai-integration[bot] <158243242+devin-ai-integration[bot]@users.noreply.github.com> |
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Chris Lu
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5a515adab2 |
s3: HeadObject with partNumber returns the part's size and 206 (#11166)
* s3: HEAD with partNumber reports the part's size and range HeadObject set its headers from the total object size and then only validated the partNumber, so a client probing part 1 with HEAD got the whole object's Content-Length and a 200 while the same GET returned the part's size, a Content-Range and a 206. Resolve the part's byte range before the headers are written, through the range logic GetObject already used, and answer a partNumber HEAD as the ranged HEAD that AWS documents. * s3: answer an unsatisfiable partNumber with 416 InvalidPartNumber GET and HEAD rejected a partNumber past the number of parts with 400 InvalidPart, the code for a missing part in CompleteMultipartUpload. AWS answers a read of a part that does not exist with 416 InvalidPartNumber, which lets a client probing for the part count tell the two apart. The ceph suite pins RGW's 400 InvalidPart here, so the s3tests jobs patch that expectation the way they already patch prefix ordering. * s3: keep the whole-object checksum off a partNumber response The stored checksum covers the whole object, so it is already withheld from a ranged read. A partNumber HEAD now describes one part while the request carries no Range header, so exclude it there too rather than handing a client a checksum that does not match the bytes described. * s3: resolve a partNumber against the parts the object records Completion accepts ascending, not consecutive, part numbers, so the part count is not the highest part number. Comparing the two rejected an uploaded part 3 of a two-part object, and let a request for the absent part 2 fall through to the positional chunk lookup and serve part 3's bytes. Ask the recorded boundaries for the part instead, and keep the count comparison for objects written before boundaries were stored. * s3: apply a client Range within the part on HEAD too GET narrowed the part by a Range sent alongside partNumber; HEAD reported the whole part, so the two disagreed again for a request that carries both. Move the narrowing into the shared range lookup so either verb describes the same bytes. |
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Chris Luandbruce-zzz
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0f05957bc4 |
filer: self-heal chunk manifest reads when volume locations go stale (#11107)
* filer: self-heal fetchWholeChunk on stale volume locations Upstream #10156/#10800 wired cache invalidation into the buffer-based read paths, but manifest resolution still goes through fetchWholeChunk, which returns the raw error on failure. When cached volume locations are stale (volume tiered to remote storage, server rolled), resolving a large multipart file fails permanently even though other locations are healthy. Thread the ChunkGroup's cacheInvalidator through ResolveChunkManifest / ResolveOneChunkManifest / fetchWholeChunk, and on failure invalidate, re-lookup and retry once via the existing retryFetchWithFreshLocations helper. The streaming bytesBuffer is reset before the retry so partial bytes from the failed attempt cannot corrupt the manifest proto.Unmarshal. Non-mount callers pass nil and keep their semantics. * filer: move the manifest self-heal tests in with the other manifest tests Also make the stale server stream a prefix and then abort mid-body, which is what actually leaves partial bytes in the buffer: an HTTP error status returns before ReadUrlAsStream ever calls the writer, so a 500 never exercised the Reset the tests claimed to cover. Claude-Session: https://claude.ai/code/session_01FK3oGC5ZVeJYvNBWgb9JUD * filer: keep the cached volume locations when a manifest read is cancelled A cancelled or timed-out read says nothing about where the volume lives, so dropping the location and going back to the master only costs the next reader a round trip. PrepareStreamContentWithThrottler already guards its self-heal this way. The guard also goes inside retryFetchWithFreshLocations, since the caller can be cancelled between its own check and the invalidation, and that covers the reader cache and prefetch paths too. fetchWholeChunk returns the context error rather than the stream failure it provoked, and ResolveOneChunkManifest wraps with %w so errors.Is still sees it. That matters even where no invalidator is passed: volume.fsck resolves manifests with nil and tells its own abort from a corrupt manifest that way, so the cancellation check sits ahead of the nil-invalidator return. Claude-Session: https://claude.ai/code/session_01FK3oGC5ZVeJYvNBWgb9JUD * filer: self-heal manifest reads on the filer and s3 paths too Every caller that already holds the location cache backing its lookup function can hand it over: the filer's read, copy and deletion paths and the log cache have the MasterClient right there, and s3api has the FilerClient. MinusChunks takes one for the same reason, since the deletion path resolves manifests through it. Only the shell tools and the replication sinks, whose lookup functions cache privately with nothing to invalidate, keep passing nil. Claude-Session: https://claude.ai/code/session_01FK3oGC5ZVeJYvNBWgb9JUD --------- Co-authored-by: bruce-zzz <bruce.zou@hhy-data.com> |
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Chris Lu
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9ea52db219 |
s3: validate the version-id header used as a filer path segment (#11097)
* s3: reject a version-id header that is not a valid path segment
putToFiler stored the client-supplied Seaweed-X-Amz-Version-Id header
verbatim into object metadata. That value is later read back and used
as a filer path component when building the .versions/v_<id> path, so a
value containing "/", "\" or ".." could steer retention/legal-hold
writes and remote-cache reads outside the object's own bucket tree.
Validate the header with isValidVersionID before storing it, the same
check the versioned read paths already apply, and reject the request
otherwise. Server-set version ids ("null" and generated hex) pass.
