void read10_cb(struct iscsi_context *iscsi, int status, void *command_data, void *private_data)
{
struct client *client = (struct client *)private_data;
struct scsi_task *task = command_data;
struct write_task *wt;
if (status == SCSI_STATUS_CHECK_CONDITION) {
printf("Read10 failed with sense key:%d ascq:%04x\n", task->sense.key, task->sense.ascq);
exit(10);
}
wt = malloc(sizeof(struct write_task));
wt->rt = task;
wt->client = client;
if (iscsi_write10_task(client->dst_iscsi,
client->dst_lun,
task->params.read10.lba,
task->datain.data,
task->datain.size,
client->dst_blocksize,
0, 0, 0, 0, 0,
write10_cb, wt) == NULL) {
printf("failed to send read10 command\n");
scsi_free_scsi_task(task);
exit(10);
}
}
static BlockDriverAIOCB *
iscsi_aio_writev(BlockDriverState *bs, int64_t sector_num,
QEMUIOVector *qiov, int nb_sectors,
BlockDriverCompletionFunc *cb,
void *opaque)
{
IscsiLun *iscsilun = bs->opaque;
struct iscsi_context *iscsi = iscsilun->iscsi;
IscsiAIOCB *acb;
size_t size;
int fua = 0;
/* set FUA on writes when cache mode is write through */
if (!(bs->open_flags & BDRV_O_CACHE_WB)) {
fua = 1;
}
acb = qemu_aio_get(&iscsi_aio_pool, bs, cb, opaque);
trace_iscsi_aio_writev(iscsi, sector_num, nb_sectors, opaque, acb);
acb->iscsilun = iscsilun;
acb->qiov = qiov;
acb->canceled = 0;
/* XXX we should pass the iovec to write10 to avoid the extra copy */
/* this will allow us to get rid of 'buf' completely */
size = nb_sectors * BDRV_SECTOR_SIZE;
acb->buf = g_malloc(size);
qemu_iovec_to_buffer(acb->qiov, acb->buf);
acb->task = iscsi_write10_task(iscsi, iscsilun->lun,
sector_qemu2lun(sector_num, iscsilun),
acb->buf, size, iscsilun->block_size,
0, 0, fua, 0, 0,
iscsi_aio_write10_cb, acb);
if (acb->task == NULL) {
error_report("iSCSI: Failed to send write10 command. %s",
iscsi_get_error(iscsi));
g_free(acb->buf);
qemu_aio_release(acb);
return NULL;
}
iscsi_set_events(iscsilun);
return &acb->common;
}
