refactor storage-device
This commit is contained in:
illiliti
parent
640ff670cf
commit
34f5adb14c
@ -43,5 +43,5 @@ Exceptions:
|
||||
The "mdev.conf" configuration file is modified version from "mdev-like-a-boss" project, Copyright (c) 2012-2020, Piotr Karbowski <piotr.karbowski@gmail.com>.
|
||||
Please consult the license notice in the file for terms and conditions.
|
||||
|
||||
The "storage-device" script from "mdev-like-a-boss" project, Copyright (c) 2012-2020, Piotr Karbowski <piotr.karbowski@gmail.com>.
|
||||
The "storage-device" script is modified version from "mdev-like-a-boss" project, Copyright (c) 2012-2020, Piotr Karbowski <piotr.karbowski@gmail.com>.
|
||||
Please consult the license notice in the file for terms and conditions.
|
||||
|
||||
@ -38,26 +38,27 @@
|
||||
|
||||
umask 077
|
||||
|
||||
storage_dir="/dev/.mdev-like-a-boss"
|
||||
[ -d "${storage_dir}" ] || mkdir "${storage_dir}"
|
||||
# TODO use /tmp
|
||||
storage_dir="/tmp/.mdev-like-a-boss"
|
||||
[ -d "$storage_dir" ] || mkdir "$storage_dir"
|
||||
|
||||
[ "${MDEV}" ] || exit 2
|
||||
[ "$MDEV" ] || exit 2
|
||||
|
||||
create_uuid_label_symlink() {
|
||||
local target_dir="/dev/disk/by-${1}"
|
||||
local target_symlink="${target_dir}/${2}"
|
||||
[ -e "${target_symlink}" ] && return
|
||||
mkdir -p "${target_dir}"
|
||||
ln -snf "/dev/${MDEV}" "${target_symlink}"
|
||||
echo "${target_symlink}" >"${storage_dir}/storage_symlink_${1}_${MDEV}"
|
||||
target_dir="/dev/disk/by-${1}"
|
||||
target_symlink="${target_dir}/${2}"
|
||||
[ -e "$target_symlink" ] && return
|
||||
mkdir -p "$target_dir"
|
||||
ln -sf "/dev/${MDEV}" "$target_symlink"
|
||||
printf "%s\n" "$target_symlink" > "${storage_dir}/storage_symlink_${1}_${MDEV}"
|
||||
}
|
||||
|
||||
add_symlinks() {
|
||||
# Skip temp cryptsetup nodes.
|
||||
case "${MDEV}" in
|
||||
'dm-'[0-9]*)
|
||||
case "$MDEV" in
|
||||
"dm-"[0-9]*)
|
||||
case "$(cat "/sys/block/${MDEV}/dm/name")" in
|
||||
'temporary-cryptsetup-'[0-9]*)
|
||||
"temporary-cryptsetup-"[0-9]*)
|
||||
return 0
|
||||
;;
|
||||
esac
|
||||
@ -65,26 +66,31 @@ add_symlinks() {
|
||||
esac
|
||||
|
||||
if command -v blkid > /dev/null 2>&1; then
|
||||
local field name value UUID LABEL TYPE PTTYPE PARTUUID
|
||||
local blkid_output="$(blkid "/dev/${MDEV}")"
|
||||
blkid_output=$(blkid "/dev/${MDEV}")
|
||||
eval "${blkid_output#*: }"
|
||||
|
||||
[ "${UUID}" ] && create_uuid_label_symlink 'uuid' "${UUID}"
|
||||
[ "${LABEL}" ] && create_uuid_label_symlink 'label' "${LABEL}"
|
||||
[ "${PARTUUID}" ] && create_uuid_label_symlink 'partuuid' "${PARTUUID}"
|
||||
[ "$UUID" ] && create_uuid_label_symlink uuid "$UUID"
|
||||
[ "$LABEL" ] && create_uuid_label_symlink label "$LABEL"
|
||||
[ "$PARTUUID" ] && create_uuid_label_symlink partuuid "$PARTUUID"
|
||||
fi
|
||||
|
||||
if [ -f "/sys/block/${MDEV}/dm/name" ]; then
|
||||
[ -d '/dev/mapper' ] || mkdir '/dev/mapper'
|
||||
if ! [ -c '/dev/mapper/control' ]; then
|
||||
awk '$2 == "device-mapper" { foo = system("mknod /dev/mapper/control c 10 " $1); exit foo }' /proc/misc || exit 1