Claude-Session: https://claude.ai/code/session_011QqNaxZwnpHgMoAZNp3RkY
* s3: validate a stored version-id before using it as a path
The retention and legal-hold sinks build a .versions/v_<id> path from a
version id read back out of object metadata, and the remote-cache path
builder does the same from either the request or the stored id, without
the isValidVersionID check the other version-id consumers apply. Guard
these so a value that is not a valid path segment falls back to the
regular / unversioned path instead of steering the write or read out of
the bucket tree.
Claude-Session: https://claude.ai/code/session_011QqNaxZwnpHgMoAZNp3RkY
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Chris Lu
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0b5fff2ccd |
filer, s3: reuse the volume server's guarded remote-storage client builder (#10990)
* volume: build the guarded remote storage client through a shared helper Fold the endpoint validation, credential check and rebinding-safe dialer that FetchAndWriteNeedle applies before dialing a caller-supplied remote storage endpoint into a single BuildGuardedRemoteStorageClient helper, so other callers that dial the same endpoints can reuse it. No behavior change on this path. Claude-Session: https://claude.ai/code/session_01AiH1FU3rmshSbFFTbJpaZN * filer: build the remote-mount stream client through the guarded helper streamFromRemote serves a cold remote-only entry straight from its mounted origin. Build its client through BuildGuardedRemoteStorageClient so the same endpoint checks the volume server applies cover this read path too. Claude-Session: https://claude.ai/code/session_01AiH1FU3rmshSbFFTbJpaZN * s3: build the remote-mount stream client through the guarded helper openRemoteStream serves a remote-mounted object straight from its origin when the local read cannot. Build its client through the same guarded helper so the endpoint checks apply here as well. Claude-Session: https://claude.ai/code/session_01AiH1FU3rmshSbFFTbJpaZN |
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Chris Lu
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d8a189f07f |
s3: keep a missing object a 404 under If-Match and If-Unmodified-Since (#10985)
* s3: keep a missing object a 404 under If-Match and If-Unmodified-Since GET and HEAD resolved the target before evaluating the conditional headers, and a missing target failed If-Match and If-Unmodified-Since outright, so absence surfaced as 412 PreconditionFailed. AWS reports the missing object instead: 404 for HeadObject, NoSuchKey for GetObject, and 412 only when a live object fails the condition. Clients cannot tell absence from a stale precondition without an extra racy HEAD, so OpenDAL disabled its four conditional stat/read capabilities against SeaweedFS. A precondition now only fails against an object that exists; a missing one -- including a latest version that is a delete marker -- returns NoSuchKey. Claude-Session: https://claude.ai/code/session_01X4kEbuwxd9DFsTnSXjfjgv * s3: evaluate a conditional read against the version the request names GET and HEAD resolved the latest version before evaluating the conditional headers, so a request carrying versionId had its If-Match compared against a different version than the one it was asking for: a live version whose ETag the client held failed once a newer version -- or a delete marker -- became the latest. resolveObjectEntry now resolves the named version on a versioned bucket, the way DELETE already does. A named version that resolves to nothing is left to the handler, which alone knows whether the bucket is versioned and so whether it owes NoSuchVersion. Claude-Session: https://claude.ai/code/session_01X4kEbuwxd9DFsTnSXjfjgv |
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Chris Lu
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3431bdcb74 |
s3: fix UploadPartCopy with volume-data encryption (#10971)
* operation: give an encrypted chunk the plaintext ETag With -encryptVolumeData the volume server stores ciphertext, so it cannot echo a Content-MD5 back and the chunk lands with an empty ETag. Every ETag derived from those chunks then comes out empty for a single chunk, or d41d8cd98f00b204e9800998ecf8427e-N for several. The caller already hashes the plaintext to send as Content-MD5, so keep that digest as the chunk ETag instead of dropping it, and compute it for a WantMd5 caller under cipher too. * s3: re-encrypt a part copy from a volume-encrypted source UploadPartCopy raw-copies source chunks when neither side uses SSE, which also caught -encryptVolumeData sources. Those chunks are ciphertext a whole-chunk cipher key decrypts, so copying a byte range out of one and keeping the key leaves a destination that fails authentication on GET, and the copied chunks carry no ETag for the part result to report. Route them through the re-encrypting path already used for SSE: it reads the source as plaintext, hashes the part, and writes the destination under the gateway's own encryption. * s3: fetch only the range a part copy asked for The re-encrypting UploadPartCopy path opened the source at offset 0 and threw the prefix away, so assembling an object part by part read the source once per part. Now that volume-encrypted sources take this path too, that is the common case rather than an SSE corner. The chunk stream already seeks, so hand it the range. * s3: reject an unsatisfiable copy-source-range A part copy has no way to report a short part, so a range reaching past the source cannot be clamped the way a GET clamps one. The fast path silently produced a part shorter than asked for, or an empty one; the re-encrypting path pads with zeros, so a 2 MiB source copied as bytes=1048576-9999999 came back as 1 MiB of data followed by 7.5 MiB of nothing. Answer InvalidRange instead, which is what s3-tests' test_multipart_copy_invalid_range expects. |
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Chris Lu
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d2c470af1b |
S3: commit SSE GET status only after the first read succeeds (#10935)
The SSE streaming path kept writing 200/206 from filer metadata before fetching or decrypting anything, so a missing needle or failed decrypt setup surfaced as a broken 200 body. Same deferral as the plain path: the status commits on the first body write, and every failure before that returns to the handler for a clean S3 error response. |
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Chris Lu
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d9d5fab35b |
S3: commit GET status only after the first read succeeds (#10930)
