Displaying 2 results from an estimated 2 matches for "bdrv_aio_read".
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bdrv_aio_readv
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]
...w 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->n, qcow_aio_read_cb, acb); //**************
//I read what the acb->buf points to, but find the reading operation is not finished.
if (acb->hd_aiocb == NULL)...
2008 Mar 10
12
[RFC][PATCH] Use ioemu block drivers through blktap
When I submitted the qcow2 patch for blktap, suggestions came up that
the qemu block drivers should be used also for blktap to eliminate the
current code duplication in ioemu and blktap.
The attached patch adds support for a tap:ioemu pseudo driver. Devices
using this driver won''t use tapdisk (containing the code duplication)
any more, but will connect to the qemu-dm of the domain. In