On Tue, 7 Jul 2015 10:52:01 +0900 Ganis Zulfa Santoso <ganis.zulfa@xxxxxxxxx> wrote: > Hi Linux Virtualization Mailing List Members, > > I am trying to develop a driver for virtio blk device in guest. Why don't you simply use the driver that is already available in the kernel? > I can safely mount the virtual blk device with: mount /dev/vda /mnt/ > in /mnt/ I can read & write the device. But when I run a simple hello world program in /mnt/root/, this error happens: Have you already verified that you can successfully read the _right_ data from your block device? I.e. something like mount /dev/xxx /mnt cp helloworld_static /mnt/root/helloworld_static umount /mnt # just to make sure that it is not cached mount /dev/xxx /mnt md5sum helloworld_static md5sum /mnt/root/helloworld_static ... and then compare the two md5sums whether they are the same? Thomas _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization