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37f03da8ba
Deleting a clone requires finding blocks are clone-only, not shared with the snapshot. This was done by traversing the entire block tree which results in a large performance penalty for sparsely written clones. This is new method keeps track of clone blocks when they are modified in a "Livelist" so that, when it’s time to delete, the clone-specific blocks are already at hand. We see performance improvements because now deletion work is proportional to the number of clone-modified blocks, not the size of the original dataset. Reviewed-by: Sean Eric Fagan <sef@ixsystems.com> Reviewed-by: Matt Ahrens <matt@delphix.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Serapheim Dimitropoulos <serapheim@delphix.com> Signed-off-by: Sara Hartse <sara.hartse@delphix.com> Closes #8416
60 lines
1.6 KiB
C
60 lines
1.6 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 http://www.opensolaris.org/os/licensing.
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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) 2018 by Delphix. All rights reserved.
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*/
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#ifndef _SYS_BPLIST_H
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#define _SYS_BPLIST_H
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#include <sys/zfs_context.h>
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#include <sys/spa.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct bplist_entry {
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blkptr_t bpe_blk;
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list_node_t bpe_node;
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} bplist_entry_t;
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typedef struct bplist {
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kmutex_t bpl_lock;
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list_t bpl_list;
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} bplist_t;
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typedef int bplist_itor_t(void *arg, const blkptr_t *bp, dmu_tx_t *tx);
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void bplist_create(bplist_t *bpl);
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void bplist_destroy(bplist_t *bpl);
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void bplist_append(bplist_t *bpl, const blkptr_t *bp);
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void bplist_iterate(bplist_t *bpl, bplist_itor_t *func,
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void *arg, dmu_tx_t *tx);
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void bplist_clear(bplist_t *bpl);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_BPLIST_H */
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