#!/bin/bash
set -e
adt_readconfig_needkernel=y
adt_readconfig_needlock=y
. ${ADT_XENLVM_SHARE:=/usr/share/autopkgtest/xenlvm}/readconfig
test $nonoptargs = 0 || fail "non-option arguments not allowed"

$ADT_XENLVM_SHARE/purge "$@"

#----- create fs base

lvm_create_base () {
	xl lvcreate -L $3 -n $2 $1 $4
	xl lvcreate -L $6 -n $5 $1 $7
  if $8; then
    basesize=`lvdisplay -c $9 8>&- 3>&-`
    basesize="${basesize#*:*:*:*:*:*:}"
    basesize="${basesize%%:*}"
    x dd if=/dev/zero of=$9 bs=512 count="$basesize"
  fi
}	

lvm_create_base $adt_lvm_vg						\
	$adt_lvm_baselv		$adt_fs_size		$adt_lvm_pv_fsbase \
	$adt_lvm_cowdatalv	$adt_fs_snapsize	$adt_lvm_pv_fssnap \
	$adt_lvm_erasebase	$lvm_baselv_namepath	

x mkfs -t $adt_fs_type $adt_mkfs_args $lvm_baselv_namepath

#----- create swap base

if $provide_swap; then
  lvm_create_base $adt_lvm_swapvg					\
	$adt_lvm_swapbaselv	$adt_swap_size		$adt_lvm_pv_swapbase \
	$adt_lvm_swapcowdatalv	$adt_swap_snapsize	$adt_lvm_pv_swapsnap \
	$adt_lvm_eraseswap	$lvm_baselv_swapnamepath
  x mkswap $lvm_baselv_swapnamepath
  swapdisk=", \"phy:$lvm_swaplink_ptrrhs,hda2,w\""
fi

#----- create base filesystem and info

mkdir -p $adt_play/base
x mount $lvm_baselv_namepath $adt_play/base

x debootstrap								 \
	--components="${adt_debootstrap_components}"			 \
	--include=${adt_debootstrap_include},${adt_debootstrap_includemore} \
	$adt_debootstrap_opts						\
	"$adt_distro" "$adt_play/base"					\
	"$adt_debootstrap_mirrors" "$adt_debootstrap_script"		\
 |perl -pe '
 s/^(I: (?:Retrieving|Validating|Extracting|Unpacking|Configuring) [^A-Z].*)\n/
  sprintf "%-75s\r", $1
  /e
'

$ADT_XENLVM_SHARE/fixups "$@"

echo "
--- writing $adt_xmconfig ---
"

cat <<END >$adt_xmconfig
kernel = "$adt_kernel"
memory = $adt_testbed_ram
root = "/dev/hda1"
extra = "ro console=tty0 $adt_xmhook_extra"
disk = [ "phy:$lvm_fslink_ptrrhs,hda1,w"$swapdisk $adt_xmhook_disk ]
vif = [ "bridge=none,mac=$adt_guest_macaddr,ip=${adt_guest_ipaddr},script=${adt_net_vifscript}" $adt_xmhook_vif ]
on_crash = "preserve"
on_reboot = "preserve"
on_shutdown = "preserve"
$adt_xmhook_config
END

if [ "x$adt_ramdisk" != x ]; then
cat <<END >>$adt_xmconfig
ramdisk = "$adt_ramdisk"
END
fi

if [ "x$adt_setup_hook" != x ]; then
	$adt_setup_hook ${adt_play}/base
fi

x umount $lvm_baselv_namepath

for fs in fs swap; do
 swap=${fs#fs}; eval "
  mkdir -p \${lvm_${fs}link_dirpath}
  ln -sf ../\$lvm_baselv_${swap}namerhs \${lvm_${fs}link_ptr}
 "
done

x xm create $adt_xmconfig name=$adt_xmname
retries=10

if grep 0 /proc/sys/net/ipv4/ip_forward >/dev/null; then
	cat <<END

********** WARNING - IP FORWARDING IS TURNED OFF ON THE HOST **********
Your testbed will probably have trouble with downloads, DNS, etc.
You must turn this on manually, since it is a major config change.

END
fi

while true; do
	if ping -c 1 $adt_guest_ipaddr && \
	   /usr/share/autopkgtest/xenlvm/on-testbed "$@" '
		set -e; umask 002; cd /var/lib;
		mkdir -p autopkgtest; cd autopkgtest;
		touch xenlvm-created
	'; then break; fi
	if [ $retries -le 0 ]; then 
		echo >&2 'no response from guest'
		x xm console $adt_xmname
		exit 1
	fi
	retries=$(($retries-1))
	sleep 2
done

x xm mem-set $adt_xmname $adt_freeze_ram
retries=$adt_vm_reduce_retries
while sleep 1; do
  if x xm mem-max $adt_xmname $adt_freeze_ram; then break; fi
  if [ $retries -le 0 ]; then echo >&2 'cannot reduce memory'; exit 1; fi
  retries=$(($retries-1))
done

x xm save $adt_xmname $adt_play/xen-save
rm ${lvm_fslink_ptr} ${lvm_swaplink_ptr}
touch "$adt_play/good"