#!/bin/sh
-#
# geninitrd mod: LVM
+USE_LVM=${USE_LVM:-yes}
# if we should init LVM at boot
have_lvm=no
# LVM volumes that are needed to activate
# VG for root dev
# @internal
-ROOTVG=""
+LVM_ROOTVG=""
# VG for suspend resume dev
-SUSPENDVG=""
+LVM_SUSPENDVG=""
-VGVOLUMES=""
+LVM_VGVOLUMES=""
# LVM version. Autodetected if not set.
# Values: 1|2
LVMTOOLSVERSION=
-lvm=$(find_tool $initrd_dir/lvm /sbin/initrd-lvm)
-if [ -x /sbin/lvm -a -x "$lvm" ]; then
- USE_LVM=yes
-else
- USE_LVM=no
-fi
-
# LVM devices that should not be included in vgscan on initrd.
# @internal
lvm_ignore_devices=''
+# setup geninitrd module
+# @access public
+setup_mod_lvm() {
+ lvm=$(find_tool $initrd_dir/lvm /sbin/initrd-lvm)
+
+ if [ ! -x "$lvm" ]; then
+ USE_LVM=no
+ fi
+
+ if is_yes "$USE_LVM" && [ -z "$LVMTOOLSVERSION" ]; then
+ LVMTOOLSVERSION=$(LC_ALL=C $lvm vgchange --version 2>/dev/null | awk '/LVM version:/{if ($3 >= 2) print "2"}')
+ if [ -z "$LVMTOOLSVERSION" ]; then
+ die "Can't determine LVM tools version (is /sys mounted?). Please set LVMTOOLSVERSION and rerun $PROGRAM."
+ fi
+ fi
+}
+
# return true if node is lvm node
# @param string $node device node to be examined
# @access public
return 0
fi
- /sbin/lvm lvdisplay "$node" > /dev/null 2>&1
+ $lvm lvdisplay "$node" > /dev/null 2>&1
rc=$?
if [ $rc -gt 127 ]; then
# lvdisplay terminated by signal! most likely it segfaulted.
- die "Unexpected exit from 'lvdisplay $node': $rc - are your lvm tools broken?"
+ die "Unexpected exit from '$lvm lvdisplay $node': $rc - are your lvm tools broken?"
fi
return $rc
find_modules_lvm() {
local devpath="$1"
- debug "LVM: $devpath is LVM node"
-
- if [ ! -x $lvm -o ! -x /sbin/lvdisplay -o ! -x /sbin/pvdisplay ]; then
- die "root on LVM but /sbin/lvdisplay or /sbin/pvdisplay not found. Please install lvm(2) and lvm(2)-initrd package and rerun $PROGRAM."
- fi
-
- if [ -z "$LVMTOOLSVERSION" ]; then
- LVMTOOLSVERSION=$(LC_ALL=C $lvm vgchange --version 2>/dev/null | awk '/LVM version:/{if ($3 >= 2) print "2"}')
- if [ -z "$LVMTOOLSVERSION" ]; then
- die "Can't determine LVM tools version. Please set LVMTOOLSVERSION and rerun $PROGRAM."
- fi
- fi
+ verbose "LVM: $devpath is LVM node"
local vg=$(find_lvm_vg "$devpath")
- debug "LVM VG for $devpath: $vg"
- VGVOLUMES=$(echo $VGVOLUMES $vg | tr ' ' '\n' | sort -u)
+ verbose "LVM VG for $devpath: $vg"
+ LVM_VGVOLUMES=$(echo $LVM_VGVOLUMES $vg | tr ' ' '\n' | sort -u)
local pv=$(find_lvm_pv "$vg")
- debug "LVM PV for $vg: $pv"
+ verbose "LVM PV for $vg: $pv"
PVDEVICES=$(echo $PVDEVICES $pv | tr ' ' '\n' | sort -u)
if [ -n "$PVDEVICES" ]; then
find_modules_for_devpath $device
done
else
- die "I wasn't able to find PV (via lvdisplay and pvdisplay). You can try to set PVDEVICES in /etc/sysconfig/geninitrd."
