Bug 2230456 - NFSv4.1 client incorrectly sets up trunked connection when MDS=DS
Summary: NFSv4.1 client incorrectly sets up trunked connection when MDS=DS
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Status: NEW
Alias: None
Product: Red Hat Enterprise Linux 9
Classification: Red Hat
Component: kernel
Version: 9.3
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: rc
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Assignee: Red Hat Kernel Manager
QA Contact: Red Hat Kernel QE team
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Blocks:
TreeView+ depends on / blocked
 
Reported: 2023-08-09 13:39 UTC by Olga Kornieskaia
Modified: 2023-08-09 13:41 UTC (History)
0 users

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System ID Private Priority Status Summary Last Updated
Red Hat Issue Tracker RHELPLAN-165100 0 None None None 2023-08-09 13:41:43 UTC

Description Olga Kornieskaia 2023-08-09 13:39:29 UTC 
Description of problem:

When an NFSv4.1 client is doing pnfs IO, it gets a layout with deviceid where data is located, then does GETDEVICEINFO where the server returns it a list of IPs over which the client can do trunking to the data server. However when MDS=DS, then client incorrectly throws away the first entry in the getdeviceinfo list and then doing IO over the other connections.

An upstream patch was submitted to fix it: "NFSv4.1: fix pnfs MDS=DS session trunking". Will update when I have a commit id.

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