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Eliah RusinandClaude Opus 5.5
68944e83a3
remote_storage/s3_tier.rs returned Result<_, String> from every
transfer (upload_file, download_file, read_range[_blocking],
delete_file[_blocking]) and from the tier runtime helpers. The tier
move handlers could only wrap that in Status::internal, so a .dat whose
remote object is gone was indistinguishable from an I/O failure to
weed shell.
Add TierError { NotFound, Io, RuntimeUnavailable, Aborted }. Each
variant carries the existing message verbatim. NotFound follows the
rules remote_storage/s3.rs already uses: raw 404 status on HEAD,
NoSuchKey code on GET; a bare 404 on GET stays Io. A progress-callback
Err becomes Aborted. VolumeError gains a transparent Tier variant and
From<VolumeError> for Status maps Tier(NotFound) to NotFound; the tier
move handlers go through status_with_context, so their message text is
unchanged. Every other tier failure is still Internal.
The remote needle read path keeps io::Error::other, so its error kind
and vacuum's handling of it do not change.
Co-authored-by: Claude Opus 5.5 (1M context) <noreply@anthropic.com>