streamFromVolumeServers wrote the 200/206 status from filer metadata before any byte had been fetched from a volume server, so a missing or corrupted needle surfaced as a broken 200 body and the request metrics recorded a success. Defer the status commit to the first body write: a failed first read now returns a clean 500 before headers, while the wire timing of successful responses is unchanged since net/http buffers the status line until body bytes arrive anyway. |
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Chris Lu
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863fec6c3f |
S3: let a key that is a prefix of other keys be an object (#10912)
* filer: keep the sentinel when CreateEntry reports an update failure CreateEntry flattened the error UpdateEntry wraps, so errors.Is stopped matching and ErrExistingIsDirectory and ErrExistingIsFile never reached the S3 mapper, which answered a retryable 500 instead. * s3: let a key that is a prefix of other keys be an object S3 keys are flat, so "a/b" and "a/b/c" are independent objects that coexist in either write order. The filer stores a key as a path, so one of them has to live on the directory the other is nested under. Writing the nested key first refused the prefix key outright. Writing it second promoted the file to a directory, which kept its data but lost the key: an empty object left nothing to recognise it by and disappeared, and one with data listed under a trailing slash it never had. Mark the directory that carries such a key, and write the object onto it when the path is already a directory. The mark makes an empty prefix object visible to listings and readable by GET and HEAD, keeps the empty folder cleaner off it, and lists it under the key it was written with. Deleting the key strips the mark back off along with the data. * filer: keep a TTL off a directory that stands for an object An expired entry is deleted a row at a time, so expiring a directory removes it and leaves everything under it unreachable. Promoting a file to a directory carried its TTL across, and a promoted file is exactly the one that has keys nested under it. Drop the TTL on promotion, and leave one an older build wrote alone. The lifecycle worker still expires the object, through the delete that leaves the directory behind. * s3: delete the null version of a key other keys are nested under The routed delete cannot remove an entry that other keys live under, and answered a retryable 500 rather than falling back to the lock path the unversioned delete already falls back to. That path then looked the entry up under the bucket with the whole key as its name, so the demote wrote it back one directory too high and failed as not found. Fall back on any non-precondition error, and split the key before deleting it. Trailing-slash directory markers with children reach the same delete. * filer: keep the sentinel when MkFile and Mkdir report a create failure Same flattening one layer out: every mkFile caller lost the sentinel, so a CopyObject onto a key that other keys are nested under answered a retryable 500 where a PutObject of the same key answers 409. * s3: copy and rename a key that other keys are nested under Such a key is stored on the directory those keys live in, and copy and rename both refused it: the source lookup maps every directory entry to NoSuchKey, so a key a plain GET serves could not be copied or moved, and the destination side refused it as a directory conflict. The source is read through a view of the entry as the object it names. The destination is written the way a PutObject of that key writes it. A rename at either end copies the object's own data across and strips it off the source key rather than going through AtomicRenameEntry, which moves a directory by moving everything under it - the nested keys are not part of what is being renamed. |
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930603eb74 |
S3: optionally serve remote-mounted objects from remote when the local read fails (#10837)
* feat(s3): serve from remote on local read failure When a locally-cached chunk of a remote-mounted object becomes unreadable (volume server down/restarting, or an evicted needle 404ing under retry-backoff), fall back to serving the object from its mounted remote instead of erroring. A bounded pre-flight probe makes a stuck volume trip the timeout rather than stalling the request. Gated by -localReadFallbackToRemote (default off) with -localReadFallbackTimeout (2s default), so existing deployments are unaffected until they opt in. * fix(s3): register local-read-fallback flags for mini/server/filer The mini, server and filer launchers build S3Options directly and only populate the flag pointers they register. Without registering the two new flags there, startS3Server dereferenced nil pointers and crashed at boot, failing every integration suite that runs `weed mini`. * fix(s3): treat a zero-byte probe read as unreadable A read that returns no byte -- whether it reports io.EOF or no error at all -- means the offset is not locally readable, so the probe must fall back to the remote rather than proceeding to stream a truncated response. Only a returned byte (including the object's final byte with a trailing io.EOF) counts as readable. * s3: finish a mid-stream local read failure from the remote mount The pre-flight probe only proves the byte at the requested offset readable. A multi-chunk object can still lose a later chunk after the 200/206 and its Content-Length are committed, which truncated the body with no fallback. Resume from the mounted remote at the byte the local copy stopped at, so the response still carries the declared length. A short local read that surfaces as a clean EOF is treated the same way instead of silently truncating. * s3: fall back to the remote mount without a CLI switch Serving a remote-mounted object from its authoritative remote is what the read should have done all along -- the alternative is a 500 on an object the cluster can still reach -- so make it the behavior instead of two new flags, with the probe bounded by a constant. * s3: trim the comments on the fallback path * filer: report only the contiguous prefix when a parallel chunk read fails The parallel branch of doReadAt fans the chunk reads straight into their own windows of the output buffer, then sums every task's bytesRead. A middle chunk failing while a later one succeeds therefore returned a length covering a hole the reader never filled, handing the caller zeros in the middle of otherwise valid data. * s3: only splice the remote onto a local prefix while it is the cached generation Eligibility establishes a size match, not byte identity: a remote key overwritten with same-size content between the cache fill and the fallback would have finished the response with bytes from a second generation, under the first one's ETag. Stat the remote before resuming and keep the local error when it no longer matches -- a truncated body is a visible failure, a spliced one is not. --------- Co-authored-by: Chris Lu <chrislusf@users.noreply.github.com> Co-authored-by: Chris Lu <chris.lu@gmail.com> |
