Hi, Stefan reported this, this is a regression caused by commit efaa7c4eeb7490c6f37f3.
I sent a separate series for the git master, this is the backport for QEMU v2.6.0. Berto Alberto Garcia (2): blockdev: Fix regression with the default naming of throttling groups qemu-iotests: Test naming of throttling groups blockdev.c | 9 +++-- tests/qemu-iotests/093 | 98 ++++++++++++++++++++++++++++++++++++++++++++++ tests/qemu-iotests/093.out | 4 +- 3 files changed, 106 insertions(+), 5 deletions(-) -- 2.8.1