generic/459: explicitly require thin_check

The lvm command can invoke the thin pool utilities as part of
managing a thin volume. It'll fail if the thin provisioning
utilities are not installed, so we need to check for its presence
before running a test.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>

common/config

@@ -196,6 +196,7 @@ export MAN_PROG="`set_prog_path man`"
 export NFS4_SETFACL_PROG="`set_prog_path nfs4_setfacl`"
 export NFS4_GETFACL_PROG="`set_prog_path nfs4_getfacl`"
 export UBIUPDATEVOL_PROG="`set_prog_path ubiupdatevol`"
+export THIN_CHECK_PROG="$(set_prog_path thin_check)"
 
 # use 'udevadm settle' or 'udevsettle' to wait for lv to be settled.
 # newer systems have udevadm command but older systems like RHEL5 don't.

tests/generic/459

@@ -63,6 +63,7 @@ _supported_os Linux
 _require_scratch_nocheck
 _require_dm_target thin-pool
 _require_command $LVM_PROG lvm
+_require_command "$THIN_CHECK_PROG" thin_check
 _require_freeze
 
 # remove previous $seqres.full before test