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#!/sbin/openrc-run
# Copyright 1999-2015 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
depend() {
before checkfs fsck
after modules
}
start() {
local mdadm_conf mdmod_conf mods mod dev timeout device node output # devs
declare -i timeout
mdadm_conf="/etc/mdadm/mdadm.conf"
mdmod_conf="/etc/mdadm/mdmod.conf"
[ -e /etc/mdadm.conf ] && [ ! -e "$mdadm_conf" ] && mdadm_conf="/etc/mdadm.conf"
[ -e /etc/mdmod.conf ] && [ ! -e "$mdmod_conf" ] && mdmod_conf="/etc/mdmod.conf"
if [ -x /sbin/mdadm ] && [ -f "${mdadm_conf}" ]; then
mods="$( awk '/^\s*MODULE/ { print $2 }' "${mdadm_conf}" )"
#devs="$( awk '/^\s*ARRAY/ { print $2 }' "${mdadm_conf}" )"
if [ -n "${mods}" ]; then
for mod in ${mods}; do
if lsmod 2>&1 | grep -q "${mod//-/_}"; then
ebegin "Loading RAID driver ${mod}"
modprobe "${mod}"
eend ${?} "Module load failed - storage array may be unavailable" || continue
fi
dev=$( grep "^\s*MODULE" "${mdmod_conf}" |
tr -s "[:space:]" | sed 's/^ //' |
cut -d" " -f 3-
)
#
# We can't wait until all devices are present, as some of the
# physical disks they represent may be unplugged...
#
timeout=50
while [ ${timeout} -gt 0 ]; do
for device in ${dev}; do
[ -e "${device}" ] && break 2
done
[ ${timeout} -eq 50 ] && ewarn "Waiting for devices to become available ..."
timeout=$(( timeout - 1 ))
sleep 0.1 2>/dev/null || sleep 1
done
#
# ... but we still need to give things time to settle
#
sleep 1
done
fi
#
# Before we start using the RAID array, we should really set the
# IO scheduler to use on the constituent disks...
#
# This might better be done alongside hdparm, later in the boot
# sequence.
#
local ios_name ios_module ios_queue
case "${SCHEDULER}" in
as|anticipatory)
ios_name="Anticipatory"
ios_module="as"
ios_queue="anticipatory"
;;
bfq|budget)
ios_name="Budget Fair"
ios_module="bfq"
ios_queue="bfq"
;;
cfq|fair)
ios_name="Completely Fair"
ios_module="cfq"
ios_queue="cfq"
;;
deadline)
ios_name="Deadline"
ios_module="deadline"
ios_queue="deadline"
;;
*)
ios_name="Completely Fair"
ios_module="cfq"
ios_queue="cfq"
;;
esac
ebegin "Loading ${ios_name} I/O scheduler"
modprobe "${ios_module}-iosched"
eend $?
set -- discard $( grep "^\s*DEVICE\s*" "${mdadm_conf}" )
shift
while [ -n "${1}" ]; do
device="${1}"
shift
[ "${device}" = "DEVICE" ] && continue
for node in /sys/block/"${device}"/queue/scheduler; do
if [ -e "${node}" ] && grep -q "${ios_queue}" "${node}"; then
ebegin "Setting I/O scheduler for device '${device}'"
printf "${ios_queue}" > "${node}"
eend $? "Cannot install ${ios_queue} scheduler"
fi
done
done
if yesno "${ENABLENCQ}"; then
#
# Additionally, try to enble NCQ for increased performance.
# The libATA documentation says this should work...
#
set -- discard $( grep "^\s*DEVICE\s*" "${mdadm_conf}" )
shift
while [ -n "${1}" ]; do
device="${1}"
shift
[ "${device}" = "DEVICE" ] && continue
for node in /sys/block/"${device}"/device/queue_depth; do
if [ -w "${node}" ]; then
# Maximum depth should be 32, but 0xffffffff
# is the same value returned when a device is
# hot-unplugged, so that particular value is
# masked.
ebegin "Setting maximum NCQ depth for device '${device}'"
( printf "31" > "${node}" ) >/dev/null 2>&1
eend $? "NCQ unavailable"
fi
done
done
fi
fi
ebegin "Starting up RAID devices"
output="$( mdadm -As ${MDADM_ASSEMBLE_OPTS} 2>&1 )"
eend $? "${output}"
local pat="/dev/md_d*"
set -- ${pat}
if [ "$*" != "${pat}" ] ; then
ebegin "Creating RAID device partitions"
blockdev "$@"
eend $?
# wait because vgscan runs next, and we want udev to fire
sleep 1
fi
return 0
}
stop() {
local output
# XXX: Maybe drop this check ?
[ ! -e /etc/mdadm/mdadm.conf ] && [ ! -e /etc/mdadm.conf ] && return 0
ebegin "Shutting down RAID devices"
output="$( mdadm -Ss 2>&1 )"
eend $? "${output}"
}
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