[BPO] ipmctl with support for CPS hardware

[Adam Borowski]

[Impact]

 * Hardware enablement of Optane DC persistent memory. The version of ipmctl in Focal supports Apache Pass and Barlow Pass DIMMs but not the new generation, Crow Pass. We got a request from an end user -- there should be no need to build such tools from source if Ubuntu can ship a backport.

[Scope]

 * The version in Jammy is good, any version 03.* includes support for CPS (with decreasing bugginess as version numbers after the point grow...); Jammy currently has 03.00.00.0423-1

 * Focal for now.

[Other Info]

 * I'm the Debian maintainer of this package; a naive backport succeeded after lowering debhelper level to 12 (as would using the debhelper=13 backport).

[Mattia Rizzolo (mapreri)]

Do you have a sponsor lined up for this? The backporters team by themselves don't do it.

[Adam Borowski (kilobyte)]

> Do you have a sponsor lined up for this?

No, I don't. It's also my first ever backport in Ubuntu.

[Mattia Rizzolo (mapreri)]

then you should prepare the change (likely in the form of a debdiff against what's currently in jammy, or an upload to a ppa) and attach it here, then subscribe the ~ubuntu-sponsors team.

(also note that we expect your backports to have been tested in the target release, I'll assume you've done that)

[Dan Streetman (ddstreet)]

@kilobyte have you been able to find a sponsor to upload for you, and also can you clarify that you tested the backport and verified it works correctly (as mentioned in comment 3)?

[Adam Borowski (kilobyte)]

@ddstreet: no, I failed to get a sponsor, despite subscribing the bug to ~ubuntu-sponsors. I may be doing something wrong as I haven't ever done such a sponsored upload to Ubuntu directly.

The code works on Focal.

[Thomas Ward (teward)]

If you can give me an extra day or two (I'm suffering from COVID right now), I can sponsor this. I'll let the other backporters handle approval, etc. but uploading the package is something that only takes a few minutes on my part. (Just need the patience - COVID is evil)

[Thomas Ward (teward)]

NACK as is. (negative acknowledgement aka "Debdiff Rejected")

You are attempting to submit a new upstream version not in the Ubuntu repositories. Unlike Debian, an Ubuntu backport requires a little more work to push this in.

Jammy has 03.00.00.0423-1. Your debdiff is for 03.00.00.0429 which is **not** available in any Ubuntu release (even the development release).

Rebase your diff against the package in Jammy (dsc link: https://launchpad.net/ubuntu/+archive/primary/+sourcefiles/ipmctl/03.00.00.0423-1/ipmctl_03.00.00.0423-1.dsc - dget this), and then re-provide your debdiff here. I'll check it for sanity before uploading.

[Mattia Rizzolo (mapreri)]

(in fact, this is not really different than debian: also debian backports require the proposed version to be available in the "next stable", to assure the upgrade path)

[Adam Borowski (kilobyte)]

vs 423

[Dan Streetman (ddstreet)]

teward were you going to sponsor this?