It's apparent that a number of distributions and their customers
remain on long-term stable kernels. We are aware of the scalability
problems and other bugs in NFSD in kernels between v5.4 and v6.1.
To address the filecache and other scalability problems in those
kernels, I'm preparing backported patches of NFSD fixes for several
popular LTS kernels. These backports are destined for the official
LTS kernel branches so that distributions can easily integrate them
into their products.
Once this effort is complete, Greg and Sasha will continue to be
responsible for backporting NFSD-related fixes from upstream into
the LTS kernels.
Here's a status update.
---
I've pushed the NFSD backports to branches in this repo:
https://git.kernel.org/pub/scm/linux/kernel/git/cel/linux.git
If you are able, I encourage you to pull these, review them or try
them out, and report any issues or successes. I'm currently using
the NFS workflows in kdevops as the testing platform, but am
planning to include other tests.
LTS v5.10.y
Testing has found two issues that were both due to patches I
applied that are not appropriate for this kernel. The patches have
been removed. You can find this series in the "nfsd-5.10.y" branch
in the above repo. Testing will continue this week.
--
Chuck Lever