projects / mirror_zfs.git / blame
| Commit | Line | Data |
|---|---|---|
| 34dc7c2f BB |
1 | /* |
| 2 | * CDDL HEADER START | |
| 3 | * | |
| 4 | * The contents of this file are subject to the terms of the | |
| 5 | * Common Development and Distribution License (the "License"). | |
| 6 | * You may not use this file except in compliance with the License. | |
| 7 | * | |
| 8 | * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
| 1d3ba0bf | 9 | * or https://opensource.org/licenses/CDDL-1.0. |
| 34dc7c2f BB |
10 | * See the License for the specific language governing permissions |
| 11 | * and limitations under the License. | |
| 12 | * | |
| 13 | * When distributing Covered Code, include this CDDL HEADER in each | |
| 14 | * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
| 15 | * If applicable, add the following below this CDDL HEADER, with the | |
| 16 | * fields enclosed by brackets "[]" replaced with your own identifying | |
| 17 | * information: Portions Copyright [yyyy] [name of copyright owner] | |
| 18 | * | |
| 19 | * CDDL HEADER END | |
| 20 | */ | |
| 21 | /* | |
| 428870ff | 22 | * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
| d2734cce | 23 | * Copyright (c) 2013, 2017 by Delphix. All rights reserved. |
| 34dc7c2f BB |
24 | */ |
| 25 | ||
| 34dc7c2f BB |
26 | #include <sys/zfs_context.h> |
| 27 | #include <sys/uberblock_impl.h> | |
| 28 | #include <sys/vdev_impl.h> | |
| 060f0226 | 29 | #include <sys/mmp.h> |
| 34dc7c2f BB |
30 | |
| 31 | int | |
| 32 | uberblock_verify(uberblock_t *ub) | |
| 33 | { | |
| 34 | if (ub->ub_magic == BSWAP_64((uint64_t)UBERBLOCK_MAGIC)) | |
| 35 | byteswap_uint64_array(ub, sizeof (uberblock_t)); | |
| 36 | ||
| 37 | if (ub->ub_magic != UBERBLOCK_MAGIC) | |
| 2e528b49 | 38 | return (SET_ERROR(EINVAL)); |
| 34dc7c2f BB |
39 | |
| 40 | return (0); | |
| 41 | } | |
| 42 | ||
| 43 | /* | |
| 905edb40 MA |
44 | * Update the uberblock and return TRUE if anything changed in this |
| 45 | * transaction group. | |
| 34dc7c2f | 46 | */ |
| 905edb40 | 47 | boolean_t |
| 379ca9cf | 48 | uberblock_update(uberblock_t *ub, vdev_t *rvd, uint64_t txg, uint64_t mmp_delay) |
| 34dc7c2f BB |
49 | { |
| 50 | ASSERT(ub->ub_txg < txg); | |
| 51 | ||
| 52 | /* | |
| 53 | * We explicitly do not set ub_version here, so that older versions | |
| 54 | * continue to be written with the previous uberblock version. | |
| 55 | */ | |
| 56 | ub->ub_magic = UBERBLOCK_MAGIC; | |
| 57 | ub->ub_txg = txg; | |
| 58 | ub->ub_guid_sum = rvd->vdev_guid_sum; | |
| 59 | ub->ub_timestamp = gethrestime_sec(); | |
| 428870ff | 60 | ub->ub_software_version = SPA_VERSION; |
| 379ca9cf | 61 | ub->ub_mmp_magic = MMP_MAGIC; |
| 060f0226 OF |
62 | if (spa_multihost(rvd->vdev_spa)) { |
| 63 | ub->ub_mmp_delay = mmp_delay; | |
| 64 | ub->ub_mmp_config = MMP_SEQ_SET(0) | | |
| 65 | MMP_INTERVAL_SET(zfs_multihost_interval) | | |
| 66 | MMP_FAIL_INT_SET(zfs_multihost_fail_intervals); | |
| 67 | } else { | |
| 68 | ub->ub_mmp_delay = 0; | |
| 69 | ub->ub_mmp_config = 0; | |
| 70 | } | |
| d2734cce | 71 | ub->ub_checkpoint_txg = 0; |
| 34dc7c2f BB |
72 | |
| 73 | return (ub->ub_rootbp.blk_birth == txg); | |
| 74 | } |