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#!/sbin/openrc-run
# Copyright 1999-2016 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id: a09b0efac60ad04485b1b54275adba1fc802390e $
_get_lvm_path() {
local 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
echo "${lvm_path}"
return 0
}
_need_lvmetad()
{
local lvm_path="$(_get_lvm_path)"
[ ! -x "${lvm_path}" ] && return 1
${lvm_path} dumpconfig global 2>/dev/null | grep -q 'use_lvmetad=1'
}
depend() {
local _need
before checkfs fsck
after modules device-mapper
# We may use lvmetad based on the configuration. If we added lvmetad
# support while lvm2 is running then we aren't dependent on it. For the
# more common case, if its disabled in the config we aren't dependent
# on it.
config /etc/lvm/lvm.conf
if service_started; then
_need=$(service_get_value need)
else
if _need_lvmetad; then
_need="${_need} lvmetad"
fi
fi
need sysfs ${_need}
}
dm_in_proc() {
local x
local retval
declare -i retval=0
for x in devices misc ; do
grep -qs 'device-mapper' /proc/"${x}"
retval=$(( retval + ${?} ))
done
return ${retval}
}
if [ -d /var/lock/lvm ] && [ -w /var/lock/lvm ] && ! [ -d /dev/.lvm ]; then
export lvm_config='global { locking_dir = "/var/lock/lvm" }'
else
export lvm_config='global { locking_dir = "/dev/.lvm" }'
fi
start() {
local lvm_path lvm_commands
# LVM support for /usr, /home, /opt ....
# This should be done *before* checking local
# volumes, or they never get checked.
# NOTE: Add needed modules for LVM or RAID, etc.
# to /etc/modules.autoload if needed
lvm_path="$(_get_lvm_path)" || return 1
if [ -z "${CDBOOT}" ] ; then
if [ -e /proc/modules ] && ! dm_in_proc ; then
modprobe dm-mod 2>/dev/null
fi
if [ -d /proc/lvm ] || dm_in_proc ; then
ebegin "Setting up Logical Volume Manager"
#einfo "Using configuration directive '${lvm_config}'"
# Keep stderr, for debugging
lvm_commands="#! ${lvm_path} --config '${lvm_config}'\n"
# Perform extra pvscan pass since some devices might not have been available until very recently
lvm_commands="${lvm_commands}pvscan\n"
# Now make the nodes
lvm_commands="${lvm_commands}vgscan --mknodes\n"
# And turn them on!
lvm_commands="${lvm_commands}vgchange --sysinit -a ly\n"
# Order of this is important, have to work around dash and LVM readline
printf "%b\n" "${lvm_commands}" | "${lvm_path}" /proc/self/fd/0 --config "${lvm_config}" >/dev/null
eend ${?} "Failed to setup LVM"
fi
fi
}
start_post() {
# Remember whether we needed lvmetad...
if _need_lvmetad; then
service_set_value need lvmetad
fi
}
stop() {
local lvm_path lvs vgs lvm_commands
lvm_path="$(_get_lvm_path)" || return 1
# Stop LVM2
if [ -x "${lvm_path}" ] &&
[ -f /etc/lvmtab -o -d /etc/lvm ] &&
[ -d /proc/lvm -o -n "$( grep device-mapper /proc/misc 2>/dev/null )" ]
then
vgs=$("${lvm_path}" vgs --config "${lvm_config}" -o vg_name --noheadings --nosuffix --rows 2> /dev/null | cut -d' ' -f 3-)
lvs=$("${lvm_path}" lvs --config "${lvm_config}" -o vg_name,lv_name --noheadings --nosuffix 2> /dev/null | cut -d' ' -f 3- | sed 's| |/|')
if [ -n "${vgs}" ] ; then
ebegin "Shutting down Logical Volume Manager"
#einfo "Using configuration directive '${lvm_config}'"
# Keep stderr, for debugging
lvm_commands="#! ${lvm_path} --config '${lvm_config}'\n"
lvm_commands="${lvm_commands}lvchange --sysinit -a ln ${lvs}\n"
lvm_commands="${lvm_commands}vgchange --sysinit -a ln ${vgs}\n"
# Order of this is important, have to work around dash and LVM readline
printf "%b\n" "${lvm_commands}" | "${lvm_path}" /proc/self/fd/0 --config "${lvm_config}" >/dev/null
eend ${?} "Failed (some LVs may still be required for system-essential volumes)"
fi
fi
}
# vim:ts=4
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