Il 09/10/2013 09:15, Alexey Kardashevskiy ha scritto: > Sorry for my ignorance (I never ever touched this part of qemu) but how can > you possibly avoid block.c while doing savevm? The qcow2 driver must not > use posix read()/write(), right? So no matter how, all writes end up in > bdrv_co_do_writev() which changes blocks number. Or use > raw_aio_readv()/raw_aio_writev() API directly? Please give some more hints. > Thanks.
I think Kevin was suggesting using qcow_aio_writev directly, or something like that. But it is not trivial, especially because save_vm_state takes byte offsets instead of sectors. So for now I'd still go for the more hacky solution. Paolo
