75 lines
2.2 KiB
C
75 lines
2.2 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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
|
|
* Copyright (c) 2013, 2017 by Delphix. All rights reserved.
|
|
*/
|
|
|
|
#include <sys/zfs_context.h>
|
|
#include <sys/uberblock_impl.h>
|
|
#include <sys/vdev_impl.h>
|
|
#include <sys/mmp.h>
|
|
|
|
int
|
|
uberblock_verify(uberblock_t *ub)
|
|
{
|
|
if (ub->ub_magic == BSWAP_64((uint64_t)UBERBLOCK_MAGIC))
|
|
byteswap_uint64_array(ub, sizeof (uberblock_t));
|
|
|
|
if (ub->ub_magic != UBERBLOCK_MAGIC)
|
|
return (SET_ERROR(EINVAL));
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Update the uberblock and return TRUE if anything changed in this
|
|
* transaction group.
|
|
*/
|
|
boolean_t
|
|
uberblock_update(uberblock_t *ub, vdev_t *rvd, uint64_t txg, uint64_t mmp_delay)
|
|
{
|
|
ASSERT(ub->ub_txg < txg);
|
|
|
|
/*
|
|
* We explicitly do not set ub_version here, so that older versions
|
|
* continue to be written with the previous uberblock version.
|
|
*/
|
|
ub->ub_magic = UBERBLOCK_MAGIC;
|
|
ub->ub_txg = txg;
|
|
ub->ub_guid_sum = rvd->vdev_guid_sum;
|
|
ub->ub_timestamp = gethrestime_sec();
|
|
ub->ub_software_version = SPA_VERSION;
|
|
ub->ub_mmp_magic = MMP_MAGIC;
|
|
if (spa_multihost(rvd->vdev_spa)) {
|
|
ub->ub_mmp_delay = mmp_delay;
|
|
ub->ub_mmp_config = MMP_SEQ_SET(0) |
|
|
MMP_INTERVAL_SET(zfs_multihost_interval) |
|
|
MMP_FAIL_INT_SET(zfs_multihost_fail_intervals);
|
|
} else {
|
|
ub->ub_mmp_delay = 0;
|
|
ub->ub_mmp_config = 0;
|
|
}
|
|
ub->ub_checkpoint_txg = 0;
|
|
|
|
return (ub->ub_rootbp.blk_birth == txg);
|
|
}
|