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📄 Makefile.am(2.18 KB)
📄 abd.h(4.25 KB)
📄 abd_impl.h(4.41 KB)
📄 aggsum.h(1.28 KB)
📄 arc.h(11.19 KB)
📄 arc_impl.h(33.15 KB)
📄 avl.h(9.16 KB)
📄 avl_impl.h(4.8 KB)
📄 bitops.h(3.2 KB)
📄 blkptr.h(914 B)
📄 bplist.h(1.6 KB)
📄 bpobj.h(3.21 KB)
📄 bptree.h(1.89 KB)
📄 bqueue.h(1.23 KB)
📄 btree.h(7.68 KB)
📁 crypto
📄 dataset_kstats.h(2.27 KB)
📄 dbuf.h(13.94 KB)
📄 ddt.h(7.96 KB)
📄 dmu.h(39.06 KB)
📄 dmu_impl.h(6.92 KB)
📄 dmu_objset.h(9.19 KB)
📄 dmu_recv.h(2.75 KB)
📄 dmu_redact.h(1.67 KB)
📄 dmu_send.h(2.54 KB)
📄 dmu_traverse.h(3.02 KB)
📄 dmu_tx.h(4.43 KB)
📄 dmu_zfetch.h(2.23 KB)
📄 dnode.h(22.41 KB)
📄 dsl_bookmark.h(5.05 KB)
📄 dsl_crypt.h(7.76 KB)
📄 dsl_dataset.h(18.62 KB)
📄 dsl_deadlist.h(4.21 KB)
📄 dsl_deleg.h(3.27 KB)
📄 dsl_destroy.h(2.19 KB)
📄 dsl_dir.h(7.67 KB)
📄 dsl_pool.h(6.23 KB)
📄 dsl_prop.h(4.38 KB)
📄 dsl_scan.h(7.11 KB)
📄 dsl_synctask.h(4.06 KB)
📄 dsl_userhold.h(1.84 KB)
📄 edonr.h(2.65 KB)
📄 efi_partition.h(16.28 KB)
📁 fm
📄 frame.h(935 B)
📁 fs
📄 hkdf.h(782 B)
📁 lua
📄 metaslab.h(5.48 KB)
📄 metaslab_impl.h(21.23 KB)
📄 mmp.h(2.37 KB)
📄 mntent.h(5.22 KB)
📄 mod.h(1.26 KB)
📄 multilist.h(3.27 KB)
📄 note.h(1.62 KB)
📄 nvpair.h(14.77 KB)
📄 nvpair_impl.h(2.23 KB)
📄 objlist.h(1.13 KB)
📄 pathname.h(2.12 KB)
📄 qat.h(5.86 KB)
📄 range_tree.h(9.73 KB)
📄 rrwlock.h(3.53 KB)
📄 sa.h(5.14 KB)
📄 sa_impl.h(8.29 KB)
📄 skein.h(6.69 KB)
📄 spa.h(46.07 KB)
📄 spa_boot.h(1.16 KB)
📄 spa_checkpoint.h(1.44 KB)
📄 spa_checksum.h(1.96 KB)
📄 spa_impl.h(18.25 KB)
📄 spa_log_spacemap.h(2.62 KB)
📄 space_map.h(8.7 KB)
📄 space_reftree.h(1.69 KB)
📁 sysevent
📄 sysevent.h(1.07 KB)
📄 txg.h(4.66 KB)
📄 txg_impl.h(4.77 KB)
📄 u8_textprep.h(3.59 KB)
📄 u8_textprep_data.h(1.41 MB)
📄 uberblock.h(1.36 KB)
📄 uberblock_impl.h(5.11 KB)
📄 uio_impl.h(1.58 KB)
📄 unique.h(1.56 KB)
📄 uuid.h(2.85 KB)
📄 vdev.h(8.18 KB)
📄 vdev_disk.h(1.65 KB)
📄 vdev_draid.h(3.43 KB)
📄 vdev_file.h(1.23 KB)
📄 vdev_impl.h(22.53 KB)
📄 vdev_indirect_births.h(2.31 KB)
📄 vdev_indirect_mapping.h(4.38 KB)
📄 vdev_initialize.h(1.39 KB)
📄 vdev_raidz.h(2.04 KB)
📄 vdev_raidz_impl.h(10.54 KB)
📄 vdev_rebuild.h(3.4 KB)
📄 vdev_removal.h(2.63 KB)
📄 vdev_trim.h(1.72 KB)
📄 xvattr.h(13.1 KB)
📄 zap.h(18.63 KB)
📄 zap_impl.h(6.79 KB)
📄 zap_leaf.h(7.84 KB)
📄 zcp.h(4.87 KB)
📄 zcp_global.h(742 B)
📄 zcp_iter.h(1.07 KB)
📄 zcp_prop.h(780 B)
📄 zcp_set.h(929 B)
📄 zfeature.h(2.42 KB)
📄 zfs_acl.h(8.08 KB)
📄 zfs_bootenv.h(1.41 KB)
📄 zfs_context.h(21.23 KB)
📄 zfs_debug.h(3.3 KB)
📄 zfs_delay.h(1.25 KB)
📄 zfs_file.h(2.06 KB)
📄 zfs_fuid.h(4.26 KB)
📄 zfs_ioctl.h(17.63 KB)
📄 zfs_ioctl_impl.h(3.1 KB)
📄 zfs_onexit.h(1.65 KB)
📄 zfs_project.h(2.35 KB)
📄 zfs_quota.h(1.57 KB)
📄 zfs_racct.h(1.12 KB)
📄 zfs_ratelimit.h(1.11 KB)
📄 zfs_refcount.h(4.15 KB)
📄 zfs_rlock.h(2.54 KB)
📄 zfs_sa.h(4.38 KB)
📄 zfs_stat.h(1.45 KB)
📄 zfs_sysfs.h(1.49 KB)
📄 zfs_vfsops.h(1.05 KB)
📄 zfs_vnops.h(2 KB)
📄 zfs_znode.h(10.93 KB)
📄 zil.h(18.27 KB)
📄 zil_impl.h(9.12 KB)
📄 zio.h(21.68 KB)
📄 zio_checksum.h(4.55 KB)
📄 zio_compress.h(5.91 KB)
📄 zio_crypt.h(5.21 KB)
📄 zio_impl.h(8.33 KB)
📄 zio_priority.h(1.2 KB)
📄 zrlock.h(1.7 KB)
📁 zstd
📄 zthr.h(1.23 KB)
📄 zvol.h(2.27 KB)
📄 zvol_impl.h(3.7 KB)

