Features/ConsistentNetworkDeviceNaming

From FedoraProject

< Features(Difference between revisions)
Jump to: navigation, search
(Comments and Discussion)
Line 6: Line 6:
 
== Owner ==
 
== Owner ==
 
* Name: [[User:mdomsch| Matt Domsch]]
 
* Name: [[User:mdomsch| Matt Domsch]]
 
<!-- Include you email address that you can be reached should people want to contact you about helping with your feature, status is requested, or  technical issues need to be resolved-->
 
 
* Email: Matt_Domsch@dell.com
 
* Email: Matt_Domsch@dell.com
  
Line 14: Line 12:
 
* Last updated: 2010-11-13
 
* Last updated: 2010-11-13
 
* Percentage of completion: 75%
 
* Percentage of completion: 75%
 
<!-- CHANGE THE "FedoraVersion" TEMPLATES ABOVE TO PLAIN NUMBERS WHEN YOU COMPLETE YOUR PAGE. -->
 
  
 
== Detailed Description ==
 
== Detailed Description ==
Line 24: Line 20:
 
* ensure postinstall udev uses biosdevname in udev rules to name LAN-on-Motherboard network ports from ethX to lom[1234] (Done)
 
* ensure postinstall udev uses biosdevname in udev rules to name LAN-on-Motherboard network ports from ethX to lom[1234] (Done)
 
* have kickstart / anaconda use the biosdevname-provided name lom[1234] (TBD)
 
* have kickstart / anaconda use the biosdevname-provided name lom[1234] (TBD)
 
  
 
== Benefit to Fedora ==
 
== Benefit to Fedora ==
Line 30: Line 25:
  
 
This is only known to affect Dell PowerEdge 10G and newer servers, and HP 5G and newer servers, that expose network port labels in SMBIOS.
 
This is only known to affect Dell PowerEdge 10G and newer servers, and HP 5G and newer servers, that expose network port labels in SMBIOS.
 
  
 
== Scope ==
 
== Scope ==
see above
+
* See above
  
 
== How To Test ==
 
== How To Test ==
Line 59: Line 53:
  
 
== Release Notes ==
 
== Release Notes ==
<!-- The Fedora Release Notes inform end-users about what is new in the release.  Examples of past release notes are here: http://docs.fedoraproject.org/release-notes/ -->
 
<!-- The release notes also help users know how to deal with platform changes such as ABIs/APIs, configuration or data file formats, or upgrade concerns.  If there are any such changes involved in this feature, indicate them here.  You can also link to upstream documentation if it satisfies this need.  This information forms the basis of the release notes edited by the documentation team and shipped with the release. -->
 
 
* LAN-on-Motherboard ports on Dell PowerEdge 10G and newer servers, and HP ProLiant 5G and newer servers, will be named lomX rather than ethX, corresponding to the chassis labels.  Add-in network cards are unaffected and remain named ethX.  Existing installations upgraded to Fedora 15 will not see a change in names unless /lib/udev/rules.d/70-persistent-net.rules is deleted.
 
* LAN-on-Motherboard ports on Dell PowerEdge 10G and newer servers, and HP ProLiant 5G and newer servers, will be named lomX rather than ethX, corresponding to the chassis labels.  Add-in network cards are unaffected and remain named ethX.  Existing installations upgraded to Fedora 15 will not see a change in names unless /lib/udev/rules.d/70-persistent-net.rules is deleted.
 
  
 
== Comments and Discussion ==
 
== Comments and Discussion ==
 
* See [[Talk:Features/ConsistentNetworkDeviceNaming]]
 
* See [[Talk:Features/ConsistentNetworkDeviceNaming]]
  
 
+
[[Category:FeatureReadyForFesco]]
[[Category:FeatureReadyForWrangler]]
+
 
<!-- When your feature page is completed and ready for review -->
 
<!-- When your feature page is completed and ready for review -->
 
<!-- remove Category:FeaturePageIncomplete and change it to Category:FeatureReadyForWrangler -->
 
<!-- remove Category:FeaturePageIncomplete and change it to Category:FeatureReadyForWrangler -->
 
<!-- After review, the feature wrangler will move your page to Category:FeatureReadyForFesco... if it still needs more work it will move back to Category:FeaturePageIncomplete-->
 
<!-- After review, the feature wrangler will move your page to Category:FeatureReadyForFesco... if it still needs more work it will move back to Category:FeaturePageIncomplete-->
 
<!-- A pretty picture of the page category usage is at: https://fedoraproject.org/wiki/Features/Policy/Process -->
 
<!-- A pretty picture of the page category usage is at: https://fedoraproject.org/wiki/Features/Policy/Process -->

Revision as of 17:32, 16 November 2010

Contents

Consistent Network Device Naming

Summary

On Dell and HP servers with multiple network ports on the motherboard, name them lomX rather than ethX.

Owner

Current status

  • Targeted release: Fedora 15
  • Last updated: 2010-11-13
  • Percentage of completion: 75%

Detailed Description

Systems, particularly servers, with multiple network ports, name the ports ethX in a non-deterministic order, and are therefore not useful for system administrators.

The proposal is as follows:

  • update biosdevname to upstream release 0.3.0 (Done)
  • ensure postinstall udev uses biosdevname in udev rules to name LAN-on-Motherboard network ports from ethX to lom[1234] (Done)
  • have kickstart / anaconda use the biosdevname-provided name lom[1234] (TBD)

Benefit to Fedora

System Administrators can then use BIOS-provided names, which are consistent and not arbitrarily named, for their network ports. This eliminates the confusion that non-deterministic naming brings, and eliminates the use of hard-coded MAC address based port renaming which a) is racy and error-prone, and b) introduces state into an otherwise stateless system.

This is only known to affect Dell PowerEdge 10G and newer servers, and HP 5G and newer servers, that expose network port labels in SMBIOS.

Scope

  • See above

How To Test

  • System-Under-Test must be a Dell PowerEdge 10g or newer server (PE 1950 III class, or R610 class), or HP ProLiant 380 (5G or 6G).
  • biosdevname must be installed on the target system.
  • erase /lib/udev/rules.d/70-persistent-net.rules file. This is where naming is persisted across reboots.
  • reboot the system
  • Following reboot:
    • /sbin/ifconfig -a must show LAN-on-Motherboard ports named lom[1234]
    • lom[1234] must correspond to the chassis labels. Verify using ethtool -p lom[1234] and watch the lights blink.
    • /lib/udev/rules.d/70-persistent-net.rules should now have rules for lom[1234] and should correspond to chassis labels.
  • Testing within anaconda TBD

User Experience

LAN-on-Motherboard ports will be named lom[1234] rather than ethX

Dependencies

None

Contingency Plan

None necessary, revert to previous release behaviour.

Documentation

Release Notes

  • LAN-on-Motherboard ports on Dell PowerEdge 10G and newer servers, and HP ProLiant 5G and newer servers, will be named lomX rather than ethX, corresponding to the chassis labels. Add-in network cards are unaffected and remain named ethX. Existing installations upgraded to Fedora 15 will not see a change in names unless /lib/udev/rules.d/70-persistent-net.rules is deleted.

Comments and Discussion