[Bug 1948626] Re: [SRU] Ubuntu 22.04 Feature Request-Add support for a NVMe-oF-TCP CDC Client - TP 8010

Hi Michael, Sujith,

Tested NVMe/TCP initiator support with the kernel mentioned above,
whenever I do nvme connect and mount the luns ,I used to observe the
same error mentioned in the launchpad which an engineer had filed
previously related to PCI NVMe SSD.

https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1966203

But no functionality loss is seen. No other errors observed when kept
for fio stress for 24-48 Hrs.

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Title:
[SRU] Ubuntu 22.04 Feature Request-Add support for a NVMe-oF-TCP CDC
Client - TP 8010

Status in linux package in Ubuntu:
Incomplete
Status in linux source package in Jammy:
Incomplete

Bug description:
[Impact]
NVMe-oF suffers from a well-known discovery problem that fundamentally limits the size of realistic deployments. To address this discovery problem, the FMDS working group (within nvme.org) is working on two proposals that will allow NVMe-oF to be managed via a "network centric" provisioning process instead of an "end-node centric" one.
TP-8009 (https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1948625): will enable the Automated Discovery of NVMe-oF Discovery Controllers in an IP Network and will prevent an end-user from needing to manually configure the IP Address of Discovery Controllers.
TP-8010 (this launchpad): will define the concept of a Centralized Discovery Controller (CDC) and will allow end-users to manage connectivity from a single point of management on an IP Fabric by IP Fabric basis.

Here is code that implements TP8009 and TP8010:
https://github.com/martin-belanger/nvme-stas/ which now got pulled into upstream - https://github.com/linux-nvme/nvme-stas

[Fix]
1. Update kernel with TP8010 kernel patches:

a.
https://git.infradead.org/git/nvme.git/commit/647b2e01fb2d3394090ed11d1b5238157c52f907

b.
https://git.infradead.org/git/nvme.git/commit/de87c02ea9b4d93d1114b912b621ead81f6738e0

c.
 nvme: add CNTRLTYPE definitions for 'identify controller
https://lore.kernel.org/all/66FC4F03-ED5C-4727-BA94-C23DAF7D6D76@oracle.com/
[Test Case]

[Other Info]
https://code.launchpad.net/~mreed8855/ubuntu/+source/linux/+git/jammy/+ref/nvme_tcp_patches_2

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