Editing: uberblock_impl.h

/*
 * 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) 2016, 2017 by Delphix. All rights reserved.
 */

#ifndef _SYS_UBERBLOCK_IMPL_H
#define	_SYS_UBERBLOCK_IMPL_H

#include <sys/uberblock.h>

#ifdef	__cplusplus
extern "C" {
#endif

/*
 * The uberblock version is incremented whenever an incompatible on-disk
 * format change is made to the SPA, DMU, or ZAP.
 *
 * Note: the first two fields should never be moved.  When a storage pool
 * is opened, the uberblock must be read off the disk before the version
 * can be checked.  If the ub_version field is moved, we may not detect
 * version mismatch.  If the ub_magic field is moved, applications that
 * expect the magic number in the first word won't work.
 */
#define	UBERBLOCK_MAGIC		0x00bab10c		/* oo-ba-bloc!	*/
#define	UBERBLOCK_SHIFT		10			/* up to 1K	*/
#define	MMP_MAGIC		0xa11cea11		/* all-see-all	*/

#define	MMP_INTERVAL_VALID_BIT	0x01
#define	MMP_SEQ_VALID_BIT	0x02
#define	MMP_FAIL_INT_VALID_BIT	0x04

#define	MMP_VALID(ubp)		(ubp->ub_magic == UBERBLOCK_MAGIC && \
				    ubp->ub_mmp_magic == MMP_MAGIC)
#define	MMP_INTERVAL_VALID(ubp)	(MMP_VALID(ubp) && (ubp->ub_mmp_config & \
				    MMP_INTERVAL_VALID_BIT))
#define	MMP_SEQ_VALID(ubp)	(MMP_VALID(ubp) && (ubp->ub_mmp_config & \
				    MMP_SEQ_VALID_BIT))
#define	MMP_FAIL_INT_VALID(ubp)	(MMP_VALID(ubp) && (ubp->ub_mmp_config & \
				    MMP_FAIL_INT_VALID_BIT))

