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136 lines
3.5 KiB
136 lines
3.5 KiB
#!/bin/sh |
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# run lvm scan if udev has settled |
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extraargs="$*" |
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type getarg > /dev/null 2>&1 || . /lib/dracut-lib.sh |
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VGS=$(getargs rd.lvm.vg -d rd_LVM_VG=) |
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LVS=$(getargs rd.lvm.lv -d rd_LVM_LV=) |
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SNAPSHOT=$(getargs rd.lvm.snapshot -d rd_LVM_SNAPSHOT=) |
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SNAPSIZE=$(getargs rd.lvm.snapsize -d rd_LVM_SNAPSIZE=) |
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# shellcheck disable=SC2174 |
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[ -d /etc/lvm ] || mkdir -m 0755 -p /etc/lvm |
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# build a list of devices to scan |
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lvmdevs=$( |
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for f in /tmp/.lvm_scan-*; do |
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[ -e "$f" ] || continue |
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printf '%s' "${f##/tmp/.lvm_scan-} " |
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done |
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) |
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if [ ! -e /etc/lvm/lvm.conf ]; then |
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{ |
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echo 'devices {' |
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printf ' filter = [ ' |
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for dev in $lvmdevs; do |
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printf '"a|^/dev/%s$|", ' "$dev" |
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done |
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echo '"r/.*/" ]' |
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echo '}' |
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# establish LVM locking |
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if [ -n "$SNAPSHOT" ]; then |
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echo 'global {' |
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echo ' locking_type = 1' |
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echo ' use_lvmetad = 0' |
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echo '}' |
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else |
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echo 'global {' |
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echo ' locking_type = 4' |
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echo ' use_lvmetad = 0' |
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echo '}' |
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fi |
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} > /etc/lvm/lvm.conf |
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lvmwritten=1 |
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fi |
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check_lvm_ver() { |
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maj=$1 |
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min=$2 |
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ver=$3 |
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# --poll is supported since 2.2.57 |
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[ "$4" -lt "$maj" ] && return 1 |
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[ "$4" -gt "$maj" ] && return 0 |
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[ "$5" -lt "$min" ] && return 1 |
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[ "$5" -gt "$min" ] && return 0 |
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[ "$6" -ge "$ver" ] && return 0 |
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return 1 |
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} |
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# hopefully this output format will never change, e.g.: |
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# LVM version: 2.02.53(1) (2009-09-25) |
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OLDIFS=$IFS |
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IFS=. |
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# shellcheck disable=SC2046 |
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set -- $(lvm version 2> /dev/null) |
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IFS=$OLDIFS |
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maj=${1##*:} |
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min=$2 |
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sub=${3%% *} |
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sub=${sub%%\(*} |
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lvm_ignorelockingfailure="--ignorelockingfailure" |
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lvm_quirk_args="--ignorelockingfailure --ignoremonitoring" |
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check_lvm_ver 2 2 57 "$maj" "$min" "$sub" \ |
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&& lvm_quirk_args="$lvm_quirk_args --poll n" |
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if check_lvm_ver 2 2 65 "$maj" "$min" "$sub"; then |
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lvm_quirk_args=" --sysinit $extraargs" |
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fi |
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if check_lvm_ver 2 2 221 "$maj" "$min" "$sub"; then |
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lvm_quirk_args=" $extraargs" |
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unset lvm_ignorelockingfailure |
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fi |
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unset extraargs |
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export LVM_SUPPRESS_LOCKING_FAILURE_MESSAGES=1 |
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if [ -n "$SNAPSHOT" ]; then |
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# HACK - this should probably be done elsewhere or turned into a function |
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# Enable read-write LVM locking |
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sed -i -e 's/\(^[[:space:]]*\)locking_type[[:space:]]*=[[:space:]]*[[:digit:]]/\1locking_type = 1/' /etc/lvm/lvm.conf |
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# Expected SNAPSHOT format "<orig lv name>:<snap lv name>" |
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ORIG_LV=${SNAPSHOT%%:*} |
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SNAP_LV=${SNAPSHOT##*:} |
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info "Removing existing LVM snapshot $SNAP_LV" |
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lvm lvremove --force "$SNAP_LV" 2>&1 | vinfo |
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# Determine snapshot size |
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if [ -z "$SNAPSIZE" ]; then |
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SNAPSIZE=$(lvm lvs --noheadings --units m --options lv_size "$ORIG_LV") |
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info "No LVM snapshot size provided, using size of $ORIG_LV ($SNAPSIZE)" |
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fi |
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info "Creating LVM snapshot $SNAP_LV ($SNAPSIZE)" |
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lvm lvcreate -s -n "$SNAP_LV" -L "$SNAPSIZE" "$ORIG_LV" 2>&1 | vinfo |
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fi |
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if [ -n "$LVS" ]; then |
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info "Scanning devices $lvmdevs for LVM logical volumes $LVS" |
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lvm lvscan $lvm_ignorelockingfailure 2>&1 | vinfo |
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for LV in $LVS; do |
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lvm lvchange --yes -K -ay $lvm_quirk_args "$LV" 2>&1 | vinfo |
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done |
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fi |
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if [ -z "$LVS" ] || [ -n "$VGS" ]; then |
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info "Scanning devices $lvmdevs for LVM volume groups $VGS" |
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lvm vgscan $lvm_ignorelockingfailure 2>&1 | vinfo |
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lvm vgchange -ay $lvm_quirk_args $VGS 2>&1 | vinfo |
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fi |
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if [ "$lvmwritten" ]; then |
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rm -f -- /etc/lvm/lvm.conf |
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fi |
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unset lvmwritten |
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udevadm settle |
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need_shutdown
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