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Chris Lu
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db5a086d04 |
read cold remote objects straight from the origin while caching (#10731)
* refactor: extract remote mount resolution into shared helpers * refactor: share the adaptive remote cache wait policy * filer: stream cold remote reads from the origin while caching * s3: stream cold remote reads from the origin instead of 503 retries * test: cover the S3 origin stream-through path * remote mounts: match on path components and prefer the longest mount * fail short origin streams instead of silently truncating * s3: try the origin before failing a cold read on a local cache error * s3: gate origin streaming on the entry's resolved version * return the cache RPC's NotFound as a canonical status and classify it everywhere * filer: keep multipart-range cold reads on the retry path |
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Chris Lu
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7d6c83b126 |
s3: stop treating a directory marker as a versioned object (#10573)
* s3: delete a directory marker instead of versioning it The key "dir/" is stored as the filer directory itself, so a delete marker cannot stand in for it without hiding the children underneath, and its history has to sit inside the directory it describes, where listings keep meeting it. Delete it the way an unversioned bucket already does: remove the directory when nothing is left under it, demote it to a plain directory when children remain, and drop a history an older build recorded for it. * s3: stop resolving directory markers through a version history Nothing records one for them any more, so the lookups that read it are dead weight - and the one in the listing was a filer round trip per directory marker returned, which for a bucket that keeps a marker per directory is the whole listing cost. A listing reads what a directory stands for straight off the entry it already has; a unit test pins that N markers cost one ListEntries rather than N+1. The guard that keeps a history left inside a directory by an older build from surfacing as a key named after it stays. * s3: do not let deleting "dir/" destroy the object at "dir" Writing under an existing object turns that object's entry into a directory while it keeps its data, so the keys "m2" and "m2/" end up sharing one entry. Stripping the entry to delete "m2/" therefore wiped the object at "m2" - a different key, and in a versioned bucket one no delete marker records. Leave a directory holding uploaded data alone; "m2/" does not name it. * s3: make the directory-marker delete fail closed and take the write lock The guard that spares a promoted file only fired when the entry read succeeded, so a transient filer error fell through to the delete and could destroy the object at "dir" anyway. Fail the request instead, take the object write lock so the entry cannot change between the check and the delete, and report a stale history that cannot be removed rather than leaving it to keep naming the key in ListObjectVersions. * s3: check If-Match inside the directory-marker delete lock The lock belongs to the caller: taking it inside the delete nested it under the batch handler's own lock, and since every lock from a gateway shares one owner the inner release would have freed it while the outer caller still assumed it held it. Both callers now own the lock, the single-object path re-checks If-Match inside it the way the other delete paths do, and a batch delete of a trailing-slash key in an unversioned bucket goes through the same marker path instead of the raw delete. A history lookup that fails now fails the delete. |
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Chris Lu
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474a0713b0 |
s3: honor the version history of a directory marker (#10571)
* s3: stop listing a directory marker whose latest version is a delete marker A directory marker is stored as the filer directory itself, so deleting the key "dir/" writes its delete marker into dir/.versions while the directory keeps its mime and stays a key object. Every listing kept reporting the key. Consult that history before treating the entry as a key, and demote it in memory when it is delete-marked so live children still hold the prefix. Also skip the container's own .versions entry while listing inside it: the suffix match read it as the history of a nested object named "", which surfaces as a phantom dir/dir key as soon as a live directory version exists. * s3: a directory marker with version history is not also the latest null version The directory entry behind the key "dir/" is that key's null version, but list-object-versions reported it with IsLatest hardcoded true. After a delete the key came back twice, once as the delete marker and once as a null version, both claiming to be latest. Read the pointer under the directory instead. * s3: resolve directory markers through their version history on GET and HEAD GET and HEAD short-circuit any trailing-slash key straight to the filer directory, so a directory marker kept answering 200 after its delete marker was written. Resolve the key from dir/.versions first when the bucket is versioned: a delete-marked current version answers 404 with x-amz-delete-marker, a named delete-marker version answers 405, and a key with no history keeps today's directory-probe behavior untouched. * s3: re-creating a directory marker retires its delete marker PutObject on a trailing-slash key never looked at the bucket's versioning state, so re-creating a marker after a delete left the latest-version pointer on the delete marker and the key stayed invisible to every versioned read. Point the key back at the directory entry, which is its null version, and drop the null version .versions may still hold — the same two steps a suspended write already takes, now shared. * s3: fail a directory-marker request whose version history cannot be read Every lookup of dir/.versions treated any error as "no history", so a filer hiccup served the directory entry for a key whose current version may be a delete marker, reported a null version as latest over one, and let a PUT report success without retiring the delete marker it was meant to retire. Only a confirmed absence takes the no-history path now. * s3: cancel the directory-marker probe stream instead of abandoning it The probe answers off the first entry and returns, leaving the ListEntries stream open for the life of the parent context. Give it a context of its own. |
