From: Chao Leng <lengchao@huawei.com> To: <linux-nvme@lists.infradead.org> Cc: <kbusch@kernel.org>, <axboe@fb.com>, <hch@lst.de>, <sagi@grimberg.me>, <linux-block@vger.kernel.org>, <axboe@kernel.dk> Subject: [PATCH v5 3/3] nvme-rdma: avoid IO error for nvme native multipath Date: Mon, 1 Feb 2021 11:49:40 +0800 [thread overview] Message-ID: <20210201034940.18891-4-lengchao@huawei.com> (raw) In-Reply-To: <20210201034940.18891-1-lengchao@huawei.com> Work with nvme native multipath, if a path related error occurs when queue_rq call HBA drive to send request, queue_rq will return BLK_STS_IOERR to blk-mq. The request is completed with BLK_STS_IOERR instead of fail over to retry. queue_rq need complete the request with NVME_SC_HOST_PATH_ERROR and set the state of request to MQ_RQ_COMPLETE, the request will fail over to retry if needed. Signed-off-by: Chao Leng <lengchao@huawei.com> --- drivers/nvme/host/rdma.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c index b7ce4f221d99..5fc113dd3302 100644 --- a/drivers/nvme/host/rdma.c +++ b/drivers/nvme/host/rdma.c @@ -2084,8 +2084,19 @@ static blk_status_t nvme_rdma_queue_rq(struct blk_mq_hw_ctx *hctx, err = nvme_rdma_post_send(queue, sqe, req->sge, req->num_sge, req->mr ? &req->reg_wr.wr : NULL); - if (unlikely(err)) + if (unlikely(err)) { + if (err == -EIO) { + /* + * Fail the reqest so upper layer can failover I/O + * if another path is available + */ + req->status = NVME_SC_HOST_PATH_ERROR; + blk_mq_set_request_complete(rq); + nvme_rdma_complete_rq(rq); + return BLK_STS_OK; + } goto err_unmap; + } return BLK_STS_OK; -- 2.16.4
WARNING: multiple messages have this Message-ID (diff)
From: Chao Leng <lengchao@huawei.com> To: <linux-nvme@lists.infradead.org> Cc: axboe@kernel.dk, linux-block@vger.kernel.org, sagi@grimberg.me, axboe@fb.com, kbusch@kernel.org, hch@lst.de Subject: [PATCH v5 3/3] nvme-rdma: avoid IO error for nvme native multipath Date: Mon, 1 Feb 2021 11:49:40 +0800 [thread overview] Message-ID: <20210201034940.18891-4-lengchao@huawei.com> (raw) In-Reply-To: <20210201034940.18891-1-lengchao@huawei.com> Work with nvme native multipath, if a path related error occurs when queue_rq call HBA drive to send request, queue_rq will return BLK_STS_IOERR to blk-mq. The request is completed with BLK_STS_IOERR instead of fail over to retry. queue_rq need complete the request with NVME_SC_HOST_PATH_ERROR and set the state of request to MQ_RQ_COMPLETE, the request will fail over to retry if needed. Signed-off-by: Chao Leng <lengchao@huawei.com> --- drivers/nvme/host/rdma.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c index b7ce4f221d99..5fc113dd3302 100644 --- a/drivers/nvme/host/rdma.c +++ b/drivers/nvme/host/rdma.c @@ -2084,8 +2084,19 @@ static blk_status_t nvme_rdma_queue_rq(struct blk_mq_hw_ctx *hctx, err = nvme_rdma_post_send(queue, sqe, req->sge, req->num_sge, req->mr ? &req->reg_wr.wr : NULL); - if (unlikely(err)) + if (unlikely(err)) { + if (err == -EIO) { + /* + * Fail the reqest so upper layer can failover I/O + * if another path is available + */ + req->status = NVME_SC_HOST_PATH_ERROR; + blk_mq_set_request_complete(rq); + nvme_rdma_complete_rq(rq); + return BLK_STS_OK; + } goto err_unmap; + } return BLK_STS_OK; -- 2.16.4 _______________________________________________ Linux-nvme mailing list Linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme
next prev parent reply other threads:[~2021-02-01 3:50 UTC|newest] Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-02-01 3:49 [PATCH v5 0/3] avoid double request completion and IO error Chao Leng 2021-02-01 3:49 ` Chao Leng 2021-02-01 3:49 ` [PATCH v5 1/3] blk-mq: introduce blk_mq_set_request_complete Chao Leng 2021-02-01 3:49 ` Chao Leng 2021-02-04 15:27 ` Jens Axboe 2021-02-04 15:27 ` Jens Axboe 2021-02-04 15:30 ` Christoph Hellwig 2021-02-04 15:30 ` Christoph Hellwig 2021-02-04 15:32 ` Jens Axboe 2021-02-04 15:32 ` Jens Axboe 2021-02-04 15:36 ` Christoph Hellwig 2021-02-04 15:36 ` Christoph Hellwig 2021-02-04 15:41 ` Jens Axboe 2021-02-04 15:41 ` Jens Axboe 2021-02-01 3:49 ` [PATCH v5 2/3] nvme-fabrics: avoid double request completion for nvmf_fail_nonready_command Chao Leng 2021-02-01 3:49 ` Chao Leng 2021-02-01 3:49 ` Chao Leng [this message] 2021-02-01 3:49 ` [PATCH v5 3/3] nvme-rdma: avoid IO error for nvme native multipath Chao Leng 2021-02-03 16:14 ` [PATCH v5 0/3] avoid double request completion and IO error Christoph Hellwig 2021-02-03 16:14 ` Christoph Hellwig 2021-02-03 22:22 ` Sagi Grimberg 2021-02-03 22:22 ` Sagi Grimberg 2021-02-04 5:56 ` Chao Leng 2021-02-04 5:56 ` Chao Leng 2021-02-04 8:04 ` Christoph Hellwig 2021-02-04 8:04 ` Christoph Hellwig 2021-02-05 2:02 ` Chao Leng 2021-02-05 2:02 ` Chao Leng
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