79 lines
1.7 KiB
Bash
79 lines
1.7 KiB
Bash
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#!/bin/bash
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#%stage: volumemanager
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#%depends: evms
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#%programs: /sbin/vgscan /sbin/vgchange /sbin/lvm
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#%modules: linear
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#%if: -n "$root_lvm2"
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#
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##### LVM (Logical Volume Management)
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##
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## This activates and waits for an LVM.
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##
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## Command line parameters
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## -----------------------
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##
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## root_lvm2=1 use LVM
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## root=/dev/mapper/... use this device as Volume Group
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## vg_roots use this group as Volume Group
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##
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lvm2_get_vg() {
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local param=$1
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local vg_root vg_name
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local sysdev
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case $param in
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/dev/disk/by-*/*)
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vg_root=
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;;
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/dev/mapper/*)
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vg_name=${o##root=/dev/mapper/}
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vg_root=${vg_name%%-*}
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;;
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/dev/*)
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set -- $(IFS=/ ; echo $param)
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if [ "$#" = "3" ] ; then
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# Check sysfs. If there are subdirectories
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# matching this name it's a block device
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for d in /sys/block/$2\!* ; do
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if [ -d $d ] ; then
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sysdev=$d
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fi
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done
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# Not found in sysfs, looks like a VG then
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if [ -z "$sysdev" ] ; then
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vg_root=$2
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fi
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fi
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;;
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esac
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echo $vg_root
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}
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# load the necessary module before we initialize the raid system
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load_modules
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if [ -n "$root_lvm2" ] ; then
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o=$(get_param root)
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# Fallback if 'root=' is not specified
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[ -z "$o" ] && o=$rootdev
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vg_root=$(lvm2_get_vg $o)
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if [ "$vg_root" ] ; then
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# We are waiting for a device-mapper device
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root_major=$(sed -n 's/\(.*\) device-mapper/\1/p' /proc/devices)
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fi
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o=$(get_param resume)
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vg_resume=$(lvm2_get_vg $o)
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if [ "$vg_resume" ] ; then
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resume_major=$(sed -n 's/\(.*\) device-mapper/\1/p' /proc/devices)
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fi
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fi
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# initialize remebered and parameterized devices
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for vgr in $vg_root $vg_resume $vg_roots; do
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vgchange -a y $vgr
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done
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unset lvm2_get_vg
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