[LU-15084] Unsupported parameter mds_attr_cpu_bind error when updating from a 2.12 LTS release to master Created: 12/Oct/21  Updated: 12/Oct/21  Resolved: 12/Oct/21

Status: Closed
Project: Lustre
Component/s: None
Affects Version/s: Upstream
Fix Version/s: None

Type: Bug Priority: Major
Reporter: Petros Koutoupis Assignee: WC Triage
Resolution: Not a Bug Votes: 0
Labels: None

Issue Links:
Related
is related to LU-13326 remove MDS_SETATTR_PORTAL on MDS Resolved
Epic/Theme: upstream
Severity: 3
Rank (Obsolete): 9223372036854775807

 Description   

When updating from 2.12 (LTS) to latest master, I get the following unsupported parameter error:

[  495.249412] mdt: Unknown parameter `mds_attr_cpu_bind'
[  495.262504] LustreError: 158-c: Can't load module 'mdt' 

Are parameters such as these supported from one LTS to the next (i.e. 2.15)?



 Comments   
Comment by Andreas Dilger [ 12/Oct/21 ]

This attribute has done nothing since Lustre 2.1, according to my LU-13326 patch that removes it. Was there a reason this module parameter was being used?

Typically I'm on the side of maintaining compatibility, but this is totally safe to remove from the 2.12 LTS system before the upgrade without any loss of functionality, so I'm not sure what benefit there would be to keeping compatibility?

Comment by Petros Koutoupis [ 12/Oct/21 ]

@Andreas Dilger, I spoke with my team and they provided me with the history on why it was part of our configuration and why it may not have been immediately removed. Thank you for your input. I will close this issue.

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