8:44 p.m.
Re: Bug 448030 <https://bugzilla.redhat.com/show_bug.cgi?id=448030> - RFE:
create a bootable Live USB stick from the running livecd
From: Frederick Grose <fgrose(a)gmail.com>
Date: Sun, 5 Dec 2010 17:57:06 -0500
Subject: [PATCH 2/3] Support the propagation of an installed Live image
Adjust the size-checking and boot configuration code to support
propagation of an installed Live image from the running or an
attached source. Copy the livecd-iso-to-disk script to the new
installations to support continued or self propagation.
---
tools/livecd-iso-to-disk.sh | 115
++++++++++++++++++++++++++-----------------
1 files changed, 70 insertions(+), 45 deletions(-)
diff --git a/tools/livecd-iso-to-disk.sh b/tools/livecd-iso-to-disk.sh
index 9593c64..3ca4ea7 100755
--- a/tools/livecd-iso-to-disk.sh
+++ b/tools/livecd-iso-to-disk.sh
@@ -337,7 +337,7 @@ if [ $(id -u) != 0 ]; then
fi
detectsrctype() {
- if [ -e $SRCMNT/LiveOS/squashfs.img ]; then
+ if [[ -e $SRCMNT/$LIVEOS/osmin.img ]]; then
srctype=live
return
fi
@@ -575,54 +575,52 @@ if [ -n "$efi" -a ! -d $SRCMNT/EFI/boot ]; then
exitclean
fi
-# let's try to make sure there's enough room on the stick
-if [ -d $SRCMNT/LiveOS ]; then
- check=$SRCMNT/LiveOS
-else
- check=$SRCMNT
-fi
+# Let's try to make sure there's enough room on the target device.
if [[ -d $TGTMNT/$LIVEOS ]]; then
tbd=($(du -B 1M $TGTMNT/$LIVEOS))
- [[ -s $TGTMNT/$LIVEOS/$HOMEFILE ]] && \
+ if [[ -s $TGTMNT/$LIVEOS/$HOMEFILE ]] && [[ -n $keephome ]]; then
homesize=($(du -B 1M $TGTMNT/$LIVEOS/$HOMEFILE))
- ((homesize > 0)) && [[ -n $keephome ]] && ((tbd -= homesize))
+ ((tbd -= homesize))
+ fi
else
tbd=0
fi
-targets="$TGTMNT/$SYSLINUXPATH"
-if [[ -n $efi ]]; then
- targets+=" $TGTMNT/EFI/boot"
+
+if [[ live == $srctype ]]; then
+ targets="$TGTMNT/$SYSLINUXPATH"
+ [[ -n $efi ]] && targets+=" $TGTMNT/EFI/boot"
+ [[ -n $xo ]] && targets+=" $TGTMNT/boot/olpc.fth"
+ duTable=($(du -c -B 1M $targets 2> /dev/null))
+ ((tbd += ${duTable[*]: -2:1}))
fi
-duTable=($(du -c -B 1M $targets 2> /dev/null))
-((tbd += ${duTable[*]: -2:1}))
-sources="$SRCMNT/isolinux"
-[[ -n $efi ]] && sources+=" $SRCMNT/EFI/boot"
-if [[ -n $skipcompress ]]; then
- if [[ -s $SRCMNT/LiveOS/squashfs.img ]]; then
- if mount -o loop $SRCMNT/LiveOS/squashfs.img $SRCMNT; then
- livesize=($(du -B 1M --apparent-size
$SRCMNT/LiveOS/ext3fs.img))
- umount $SRCMNT
- else
- echo "WARNING: --skipcompress or --xo was specified but the
- currently-running kernel can not mount the SquashFS from the
source
- file to extract it. Instead, the compressed SquashFS will be
copied
- to the target device."
- skipcompress=""
- fi
+if [[ -n $skipcompress ]] && [[ -s $SRCMNT/$LIVEOS/squashfs.img ]]; then
+ if mount -o loop $SRCMNT/$LIVEOS/squashfs.img $SRCMNT; then
+ livesize=($(du -B 1M --apparent-size $SRCMNT/LiveOS/ext3fs.img))
+ umount $SRCMNT
+ else
+ echo "WARNING: --skipcompress or --xo was specified but the
+ currently-running kernel can not mount the SquashFS from the source
+ file to extract it. Instead, the compressed SquashFS will be copied
+ to the target device."
+ skipcompress=""
fi
- duTable=($(du -c -B 1M $sources 2> /dev/null))
+fi
+
+if [[ live == $srctype ]]; then
+ thisScriptpath=$(readlink -f "$0")
+ sources="$SRCMNT/$LIVEOS/ext3fs.img $SRCMNT/$LIVEOS/osmin.img"
+ [[ -z $skipcompress ]] && sources+=" $SRCMNT/$LIVEOS/squashfs.img"
+ sources+=" $SRCMNT/isolinux $SRCMNT/syslinux"
+ [[ -n $efi ]] && sources+=" $SRCMNT/EFI/boot"
+ duTable=($(du -c -B 1M "$thisScriptpath" $sources 2> /dev/null))
((livesize += ${duTable[*]: -2:1}))
-else
- sources+=" $check/osmin.img $check/squashfs.img"
- duTable=($(du -c -B 1M $sources 2> /dev/null))
- livesize=${duTable[*]: -2:1}
fi
freespace=($(df -B 1M --total $TGTDEV))
freespace=${freespace[*]: -2:1}
-if [ "$srctype" = "live" ]; then
+if [[ live == $srctype ]]; then
tba=$((overlaysizemb + homesizemb + livesize + swapsizemb))
if ((tba > freespace + tbd)); then
needed=$((tba - freespace - tbd))
@@ -641,7 +639,7 @@ if [ "$srctype" = "live" ]; then
printf " Space needed: %15s MiB\n\n" $needed
printf " To fit the installation on this device,
\r free space on the target, or decrease the
- \r requested size total by: %s MiB\n\n" $needed
+ \r requested size total by: %6s MiB\n\n" $needed
exitclean
fi
fi
@@ -694,17 +692,17 @@ if [ "$srctype" = "live" -a -z
"$skipcopy" ]; then
echo "Copying live image to the target device."
