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mountroot()
{
set -x
mkdir /cdrom /btrfs
mount -t iso9660 /dev/sr0 /cdrom
mount -t btrfs -o loop,subvol=ROOT /cdrom/live/filesystem.btrfs /btrfs
modprobe brd rd_size=$((256 * 1024 * 2))
btrfs device add /dev/ram0 /btrfs
mount -o rw,remount /btrfs
mount -o move /btrfs /root
mkdir /root/cdrom
mount -o move /cdrom /root/cdrom
sed -i -e 's/^root:x:/root::/' /root/etc/passwd
samizdat_install_udev_rules
openvt -c 13 sh
sleep 100
set +x
}
samizdat_install_udev_rules()
{
mkdir -p /etc/udev/rules.d
echo 'ACTION=="add", SUBSYSTEM=="block", RUN+="/bin/grok-block $env{DEVNAME}"' \
> /etc/udev/rules.d/z00_blockdev_mountroot.rules
# 'udevadm trigger --action=add' does not work here; need to restard udevd
# first. not sure why
samizdat_restart_udev
udevadm trigger -s block --action add
}
samizdat_restart_udev()
{
mkdir -p /var/log
ps aux|grep systemd-udevd
killall systemd-udevd
/lib/systemd/systemd-udevd --resolve-names=never --debug >/var/log/udevd-systemd.log 2>&1 &
udevadm hwdb --update # rule is not executed by 'udevadm trigger' otherwise. not sure why
}
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