| /* |
| * CDDL HEADER START |
| * |
| * The contents of this file are subject to the terms of the |
| * Common Development and Distribution License (the "License"). |
| * You may not use this file except in compliance with the License. |
| * |
| * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE |
| * or http://www.opensolaris.org/os/licensing. |
| * See the License for the specific language governing permissions |
| * and limitations under the License. |
| * |
| * When distributing Covered Code, include this CDDL HEADER in each |
| * file and include the License file at usr/src/OPENSOLARIS.LICENSE. |
| * If applicable, add the following below this CDDL HEADER, with the |
| * fields enclosed by brackets "[]" replaced with your own identifying |
| * information: Portions Copyright [yyyy] [name of copyright owner] |
| * |
| * CDDL HEADER END |
| */ |
| |
| #include <sys/zfs_context.h> |
| #include <sys/spa.h> |
| #include <sys/spa_impl.h> |
| #include <sys/dmu.h> |
| #include <sys/zap.h> |
| #include <sys/vdev.h> |
| #include <sys/vdev_os.h> |
| #include <sys/vdev_impl.h> |
| #include <sys/uberblock_impl.h> |
| #include <sys/metaslab.h> |
| #include <sys/metaslab_impl.h> |
| #include <sys/zio.h> |
| #include <sys/dsl_scan.h> |
| #include <sys/abd.h> |
| #include <sys/fs/zfs.h> |
| |
| int |
| vdev_label_write_pad2(vdev_t *vd, const char *buf, size_t size) |
| { |
| spa_t *spa = vd->vdev_spa; |
| zio_t *zio; |
| abd_t *pad2; |
| int flags = ZIO_FLAG_CONFIG_WRITER | ZIO_FLAG_CANFAIL; |
| int error; |
| |
| if (size > VDEV_PAD_SIZE) |
| return (EINVAL); |
| |
| if (!vd->vdev_ops->vdev_op_leaf) |
| return (ENODEV); |
| if (vdev_is_dead(vd)) |
| return (ENXIO); |
| |
| ASSERT3U(spa_config_held(spa, SCL_ALL, RW_WRITER), ==, SCL_ALL); |
| |
| pad2 = abd_alloc_for_io(VDEV_PAD_SIZE, B_TRUE); |
| abd_zero(pad2, VDEV_PAD_SIZE); |
| abd_copy_from_buf(pad2, buf, size); |
| |
| retry: |
| zio = zio_root(spa, NULL, NULL, flags); |
| vdev_label_write(zio, vd, 0, pad2, |
| offsetof(vdev_label_t, vl_be), |
| VDEV_PAD_SIZE, NULL, NULL, flags); |
| error = zio_wait(zio); |
| if (error != 0 && !(flags & ZIO_FLAG_TRYHARD)) { |
| flags |= ZIO_FLAG_TRYHARD; |
| goto retry; |
| } |
| |
| abd_free(pad2); |
| return (error); |
| } |