Bug 2230456

Summary:	NFSv4.1 client incorrectly sets up trunked connection when MDS=DS
Product:	Red Hat Enterprise Linux 9	Reporter:	Olga Kornieskaia <kolga>
Component:	kernel	Assignee:	Red Hat Kernel Manager <kernel-mgr>
kernel sub component:	NFS	QA Contact:	Red Hat Kernel QE team <kernel-qe>
Status:	NEW ---	Docs Contact:
Severity:	unspecified
Priority:	unspecified
Version:	9.3
Target Milestone:	rc
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OS:	Unspecified
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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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