Hello, I do see spurious failures of 161 in our CI, but only when I use make check with parallelism (-j). I have not yet figured out which other testcase could interfere
@@ -34,6 +34,8 @@ *** Commit and then change an option on the backing file Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=1048576 +qemu-img: TEST_DIR/t.IMGFMT.base: Failed to get "write" lock +Is another process using the image [TEST_DIR/t.IMGFMT.base]? Formatting 'TEST_DIR/t.IMGFMT.int', fmt=IMGFMT size=1048576 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=IMGFMT Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576 backing_file=TEST_DIR/t.IMGFMT.int backing_fmt=IMGFMT { 'execute': 'qmp_capabilities' } any ideas? Christian