#define	MMP_INTERVAL(ubp)	((ubp->ub_mmp_config & 0x00000000FFFFFF00) \
				    >> 8)
#define	MMP_SEQ(ubp)		((ubp->ub_mmp_config & 0x0000FFFF00000000) \
				    >> 32)
#define	MMP_FAIL_INT(ubp)	((ubp->ub_mmp_config & 0xFFFF000000000000) \
				    >> 48)

#define	MMP_INTERVAL_SET(write) \
	    (((uint64_t)(write & 0xFFFFFF) << 8) | MMP_INTERVAL_VALID_BIT)

#define	MMP_SEQ_SET(seq) \
	    (((uint64_t)(seq & 0xFFFF) << 32) | MMP_SEQ_VALID_BIT)

#define	MMP_FAIL_INT_SET(fail) \
	    (((uint64_t)(fail & 0xFFFF) << 48) | MMP_FAIL_INT_VALID_BIT)

struct uberblock {
	uint64_t	ub_magic;	/* UBERBLOCK_MAGIC		*/
	uint64_t	ub_version;	/* SPA_VERSION			*/
	uint64_t	ub_txg;		/* txg of last sync		*/
	uint64_t	ub_guid_sum;	/* sum of all vdev guids	*/
	uint64_t	ub_timestamp;	/* UTC time of last sync	*/
	blkptr_t	ub_rootbp;	/* MOS objset_phys_t		*/

/* highest SPA_VERSION supported by software that wrote this txg */
	uint64_t	ub_software_version;

/* Maybe missing in uberblocks we read, but always written */
	uint64_t	ub_mmp_magic;	/* MMP_MAGIC			*/
	/*
	 * If ub_mmp_delay == 0 and ub_mmp_magic is valid, MMP is off.
	 * Otherwise, nanosec since last MMP write.
	 */
	uint64_t	ub_mmp_delay;

/*
	 * The ub_mmp_config contains the multihost write interval, multihost
	 * fail intervals, sequence number for sub-second granularity, and
	 * valid bit mask.  This layout is as follows:
	 *
	 *   64      56      48      40      32      24      16      8       0
	 *   +-------+-------+-------+-------+-------+-------+-------+-------+
	 * 0 | Fail Intervals|      Seq      |   Write Interval (ms) | VALID |
	 *   +-------+-------+-------+-------+-------+-------+-------+-------+
	 *
	 * This allows a write_interval of (2^24/1000)s, over 4.5 hours
	 *
	 * VALID Bits:
	 * - 0x01 - Write Interval (ms)
	 * - 0x02 - Sequence number exists
	 * - 0x04 - Fail Intervals
	 * - 0xf8 - Reserved
	 */
	uint64_t	ub_mmp_config;

/*
	 * ub_checkpoint_txg indicates two things about the current uberblock:
	 *
	 * 1] If it is not zero then this uberblock is a checkpoint. If it is
	 *    zero, then this uberblock is not a checkpoint.
	 *
	 * 2] On checkpointed uberblocks, the value of ub_checkpoint_txg is
	 *    the ub_txg that the uberblock had at the time we moved it to
	 *    the MOS config.
	 *
	 * The field is set when we checkpoint the uberblock and continues to
	 * hold that value even after we've rewound (unlike the ub_txg that
	 * is reset to a higher value).
	 *
	 * Besides checks used to determine whether we are reopening the
	 * pool from a checkpointed uberblock [see spa_ld_select_uberblock()],
	 * the value of the field is used to determine which ZIL blocks have
	 * been allocated according to the ms_sm when we are rewinding to a
	 * checkpoint. Specifically, if blk_birth > ub_checkpoint_txg, then
	 * the ZIL block is not allocated [see uses of spa_min_claim_txg()].
	 */
	uint64_t	ub_checkpoint_txg;
};

#ifdef	__cplusplus
}
#endif

#endif	/* _SYS_UBERBLOCK_IMPL_H */

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