|
||||
[ -d /dev/mapper ] || mkdir /dev/mapper
|
||||
if ! [ -c /dev/mapper/control ]; then
|
||||
#awk '$2 == "device-mapper" { foo = system("mknod /dev/mapper/control c 10 " $1); exit foo }' /proc/misc || exit 1
|
||||
while read -r dm; do
|
||||
[ "${dm#* }" = device-mapper ] && {
|
||||
mknod /dev/mapper/control c 10 "${dm% *}" || exit 1
|
||||
}
|
||||
done < /proc/misc
|
||||
fi
|
||||
local dmname="$(cat "/sys/block/${MDEV}/dm/name")"
|
||||
if [ "${dmname}" ]; then
|
||||
local target_symlink="/dev/mapper/${dmname}"
|
||||
[ -e "${target_symlink}" ] && return
|
||||
ln -snf "/dev/${MDEV}" "${target_symlink}"
|
||||
echo "${target_symlink}" >"${storage_dir}/storage_symlink_mapper_${MDEV}"
|
||||
|
||||
dmname=$(cat "/sys/block/${MDEV}/dm/name")
|
||||
if [ "$dmname" ]; then
|
||||
target_symlink="/dev/mapper/${dmname}"
|
||||
[ -e "$target_symlink" ] && return
|
||||
ln -sf "/dev/${MDEV}" "$target_symlink"
|
||||
printf "%s\n" "$target_symlink" > "${storage_dir}/storage_symlink_mapper_${MDEV}"
|
||||
fi
|
||||
fi
|
||||
}
|
||||
@ -92,37 +98,37 @@ add_symlinks() {
|
||||
set_readahead() {
|
||||
read_ahead_kb_control="/sys/class/block/${MDEV}/queue/read_ahead_kb"
|
||||
new_read_ahead_kb="2048"
|
||||
if [ -f "${read_ahead_kb_control}" ]; then
|
||||
read_ahead_kb="$(cat "${read_ahead_kb_control}")"
|
||||
if [ "${read_ahead_kb}" -lt "${new_read_ahead_kb}" ]; then
|
||||
logger -t mdev "Changing ${MDEV} read_ahead_kb from ${read_ahead_kb} to ${new_read_ahead_kb}"
|
||||
echo -n "${new_read_ahead_kb}" >"${read_ahead_kb_control}"
|
||||
|
||||
if [ -f "$read_ahead_kb_control" ]; then
|
||||
read_ahead_kb=$(cat "$read_ahead_kb_control")
|
||||
if [ "$read_ahead_kb" -lt "$new_read_ahead_kb" ]; then
|
||||
logger -t mdev "Changing $MDEV read_ahead_kb from $read_ahead_kb to $new_read_ahead_kb"
|
||||
printf "%s" "$new_read_ahead_kb" > "$read_ahead_kb_control"
|
||||
fi
|
||||
fi
|
||||
}
|
||||
|
||||
drop_symlinks() {
|
||||
local type
|
||||
for type in uuid label mapper; do
|
||||
[ -f "${storage_dir}/storage_symlink_${type}_${MDEV}" ] || continue
|
||||
local target_symlink="$(cat "${storage_dir}/storage_symlink_${type}_${MDEV}" 2>/dev/null)"
|
||||
[ "${target_symlink}" ] || continue
|
||||
target_symlink=$(cat "${storage_dir}/storage_symlink_${type}_${MDEV}" 2> /dev/null)
|
||||
[ "$target_symlink" ] || continue
|
||||
|
||||
local target_symlink_device="$(readlink "${target_symlink}")"
|
||||
if [ "${target_symlink_device}" = "/dev/${MDEV}" ]; then
|
||||
rm "${target_symlink}"
|
||||
target_symlink_device=$(readlink "$target_symlink")
|
||||
if [ "$target_symlink_device" = "/dev/${MDEV}" ]; then
|
||||
rm "$target_symlink"
|
||||
fi
|
||||
|
||||
rm "${storage_dir}/storage_symlink_${type}_${MDEV}"
|
||||
done
|
||||
}
|
||||
|
||||
case "${ACTION}" in
|
||||
'add'|'')
|
||||
case "$ACTION" in
|
||||
add | "")
|
||||
add_symlinks
|
||||
set_readahead
|
||||
;;
|
||||
'remove')
|
||||
remove)
|
||||
drop_symlinks
|
||||
;;
|
||||
esac
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user