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128 lines
3.4 KiB
128 lines
3.4 KiB
#!/bin/sh |
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# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*- |
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# ex: ts=8 sw=4 sts=4 et filetype=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 rd_LVM_VG=) |
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LVS=$(getargs rd.lvm.lv rd_LVM_LV=) |
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SNAPSHOT=$(getargs rd.lvm.snapshot rd_LVM_SNAPSHOT=) |
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SNAPSIZE=$(getargs rd.lvm.snapsize rd_LVM_SNAPSIZE=) |
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[ -d /etc/lvm ] || mkdir -m 0755 -p /etc/lvm |
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# build a list of devices to scan |
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lvmdevs=$( |
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for f in /tmp/.lvm_scan-*; do |
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[ -e "$f" ] || continue |
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echo -n "${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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echo -n ' 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 '}'; |
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else |
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echo 'global {'; |
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echo ' locking_type = 4'; |
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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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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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check_lvm_ver 2 2 57 $maj $min $sub && \ |
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nopoll="--poll n" |
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if check_lvm_ver 2 2 65 $maj $min $sub; then |
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sysinit=" --sysinit $extraargs" |
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fi |
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unset extraargs |
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export LVM_SUPPRESS_LOCKING_FAILURE_MESSAGES=1 |
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if [ -n "$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/' ${initdir}/etc/lvm/lvm.conf |
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# Expected SNAPSHOT format "<orig lv name>:<snap lv name>" |
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ORIG_LV=${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 $LVS" |
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lvm lvscan --ignorelockingfailure 2>&1 | vinfo |
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if [ -z "$sysinit" ]; then |
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lvm lvchange -ay --ignorelockingfailure $nopoll --ignoremonitoring $LVS 2>&1 | vinfo |
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else |
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lvm lvchange -ay $sysinit $LVS 2>&1 | vinfo |
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fi |
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fi |
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if [ -z "$LVS" -o -n "$VGS" ]; then |
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info "Scanning devices $lvmdevs for LVM volume groups $VGS" |
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lvm vgscan --ignorelockingfailure 2>&1 | vinfo |
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if [ -z "$sysinit" ]; then |
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lvm vgchange -ay --ignorelockingfailure $nopoll --ignoremonitoring $VGS 2>&1 | vinfo |
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else |
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lvm vgchange -ay $sysinit $VGS 2>&1 | vinfo |
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fi |
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fi |
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if [ "$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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