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Lars Lehtonen
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2bea4dd610 | chore(weed/s3api): prune dead code (#10462) | ||
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Chris Lu
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68a4e3347f |
S3: track manifest blob ownership through multipart completion (#10386)
* s3: track manifest blob ownership through multipart completion Manifest blobs made three orphan paths. A partial fold that failed midway kept its earlier batches on volume servers while the write fell back to flat chunks; the fold now records each saved blob and deletes them on error. A completion that failed after preparing left its fresh manifests behind on every retry; the completion state now owns them and deletes them unless a failed rollback left the version entry still holding them. And a completed upload removes its parts metadata-only, which stranded the part-manifest blobs superseded by flattening; those are collected during flattening and deleted once the completion commits. Two shared-chunk hazards nearby: the version-file rollback deleted its data, destroying the still-registered parts (worse once manifests resolve to inner chunks), and the idempotent-replay cleanup data-deleted leftover parts whose chunks the live object references. Both are metadata-only now. * s3: trim chunk manifest comments * s3: test manifest fold rollback and part range selection The fold-with-rollback and the boundary-to-byte-range logic were only exercised by hand against a live server; give both an injectable seam and cover the fold, the below-threshold and SSE no-ops, the midway failure deleting the blobs it saved, and offset-vs-legacy-index range selection including indexes that no longer address the chunk list. |
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Chris Lu
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542495f1f1 |
S3: fold large chunk lists into manifest chunks on the direct write path (#10383)
s3: fold large chunk lists into manifest chunks on the direct write path The S3 gateway uploads chunks itself and hands the filer a fully prepared entry. On the routed write path (ObjectTransaction) the filer stores that entry as-is, so a large PutObject or CompleteMultipartUpload persisted its whole flat chunk list - a 900GB object carries 120k chunk references in one entry. Manifestize on the gateway before the entry is written, the same way mount, WebDAV, and filer.copy prepare theirs. Multipart part boundaries also record byte offsets now: the stored chunk indexes stop matching the entry once the list is folded, and partNumber reads plus GetObjectAttributes prefer the offsets. Legacy index-only records still work, with bounds checks instead of a possible panic. Copy paths resolve a manifested source into data chunks before their per-chunk copy loops - copying a manifest chunk raw would store its blob as object data still pointing at the source - and a large copied list is folded again on the destination. Completion likewise resolves manifest chunks a part entry may carry (the filer folds an oversized UploadPartCopy range) before rebasing part offsets. |
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Chris Lu
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6f14be1138 |
stats: remote-mount bucket cache hit/miss metrics (#10352)
Reads of remote-backed entries now record hit or miss in
SeaweedFS_remote_cache_read_total{source,bucket,result} on the filer HTTP
path and the S3 gateway, so cache effectiveness of mounted buckets can be
graphed. Inline-content entries count as hits since they are served
locally without chunks. The filer purges the per-bucket series when the
bucket directory is deleted, so a standalone filer does not accumulate
series across bucket delete/recreate churn.
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Cole Helbling
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eefe634962 |
s3api: FULL_OBJECT checksums for CRC multipart uploads (#10236)
CRC64NVME multipart objects now emit a full-object checksum instead of a composite base64-N value, matching AWS (CRC64NVME supports full-object only). Adds x-amz-checksum-type handling (COMPOSITE/FULL_OBJECT) for CRC32/CRC32C/CRC64NVME via CRC combination, resolved at CreateMultipartUpload and applied at completion. |
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Chris Lu
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d0e47cf4da |
s3: answer directory-path probes like AWS so Flink savepoints restore (#10225)
* s3: answer application/x-directory for a directory without a stored mime A real directory reached via a trailing-slash GET/HEAD answered the octet-stream default when it had no stored mime, so Hadoop-style S3 filesystems (flink-s3-fs-presto and friends) classified the path as a 0-byte file instead of a directory and then failed reading it as one. Answer application/x-directory, the marker type those clients probe for. Stored mimes still echo verbatim, and a file promoted to a directory keeps octet-stream for its data. * s3: 404 GET and HEAD on a bare directory path consistently A directory with no object data of its own answered differently per path: plain GET gave an empty 200, ranged GET and non-versioned HEAD gave 404, and on versioned buckets the null-version fallback adopted the filer directory as a 0-byte object and answered 200. Clients that probe HEAD-then-GET took the 200s at face value, treated the path as an empty file, and never fell back to LIST-based directory discovery. Answer 404 for a bare directory path everywhere, which is what AWS returns for a prefix. A file promoted to a directory keeps its data and stays retrievable. |
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Chris Lu
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95427b5573 |
security: add BearerPrefix constant for Authorization headers (#10101)
Introduce security.BearerPrefix ("Bearer ", RFC 6750) and use it
everywhere an "Authorization: Bearer <token>" header is constructed,
replacing the scattered "BEARER "/"Bearer " string literals. SeaweedFS
matches the scheme case-insensitively when parsing (security.GetJwt), so
behavior is unchanged; this removes the magic string and settles the
casing on the standard form. The parser's upper-case comparison stays as
is on purpose.
