* pb: add multipart concurrency fields to RemoteConf and tier move requests
RemoteConf gains upload_concurrency/download_concurrency (0 = client
default); VolumeTierMoveDatToRemote/FromRemote requests gain a
concurrency field (0 = backend default).
* remote storage: honor RemoteConf upload/download concurrency in s3 and azure clients
s3 client: ReadFile passes conf download_concurrency to the downloader,
WriteFile uses upload_concurrency for the uploader; previously
hard-coded 1 upload / 5 download parts. 0 keeps defaults. Same for
azure client.
* storage: plumb concurrency through backend interface and tier upload/download
BackendStorage.CopyFile/DownloadFile take a concurrency hint (<=0 =
backend configured default); s3 backend reads
upload_concurrency/download_concurrency from scaffold config with
parseConcurrency fallback, rclone updated to the new signature. Tier
move gRPC handlers forward the request concurrency to the backend.
* shell: -upload_concurrency/-download_concurrency for remote.configure, -concurrent for volume.tier
remote.configure exposes upload/download concurrency persisted into
RemoteConf; volume.tier move/evict commands forward -concurrent to the
tier move requests. Documented in master-cloud.toml scaffold.
* test: cover concurrency propagation in remote tier integration test
* remote.configure: merge existing config on partial update
Load the stored RemoteConf before saving so a partial update (e.g. only
-upload_concurrency) preserves credentials, endpoints, and type instead
of replacing them with new-config defaults. Only treat a confirmed
ErrNotFound as a new configuration; propagate all other load errors so a
transient filer failure does not overwrite stored settings.
On a type transition, reset backend-specific fields to the destination
type's new-config defaults rather than inheriting the old backend's
empty values. Bound configured concurrency to a sane maximum.
* remote storage: honor configured download concurrency in S3 and Azure
ReadFileWithConcurrency now resolves a zero request override against the
client's configured download_concurrency (new downloadConcurrency()
helpers), so the remote-mount/cache read path honors
RemoteConf.DownloadConcurrency instead of the hard-coded default.
Azure also clamps the resolved value to math.MaxUint16 regardless of
whether the fallback was used, preventing uint16 wraparound when a
configured value exceeds 65535.
* shell: rename -concurrent to -concurrency and validate tier transfer bounds
Rename the -concurrent flag to -concurrency across volume.tier.upload,
volume.tier.download, and volume.tier.compact to match the proto field and
RemoteConf field names. Add validateTierConcurrency to reject values that
would wrap int32 or exceed a 1024 cap before constructing the request.
* server: clamp tier move concurrency in gRPC handlers
Add clampTierConcurrency to both VolumeTierMoveDatToRemote and
VolumeTierMoveDatFromRemote handlers so a direct gRPC caller cannot spawn
an unbounded number of network workers.
* trim verbose comments added with concurrency feature
Remove redundant doc comments on the backend interface, rclone backend,
s3_backend parseConcurrency, and test helpers that restated the obvious.
* remote.configure: apply type defaults before re-parse so explicit flags win
applyTypeDefaults ran after the second flag parse, overwriting explicit
destination flags (e.g. -s3.region=eu-west-1) with new-config defaults.
Move the type-transition default reset before the re-parse so user-supplied
flags override the destination defaults.
* remote.configure: only treat explicit -type as a type transition
The first parse defaults -type to s3, so a concurrency-only update on an
existing non-S3 config captured requestedType=s3 and wrongly triggered a
type transition, resetting the stored backend to S3. Use fs.Visit to
detect whether -type was explicitly supplied; an omitted -type keeps the
stored backend.
---------
Co-authored-by: Jack Meredith <9480542+jackusm@users.noreply.github.com>
Co-authored-by: Chris Lu <chris.lu@gmail.com>
