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493fcce9be
There exist a couple of macros that are used to update the blkptr birth times but they can often be confusing. For example, the BP_PHYSICAL_BIRTH() macro will provide either the physical birth time if it is set or else return back the logical birth time. The complement to this macro is BP_SET_BIRTH() which will set the logical birth time and set the physical birth time if they are not the same. Consumers may get confused when they are trying to get the physical birth time and use the BP_PHYSICAL_BIRTH() macro only to find out that the logical birth time is what is actually returned. This change cleans up these macros and makes them symmetrical. The same functionally is preserved but the name is changed. Instead of calling BP_PHYSICAL_BIRTH(), consumer can now call BP_GET_BIRTH(). In additional to cleaning up this naming conventions, two new sets of macros are introduced -- BP_[SET|GET]_LOGICAL_BIRTH() and BP_[SET|GET]_PHYSICAL_BIRTH. These new macros allow the consumer to get and set the specific birth time. As part of the cleanup, the unused GRID macros have been removed and that portion of the blkptr are currently unused. Reviewed-by: Matthew Ahrens <mahrens@delphix.com> Reviewed-by: Alexander Motin <mav@FreeBSD.org> Reviewed-by: Mark Maybee <mark.maybee@delphix.com> Signed-off-by: George Wilson <gwilson@delphix.com> Closes #15962
181 lines
6.3 KiB
C
181 lines
6.3 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or https://opensource.org/licenses/CDDL-1.0.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2016, 2017 by Delphix. All rights reserved.
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*/
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#ifndef _SYS_UBERBLOCK_IMPL_H
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#define _SYS_UBERBLOCK_IMPL_H
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#include <sys/uberblock.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* The uberblock version is incremented whenever an incompatible on-disk
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* format change is made to the SPA, DMU, or ZAP.
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*
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* Note: the first two fields should never be moved. When a storage pool
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* is opened, the uberblock must be read off the disk before the version
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* can be checked. If the ub_version field is moved, we may not detect
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* version mismatch. If the ub_magic field is moved, applications that
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* expect the magic number in the first word won't work.
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*/
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#define UBERBLOCK_MAGIC 0x00bab10c /* oo-ba-bloc! */
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#define UBERBLOCK_SHIFT 10 /* up to 1K */
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#define MMP_MAGIC 0xa11cea11 /* all-see-all */
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#define MMP_INTERVAL_VALID_BIT 0x01
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#define MMP_SEQ_VALID_BIT 0x02
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#define MMP_FAIL_INT_VALID_BIT 0x04
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#define MMP_VALID(ubp) (ubp->ub_magic == UBERBLOCK_MAGIC && \
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ubp->ub_mmp_magic == MMP_MAGIC)
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#define MMP_INTERVAL_VALID(ubp) (MMP_VALID(ubp) && (ubp->ub_mmp_config & \
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MMP_INTERVAL_VALID_BIT))
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#define MMP_SEQ_VALID(ubp) (MMP_VALID(ubp) && (ubp->ub_mmp_config & \
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MMP_SEQ_VALID_BIT))
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#define MMP_FAIL_INT_VALID(ubp) (MMP_VALID(ubp) && (ubp->ub_mmp_config & \
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MMP_FAIL_INT_VALID_BIT))
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#define MMP_INTERVAL(ubp) ((ubp->ub_mmp_config & 0x00000000FFFFFF00) \
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>> 8)
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#define MMP_SEQ(ubp) ((ubp->ub_mmp_config & 0x0000FFFF00000000) \
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>> 32)
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#define MMP_FAIL_INT(ubp) ((ubp->ub_mmp_config & 0xFFFF000000000000) \
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>> 48)
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#define MMP_INTERVAL_SET(write) \
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(((uint64_t)(write & 0xFFFFFF) << 8) | MMP_INTERVAL_VALID_BIT)
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#define MMP_SEQ_SET(seq) \
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(((uint64_t)(seq & 0xFFFF) << 32) | MMP_SEQ_VALID_BIT)
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#define MMP_FAIL_INT_SET(fail) \
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(((uint64_t)(fail & 0xFFFF) << 48) | MMP_FAIL_INT_VALID_BIT)
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/*
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* RAIDZ expansion reflow information.
