+# debugging options
+#set -x
+#set >&2
# zfs pool and file system (existing) where to create block devices
test -z "$EXTP_ZFS" && EXTP_ZFS=tmp500g/block
# on zfs destroy remove snapshots of instance disks
test -z "$EXTP_DESTROY" && EXTP_DESTROY="-r"
+
+# emulate VG configured in cluster for wrapper scripts in sbin
+test -z "$EXTP_VG" && EXTP_VG='ffzgvg'