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nvmet-rdma automatic port re-activation

Christoph Hellwig linux-nvme 1 version New

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  1. v1 Latest2 of 3 patches 0 repliesNew

2 of 3 patches are in this archive. The cover letter announces 3.

Patches in v1 No applies recorded yet

#Subject and filesSizeRepliesApplied
3/3nvmet: Add port transport state flag+0 -01 reply
3/3nvmet: Add port transport state flag+0 -01 reply

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Cover letter [PATCH v1 0/3] nvmet-rdma automatic port re-activation
Quoted 4 lines · Sagi Grimberg

When a RDMA device goes away we must destroy all it's associated RDMA resources. RDMa device resets also manifest as device removal events and a short while after they come back. We want to re-activate a port listener on this RDMA device when it comes back in to the system.

I really detest this series. It just shows how messed up the whole IB core interaction is. The right way to fix this is to stop treating a IB device reset as a device removal, and give it a different event.

And also make sure we have a single unified event system instead of three separate ones.

Quoted 18 lines

In order to make it happen, we save the RDMA device node_guid on a ULP listener representation (nvmet_rdma_port) and when a RDMA device comes into the system, we check if there is a listener port that needs to be re-activated.

In addition, reflect the port state to the sysadmin nicely with a patch to nvmetcli.

Changes from v0 (rfc):
- renamed tractive to trstate
- trstate configfs file without addr_ prefix to prevent json serialization on it
- nvmet_rdma_port_enable_work self requeue delay was increased to 5 seconds

Israel Rukshin (2):
nvmet: Add fabrics ops to port
nvmet: Add port transport state flag

Quoted 11 lines

Sagi Grimberg (1):
nvmet-rdma: automatic listening port re-activation

 drivers/nvme/target/configfs.c |  11 ++
 drivers/nvme/target/core.c     |  17 ++-
 drivers/nvme/target/nvmet.h    |   3 +
 drivers/nvme/target/rdma.c     | 237 ++++++++++++++++++++++++++---------------
 4 files changed, 175 insertions(+), 93 deletions(-)
Signature · 1 line
2.14.1

---end quoted text---

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