* fix(topology): drop per-disk task-type conflict map (#9147)
Different job types (Balance, ErasureCoding, Vacuum) operate on different
volumes, so a per-disk cross-type exclusion adds no correctness guarantee
beyond what HasAnyTask already enforces at task detection time. The
conflict map turned this into a deadlock on small clusters: a single
in-flight (or retrying) balance task would prune the source/destination
disks from EC placement, dropping the candidate count below MinTotalDisks
and permanently blocking auto-EC.
Removing the map lets EC see all eligible disks. Per-volume safety is
still guaranteed by HasAnyTask, and per-disk load shaping remains
available via MaxConcurrentTasksPerDisk.
* chore(topology): trim verbose comments from #9147 fix
Chris Lu
eaab3ec5d0