Am 04.03.2015 um 23:48 hat Stefan Hajnoczi geschrieben: > Since commit c25f53b06eba1575d5d0e92a0132455c97825b83 ("raw: Probe > required direct I/O alignment") QEMU has failed to launch if image files > produce I/O errors. > > Previously, QEMU would launch successfully and the guest would see the > errors when attempting I/O. > > This is a regression and may prevent multipath I/O inside the guest, > where QEMU must launch and let the guest figure out by itself which > disks are online. > > Tweak the alignment probing code in raw-posix.c to explicitly look for > EINVAL on Linux instead of bailing. The kernel refuses misaligned > requests with this error code and other error codes can be ignored. > > Signed-off-by: Stefan Hajnoczi <stefa...@redhat.com>
This seems to conflict with the geometry series. Please rebase on the current block branch. Also, I would be surprised if this had been working by design. It's probably more by chance. If we want to make this a supported case, we need to add a qemu-iotests case, as this seems to be easy to break accidentally. Kevin