add /usr neededForBoot entry to 21.11 release notes

2022-02-23 11:49:24 -05:00
parent e93b6abd35
commit f48ff2a079
2 changed files with 14 additions and 0 deletions
@@ -1429,6 +1429,17 @@ Superuser created successfully.
          knob.
        </para>
      </listitem>
+      <listitem>
+        <para>
+          <literal>/usr</literal> will always be included in the initial
+          ramdisk. See the
+          <literal>fileSystems.&lt;name&gt;.neededForBoot</literal>
+          option. If any files exist under <literal>/usr</literal>
+          (which is not typical for NixOS), they will be included in the
+          initial ramdisk, increasing its size to a possibly problematic
+          extent.
+        </para>
+      </listitem>
    </itemizedlist>
  </section>
  <section xml:id="sec-release-21.11-notable-changes">
@@ -419,6 +419,9 @@ In addition to numerous new and upgraded packages, this release has the followin

 - The Linux kernel for security reasons now restricts access to BPF syscalls via `BPF_UNPRIV_DEFAULT_OFF=y`. Unprivileged access can be reenabled via the `kernel.unprivileged_bpf_disabled` sysctl knob.

+- `/usr` will always be included in the initial ramdisk. See the `fileSystems.<name>.neededForBoot` option.
+  If any files exist under `/usr` (which is not typical for NixOS), they will be included in the initial ramdisk, increasing its size to a possibly problematic extent.
+
 ## Other Notable Changes {#sec-release-21.11-notable-changes}