On Mon, Mar 26, 2012 at 12:02 PM, Frederick Grose <fgrose@gmail.com> wrote:
Please note that the current Fedora-17-Beta-TC2-Live images lacksome traditional Live CD/USB features.See this bug report./dev/live was a link to the installation partition on the Live USB, such as /dev/sdc1,or /dev/sr0 on a Live CD/DVD.How would a script determine this partition without human input?/mnt/live was a convenient mounting of the installation partition filesystem.It allowed easy access to pre-existing content on the Live USB device or tothe /LiveOS and /syslinux directories.The --home-size-mb NNN option of livecd-iso-to-disk produced a /LiveOS/home.imgfilesystem for the liveuser's home directory.This feature made possible the --encrypted-home option, which would secure the privacy of a user directory on a Live USB system.The home.img filesystem was also read/write/delete without consuming the LiveOS overlay. This is important for non-short-term Live USB deployments, such as Sugar on a Stick, where overlay exhaustion can be a significant problem.Is there a workaround for these (missing) features?--Fred
This patch restores the lost features:
commit 1580cddaea504efd68c5e10fee70e09d7e81d86b
Author: Frederick Grose <fgrose@sugarlabs.org>
Date: Thu Mar 29 16:27:30 2012 -0400
Mount live device on /mnt/live, link it to /dev/live
This enables the mounting of /LiveOS/home.img, if present.
diff --git a/fedora-live-base.ks b/fedora-live-base.ks
index 0b14fec..0cf0fb2 100644
--- a/fedora-live-base.ks
+++ b/fedora-live-base.ks
@@ -88,10 +88,22 @@ touch /.liveimg-configured
# Make sure we don't mangle the hardware clock on shutdown
ln -sf /dev/null /etc/systemd/system/hwclock-save.service
+findmount() {
+ local info=()
+ while read -a info; do
+ if [[ ${info[4]} == $1 ]]; then
+ echo ${info[8]}
+ break;
+ fi
+ done < /proc/self/mountinfo
+}
+
# mount live image
-if [ -b \`readlink -f /dev/live\` ]; then
+livedev=$(findmount /run/initramfs/live)
+if [[ -b $livedev ]]; then
mkdir -p /mnt/live
- mount -o ro /dev/live /mnt/live 2>/dev/null || mount /dev/live /mnt/live
+ mount -o ro $livedev /mnt/live 2>/dev/null || mount $livedev /mnt/live
+ ln -s $livedev /dev/live
fi
livedir="LiveOS"
@@ -220,7 +232,7 @@ if strstr "\`cat /proc/cmdline\`" CDLABEL= ; then
# io errors due to not being able to get files...
#cat /sbin/halt > /dev/null
#cat /sbin/reboot > /dev/null
-#/usr/sbin/eject -p -m \$(readlink -f /dev/live) >/dev/null 2>&1
+#/usr/sbin/eject -p -m \$livedev >/dev/null 2>&1
#echo "Please remove the CD from your drive and press Enter to finish restarting"
#read -t 30 < /dev/console
FOE
With Fedora-17.TC2-x86_64-Live-Desktop.iso we have /run/initramfs/livedev as a symlink to the block device for the source partition & /run/initramfs/live as the mount point for that filesystem. This substitute patch enables the mounting of home.img and swap.img filesystems with the substitute paths:
(Tested as applied to /etc/rc.d/init.d/livesys on an installed Live USB.)