Am 20.04.2016 um 04:11 hat Fam Zheng geschrieben: > On Tue, 04/19 19:47, Lutz Vieweg wrote: > > The guest drive parameters are: > > > -drive > > > "file=image.raw,if=virtio,format=raw,media=disk,cache=unsafe,werror=report,rerror=report" > > Given this implies aio=threads... > > > Can you provide any hint on how to pursue the cause of these errors? > > (I thought about using "strace -f -p ..." on qemu, but I don't > > know what exactly to look for in the output - some failed "pwrite()" > > to the image file?) > > ... yes, this should work.
To catch all possible write failures, I think pwrite, pwritev and possibly fdatasync need to be considered. Kevin
