* filer.meta.backup: stream from the start of an unfinished walk
A walk only inserts entries, so when the first walk is interrupted the
next start walks again and streams from the second walk's start: deletes
and renames between the two walks never reach the backup store. Keep the
first walk's start time in the store until a walk completes and stream
from it.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* filer.meta.backup: start fresh once the stream has passed an earlier walk's start
A walk start left in the store by a crash between saving the offset and
clearing it, or by an interrupted -restart followed by a plain restart,
stops mattering once the stream saves an offset past it. Ignore it then
instead of replaying from it on the next walk.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* filer.meta.backup: fail the walk on an unreadable offset
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
