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

To: 1050446@bugs.debian.org
Subject: Bug#1050446: nfs over rdma between debian12 client and debian11 server can cause data corruption
From: Alois Schlögl <alois.schloegl@gmail.com>
Date: Thu, 9 Nov 2023 19:12:07 +0100
Message-id: <[🔎] 1d163247-905f-4c01-a8fb-60cbce9dd9b1@gmail.com>
Reply-to: Alois Schlögl <alois.schloegl@gmail.com>, 1050446@bugs.debian.org
In-reply-to: <b9e3d214-be0c-c84a-3c25-4678dc34a4bd@gmail.com>
References: <b9e3d214-be0c-c84a-3c25-4678dc34a4bd@gmail.com> <b9e3d214-be0c-c84a-3c25-4678dc34a4bd@gmail.com> <b9e3d214-be0c-c84a-3c25-4678dc34a4bd@gmail.com>


Severity: wishlist

We run more tests, and observed that pgrading the storage server toDebian12(/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 ondebian11, the client is on debian11 mounted with proto=rdma.

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


Another workaround is to switch to proto=tcp

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

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