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|
#!/bin/bash
set -eux
THIS_DIR=$(cd $(dirname "$0") && pwd)
COMM_DIR="$THIS_DIR/../common"
# xapi functions
. $COMM_DIR/functions
action="$1"
vm="$2"
device="${3-0}"
part="${4-}"
function xe_min() {
local cmd="$1"
shift
xe "$cmd" --minimal "$@"
}
function run_udev_settle() {
which_udev=$(which udevsettle) || true
if [ -n "$which_udev" ]; then
udevsettle
else
udevadm settle
fi
}
vm_uuid=$(xe_min vm-list name-label="$vm")
vdi_uuid=$(xe_min vbd-list params=vdi-uuid vm-uuid="$vm_uuid" \
userdevice="$device")
dom0_uuid=$(get_current_dom0_uuid)
function get_mount_device() {
vbd_uuid=$1
dev=$(xe_min vbd-list params=device uuid="$vbd_uuid")
if [[ "$dev" =~ "sm/" || "$dev" =~ "blktap-2/" ]]; then
DEBIAN_FRONTEND=noninteractive \
apt-get --option "Dpkg::Options::=--force-confold" --assume-yes \
install kpartx &> /dev/null || true
mapping=$(kpartx -av "/dev/$dev" | sed -ne 's,^add map \([a-z0-9\-]*\).*$,\1,p' | sed -ne "s,^\(.*${part}\)\$,\1,p")
if [ -z "$mapping" ]; then
echo "Failed to find mapping"
exit -1
fi
local device="/dev/mapper/${mapping}"
for (( i = 0; i < 5; i++ )) ; do
if [ -b $device ] ; then
echo $device
return
fi
sleep 1
done
echo "ERROR: timed out waiting for dev-mapper"
exit 1
else
echo "/dev/$dev$part"
fi
}
function clean_dev_mappings() {
dev=$(xe_min vbd-list params=device uuid="$vbd_uuid")
if [[ "$dev" =~ "sm/" || "$dev" =~ "blktap-2/" ]]; then
kpartx -dv "/dev/$dev"
fi
}
function open_vdi() {
vbd_uuid=$(xe vbd-create vm-uuid="$dom0_uuid" vdi-uuid="$vdi_uuid" \
device=autodetect)
mp=$(mktemp -d)
xe vbd-plug uuid="$vbd_uuid"
run_udev_settle
mount_device=$(get_mount_device "$vbd_uuid")
mount "$mount_device" "$mp"
echo "Your vdi is mounted at $mp"
}
function close_vdi() {
vbd_uuid=$(xe_min vbd-list vm-uuid="$dom0_uuid" vdi-uuid="$vdi_uuid")
mount_device=$(get_mount_device "$vbd_uuid")
run_udev_settle
umount "$mount_device"
clean_dev_mappings
xe vbd-unplug uuid=$vbd_uuid
xe vbd-destroy uuid=$vbd_uuid
}
if [ "$action" == "open" ]; then
open_vdi
elif [ "$action" == "close" ]; then
close_vdi
fi
|
