feat(mdadm): configure mdadm.conf path for use with extensionconfig

storage/mdadm/files/udev-md-raid-arrays.rules

@@ -17,7 +17,7 @@ TEST!="md/array_state", GOTO="md_end"
 ATTR{md/array_state}=="clear*|inactive", GOTO="md_end"
 LABEL="md_ignore_state"
 
-IMPORT{program}="/usr/local/sbin/mdadm --detail --no-devices --export $devnode"
+IMPORT{program}="/usr/local/sbin/mdadm --detail -c /var/run/mdadm/mdadm.conf --no-devices --export $devnode"
 ENV{DEVTYPE}=="disk", ENV{MD_NAME}=="?*", SYMLINK+="disk/by-id/md-name-$env{MD_NAME}", OPTIONS+="string_escape=replace"
 ENV{DEVTYPE}=="disk", ENV{MD_UUID}=="?*", SYMLINK+="disk/by-id/md-uuid-$env{MD_UUID}"
 ENV{DEVTYPE}=="disk", ENV{MD_DEVNAME}=="?*", SYMLINK+="md/$env{MD_DEVNAME}"

storage/mdadm/files/udev-md-raid-assembly.rules

@@ -23,7 +23,7 @@ LABEL="md_inc"
 
 # remember you can limit what gets auto/incrementally assembled by
 # mdadm.conf(5)'s 'AUTO' and selectively whitelist using 'ARRAY'
-ACTION=="add|change", IMPORT{program}="/usr/local/sbin/mdadm --incremental --export $devnode --offroot $env{DEVLINKS}"
+ACTION=="add|change", IMPORT{program}="/usr/local/sbin/mdadm --incremental -c /var/run/mdadm/mdadm.conf --export $devnode --offroot $env{DEVLINKS}"
 ACTION=="remove", ENV{ID_PATH}=="?*", RUN+="/usr/local/sbin/mdadm -If $name --path $env{ID_PATH}"
 ACTION=="remove", ENV{ID_PATH}!="?*", RUN+="/usr/local/sbin/mdadm -If $name"
 

storage/mdadm/patches/change-sysconfdir.patch

@@ -0,0 +1,11 @@
+--- mdadm.orig/Makefile
++++ mdadm/Makefile
+@@ -89,7 +89,7 @@
+
+ PKG_CONFIG ?= pkg-config
+
+-SYSCONFDIR = /etc
++SYSCONFDIR = /var/run/mdadm/
+ CONFFILE = $(SYSCONFDIR)/mdadm.conf
+ CONFFILE2 = $(SYSCONFDIR)/mdadm/mdadm.conf
+ MAILCMD =/usr/sbin/sendmail -t

storage/mdadm/pkg.yaml

@@ -21,6 +21,7 @@ steps:
         patch -p1 < /pkg/patches/no-werror.patch
         patch -p1 < /pkg/patches/musl-125.patch
         patch -p1 < /pkg/patches/exit-gracefully-when-md-device-not-found.patch
+        patch -p1 < /pkg/patches/change-sysconfdir.patch
     build:
       - |
         mkdir -p /run/mdadm
@@ -35,6 +36,8 @@ steps:
         cp mdmon /rootfs/usr/local/sbin/mdmon
         cp /pkg/files/udev-md-raid-arrays.rules   /rootfs/usr/etc/udev/rules.d/63-md-raid-arrays.rules
         cp /pkg/files/udev-md-raid-assembly.rules /rootfs/usr/etc/udev/rules.d/64-md-raid-assembly.rules
+        mkdir /var/run/mdadm
+        touch /var/run/mdadm/mdadm.conf
     test:
       - |
         mkdir -p /extensions-validator-rootfs