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Bug 2182769

Summary: [RFE] Implement support for "NIC name pinning"
Product: Red Hat Enterprise Linux 9 Reporter: Colin Walters <walters>
Component: nmstateAssignee: Gris Ge <fge>
Status: CLOSED ERRATA QA Contact: Mingyu Shi <mshi>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 9.2CC: ferferna, jiji, jishi, network-qe, pamoedom, sfaye, till
Target Milestone: rcKeywords: FutureFeature, Triaged
Target Release: ---Flags: pm-rhel: mirror+
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: nmstate-2.2.10-2.el9 Doc Type: No Doc Update
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2023-11-07 08:24:02 UTC Type: Feature Request
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Colin Walters 2023-03-29 15:02:19 UTC 
Current discussion around https://issues.redhat.com/browse/OCPBUGS-10787 is leaning to shipping at least PoC code in nmstate.

Something of the form:

nmstatectl pin-nic-names 

Possibly with options like --active-only (or --ignore-inactive) or `--include-only-glob=enp*` etc.

Filing this to track work on this from the nmstate side.
Comment 3 Gris Ge 2023-04-11 12:58:11 UTC 
Patch send to upstream: https://github.com/nmstate/nmstate/pull/2306

The whole workflow:

 * Use `nmstatectl persist-nic-names` to pin __every__ ethernet interface to its
   MAC via systemd .link file.
 * After boot into new environment, `nmstatectl persist-nic-names --cleanup`
   will remove un-required systemd .link file.

Key tech point:

    Use `udevadm test-builtin net_id /sys/class/net/<iface_name>` to check
    systemd preferred interface name and compare to current interface
    name.

Tested:
 * CentOS stream 9 VM by renaming a existing interface to new name.

 * RHEL 8.8 and CentOS stream 9 on Mellanox MT27710:
    * Not from upgrade, just reinstall CentOS stream 9 and restored the
      nmstate created .link files.
Comment 10 errata-xmlrpc 2023-11-07 08:24:02 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (nmstate bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2023:6323