From: Frederick Grose <fgrose@xxxxxxxxxxxxx>
commit a6cd70fc9df2d299ed4f347461c33e4824df62f0
Author: Frederick Grose <fgrose@xxxxxxxxxxxxx>
Enable read-only mounting of a persistent home.img filesystem.
Enable one to call for filesystem checking of home.img before
mounting on the next boot.
---
fedora-live-base.ks | 24 ++++++++++++++++++++++--
1 file changed, 22 insertions(+), 2 deletions(-)
diff --git a/fedora-live-base.ks b/fedora-live-base.ks
index 6c76e96..0512f67 100644
--- a/fedora-live-base.ks
+++ b/fedora-live-base.ks
@@ -116,9 +116,13 @@ mountPersistentHome() {
elif [ ! -b "\$homedev" ]; then
loopdev=\`losetup -f\`
if [ "\${homedev##/run/initramfs/live}" != "\${homedev}" ]; then
- action "Remounting live store r/w" mount -o remount,rw /run/initramfs/live
+ if [ "\$liverw" = rw ]; then
+ action "Remounting live store r/w" mount -o remount,rw /run/initramfs/live
+ else
+ opts="-r"
+ fi
fi
- losetup \$loopdev \$homedev
+ losetup \$opts \$loopdev \$homedev
homedev=\$loopdev
fi
@@ -130,6 +134,22 @@ mountPersistentHome() {
homedev=/dev/mapper/EncHome
fi
+ # If read-only is requested, prepare a non-persistent overlay and snapshot target.
+ if [ "\$opts" = "-r" ]; then
+ dd if=/dev/null of=/run/initramfs/overlayfs/home_overlay bs=1024 count=1 seek=\$((512*1024)) 2> /dev/null
+ HOME_OVERLAY_LOOPDEV=\$(losetup -f)
+ losetup \$HOME_OVERLAY_LOOPDEV /run/initramfs/overlayfs/home_overlay
+ sz=\$(blockdev --getsz \$homedev)
+ echo 0 \$sz snapshot \$homedev \$HOME_OVERLAY_LOOPDEV N 8 | dmsetup create home-rw
+ homedev=/dev/mapper/home-rw
+ fi
+
+ # Check the filesystem, if requested.
+ if [ -e /forcehomefsck ]; then
+ e2fsck -f -y -v \$homedev || e2fsck -f -y \$homedev
+ rm /forcehomefsck
+ fi
+
# and finally do the mount
mount \$mountopts \$homedev /home
# if we have /home under what's passed for persistent home, then
--
1.8.3.1
--
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