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Current Path : /proc/self/root/usr/lib/dracut/modules.d/90lvm/ |
Current File : //proc/self/root/usr/lib/dracut/modules.d/90lvm/lvm_scan.sh |
#!/bin/sh # run lvm scan if udev has settled extraargs="$@" type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh VGS=$(getargs rd.lvm.vg -d rd_LVM_VG=) LVS=$(getargs rd.lvm.lv -d rd_LVM_LV=) SNAPSHOT=$(getargs rd.lvm.snapshot -d rd_LVM_SNAPSHOT=) SNAPSIZE=$(getargs rd.lvm.snapsize -d rd_LVM_SNAPSIZE=) [ -d /etc/lvm ] || mkdir -m 0755 -p /etc/lvm # build a list of devices to scan lvmdevs=$( for f in /tmp/.lvm_scan-*; do [ -e "$f" ] || continue printf '%s' "${f##/tmp/.lvm_scan-} " done ) if [ ! -e /etc/lvm/lvm.conf ]; then { echo 'devices {'; printf ' filter = [ ' for dev in $lvmdevs; do printf '"a|^/dev/%s$|", ' $dev; done; echo '"r/.*/" ]'; echo '}'; # establish LVM locking if [ -n $SNAPSHOT ]; then echo 'global {'; echo ' locking_type = 1'; echo ' use_lvmetad = 0'; echo '}'; else echo 'global {'; echo ' locking_type = 4'; echo ' use_lvmetad = 0'; echo '}'; fi } > /etc/lvm/lvm.conf lvmwritten=1 fi check_lvm_ver() { maj=$1 min=$2 ver=$3 # --poll is supported since 2.2.57 [ $4 -lt $maj ] && return 1 [ $4 -gt $maj ] && return 0 [ $5 -lt $min ] && return 1 [ $5 -gt $min ] && return 0 [ $6 -ge $ver ] && return 0 return 1 } # hopefully this output format will never change, e.g.: # LVM version: 2.02.53(1) (2009-09-25) OLDIFS=$IFS IFS=. set $(lvm version 2>/dev/null) IFS=$OLDIFS maj=${1##*:} min=$2 sub=${3%% *} sub=${sub%%\(*}; lvm_ignorelockingfailure="--ignorelockingfailure" lvm_quirk_args="--ignorelockingfailure --ignoremonitoring" check_lvm_ver 2 2 57 $maj $min $sub && \ lvm_quirk_args="$lvm_quirk_args --poll n" if check_lvm_ver 2 2 65 $maj $min $sub; then lvm_quirk_args=" --sysinit $extraargs" fi if check_lvm_ver 2 2 221 $maj $min $sub; then lvm_quirk_args=" $extraargs" unset lvm_ignorelockingfailure fi unset extraargs export LVM_SUPPRESS_LOCKING_FAILURE_MESSAGES=1 if [ -n "$SNAPSHOT" ] ; then # HACK - this should probably be done elsewhere or turned into a function # Enable read-write LVM locking sed -i -e 's/\(^[[:space:]]*\)locking_type[[:space:]]*=[[:space:]]*[[:digit:]]/\1locking_type = 1/' ${initdir}/etc/lvm/lvm.conf # Expected SNAPSHOT format "<orig lv name>:<snap lv name>" ORIG_LV=${SNAPSHOT%%:*} SNAP_LV=${SNAPSHOT##*:} info "Removing existing LVM snapshot $SNAP_LV" lvm lvremove --force $SNAP_LV 2>&1| vinfo # Determine snapshot size if [ -z "$SNAPSIZE" ] ; then SNAPSIZE=$(lvm lvs --noheadings --units m --options lv_size $ORIG_LV) info "No LVM snapshot size provided, using size of $ORIG_LV ($SNAPSIZE)" fi info "Creating LVM snapshot $SNAP_LV ($SNAPSIZE)" lvm lvcreate -s -n $SNAP_LV -L $SNAPSIZE $ORIG_LV 2>&1| vinfo fi if [ -n "$LVS" ] ; then info "Scanning devices $lvmdevs for LVM logical volumes $LVS" lvm lvscan $lvm_ignorelockingfailure 2>&1 | vinfo for LV in $LVS; do lvm lvchange --yes -K -ay $lvm_quirk_args $LV 2>&1 | vinfo done fi if [ -z "$LVS" -o -n "$VGS" ]; then info "Scanning devices $lvmdevs for LVM volume groups $VGS" lvm vgscan $lvm_ignorelockingfailure 2>&1 | vinfo lvm vgchange -ay $lvm_quirk_args $VGS 2>&1 | vinfo fi if [ "$lvmwritten" ]; then rm -f -- /etc/lvm/lvm.conf fi unset lvmwritten udevadm settle need_shutdown