man/systemd-fsck@.service: clarify passno and noauto combination in /etc/fstab

Fixes #28657

diff --git a/man/systemd-fsck@.service.xml b/man/systemd-fsck@.service.xml
index 403286829e1e7ec4efd7769c70df54d8c28308af..45104bb12add3f7d1ade44caff411456a0edd644 100644 (file)
--- a/man/systemd-fsck@.service.xml
+++ b/man/systemd-fsck@.service.xml
@@ -41,12 +41,11 @@
     filesystem was not checked in the initrd. <filename>systemd-fsck@.service</filename> is used for all
     other file systems and for the root file system in the initrd.</para>
 
-    <para>These services are started at boot if
-    <option>passno</option> in <filename>/etc/fstab</filename> for the
-    file system is set to a value greater than zero. The file system
-    check for root is performed before the other file systems. Other
-    file systems may be checked in parallel, except when they are on
-    the same rotating disk.</para>
+    <para>These services are started at boot if <option>passno</option> in <filename>/etc/fstab</filename>
+    for the file system is set to a value greater than zero, but only if it is also configured to be
+    mounted at boot (i.e. without <literal>noauto</literal> option). The file system check for root is
+    performed before the other file systems. Other file systems may be checked in parallel, except when
+    they are on the same rotating disk.</para>
 
     <para><filename>systemd-fsck</filename> does not know any details
     about specific filesystems, and simply executes file system