iotests: use TEST_IMG_FILE instead of TEST_IMG in _require_large_file

We need to check that we are able to create large enough file which is
used as an export base rather than connection URL. Unfortunately, there
are cases when the TEST_IMG_FILE is not defined. We should fallback to
TEST_IMG in that case.

This problem has been detected when running
    ./check -nbd 5
The test should be able to run while it does not.

Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Kevin Wolf <kwolf@redhat.com>
CC: Hanna Reitz <hreitz@redhat.com>
CC: Eric Blake <eblake@redhat.com>
CC: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Message-ID: <20230906140917.559129-2-den@openvz.org>
Tested-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>

diff --git a/tests/qemu-iotests/common.rc b/tests/qemu-iotests/common.rc
index d145f08201cd26db6e6476674af26b3bd04b707e..95c12577dd48ef9b07d1ac0ad1533f359dea8ccb 100644 (file)
--- a/tests/qemu-iotests/common.rc
+++ b/tests/qemu-iotests/common.rc
@@ -979,10 +979,15 @@ _require_drivers()
 #
 _require_large_file()
 {
-    if ! truncate --size="$1" "$TEST_IMG"; then
+    if [ -z "$TEST_IMG_FILE" ]; then
+        FILENAME="$TEST_IMG"
+    else
+        FILENAME="$TEST_IMG_FILE"
+    fi
+    if ! truncate --size="$1" "$FILENAME"; then
         _notrun "file system on $TEST_DIR does not support large enough files"
     fi
-    rm "$TEST_IMG"
+    rm "$FILENAME"
 }
 
 # Check that a set of devices is available in the QEMU binary