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d90042dedb
In some cases like dsl_dataset_hold_obj() it is possible to handle those errors, so failure to hold dataset should be better than kernel panic. Some other places where these errors are still not handled but asserted should be less dangerous just as unreachable. We have a user report about pool corruption leading to assertions on these errors. Hopefully this will make behavior a bit nicer. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Closes #16836
129 lines
4.2 KiB
C
129 lines
4.2 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) 2010, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2018, 2019 by Delphix. All rights reserved.
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*/
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#ifndef _SYS_DSL_DEADLIST_H
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#define _SYS_DSL_DEADLIST_H
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#include <sys/bpobj.h>
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#include <sys/zfs_context.h>
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#include <sys/zthr.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct dmu_buf;
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struct dsl_pool;
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struct dsl_dataset;
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typedef struct dsl_deadlist_phys {
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uint64_t dl_used;
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uint64_t dl_comp;
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uint64_t dl_uncomp;
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uint64_t dl_pad[37]; /* pad out to 320b for future expansion */
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} dsl_deadlist_phys_t;
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typedef struct dsl_deadlist {
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objset_t *dl_os;
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uint64_t dl_object;
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avl_tree_t dl_tree; /* contains dsl_deadlist_entry_t */
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avl_tree_t dl_cache; /* contains dsl_deadlist_cache_entry_t */
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boolean_t dl_havetree;
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boolean_t dl_havecache;
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struct dmu_buf *dl_dbuf;
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dsl_deadlist_phys_t *dl_phys;
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kmutex_t dl_lock;
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/* if it's the old on-disk format: */
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bpobj_t dl_bpobj;
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boolean_t dl_oldfmt;
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} dsl_deadlist_t;
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typedef struct dsl_deadlist_cache_entry {
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avl_node_t dlce_node;
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uint64_t dlce_mintxg;
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uint64_t dlce_bpobj;
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uint64_t dlce_bytes;
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uint64_t dlce_comp;
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uint64_t dlce_uncomp;
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} dsl_deadlist_cache_entry_t;
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typedef struct dsl_deadlist_entry {
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avl_node_t dle_node;
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uint64_t dle_mintxg;
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bpobj_t dle_bpobj;
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} dsl_deadlist_entry_t;
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typedef struct livelist_condense_entry {
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struct dsl_dataset *ds;
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dsl_deadlist_entry_t *first;
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dsl_deadlist_entry_t *next;
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boolean_t syncing;
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boolean_t cancelled;
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} livelist_condense_entry_t;
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extern uint64_t zfs_livelist_max_entries;
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extern int zfs_livelist_min_percent_shared;
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typedef int deadlist_iter_t(void *args, dsl_deadlist_entry_t *dle);
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int dsl_deadlist_open(dsl_deadlist_t *dl, objset_t *os, uint64_t object);
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void dsl_deadlist_close(dsl_deadlist_t *dl);
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void dsl_deadlist_iterate(dsl_deadlist_t *dl, deadlist_iter_t func, void *arg);
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uint64_t dsl_deadlist_alloc(objset_t *os, dmu_tx_t *tx);
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void dsl_deadlist_free(objset_t *os, uint64_t dlobj, dmu_tx_t *tx);
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void dsl_deadlist_insert(dsl_deadlist_t *dl, const blkptr_t *bp,
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boolean_t free, dmu_tx_t *tx);
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int dsl_deadlist_insert_alloc_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx);
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int dsl_deadlist_insert_free_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx);
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void dsl_deadlist_add_key(dsl_deadlist_t *dl, uint64_t mintxg, dmu_tx_t *tx);
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void dsl_deadlist_remove_key(dsl_deadlist_t *dl, uint64_t mintxg, dmu_tx_t *tx);
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void dsl_deadlist_remove_entry(dsl_deadlist_t *dl, uint64_t mintxg,
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dmu_tx_t *tx);
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dsl_deadlist_entry_t *dsl_deadlist_first(dsl_deadlist_t *dl);
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dsl_deadlist_entry_t *dsl_deadlist_last(dsl_deadlist_t *dl);
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uint64_t dsl_deadlist_clone(dsl_deadlist_t *dl, uint64_t maxtxg,
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uint64_t mrs_obj, dmu_tx_t *tx);
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void dsl_deadlist_space(dsl_deadlist_t *dl,
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uint64_t *usedp, uint64_t *compp, uint64_t *uncompp);
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void dsl_deadlist_space_range(dsl_deadlist_t *dl,
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uint64_t mintxg, uint64_t maxtxg,
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uint64_t *usedp, uint64_t *compp, uint64_t *uncompp);
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void dsl_deadlist_merge(dsl_deadlist_t *dl, uint64_t obj, dmu_tx_t *tx);
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void dsl_deadlist_move_bpobj(dsl_deadlist_t *dl, bpobj_t *bpo, uint64_t mintxg,
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dmu_tx_t *tx);
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boolean_t dsl_deadlist_is_open(dsl_deadlist_t *dl);
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int dsl_process_sub_livelist(bpobj_t *bpobj, struct bplist *to_free,
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zthr_t *t, uint64_t *size);
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void dsl_deadlist_clear_entry(dsl_deadlist_entry_t *dle, dsl_deadlist_t *dl,
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dmu_tx_t *tx);
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void dsl_deadlist_discard_tree(dsl_deadlist_t *dl);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_DSL_DEADLIST_H */
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