static int
vdev_disk_off_notify(ldi_handle_t lh, ldi_ev_cookie_t ecookie, void *arg,
void *ev_data)
{
vdev_t *vd = (vdev_t *)arg;
vdev_disk_t *dvd = vd->vdev_tsd;
/*
* Ignore events other than offline.
*/
if (strcmp(ldi_ev_get_type(ecookie), LDI_EV_OFFLINE) != 0)
return (LDI_EV_SUCCESS);
/*
* All LDI handles must be closed for the state change to succeed, so
* call on vdev_disk_close() to do this.
*
* We inform vdev_disk_close that it is being called from offline
* notify context so it will defer cleanup of LDI event callbacks and
* freeing of vd->vdev_tsd to the offline finalize or a reopen.
*/
dvd->vd_ldi_offline = B_TRUE;
vdev_disk_close(vd);
/*
* Now that the device is closed, request that the spa_async_thread
* mark the device as REMOVED and notify FMA of the removal.
*/
zfs_post_remove(vd->vdev_spa, vd);
vd->vdev_remove_wanted = B_TRUE;
spa_async_request(vd->vdev_spa, SPA_ASYNC_REMOVE);
return (LDI_EV_SUCCESS);
}
/*
* Unfortunately the notify thread that posts the termination event to us
* is inside IOkit locked loop, so we have to issue the vnode_close()
* async, or vn_close()/dkclose() will wait on notify to release the lock
*/
static void vdev_close_thread(void *arg)
{
vdev_t *vd = (vdev_t *)arg;
vdev_disk_t *dvd = (vdev_disk_t *)vd->vdev_tsd;
if (dvd) dvd->vd_offline = B_TRUE;
vdev_disk_close(vd);
thread_exit();
}