nxd-fuse is fuse package from those distribution with backported git.kernel.org/linus/ad2ba64dd489 for wendelin.core 2 to be able to fully and explicitly control OS pagecache for files that wcfs serves. This patch is very essential for wendelin.core 2.

The sources for nxd-fuse package are located in fs/fuse/ here:

https://lab.nexedi.com/kirr/linux/commits/nxd/fuse/debian/buster (Debian 10) https://lab.nexedi.com/kirr/linux/commits/nxd/fuse/debian/stretch (Debian 9) https://lab.nexedi.com/kirr/linux/commits/nxd/fuse/ubuntu/xenial (Ubuntu 16.04)

I tested the package by myself for a long time on my Debian10-based laptop via go-fuse tests and while working on wendelin.core. Ubuntu package was also tested for a long time on my KVM via manually running the same tests and, recently, via running wendelin.core 2 tests on testnode located on the same KVM. I tested Debian 9 module only briefly on my Debian 9 KVM, but given that the diff in between nxd-fuse and std/ fs/fuse/ for that kernel is essentially only git.kernel.org/linus/ad2ba64dd489, and that the debianisation was already tested well via Debian10, and that go-fuse and wendelin.core 2 tests pass, it should be ok.

The packages are built on OBS here:

https://build.opensuse.org/package/show/home:VIFIBnexedi/nxd-fuse https://build.opensuse.org/package/view_file/home:VIFIBnexedi/nxd-fuse/README

I've used vifib-kernel role as the place where to add corresponding play. Nxd-fuse is tightly related to kernel and requires reboot after installation, which, if I understood correctly, needs infrastructure internal to that role to work correctly.

/cc @rafael, @tomo, @vpelletier