+ die "I wasn't able to find PV. You can try to set PVDEVICES in /etc/sysconfig/geninitrd."
fi
if [ "$LVMTOOLSVERSION" = "2" ]; then
die "LVM version $LVMTOOLSVERSION is not supported."
fi
- debug "LVM v$LVMTOOLSVERSION enabled"
+ verbose "LVM v$LVMTOOLSVERSION enabled"
have_lvm=yes
}
# generate initrd fragment for lvm
# @access public
initrd_gen_lvm() {
- debug "Adding LVM support to initrd"
+ if ! is_yes "$have_lvm"; then
+ return
+ fi
+
+ verbose "Adding LVM support to initrd"
inst_d /tmp /newroot
inst_exec $lvm /bin/lvm.static
if ! is_yes "$dev_mounted"; then
inst_d /dev/mapper
- mknod $DESTDIR/dev/mapper/control c 10 63
+ mknod -m 600 $DESTDIR/dev/mapper/control c 10 63
for device in $PVDEVICES; do
# if LVM on RAID then device might be copied already in gen_md
[ -e "$DESTDIR/dev/$(basename $device)" ] && continue
done
fi
- mount_tmp
+ mount_sys
if [ "$LVMTOOLSVERSION" = "1" ]; then
add_linuxrc <<-EOF
lvm vgscan -T
- for vg in $VGVOLUMES; do
+ for vg in $LVM_VGVOLUMES; do
lvm vgchange -T -a y $vg
done
EOF
else
- echo "cat /etc/lvm.conf > /tmp/lvm.conf" | add_linuxrc
- echo "global {" > "$DESTDIR/etc/lvm.conf"
- echo " locking_type = 0" >> "$DESTDIR/etc/lvm.conf"
- echo " locking_dir = \"/tmp\"" >> "$DESTDIR/etc/lvm.conf"
- echo "}" >> "$DESTDIR/etc/lvm.conf"
- echo "devices {" >> "$DESTDIR/etc/lvm.conf"
- echo " sysfs_scan=0" >> "$DESTDIR/etc/lvm.conf"
+ cat <<-EOF > "$DESTDIR/etc/lvm.conf"
+ global {
+ locking_type = 0
+ locking_dir = "/tmp"
+ }
+ devices {
+ sysfs_scan=0
+ EOF
if is_yes "$have_md"; then
- echo " md_component_detection = 1" >> "$DESTDIR/etc/lvm.conf"
+ echo " md_component_detection=1" >> "$DESTDIR/etc/lvm.conf"
fi
if is_yes "$have_dmraid" || is_yes "$have_multipath"; then
echo ' types = [ "device-mapper", 254 ]' >> "$DESTDIR/etc/lvm.conf"
echo ' filter = [' >> "$DESTDIR/etc/lvm.conf"
local dev
for dev in $lvm_ignore_devices; do
- debug "LVM v2: ignore device $dev"
+ verbose "LVM v2: ignore device $dev"
printf ' "r|^%s.*|",\n' $dev
done >> "$DESTDIR/etc/lvm.conf"
echo ']' >> "$DESTDIR/etc/lvm.conf"
