Create a thread for a vdev
#include <qvm/vdev-core.h>
int vdev_thread_create(const vdev_t *vdp,
const char *name,
pthread_t *thread,
pthread_attr_t *attr,
void *(*start_routine)(void *),
void *arg)
See pthread_create() in the C Library Reference.
The value returned by pthread_create().