From: Hannes Reinecke hare@suse.de
[ Upstream commit dd8f7fa908f66dd44abcd83cbb50410524b9f8ef ]
If ANA is enabled but no ANA group descriptor is found when creating a new namespace the ANA log is most likely out of date, so trigger a re-read. The namespace will be tagged with the NS_ANA_PENDING flag to exclude it from path selection until the ANA log has been re-read.
Fixes: 32acab3181c7 ("nvme: implement multipath access to nvme subsystems") Reported-by: Martin George marting@netapp.com Signed-off-by: Hannes Reinecke hare@suse.de Reviewed-by: Keith Busch kbusch@kernel.org Reviewed-by: Sagi Grimberg sagi@grimberg.me Signed-off-by: Christoph Hellwig hch@lst.de Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/nvme/host/multipath.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c index a1d476e1ac02..ec1e454848e5 100644 --- a/drivers/nvme/host/multipath.c +++ b/drivers/nvme/host/multipath.c @@ -668,6 +668,10 @@ void nvme_mpath_add_disk(struct nvme_ns *ns, struct nvme_id_ns *id) if (desc.state) { /* found the group desc: update */ nvme_update_ns_ana_state(&desc, ns); + } else { + /* group desc not found: trigger a re-read */ + set_bit(NVME_NS_ANA_PENDING, &ns->flags); + queue_work(nvme_wq, &ns->ctrl->ana_work); } } else { ns->ana_state = NVME_ANA_OPTIMIZED;