Intended for testing, or hot-fixing out-of-space issues in production.
Tablet load balancer uses this information for determining per-shard load
so reducing capacity will cause tablets to be migrated away from the node.
Instantiated only on shard 0.
Currently, only subscribe from unit test
Manual unit test using loop mount was added.
Note that the test requires sudo access
and root access to /dev/loop, so it cannot
run in rootless podman instance, and it'd
fail with Permission denied.
Signed-off-by: Benny Halevy <bhalevy@scylladb.com>
Closesscylladb/scylladb#21523