Cancel testing when resizing to 2T or 16T

Cancel the testing when resizing to 2T on the windows bios guest and
16T on the windows ovmf guest since they don't support to do it.
Signed-off-by: NMenghuan Li <menli@redhat.com>

qemu/tests/block_resize.py

@@ -158,6 +158,9 @@ def run(test, params, env):
             error_context.context("Extend disk to %s in guest"
                                   % block_size, logging.info)
             if os_type == 'windows':
+                max_block_size = int(params["max_block_size"])
+                if int(block_size) >= max_block_size:
+                    test.cancel("Cancel the test for more than maximum %dB disk." % max_block_size)
                 drive.extend_volume(session, mpoint)
             else:
                 utils_disk.resize_partition_linux(session, partition, str(block_size))

qemu/tests/cfg/block_hotplug.cfg

@@ -76,6 +76,9 @@
                 need_rescan = yes
                 disk_letter = I
                 disk_index = 1
+                max_block_size = 2199023255552
+                ovmf:
+                    max_block_size = 17592186044416
             virtio_scsi:
                 driver_name = vioscsi
             virtio_blk:

qemu/tests/cfg/block_resize.cfg

@@ -9,6 +9,10 @@
     disk_change_ratio = "${extend_ratio} ${shrink_ratio}"
     accept_ratio = 0.005
     md5_file = md5.dat
+    Windows:
+        max_block_size = 2199023255552
+        ovmf:
+            max_block_size = 17592186044416
     iozone_path = "WIN_UTILS:\Iozone\iozone.exe"
     iozone_option = " -azR -r 64k -n 512M -g 1G -M -I -i 0 -i 1 -b iozone.xls -f %s:\testfile"
     dd_cmd = "dd if=/dev/urandom of=%s oflag=direct bs=1M count=10"