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authorJames Smart <jsmart2021@gmail.com>2017-06-21 17:43:21 -0700
committerJens Axboe <axboe@kernel.dk>2017-06-28 08:14:13 -0600
commit69fa964632fe18a11a80ead0d09ef3399b08144a (patch)
tree51a5bcf047795d11fe60fb7977a2037599fc5f94 /drivers/nvme
parent188f7e8a3789cb2e37b68903e0a40f406091fa97 (diff)
nvme_fc: fix error recovery on link down.
Currently, the fc transport invokes nvme_fc_error_recovery() on every io in which the transport detects an error. Which means: a) it's really noisy on large io loads that all get hit by a link down. b) we repeatively call nvme_stop_queues() even though queues are stopped upon the first error or as first steps of reset_work. Correct by: Errors are only meaningful if the controller is in the LIVE state. Thus, enact the reset_work only if LIVE. If called repeatively, state will have already transitioned. There's no need to stop the queues here. Let the first steps of reset_work do the queue stopping. Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/nvme')
-rw-r--r--drivers/nvme/host/fc.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c
index 9444495343ac..ed87214fdc0e 100644
--- a/drivers/nvme/host/fc.c
+++ b/drivers/nvme/host/fc.c
@@ -1749,16 +1749,16 @@ nvme_fc_nvme_ctrl_freed(struct nvme_ctrl *nctrl)
static void
nvme_fc_error_recovery(struct nvme_fc_ctrl *ctrl, char *errmsg)
{
+ /* only proceed if in LIVE state - e.g. on first error */
+ if (ctrl->ctrl.state != NVME_CTRL_LIVE)
+ return;
+
dev_warn(ctrl->ctrl.device,
"NVME-FC{%d}: transport association error detected: %s\n",
ctrl->cnum, errmsg);
dev_warn(ctrl->ctrl.device,
"NVME-FC{%d}: resetting controller\n", ctrl->cnum);
- /* stop the queues on error, cleanup is in reset thread */
- if (ctrl->queue_count > 1)
- nvme_stop_queues(&ctrl->ctrl);
-
if (!nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_RECONNECTING)) {
dev_err(ctrl->ctrl.device,
"NVME-FC{%d}: error_recovery: Couldn't change state "