sw-description中要求adu-swupdate.sh需要“feature'postinstall'”，但该特性缺失。

如果您使用的是Yocto，则需要在meta-data/recipes-core/meta/meta-mender-core/recipes-mender/mender/mender_%.bbappend文件中添加以下行：

PACKAGE_PREPROCESS_FUNCS_append = " patch_sw_description_postinstall_feature "

然后，在meta-data/recipes-core/meta/meta-mender-core/files/mender/patch_sw_description_postinstall_feature.bbappend文件中添加以下内容：

FILESEXTRAPATHS_prepend := "${THISDIR}/files:"
SRC_URI += "file://patch_sw_description_postinstall_feature.patch"

最后，在meta-data/recipes-core/meta/meta-mender-core/files/mender/patch_sw_description_postinstall_feature.patch文件中添加以下内容：

--- a/meta-mender-core/classes/mender-setup.bbclass
+++ b/meta-mender-core/classes/mender-setup.bbclass
@@ -68,7 +68,7 @@ python sstate_version_map () {
 python () {
     if bb.utils.contains('DISTRO_FEATURES', 'systemd', True, False):
         d.setVar("SERVICEDIR_native", "/lib/systemd/system")
-    d.appendVar("pkg_postinst", "systemctl daemon-reload || true;")
+    d.appendVar("pkg_postinst_mender", "systemctl daemon-reload || true;")
 }
 
 # function which returns the path to the rootfs dir for a given machine. Based
@@ -148,9 +148,8 @@ do_deploy() {
 
 patch_sw_description_postinstall_feature () {
     mkdir -p ${WORKDIR}
-    sed '/\"adu-swupdate\*\" /{ :l /}/{ n; /}/!bl; /}/b; s/\(} *$\)/    feature \'postinstall\' \\\n\1/g}' ${WORKDIR}/sw-description.in > ${WORKDIR}/sw-description.in.new
-    if  ! diff ${WORKDIR}/sw-description.in.new ${WORKDIR}/sw-description.in >/dev/null
-    then
-        mv ${WORKDIR}/sw-description.in.new ${WORKDIR}/sw-description.in
-    fi
+    sed -i '/\"adu-swupdate\*