113 lines
3.2 KiB
C
113 lines
3.2 KiB
C
/*
|
|
* 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
|
|
*/
|
|
/*
|
|
* Copyright 2010 Sun Microsystems, Inc. All rights reserved.
|
|
* Use is subject to license terms.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 2012, 2016 by Delphix. All rights reserved.
|
|
*/
|
|
|
|
/*
|
|
* The 'missing' vdev is a special vdev type used only during import. It
|
|
* signifies a placeholder in the root vdev for some vdev that we know is
|
|
* missing. We pass it down to the kernel to allow the rest of the
|
|
* configuration to parsed and an attempt made to open all available devices.
|
|
* Because its GUID is always 0, we know that the guid sum will mismatch and we
|
|
* won't be able to open the pool anyway.
|
|
*/
|
|
|
|
#include <sys/zfs_context.h>
|
|
#include <sys/spa.h>
|
|
#include <sys/vdev_impl.h>
|
|
#include <sys/fs/zfs.h>
|
|
#include <sys/zio.h>
|
|
|
|
/* ARGSUSED */
|
|
static int
|
|
vdev_missing_open(vdev_t *vd, uint64_t *psize, uint64_t *max_psize,
|
|
uint64_t *ashift, uint64_t *pshift)
|
|
{
|
|
/*
|
|
* Really this should just fail. But then the root vdev will be in the
|
|
* faulted state with VDEV_AUX_NO_REPLICAS, when what we really want is
|
|
* VDEV_AUX_BAD_GUID_SUM. So we pretend to succeed, knowing that we
|
|
* will fail the GUID sum check before ever trying to open the pool.
|
|
*/
|
|
*psize = 0;
|
|
*max_psize = 0;
|
|
*ashift = 0;
|
|
*pshift = 0;
|
|
return (0);
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
static void
|
|
vdev_missing_close(vdev_t *vd)
|
|
{
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
static void
|
|
vdev_missing_io_start(zio_t *zio)
|
|
{
|
|
zio->io_error = SET_ERROR(ENOTSUP);
|
|
zio_execute(zio);
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
static void
|
|
vdev_missing_io_done(zio_t *zio)
|
|
{
|
|
}
|
|
|
|
vdev_ops_t vdev_missing_ops = {
|
|
.vdev_op_open = vdev_missing_open,
|
|
.vdev_op_close = vdev_missing_close,
|
|
.vdev_op_asize = vdev_default_asize,
|
|
.vdev_op_io_start = vdev_missing_io_start,
|
|
.vdev_op_io_done = vdev_missing_io_done,
|
|
.vdev_op_state_change = NULL,
|
|
.vdev_op_need_resilver = NULL,
|
|
.vdev_op_hold = NULL,
|
|
.vdev_op_rele = NULL,
|
|
.vdev_op_remap = NULL,
|
|
.vdev_op_xlate = NULL,
|
|
.vdev_op_type = VDEV_TYPE_MISSING, /* name of this vdev type */
|
|
.vdev_op_leaf = B_TRUE /* leaf vdev */
|
|
};
|
|
|
|
vdev_ops_t vdev_hole_ops = {
|
|
.vdev_op_open = vdev_missing_open,
|
|
.vdev_op_close = vdev_missing_close,
|
|
.vdev_op_asize = vdev_default_asize,
|
|
.vdev_op_io_start = vdev_missing_io_start,
|
|
.vdev_op_io_done = vdev_missing_io_done,
|
|
.vdev_op_state_change = NULL,
|
|
.vdev_op_need_resilver = NULL,
|
|
.vdev_op_hold = NULL,
|
|
.vdev_op_rele = NULL,
|
|
.vdev_op_remap = NULL,
|
|
.vdev_op_xlate = NULL,
|
|
.vdev_op_type = VDEV_TYPE_HOLE, /* name of this vdev type */
|
|
.vdev_op_leaf = B_TRUE /* leaf vdev */
|
|
};
|