2008-11-20 20:01:55 +00:00
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/*
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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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2010-05-28 20:45:14 +00:00
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* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
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2014-05-23 16:21:07 +00:00
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* Copyright (c) 2012, 2014 by Delphix. All rights reserved.
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2013-08-01 20:02:10 +00:00
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* Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
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2015-04-01 13:07:48 +00:00
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* