osd/scrub: add "queue my request" flag to replica reservation messages
Up-to-date primaries will set this flag when sending a reservation
request. The replica OSD, if too busy to handle the request immediately, will queue
it until such time that the number of concurrent reservations is below the
configured limit. The queued requests are honored in FIFO order.
Old primaries will not set this flag, and will receive the expected
grant or deny reply immediately.
projects / ceph.git / commit