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nvme: redirect commands on dying queue

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If a command send through nvme-multipath failed on a dying queue, resend it
on another path.

Signed-off-by: Chao Leng <lengchao@huawei.com>
[hch: rebased on top of the completion refactoring]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Chao Leng 2020-08-18 09:11:32 +02:00 committed by Jens Axboe
parent 1e41f3bd26
commit 5eac5f3342
1 changed files with 5 additions and 4 deletions
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9
drivers/nvme/host/core.c
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@ -274,13 +274,14 @@ static inline enum nvme_disposition nvme_decide_disposition(struct request *req)
return COMPLETE;
if (req->cmd_flags & REQ_NVME_MPATH) {
if (nvme_is_path_error(nvme_req(req)->status))
if (nvme_is_path_error(nvme_req(req)->status) ||
blk_queue_dying(req->q))
return FAILOVER;
} else {
if (blk_queue_dying(req->q))
return COMPLETE;
}
if (blk_queue_dying(req->q))
return COMPLETE;
return RETRY;
}