* s3: enforce bucket quota on logical size, not un-vacuumed physical size
A bucket full of deleted/overwritten objects awaiting vacuum went
read-only while its live data stayed under quota, because enforcement
used the raw single-copy volume size with garbage included. Subtract
DeletedByteCount via a LogicalSize() helper in the auto-enforce loop,
the s3.bucket.quota.enforce command, and the bucket_size_bytes metric
(labeled logical but counting garbage too). Deleting objects now
relieves quota immediately and enforcement matches the UI usage figure.
* admin: surface bucket read-only state in the S3 buckets UI
Read the read-only flag quota enforcement writes to filer.conf and show
it as a badge in the bucket list and a Status row in the details modal,
so an operator can see why writes are being rejected.
Chris Lu
292c7493fa