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nvme: introduce "Command Aborted By host" status code 

Fix the status code of canceled requests initiated by the host according
to TP4028 (Status Code 0x371):
"Command Aborted By host: The command was aborted as a result of host
action (e.g., the host disconnected the Fabric connection)."

Also in a multipath environment, unless otherwise specified, errors of
this type (path related) should be retried using a different path, if
one is available.

Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Max Gurtovoy 2019-10-13 19:57:35 +03:00 committed by Jens Axboe
parent 59534b9d60
commit 2dc3947b53
3 changed files with 3 additions and 1 deletions
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2
drivers/nvme/host/core.c
View File

@ -298,7 +298,7 @@ bool nvme_cancel_request(struct request *req, void *data, bool reserved)
if (blk_mq_request_completed(req))
return true;
nvme_req(req)->status = NVME_SC_HOST_PATH_ERROR;
nvme_req(req)->status = NVME_SC_HOST_ABORTED_CMD;
blk_mq_complete_request(req);
return true;
}

1
drivers/nvme/host/multipath.c
View File

@ -95,6 +95,7 @@ void nvme_failover_req(struct request *req)
}
break;
case NVME_SC_HOST_PATH_ERROR:
case NVME_SC_HOST_ABORTED_CMD:
/*
* Temporary transport disruption in talking to the controller.
* Try to send on a new path.

1
include/linux/nvme.h
View File

@ -1368,6 +1368,7 @@ enum {
NVME_SC_ANA_INACCESSIBLE = 0x302,
NVME_SC_ANA_TRANSITION = 0x303,
NVME_SC_HOST_PATH_ERROR = 0x370,
NVME_SC_HOST_ABORTED_CMD = 0x371,
NVME_SC_CRD = 0x1800,
NVME_SC_DNR = 0x4000,