sys-fs/lvm2: better USE=-udev init support

Package-Manager: Portage-2.3.62, Repoman-2.3.12
Signed-off-by: Robin H. Johnson <[email protected]>

sys-fs/lvm2/files/lvm.confd-2.02.184-r3

@@ -0,0 +1,9 @@
+# If LVM is built with udev, you must ensure udev is running first!
+# Otherwise it will hang
+rc_need="udev"
+
+# LVM should normally only be started after mdraid is available
+# this is because LVM physical volumes are very often MD devices.
+rc_after="mdraid"
+
+# vim: ft=gentoo-conf-d

sys-fs/lvm2/files/lvm.rc-2.02.184-r3

@@ -0,0 +1,154 @@
+#!/sbin/openrc-run
+# Copyright 1999-2019 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+_get_lvm_path() {
+	local lvm_path=
+	for lvm_path in /bin/lvm /sbin/lvm ; do
+		[ -x "$lvm_path" ] && break
+	done
+	echo "${lvm_path}"
+}
+
+_need_lvmetad()
+{
+	local lvm_path="$(_get_lvm_path)"
+	[ ! -x "${lvm_path}" ] && return 1
+	${lvm_path} dumpconfig global 2>/dev/null | grep -q 'use_lvmetad=1'
+}
+
+_need_lvmlockd()
+{
+	local lvm_path="$(_get_lvm_path)"
+	[ ! -x "${lvm_path}" ] && return 1
+	${lvm_path} dumpconfig global 2>/dev/null | grep -q 'use_lvmlockd=1'
+}
+
+depend() {
+	before checkfs fsck
+	after modules device-mapper
+	# We may use lvmetad based on the configuration. If we added lvmetad
+	# support while lvm2 is running then we aren't dependent on it. For the
+	# more common case, if its disabled in the config we aren't dependent
+	# on it.
+	config /etc/lvm/lvm.conf
+	local _need=
+	if service_started; then
+		_need=$(service_get_value need)
+	else
+		if _need_lvmetad; then
+			_need="${_need} lvmetad"
+		fi
+		if _need_lvmlockd; then
+			_need="${_need} lvmlockd"
+		fi
+	fi
+	# Make sure you review /etc/conf.d/lvm as well!
+	# Depending on your system, it might also introduce udev & mdraid
+	need sysfs ${_need}
+}
+
+config='global { locking_dir = "/run/lock/lvm" }'
+
+dm_in_proc() {
+	local retval=0
+	for x in devices misc ; do
+		grep -qs 'device-mapper' /proc/${x}
+		retval=$((${retval} + $?))
+	done
+	return ${retval}
+}
+
+start() {
+	# LVM support for /usr, /home, /opt ....
+	# This should be done *before* checking local
+	# volumes, or they never get checked.
+
+	# NOTE: Add needed modules for LVM or RAID, etc
+	#       to /etc/modules.autoload if needed
+	lvm_path="$(_get_lvm_path)"
+	for lvm_path in /bin/lvm /sbin/lvm ; do
+		[ -x "$lvm_path" ] && break
+	done
+	if [ ! -x "$lvm_path" ]; then
+		eerror "Cannot find lvm binary in /sbin or /bin!"
+		return 1
+	fi
+	if [ -z "${CDBOOT}" ] ; then
+		if [ -e /proc/modules ] && ! dm_in_proc ; then
+			modprobe dm-mod 2>/dev/null
+		fi
+		if [ -d /proc/lvm ] || dm_in_proc ; then
+			ebegin "Setting up the Logical Volume Manager"
+			#still echo stderr for debugging
+			lvm_commands="#!${lvm_path}\n"
+			# Extra PV find pass because some devices might not have been available until very recently
+			lvm_commands="${lvm_commands}pvscan --config '${config}'\n"
+			# Now make the nodes
+			lvm_commands="${lvm_commands}vgscan --config '${config}' --mknodes\n"
+			# And turn them on!
+			lvm_commands="${lvm_commands}vgchange --config '${config}' --sysinit -a ly\n"
+			if _need_lvmlockd; then
+				# Start lockd VGs as required
+				lvm_commands="${lvm_commands}vgchange --config '${config}' --lock-start --lock-opt auto\n"
+			fi
+			# Order of this is important, have to work around dash and LVM readline
+			printf "%b\n" "${lvm_commands}" | $lvm_path /proc/self/fd/0 >/dev/null
+			eend $? "Failed to setup the LVM"
+		fi
+	fi
+}
+
+start_post()
+{
+	# Save if we needed lvmetad
+	if _need_lvmetad; then
+		service_set_value need lvmetad
+	fi
+}
+
+stop() {
+	for lvm_path in /bin/lvm /sbin/lvm ; do
+		[ -x "$lvm_path" ] && break
+	done
+	if [ ! -x "$lvm_path" ]; then
+		eerror "Cannot find lvm binary in /sbin or /bin!"
+		return 1
+	fi
+
+	# Stop LVM2
+	if [ -x /sbin/vgs ] && \
+		[ -x /sbin/vgchange ] && \
+		[ -x /sbin/lvchange ] && \
+		[ -f /etc/lvmtab -o -d /etc/lvm ] && \
+		[ -d /proc/lvm  -o "`grep device-mapper /proc/misc 2>/dev/null`" ]
+	then
+		einfo "Shutting down the Logical Volume Manager"
+
+		VGS=$($lvm_path vgs --config "${config}" -o vg_name --noheadings --nosuffix --rows 2> /dev/null)
+
+		if [ "$VGS" ]
+		then
+			local _ending="eend"
+			[ "$RC_RUNLEVEL" = shutdown ] && _ending="ewend"
+			ebegin "  Shutting Down LVs & VGs"
+				#still echo stderr for debugging
+				lvm_commands="#!${lvm_path}\n"
+				# Extra PV find pass because some devices might not have been available until very recently
+				lvm_commands="${lvm_commands}lvchange --config '${config}' --sysinit -a ln ${VGS}\n"
+				# Now make the nodes
+				lvm_commands="${lvm_commands}vgchange --config '${config}' --sysinit -a ln ${VGS}\n"
+				# Order of this is important, have to work around dash and LVM readline
+				printf "%b\n" "${lvm_commands}" | $lvm_path /proc/self/fd/0 --config "${config}" >/dev/null
+			rc=$?
+			msg="Failed (possibly some LVs still needed for /usr or root)"
+			[ "$RC_RUNLEVEL" = shutdown ] && msg="${msg} [rc=$rc]" && rc=0
+			${_ending} $rc "${msg}"
+		fi
+
+		einfo "Finished shutting down the Logical Volume Manager"
+		return 0
+	fi
+}
+
+# vim:ts=4