[ ! -d $TGTMNT/$LIVEOS ] && mkdir $TGTMNT/$LIVEOS
[ -n "$keephome" -a -f "$TGTMNT/$HOMEFILE" ] && mv
$TGTMNT/$HOMEFILE
$TGTMNT/$LIVEOS/$HOMEFILE
- if [ -n "$skipcompress" -a -f $SRCMNT/LiveOS/squashfs.img ]; then
- mount -o loop $SRCMNT/LiveOS/squashfs.img $SRCMNT || exitclean
+ if [ -n "$skipcompress" -a -f $SRCMNT/$LIVEOS/squashfs.img ]; then
+ mount -o loop $SRCMNT/$LIVEOS/squashfs.img $SRCMNT || exitclean
copyFile $SRCMNT/LiveOS/ext3fs.img $TGTMNT/$LIVEOS/ext3fs.img ||
(umount $SRCMNT ; exitclean)
umount $SRCMNT
- elif [ -f $SRCMNT/LiveOS/squashfs.img ]; then
- copyFile $SRCMNT/LiveOS/squashfs.img $TGTMNT/$LIVEOS/squashfs.img
|| exitclean
- elif [ -f $SRCMNT/LiveOS/ext3fs.img ]; then
- copyFile $SRCMNT/LiveOS/ext3fs.img $TGTMNT/$LIVEOS/ext3fs.img ||
exitclean
+ elif [ -f $SRCMNT/$LIVEOS/squashfs.img ]; then
+ copyFile $SRCMNT/$LIVEOS/squashfs.img $TGTMNT/$LIVEOS/squashfs.img
|| exitclean
+ elif [ -f $SRCMNT/$LIVEOS/ext3fs.img ]; then
+ copyFile $SRCMNT/$LIVEOS/ext3fs.img $TGTMNT/$LIVEOS/ext3fs.img ||
exitclean
fi
- if [ -f $SRCMNT/LiveOS/osmin.img ]; then
- copyFile $SRCMNT/LiveOS/osmin.img $TGTMNT/$LIVEOS/osmin.img ||
exitclean
+ if [ -f $SRCMNT/$LIVEOS/osmin.img ]; then
+ copyFile $SRCMNT/$LIVEOS/osmin.img $TGTMNT/$LIVEOS/osmin.img ||
exitclean
fi
sync
fi
@@ -720,7 +718,19 @@ if [ \( "$srctype" = "installer" -o
"$srctype" =
"netinst" \) -a -z "$skipcopy"
sync
fi
-cp $SRCMNT/isolinux/* $TGTMNT/$SYSLINUXPATH
+# Adjust syslinux sources for replication of installed images
+# between filesystem types.
+if [[ -d $SRCMNT/isolinux/ ]]; then
+ cp $SRCMNT/isolinux/* $TGTMNT/$SYSLINUXPATH
+elif [[ -d $SRCMNT/syslinux/ ]]; then
+ cp $SRCMNT/syslinux/* $TGTMNT/$SYSLINUXPATH
+ if [[ -f $SRCMNT/syslinux/extlinux.conf ]]; then
+ mv $TGTMNT/$SYSLINUXPATH/extlinux.conf \
+ $TGTMNT/$SYSLINUXPATH/isolinux.cfg
+ elif [[ -f $SRCMNT/syslinux/syslinux.cfg ]]; then
+ mv $TGTMNT/$SYSLINUXPATH/syslinux.cfg
$TGTMNT/$SYSLINUXPATH/isolinux.cfg
+ fi
+fi
BOOTCONFIG=$TGTMNT/$SYSLINUXPATH/isolinux.cfg
# Set this to nothing so sed doesn't care
BOOTCONFIG_EFI=
@@ -732,6 +742,21 @@ if [ -n "$efi" ]; then
rm -f $TGTMNT/EFI/boot/grub.conf
fi
+if [[ live == $srctype ]]; then
+ # Copy this installer script.
+ cp -fTp "$thisScriptpath" $TGTMNT/$LIVEOS/livecd-iso-to-disk &>
/dev/null
+
+ # When the source is an installed Live USB/SD image, restore the boot
config
+ # file to a base state before updating.
+ if [[ -d $SRCMNT/syslinux/ ]]; then
+ echo "Preparing boot config file."
+ sed -i -e "s/root=live:[^ ]*/root=live:CDLABEL=name/"\
+ -e "s/liveimg .* quiet/liveimg quiet/"\
+ $BOOTCONFIG $BOOTCONFIG_EFI
+ sed -i -e "s/^timeout.*$/timeout\ 100/"\
+ -e "/^totaltimeout.*$/d" $BOOTCONFIG
+ fi
+fi
echo "Updating boot config file"
# adjust label and fstype
if [ -n "$LANG" ]; then
--
1.7.3.2