fi
# XXX filter= must be on one line!
- lvm dumpconfig | awk '/filter=/' >> "$DESTDIR/etc/lvm.conf"
+ $lvm dumpconfig | awk '/filter=/' >> "$DESTDIR/etc/lvm.conf"
echo "}" >> "$DESTDIR/etc/lvm.conf"
+ echo "cat /etc/lvm.conf > /tmp/lvm.conf" | add_linuxrc
+
initrd_gen_devices
add_linuxrc <<-EOF
- export ROOTDEV=$rootdev
- export ROOTVG="$VGVOLUMES"
- export SUSPENDVG=$SUSPENDVG
+ ROOTDEV=$rootdev
+ LVM_ROOTVG="$LVM_VGVOLUMES"
+ LVM_SUSPENDVG="$LVM_SUSPENDVG"
EOF
+
+ # need awk for "s/--/-/g" subst when parsing kernel root commandline
+ busybox_applet awk
add_linuxrc <<-'EOF'
# parse rootdev from kernel commandline if it begins with /
case "$ROOT" in
/*)
+
+ # rewrite:
+ # /dev/mapper/sys-rootfs -> /dev/sys/rootfs
+ # /dev/mapper/blodnatt-blah--bleh -> /dev/blodnatt/blah-bleh
+ # /dev/mapper/vg--meaw-root -> /dev/vg-meaw/root
+ case "$ROOT" in
+ /dev/mapper/*-*)
+ # change "--" to / (as "/" is impossible in LV name)
+ local dev=$(awk -vdev="${ROOT#/dev/mapper/}" 'BEGIN{gsub(/--/, "/", dev); print dev}')
+ local VG=$(awk -vdev="$dev" 'BEGIN{split(dev, v, "-"); gsub("/", "-", v[1]); print v[1]}')
+ local LV=$(awk -vdev="$dev" 'BEGIN{split(dev, v, "-"); gsub("/", "-", v[2]); print v[2]}')
+ ROOT=/dev/$VG/$LV
+ ;;
+ esac
+
if [ "$ROOT" != "$ROOTDEV" ]; then
ROOTDEV=$ROOT
+
echo "LVM: Using 'root=$ROOTDEV' from kernel commandline"
local tmp=${ROOTDEV#/dev/}
if [ "$tmp" != "$ROOTDEV" ]; then
- ROOTVG=${tmp%/*}
- echo "LVM: Using Volume Group '$ROOTVG' for rootfs"
+ LVM_ROOTVG=${tmp%/*}
+ echo "LVM: Using Volume Group '$LVM_ROOTVG' for rootfs"
fi
fi
;;
esac
# skip duplicate VG
- if [ "$SUSPENDVG" = "$ROOTVG" ]; then
- export VGVOLUMES="$ROOTVG"
+ if [ "$LVM_SUSPENDVG" = "$LVM_ROOTVG" ]; then
+ LVM_VGVOLUMES="$LVM_ROOTVG"
else
- export VGVOLUMES="$SUSPENDVG $ROOTVG"
+ LVM_VGVOLUMES="$LVM_SUSPENDVG $LVM_ROOTVG"
fi
# disable noise from LVM accessing devices that aren't ready.
fi
export LVM_SYSTEM_DIR=/tmp
+
: 'Scanning for Volume Groups'
- lvm.static vgscan --mknodes --ignorelockingfailure 2>/dev/null
+ lvm.static vgscan --mknodes --ignorelockingfailure
: 'Activating Volume Groups'
- for vol in $VGVOLUMES; do
- lvm.static vgchange --ignorelockingfailure -a y $vol 2>/dev/null
+ for vol in $LVM_VGVOLUMES; do
+ lvm.static vgchange --ignorelockingfailure -a y $vol --noudevsync
done
+ : 'Extra call to make device nodes for non lvm2-initrd (dynamic lvm2)'
+ lvm.static vgmknodes --ignorelockingfailure
+
echo "$printk" > /proc/sys/kernel/printk
# Find out major/minor
- attrs="$(lvm.static lvdisplay --ignorelockingfailure -c $ROOTDEV 2>/dev/null)"
+ attrs="$(lvm.static lvdisplay --ignorelockingfailure -c $ROOTDEV)"
if [ "$attrs" ]; then
majmin="${attrs#*$ROOTDEV*:*:*:*:*:*:*:*:*:*:*:*}"
if [ "$majmin" != "$attrs" ]; then
if [ "$major" -a "$minor" ]; then
# Pass it to kernel
echo $((256 * $major + $minor)) > /proc/sys/kernel/real-root-dev
- else
- echo 2>&1 "Error figuring out real root device for $ROOTDEV!"
- echo 2>&1 "System will not most likely boot up! So dropping you to a shell!"
- echo 2>&1 ""
- sh
fi
+
+ debugshell
+ unset LVM_SYSTEM_DIR
EOF
fi
}
find_lvm_pv() {
local vg="$1"
- local pv=$(/sbin/vgs --noheadings -o pv_name "$vg")
+ local pv=$($lvm vgs --noheadings -o pv_name "$vg")
echo $pv
}
find_lvm_vg() {
local devnode="$1"
- local vg=$(/sbin/lvs --noheadings -o vg_name "$devnode")
+ local vg=$($lvm lvs --noheadings -o vg_name "$devnode")
echo $vg
}
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