summaryrefslogtreecommitdiff
path: root/sys-fs/lvm2/files/lvm.rc-r1
blob: 3468adc90f6102f072ebeb3c0061c184d41e6bed (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
#!/sbin/openrc-run
# Copyright 1999-2020 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}"
}

_use_lvmetad() {
	local lvm_path="$(_get_lvm_path)"
	[ ! -x "${lvm_path}" ] && return 1
	${lvm_path} dumpconfig global 2>/dev/null | grep -q 'use_lvmetad=1'
}

_use_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 want 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 _want=

	if service_started ; then
		_want=$(service_get_value want)
	else
		if _use_lvmetad ; then
			_want="${_want} lvmetad"
		fi

		if _use_lvmlockd ; then
			_want="${_want} 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

	if [ -n "${_want}" ] ; then
		want ${_want}
	fi
}

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="$(_get_lvm_path)"
	if [ -z "${lvm_path}" ] ; then
		eerror "Failed to find lvm binary in /bin or /sbin!"
		return 1
	fi

	if [ -z "${CDBOOT}" ] ; then
		if [ -e /proc/modules ] && ! dm_in_proc ; then
			ebegin "Trying to load dm-mod module"
			modprobe dm-mod 2>/dev/null
			eend $?
		fi

		if [ -d /proc/lvm ] || dm_in_proc ; then
			local has_errors=0 verbose_command

			yesno "${rc_verbose}" && verbose_command=" -v"

			ebegin "Starting the Logical Volume Manager"

			if _use_lvmetad ; then
				# Extra PV find pass because some devices might not have been available until very recently
				${lvm_path} pvscan${verbose_command} --config "${config}" --cache
				[ $? -ne 0 ] && has_errors=1
			fi

			# Now make the nodes
			${lvm_path} vgscan${verbose_command} --config "${config}" --mknodes
			[ $? -ne 0 ] && has_errors=1

			# Enable all VGs
			${lvm_path} vgchange${verbose_command} --config "${config}" --sysinit --activate y
			[ $? -ne 0 ] && has_errors=1

			if _use_lvmlockd ; then
				# Start lockd VGs as required
				${lvm_path} vgchange${verbose_command} --config "${config}" --lock-start --lock-opt auto
				[ $? -ne 0 ] && has_errors=1
			fi

			eend ${has_errors} "Failed to start the Logical Volume Manager"
		fi
	fi
}

start_post() {
	local _want=
	if _use_lvmetad ; then
		_want="${_want} lvmetad"
	fi

	if _use_lvmlockd ; then
		_want="${_want} lvmlockd"
	fi

	service_set_value want "${_want}"
}

stop() {
	lvm_path="$(_get_lvm_path)"
	if [ -z "${lvm_path}" ] ; then
		eerror "Failed to find lvm binary in /bin or /sbin!"
		return 1
	fi

	# Stop LVM2
	if [ -f /etc/lvmtab -o -d /etc/lvm ] \
		&& [ -d /proc/lvm  -o "$(grep device-mapper /proc/misc 2>/dev/null)" ]
	then
		local VGS=$($lvm_path vgs --config "${config}" -o vg_name --noheadings --nosuffix --rows 2> /dev/null)
		if [ -z "${VGS}" ] ; then
			# nothing to do for us
			return 0
		fi

		local has_errors=0 verbose_command eend_cmd="eend"

		yesno "${rc_verbose}" && verbose_command=" -v"

		local msg="Failed to stop Logical Volume Manager"
		if [ "${RC_RUNLEVEL}" = shutdown ] ; then
			# failures on shutdown are non-fatal
			eend_cmd="ewend"
			msg="${msg} (possibly some LVs still needed for /usr or root)"
		fi

		ebegin "Stopping the Logical Volume Manager"

		${lvm_path} vgchange${verbose_command} --config "${config}" --sysinit --activate n
		[ $? -ne 0 ] && has_errors=1

		${eend_cmd} ${has_errors} "${msg}"
	fi

	# at this point make sure we always exit without indicating an error
	return 0
}

# vim:ts=4