[PATCH v4 14/15] iotests: prepare 245 for using filter in block-stream

[Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>]

The preliminary patch modifies the test 245 to prepare the block-stream
job for using COR-filter. The filter breaks the backing chain being
connected to the underlying node by file child link.

Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
---
 tests/qemu-iotests/245 | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/tests/qemu-iotests/245 b/tests/qemu-iotests/245
index 4f5f0bb..5bcddc4 100755
--- a/tests/qemu-iotests/245
+++ b/tests/qemu-iotests/245
@@ -896,15 +896,19 @@ class TestBlockdevReopen(iotests.QMPTestCase):
         # make hd1 read-only and block-stream requires it to be read-write
         # (Which error message appears depends on whether the stream job is
         # already done with copying at this point.)
-        self.reopen(opts, {},
+        opts = hd_opts(1)
+        opts['backing'] = hd_opts(2)
+        opts['backing']['backing'] = None
+        self.reopen(opts, {'read-only': True},
             ["Can't set node 'hd1' to r/o with copy-on-read enabled",
              "Cannot make block node read-only, there is a writer on it"])
 
         # We can't remove hd2 while the stream job is ongoing
-        opts['backing']['backing'] = None
-        self.reopen(opts, {'backing.read-only': False}, "Cannot change 'backing' link from 'hd1' to 'hd2'")
+        opts['backing'] = None
+        self.reopen(opts, {'read-only': False}, "Cannot change 'backing' link from 'hd1' to 'hd2'")
 
         # We can detach hd1 from hd0 because it doesn't affect the stream job
+        opts = hd_opts(0)
         opts['backing'] = None
         self.reopen(opts)
 
-- 
1.8.3.1