Bug#1050446: nfs over rdma between debian12 client and debian11 server can cause data corruption

From	Alois Schlögl <alois.schloegl@gmail.com>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#1050446: nfs over rdma between debian12 client and debian11 server can cause data corruption
Date	2023-11-09 19:20 +0100
Message-ID	<HyhNf-4hGs-11@gated-at.bofh.it> (permalink)
References	<H6mtk-47HC-9@gated-at.bofh.it> <H6mtk-47HC-9@gated-at.bofh.it> <H6mtk-47HC-9@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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Severity: wishlist

We run more tests, and observed that pgrading the storage server to 
Debian12(/bookwork solves the issue.
The storage server can be accessed through rdma from debian11 and 12.

That means, the problem occurs only when the storage server is on 
debian11, the client is on debian11 mounted with proto=rdma.

This information is good enough for us, as we'll upgrade first the 
storage server.

Another workaround is to switch to proto=tcp

As this issue (proto=rdma from debian12 client to debian11 server) is 
difficult to fix and a workaround exists, I'll downgrade the severity.

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Bug#1050446: nfs over rdma between debian12 client and debian11 server can cause data corruption Alois Schlögl <alois.schloegl@gmail.com> - 2023-08-24 19:40 +0200
  Bug#1050446: nfs over rdma between debian12 client and debian11 server can cause data corruption Alois Schlögl <alois.schloegl@gmail.com> - 2023-11-09 19:20 +0100

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