diff options
| author | James Smart <jsmart2021@gmail.com> | 2017-06-22 02:43:21 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2017-06-28 16:14:13 +0200 |
| commit | 69fa964632fe18a11a80ead0d09ef3399b08144a (patch) | |
| tree | 51a5bcf047795d11fe60fb7977a2037599fc5f94 /drivers/nvme | |
| parent | nvmet_fc: fix crashes on bad opcodes (diff) | |
| download | linux-69fa964632fe18a11a80ead0d09ef3399b08144a.tar.xz linux-69fa964632fe18a11a80ead0d09ef3399b08144a.zip | |
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.c | 8 |
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 " |