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Chris Lu
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7abed4e517 |
s3: skip 503 when client disconnects during remote cache wait (#10071)
s3: don't write 503 to a disconnected client during remote cache wait When the remote-only cache poll returns without chunks, re-check the request context before emitting 503 + Retry-After. A client that disconnected during the wait surfaces as context.Canceled, which the caller already handles silently; writing to the closed connection only produced broken-pipe log noise. |
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Chris Lu
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63f2f0bef5 |
s3: keep a file promoted to a directory retrievable as an object (#10070)
* filer: treat a directory carrying object data as an S3 key object A file promoted to a directory by a child write keeps its chunks, inline content, or remote-tiered entry. Recognize that as a directory key object, not only when a Mime is set, so the object still lists, demotes on delete, and is not reclaimed by cleanup like the object it still is. * filer: keep the empty-folder cleaner from reclaiming a promoted object The cleaner skips directory key objects, but its check only looked at the Mime. Mirror the chunks/content/remote check so a file promoted to a directory is not deleted once its children are gone. * s3: serve ranged GET for a directory that carries object data Reject only zero-size directories so a file promoted to a directory streams range requests instead of returning 404, while empty directories still 404. * s3: return HEAD metadata for a directory that carries object data HEAD now 404s a directory only when it has no data, so a promoted object is retrievable while empty/implicit directories still fall back to LIST. |
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patrick
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d7860ddf24 | s3api: reject malformed Range offsets (#10034) | ||
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Chris Lu
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b763a5f6bf |
s3: improve TTFB for large remote objects (#10010)
* s3: add streaming reader interface for remote storage Add RemoteStorageStreamReader optional interface to support efficient streaming of large remote objects without buffering entire file in memory. This enables future stream-through caching where data can be served to clients while simultaneously writing to volume servers. Implement ReadFileAsStream() for S3, GCS, and Azure backends using their native streaming APIs. This provides the foundation for improving TTFB on large remote file access by serving data directly from remote storage while background cache operation populates local chunks. The streaming interface allows remote storage backends to return io.ReadCloser, enabling efficient memory usage for multi-GB objects compared to the current ReadFile() approach which buffers entire ranges in memory. * s3: adaptive timeout for remote object caching to improve TTFB Use size-aware cache polling timeout to balance cache-hit rate against time-to-first-byte: - Small files (<50MB): 10s timeout - more likely to complete caching before timeout, improving subsequent request performance - Medium files (50-500MB): 5s timeout - default balance - Large files (>500MB): 2s timeout - fail-fast to improve initial TTFB for very large downloads This reduces waiting time for large remote files while maintaining high cache-hit rate for smaller files that cache quickly. * s3: address code review feedback for stream-through cache - Move startBackgroundRemoteCache call after policy recheck to avoid cache side effects for denied requests (authorization first) - Make startBackgroundRemoteCache version-aware by accepting versionId parameter and using buildVersionedRemoteObjectPath - Add timeout (5 minutes) to background cache context to prevent goroutine pile-up if RPC stalls under load - Update cacheRemoteObjectForStreamingWithShortTimeout to return both entry and error, allowing callers to distinguish transient errors (timeout/cancellation) from permanent errors (not found, denied) - Update streamFromVolumeServers to handle permanent cache errors with appropriate HTTP status codes (404 for not found, 503 for transient) |
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Chris Lu
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b888cec106 |
s3: bound streaming remote-cache wait so large cold GetObject returns 503, not a hang (#9988)
* s3: bound streaming remote-cache wait so large cold GetObject returns 503, not a hang A remote-only object whose download outlasts the 30s dedup attempt fell through to cacheRemoteObjectForStreaming, which waited on the raw request context with no bound. For multi-GB blobs the client read timeout fires first, so the request was canceled and surfaced as InternalError rather than the 503 + Retry-After the handler already emits. The filer keeps caching on a detached context, so the retry would have streamed from the cached chunks. Bound the wait under common client read timeouts: the 503 fires while the client is still connected, and a retry picks up the finished cache. * s3: make the streaming remote-cache timeout atomic The bound is a package-level var so tests can shorten it. Hold it as an atomic int64 so a test that stores a short value can never race the request path that loads it. * s3: assert the streaming-cache timeout test waits on the bound The upper-bound-only check would also pass if the RPC returned immediately on a setup error. Add a lower bound so the test fails unless the bounded wait fired. |
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Chris Lu
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2d1b8be22b |
s3: route object reads to the key's owner filer (#9806)
* s3: route object reads to the key's owner filer Writes already route by key to the owner filer on the lock ring, where the entry is created. Reads went to the gateway's local filer and treated its NotFound as authoritative, so a GET on one gateway could miss an object another gateway had just written until the filers' metadata replication caught up. Resolve an object's entry from the key's owner first, failing over to the gateway's filer set only on transport errors. An owner NotFound stays authoritative: no fan-out across filers, and no resurrecting a peer's not-yet-replicated tombstone, so a delete routed to the owner is visible at once and a genuine miss costs one lookup. Keys owned by the local filer are unchanged. Objects written through the non-routed lock path land on a gateway's local filer, so they can still read as absent on the owner until they replicate. withFilerClientFailover takes a preferred start filer; the object-entry reads pass the owner, every other caller passes "" and keeps the current-filer fast path. * s3: consult the prior owner on a rebalance-window read miss Owner-first reads route a key to its current ring owner. When a filer joins, ~1/N of keys reassign to it, and the new owner may not have replicated a just-moved key yet, so an