From: maxg@mellanox.com (Max Gurtovoy)
Subject: [PATCH for-4.12-rc] nvme-rdma: fast fail incoming requests while we reconnect
Date: Tue, 6 Jun 2017 16:46:52 +0300 [thread overview]
Message-ID: <9e629028-98df-8165-6826-82fd497d7521@mellanox.com> (raw)
In-Reply-To: <1496684156-32335-1-git-send-email-sagi@grimberg.me>
hi,
> -static inline bool nvme_rdma_queue_is_ready(struct nvme_rdma_queue *queue,
> +static inline int nvme_rdma_queue_is_ready(struct nvme_rdma_queue *queue,
> struct request *rq)
> {
> if (unlikely(!test_bit(NVME_RDMA_Q_LIVE, &queue->flags))) {
> @@ -1441,11 +1443,22 @@ static inline bool nvme_rdma_queue_is_ready(struct nvme_rdma_queue *queue,
>
> if (!blk_rq_is_passthrough(rq) ||
> cmd->common.opcode != nvme_fabrics_command ||
> - cmd->fabrics.fctype != nvme_fabrics_type_connect)
> - return false;
> + cmd->fabrics.fctype != nvme_fabrics_type_connect) {
> + /*
> + * reconnecting state means transport disruption, which
> + * can take a long time and even might fail permanently,
> + * so we can't let incoming I/O be requeued forever.
> + * fail it fast to allow upper layers a chance to
> + * failover.
> + */
> + if (queue->ctrl->ctrl->state == NVME_CTRL_RECONNECTING)
Sagi/Christoph,
It should be queue->ctrl->ctrl.state.
we are testing this patch also now.
next prev parent reply other threads:[~2017-06-06 13:46 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-05 17:35 [PATCH for-4.12-rc] nvme-rdma: fast fail incoming requests while we reconnect Sagi Grimberg
2017-06-06 7:15 ` Christoph Hellwig
2017-06-06 13:46 ` Max Gurtovoy [this message]
2017-06-06 15:33 ` Christoph Hellwig
2017-06-06 18:28 ` Sagi Grimberg
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