user/mdadm: pull in from Alpine, fix up, requested by @Elizafox

1 files changed, 48 insertions, 0 deletions

diff --git a/user/mdadm/mdadm-raid.initd b/user/mdadm/mdadm-raid.initd
new file mode 100644
index 000000000..368860ae0
--- /dev/null
+++ b/user/mdadm/mdadm-raid.initd
@@ -0,0 +1,48 @@
+#!/sbin/openrc-run
+
+# script to start raid devices described in /etc/mdadm.conf.
+depend() {
+	before checkfs fsck swap
+	after modules
+}
+
+array_devices() {
+	awk '/^ARRAY/ {print $2}' /etc/mdadm.conf
+}
+
+start() {
+	[ -f /etc/mdadm.conf ] || return 0
+	# start all devices that are not already started
+	[ -f /proc/mdstat ] || modprobe md > /dev/null 2>&1
+	local tostart=
+	for i in $(array_devices); do
+		[ -b "$i" ] && continue
+		tostart="$tostart $i"
+	done
+	[ -z "$tostart" ] && return 0
+
+	ebegin "Starting RAID devices"
+	mdadm --assemble --scan --quiet $tostart
+	eend $?
+}
+
+is_mounted_as() {
+	local mnt
+	for mnt in $(awk "\$1 == \"$1\" {print \$2}" /proc/mounts); do
+		[ "$mnt" = "$2" ] && return 0
+	done
+	return 1
+}
+
+stop() {
+	# stop all raid devices except anything mounted as /
+	[ -f /etc/mdadm.conf ] || return 0
+	ebegin "Stopping RAID devices"
+	local tostop=
+	for i in $(array_devices); do
+		is_mounted_as $i / && continue
+		tostop="$tostop $i"
+	done
+	mdadm --stop --quiet $tostop
+	eend $?
+}