Displaying 1 result from an estimated 1 matches for "qcow_aio_read_cb".
2012 Dec 19
3
!!!!!help!I wouldn't be able to meet the deadline!(qcow format image file read operation in qemu-img-xen)[updated]
...on a raw format image, if nesethe backingfile ,just that raw format image file,would be read .my purpose is to cache the data that is read from the backingfile when the hvm is running .
Now what I concern is the following (which is in the /xen-4.1.2/tools/ioemu-qemu-xen/block-qcow.c) :
static void qcow_aio_read_cb(void *opaque, int ret)
{
........
if (!acb->cluster_offset) {
if (bs->backing_hd) {
/* read from the base image */
acb->hd_aiocb = bdrv_aio_read(bs->backing_hd, //*************
acb->sector_num, acb->buf, acb...