owner NotFound would surface a transient 404 for an object that already exists elsewhere. Retain the previous ring on the gateway's LockClient for a cooling-off window (PriorOwnerForKey, mirroring the master's LockRing.PriorOwner) and, on the owner's NotFound, probe the key's previous owner once before treating the miss as final. The probe is scoped to keys whose ownership actually moved and only within the window, so steady-state reads are untouched. This trades the transient scale-up 404 for a transient stale read if a delete routed to the new owner races the same window — the same authoritative-NotFound tradeoff, narrowed to the rebalance. * s3: try healthy filers before unhealthy ones on failover The candidate list probed its first entry (usually the current filer) unconditionally, so a health-flagged current filer cost a transport timeout on every ordinary call before failover reached a replica. Partition candidates into healthy and unhealthy, keep priority within each, and fall back to unhealthy ones only when all healthy ones fail. * reduce comments on the routed read and lock client paths * s3: skip a recently-unreachable owner on route-by-key reads The gateway's filer health tracking no-ops for an owner outside the static -filer list, so during a sustained owner outage every route-by-key read re-dials the dead owner before failing over. Flag an owner whose owner-first read hit a transport error and skip it (read local-first) for a short TTL, so reads pay one dead dial per TTL instead of one per request; the flag expires so owner-first reads resume once the owner or the ring recovers. * s3: always try the preferred owner first, health-order only the rest The healthy/unhealthy partition also demoted a health-flagged preferred owner behind healthy replicas, so a replica's authoritative NotFound could mask a write that had only reached the owner — the read-after-write race this routing exists to close. Pull preferred out of the partition and keep it first; the recently-unreachable gate already steers reads away from a genuinely dead owner. |
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Chris Lu
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0e35235908 |
s3: return NoSuchVersion (not NoSuchKey) for a missing versionId (#9749)
GET/HEAD object with an explicit versionId that does not exist returned NoSuchKey. AWS S3 returns NoSuchVersion (404) for this case; tools that distinguish "key gone" from "this version gone" rely on that code. Add the ErrNoSuchVersion error code and use it on the GET and HEAD specific-version lookups. Only a genuine not-found maps to NoSuchVersion; a transient or internal filer error now maps to InternalError (500) instead of a misleading 404. getSpecificObjectVersion wraps its lookup error with %w so callers can detect filer_pb.ErrNotFound. |
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AlekseyandChris Lu
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917a87928c |
fix(s3api/list): cancel ListEntries stream in hasChildren (#9617)
* fix(s3api/list): cancel ListEntries stream in hasChildren * fix(s3api): use filer_pb.List in hasChildren filer_pb.List already wraps the ListEntries stream in a cancellable context, so the single-entry probe needs no separate helper or manual context plumbing to avoid the leaked gRPC stream goroutine. * fix(s3api): propagate request context into hasChildren Thread r.Context() through listFilerEntries and hasChildren so the implicit-directory probe cancels when the client disconnects, instead of running on context.Background(). --------- Co-authored-by: Chris Lu <chris.lu@gmail.com> |
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Chris Lu
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3f1eaf9724 |
fix(s3/audit): emit audit log for successful GET/HEAD (#9467)
* fix(s3/audit): emit audit log for successful GET/HEAD Successful GET/HEAD object requests never produced a fluent audit entry because those handlers write the response directly (streaming for GET, WriteHeader for HEAD) and never reach a PostLog call site. The wiki advertises GET as an audited verb, so the asymmetry surprises operators who rely on the log for read-access auditing. Move the safety net into the track() middleware: tag each request with an audit-tracking flag, let PostLog/PostAccessLog (delete path) mark it, and emit a single fallback entry after the handler returns when nothing fired. The recorder's status flows into the fallback so the audit row still reflects 200/206 vs 404 etc. No double logging for handlers that already emit (write helpers, error paths, bulk delete). Refs #9463 * fix(s3/audit): defensive nil checks on audit-tracking helpers Address PR review: guard against nil request and nil *atomic.Bool stored under the audit-tracking key. The conditions are unreachable today (the key is private and we only ever store new(atomic.Bool)), but the checks are free and keep the helpers safe if a future caller misbehaves. * test(s3/audit): track() audit fallback coverage + stale comment cleanup (#9469) test(s3/audit): cover track() fallback wiring + cleanup Adds two unit tests in weed/s3api/stats_test.go that exercise the audit-tracking flag set up by track(): one verifies the fallback path fires when a handler writes the response directly (the GET/HEAD object regression in #9463), the other verifies the flag is set when a handler emits PostLog itself so the fallback is skipped. To make the wiring observable without standing up fluent, PostLog now marks the audit flag before short-circuiting on a nil Logger; production behavior is unchanged (no logger, no posting) but the flag stays consistent. Also drops two stale comments in s3api_object_handlers.go that still referenced proxyToFiler — that helper was removed when GET/HEAD started streaming from volume servers directly. Stacks on #9467. |
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Chris Lu
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6844ec067c |
fix(s3): cache remote-only source before CopyObject (#9304) (#9305)
* fix(s3): cache remote-only source before CopyObject (#9304) CopyObject from a remote.mount source whose object lives only upstream created a destination entry with FileSize > 0 but no chunks/content, because the resolved source entry has no local chunks and the copy path fell into the "inline/empty chunks" branch with empty entry.Content. A subsequent GET returned 500 with "data integrity error: size N reported but no content available". CopyObjectPart had the same shape via copyChunksForRange iterating an empty chunk list. Detect entry.IsInRemoteOnly() right after resolving the source in both CopyObjectHandler and CopyObjectPartHandler and cache the object to the local cluster first via a new cacheRemoteObjectForCopy helper (a copy-time analogue of cacheRemoteObjectForStreaming with a bounded 30s timeout and version-aware path resolution). If caching fails or produces no chunks, return 503 with Retry-After: 5 instead of writing a metadata-only destination, mirroring the GetObject behavior added in the #7817 cold-cache fix. Adds TestCopyObjectRemoteOnlySourceDetection pinning the four entry shapes the fix branches on plus the pre-fix broken-output shape. * address PR review on remote-only copy fix - Use the resolved entry's version id when srcVersionId is empty so a CopyObject reading the latest object in a versioning-enabled bucket caches the correct .versions/v_<id> path instead of getting stuck in a 503 retry loop. New helper resolvedSourceVersionId handles the fallback for both CopyObject and CopyObjectPart. - Drop the redundant cachedEntry.IsInRemoteOnly() recheck in both handlers; the cache helper now reports success based on local data presence, and IsInRemoteOnly does not look at inline Content so keeping the check would 503 on small inline-cached objects. - Treat inline Content as a successful cache result in both cacheRemoteObjectForStreaming and cacheRemoteObjectForCopy via a shared cachedEntryHasLocalData predicate. The CopyObject inline branch already handles entries that have Content but no chunks. - Extract buildVersionedRemoteObjectPath so the streaming and copy cache helpers share path construction. Adds TestResolvedSourceVersionId and TestCachedEntryHasLocalData to pin the new helpers' contracts. * narrow streaming cache contract back to chunks-only CodeRabbit flagged that cacheRemoteObjectForStreaming's caller in streamFromVolumeServers (lines 997-1002) still required non-empty chunks, so content-only cache hits would fall through to a 503 retry loop instead of being honored. Resolve by keeping the helper's contract chunks-only: the filer's caching code only ever writes chunks, the streaming downstream isn't wired to read inline Content from a cached entry, and a partial range- aware inline writer here would be overkill for a path that doesn't actually occur in practice. cacheRemoteObjectForCopy keeps the relaxed contract since the copy path's inline branch genuinely handles both chunked and content-only entries. Document the asymmetry on cachedEntryHasLocalData and on cacheRemoteObjectForStreaming so a future reader can see why the two helpers diverge. * extend version-id resolution to streaming cache path CodeRabbit flagged that GetObjectHandler still passed the raw query versionId to cacheRemoteObjectForStreaming. For latest-version reads in versioning-enabled buckets that stays empty even though the resolved entry lives at .versions/v_<id>, so remote-only GETs would keep caching the wrong path and 503-ing forever. Reuse the new resolvedSourceVersionId helper at the streaming call site too. Also document on cachedEntryHasLocalData that the zero-byte case flagged in the same review is handled upstream (IsInRemoteOnly requires RemoteSize > 0, so the cache helper is never invoked for empty remote objects -- CopyObject's pre-existing inline branch writes a correct empty destination directly). Pin this with a new test case. * trim verbose comments Drop tutorial-style and review-history comments. Keep only the WHY that isn't obvious from identifiers: the #9304 reference on the new branches in CopyObject / CopyObjectPart, the latest-version-fallback rationale on resolvedSourceVersionId, and the streaming/copy contract asymmetry on cachedEntryHasLocalData. * drop issue references from comments Issue numbers belong in PR descriptions and commit messages, not in source comments where they rot. Replace with the underlying invariant the code is preserving. * test: drive remote-object cache helpers through real gRPC Existing tests only re-enacted helper-function branching in test space, so they could not have caught a handler that consumed a remote-only entry without going through the cache. Stand up an in-process filer gRPC server (UnimplementedSeaweedFilerServer + configurable CacheRemoteObjectToLocalCluster response) and exercise the two cache helpers end-to-end. What's pinned: - cacheRemoteObjectForCopy returns nil when the cache makes no progress (response is still remote-only), lets gRPC errors through as nil, accepts both chunked and inline-content cache hits, and surfaces deadline-exceeded as nil so callers can 503 instead of holding the request open. - Versioned source paths route to .versions/v_<id>; non-versioned and "null" stay at the bucket-relative path. Captured by reading the request the stub server received. - cacheRemoteObjectForStreaming holds the stricter chunks-only contract: a content-only cache hit is not propagated, since streamFromVolumeServers' downstream isn't wired to read from inline Content there. Any current or future handler that calls these helpers exercises the same gRPC path under test, so the bug class is closed for helper-routed cache calls. * move remote-only copy test into the integration suite The previous gRPC-stub test in weed/s3api/ was integration-flavored but stubbed; relocate the coverage to the existing two-server suite under test/s3/remote_cache/, which already exercises the real remote.mount + remote.uncache flow against a primary SeaweedFS plus a secondary acting as remote storage. The new test/s3/remote_cache/remote_cache_copy_test.go drives: - TestRemoteCacheCopyObject: upload to primary, uncache (entry now remote-only), CopyObject to a new key, GET the destination. Pre- fix the GET returned 500 'data integrity error: size N reported but no content'; this pins the fixed behavior over real HTTP through the actual handler stack. - TestRemoteCacheCopyObjectPart: same shape via multipart UploadPartCopy on a 6 MiB object split into two parts, exercising CopyObjectPartHandler's range-copy path. Drop weed/s3api/s3api_remote_storage_grpc_test.go: the helper-level classification tests in s3api_remote_storage_test.go still cover the contract pieces (cachedEntryHasLocalData, resolvedSourceVersionId, the remote-only entry shape), and the integration suite covers the end-to-end behavior that those classifications enable. |
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Chris Lu
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a2639b533e |
fix(s3api): return 503 + Retry-After when remote object not cached yet (#9233)
* fix(s3api): return 503 with Retry-After when remote object not cached yet When a GET hits a remote-only object whose cache fill timed out or was canceled, the handler returned 500 InternalError. SDK clients treat 500 as a server bug and surface it as a fatal error (boto3 S3DownloadFailedError), even though the cache is often still filling in the background and the next request would succeed. Return 503 ServiceUnavailable with Retry-After: 5 instead, matching AWS S3's "try again later" semantics. AWS SDKs already classify 503 as retryable and apply exponential backoff transparently, so clients recover without changes. Refs https://github.com/seaweedfs/seaweedfs/discussions/9174 * treat client cancel as cancellation, not 503 If r.Context() is already canceled when the cache attempt returns no chunks, the cache failure is almost certainly a side-effect of the client disconnecting, not real backpressure. Surface the context error so GetObjectHandler logs at V(3) and skips writing a response, instead of synthesizing a 503 that nobody will read. Addresses Gemini review feedback on #9233. * simplify comments |