Lane numbers that withdrew and are asking to be copied again, comma separated.
lanes_provisioned is a high-water mark, so a withdrawn lane is unreachable from the primary
without this queue. A lane enqueues itself; nothing polls (a poll is a DO request per lane).
Lane numbers that withdrew and are asking to be copied again, comma separated.
lanes_provisionedis a high-water mark, so a withdrawn lane is unreachable from the primary without this queue. A lane enqueues itself; nothing polls (a poll is a DO request per lane).