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*
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* 64 56 48 40 32 24 16 8 0
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* +-------+-------+-------+-------+-------+-------+-------+-------+
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* |Scratch | Reflow |
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* | State | Offset |
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* +-------+-------+-------+-------+-------+-------+-------+-------+
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*/
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typedef enum raidz_reflow_scratch_state {
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RRSS_SCRATCH_NOT_IN_USE = 0,
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RRSS_SCRATCH_VALID,
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RRSS_SCRATCH_INVALID_SYNCED,
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RRSS_SCRATCH_INVALID_SYNCED_ON_IMPORT,
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RRSS_SCRATCH_INVALID_SYNCED_REFLOW
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} raidz_reflow_scratch_state_t;
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#define RRSS_GET_OFFSET(ub) \
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BF64_GET_SB((ub)->ub_raidz_reflow_info, 0, 55, SPA_MINBLOCKSHIFT, 0)
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#define RRSS_SET_OFFSET(ub, x) \
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BF64_SET_SB((ub)->ub_raidz_reflow_info, 0, 55, SPA_MINBLOCKSHIFT, 0, x)
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#define RRSS_GET_STATE(ub) \
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BF64_GET((ub)->ub_raidz_reflow_info, 55, 9)
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#define RRSS_SET_STATE(ub, x) \
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BF64_SET((ub)->ub_raidz_reflow_info, 55, 9, x)
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#define RAIDZ_REFLOW_SET(ub, state, offset) do { \
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(ub)->ub_raidz_reflow_info = 0; \
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RRSS_SET_OFFSET(ub, offset); \
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RRSS_SET_STATE(ub, state); \
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} while (0)
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struct uberblock {
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uint64_t ub_magic; /* UBERBLOCK_MAGIC */
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uint64_t ub_version; /* SPA_VERSION */
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uint64_t ub_txg; /* txg of last sync */
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uint64_t ub_guid_sum; /* sum of all vdev guids */
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uint64_t ub_timestamp; /* UTC time of last sync */
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blkptr_t ub_rootbp; /* MOS objset_phys_t */
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/* highest SPA_VERSION supported by software that wrote this txg */
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uint64_t ub_software_version;
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/* Maybe missing in uberblocks we read, but always written */
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uint64_t ub_mmp_magic; /* MMP_MAGIC */
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/*
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* If ub_mmp_delay == 0 and ub_mmp_magic is valid, MMP is off.
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* Otherwise, nanosec since last MMP write.
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*/
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uint64_t ub_mmp_delay;
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/*
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* The ub_mmp_config contains the multihost write interval, multihost
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* fail intervals, sequence number for sub-second granularity, and
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* valid bit mask. This layout is as follows:
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*
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* 64 56 48 40 32 24 16 8 0
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* +-------+-------+-------+-------+-------+-------+-------+-------+
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* 0 | Fail Intervals| Seq | Write Interval (ms) | VALID |
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* +-------+-------+-------+-------+-------+-------+-------+-------+
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*
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* This allows a write_interval of (2^24/1000)s, over 4.5 hours
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*
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* VALID Bits:
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* - 0x01 - Write Interval (ms)
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* - 0x02 - Sequence number exists
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* - 0x04 - Fail Intervals
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* - 0xf8 - Reserved
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*/
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uint64_t ub_mmp_config;
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/*
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* ub_checkpoint_txg indicates two things about the current uberblock:
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*
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* 1] If it is not zero then this uberblock is a checkpoint. If it is
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* zero, then this uberblock is not a checkpoint.
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*
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* 2] On checkpointed uberblocks, the value of ub_checkpoint_txg is
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* the ub_txg that the uberblock had at the time we moved it to
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* the MOS config.
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*
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* The field is set when we checkpoint the uberblock and continues to
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* hold that value even after we've rewound (unlike the ub_txg that
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* is reset to a higher value).
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*
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* Besides checks used to determine whether we are reopening the
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* pool from a checkpointed uberblock [see spa_ld_select_uberblock()],
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* the value of the field is used to determine which ZIL blocks have
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* been allocated according to the ms_sm when we are rewinding to a
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* checkpoint. Specifically, if logical birth > ub_checkpoint_txg,then
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* the ZIL block is not allocated [see uses of spa_min_claim_txg()].
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*/
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uint64_t ub_checkpoint_txg;
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uint64_t ub_raidz_reflow_info;
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};
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_UBERBLOCK_IMPL_H */
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