diff options
| author | Sagi Grimberg <sagi@grimberg.me> | 2024-04-28 12:25:40 +0300 |
|---|---|---|
| committer | Keith Busch <kbusch@kernel.org> | 2024-05-01 12:58:43 +0300 |
| commit | 505363957fad35f7aed9a2b0d8dad73451a80fb5 (patch) | |
| tree | 9001d58a8cfb109cd948308d5d0d4c0c7dd539df /drivers/nvme/target/core.c | |
| parent | 6825bdde44340c5a9121f6d6fa25cc885bd9e821 (diff) | |
| download | linux-505363957fad35f7aed9a2b0d8dad73451a80fb5.tar.xz | |
nvmet: fix nvme status code when namespace is disabled
If the user disabled a nvmet namespace, it is removed from the subsystem
namespaces list. When nvmet processes a command directed to an nsid that
was disabled, it cannot differentiate between a nsid that is disabled
vs. a non-existent namespace, and resorts to return NVME_SC_INVALID_NS
with the dnr bit set.
This translates to a non-retryable status for the host, which translates
to a user error. We should expect disabled namespaces to not cause an
I/O error in a multipath environment.
Address this by searching a configfs item for the namespace nvmet failed
to find, and if we found one, conclude that the namespace is disabled
(perhaps temporarily). Return NVME_SC_INTERNAL_PATH_ERROR in this case
and keep DNR bit cleared.
Reported-by: Jirong Feng <jirong.feng@easystack.cn>
Tested-by: Jirong Feng <jirong.feng@easystack.cn>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Diffstat (limited to 'drivers/nvme/target/core.c')
| -rw-r--r-- | drivers/nvme/target/core.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c index 8860a3eb71ec..e06013c5dace 100644 --- a/drivers/nvme/target/core.c +++ b/drivers/nvme/target/core.c @@ -437,10 +437,13 @@ void nvmet_stop_keep_alive_timer(struct nvmet_ctrl *ctrl) u16 nvmet_req_find_ns(struct nvmet_req *req) { u32 nsid = le32_to_cpu(req->cmd->common.nsid); + struct nvmet_subsys *subsys = nvmet_req_subsys(req); - req->ns = xa_load(&nvmet_req_subsys(req)->namespaces, nsid); + req->ns = xa_load(&subsys->namespaces, nsid); if (unlikely(!req->ns)) { req->error_loc = offsetof(struct nvme_common_command, nsid); + if (nvmet_subsys_nsid_exists(subsys, nsid)) + return NVME_SC_INTERNAL_PATH_ERROR; return NVME_SC_INVALID_NS | NVME_SC_DNR; } |