Function vdev_probe_done

freebsd/contrib/openzfs/module/zfs/vdev.c:1482–1536

} vdev_probe_stats_t;

static void
vdev_probe_done(zio_t *zio)
{
	spa_t *spa = zio->io_spa;
	vdev_t *vd = zio->io_vd;
	vdev_probe_stats_t *vps = zio->io_private;

	ASSERT(vd->vdev_probe_zio != NULL);

	if (zio->io_type == ZIO_TYPE_READ) {
		if (zio->io_error == 0)
			vps->vps_readable = 1;
		if (zio->io_error == 0 && spa_writeable(spa)) {
			zio_nowait(zio_write_phys(vd->vdev_probe_zio, vd,
			    zio->io_offset, zio->io_size, zio->io_abd,
			    ZIO_CHECKSUM_OFF, vdev_probe_done, vps,
			    ZIO_PRIORITY_SYNC_WRITE, vps->vps_flags, B_TRUE));
		} else {
			abd_free(zio->io_abd);
		}
	} else if (zio->io_type == ZIO_TYPE_WRITE) {
		if (zio->io_error == 0)
			vps->vps_writeable = 1;
		abd_free(zio->io_abd);
	} else if (zio->io_type == ZIO_TYPE_NULL) {
		zio_t *pio;
		zio_link_t *zl;

		vd->vdev_cant_read |= !vps->vps_readable;
		vd->vdev_cant_write |= !vps->vps_writeable;

		if (vdev_readable(vd) &&
		    (vdev_writeable(vd) || !spa_writeable(spa))) {
			zio->io_error = 0;
		} else {
			ASSERT(zio->io_error != 0);
			vdev_dbgmsg(vd, "failed probe");
			(void) zfs_ereport_post(FM_EREPORT_ZFS_PROBE_FAILURE,
			    spa, vd, NULL, NULL, 0);
			zio->io_error = SET_ERROR(ENXIO);
		}

		mutex_enter(&vd->vdev_probe_lock);
		ASSERT(vd->vdev_probe_zio == zio);
		vd->vdev_probe_zio = NULL;
		mutex_exit(&vd->vdev_probe_lock);

		zl = NULL;
		while ((pio = zio_walk_parents(zio, &zl)) != NULL)
			if (!vdev_accessible(vd, pio))
				pio->io_error = SET_ERROR(ENXIO);

		kmem_free(vps, sizeof (*vps));
	}
}

/*
 * Determine whether this device is accessible.