feat: add nfsrahead extension

This builds nfs-utils which provides a particular utility called nfsrahead. It also creates the necessary udev rule to take effect on nfs mounts.

man7.org/linux/man-pages/man5/nfsrahead.5.html

Signed-off-by: Steven Kreitzer <[email protected]>
Signed-off-by: Noel Georgi <[email protected]>

Author: buroa

.kres.yaml

@@ -36,6 +36,7 @@ spec:
     - nebula
     - newt
     - nfsd
+    - nfsrahead
     - nut-client
     - nvidia-container-toolkit-lts
     - nvidia-container-toolkit-production

Makefile

@@ -1,6 +1,6 @@
 # THIS FILE WAS AUTOMATICALLY GENERATED, PLEASE DO NOT EDIT.
 #
-# Generated on 2025-07-09T12:23:21Z by kres 1700045.
+# Generated on 2025-07-10T15:57:51Z by kres 1700045.
 
 # common variables
 
@@ -91,6 +91,7 @@ TARGETS += metal-agent
 TARGETS += nebula
 TARGETS += newt
 TARGETS += nfsd
+TARGETS += nfsrahead
 TARGETS += nut-client
 TARGETS += nvidia-container-toolkit-lts
 TARGETS += nvidia-container-toolkit-production

storage/nfsrahead/files/nfs.conf

@@ -0,0 +1,2 @@
+[nfsrahead]
+default=128

storage/nfsrahead/libevent/pkg.yaml

@@ -0,0 +1,32 @@
+name: libevent
+variant: scratch
+shell: /bin/bash
+dependencies:
+  - stage: base
+steps:
+  - sources:
+      - url: https://github.com/libevent/libevent/releases/download/release-{{ .LIBEVENT_VERSION }}-stable/libevent-{{ .LIBEVENT_VERSION }}-stable.tar.gz
+        destination: libevent.tar.gz
+        sha256: {{ .LIBEVENT_SHA256 }}
+        sha512: {{ .LIBEVENT_SHA512 }}
+    prepare:
+      - |
+        tar -xf libevent.tar.gz --strip-components=1
+        mkdir build
+        cd build
+
+        ../configure \
+            --prefix=/usr/local
+    build:
+      - |
+        cd build
+        make -j $(nproc)
+    install:
+      - |
+        cd build
+        make DESTDIR=/rootfs install
+        # we only need the libs and headers, remove everything else
+        find /rootfs/usr/local/ -type d \( -name bin -o -name sbin -o -name share \) -prune -exec rm -rf {} \;
+finalize:
+  - from: /rootfs
+    to: /rootfs

storage/nfsrahead/manifest.yaml

@@ -0,0 +1,10 @@
+version: v1alpha1
+metadata:
+  name: nfsrahead
+  version: "$VERSION"
+  author: Steve Kreitzer
+  description: |
+    This system extension provides nfsrahead, a tool to configure the readahead for NFS mounts.
+  compatibility:
+    talos:
+      version: ">= v1.2.0"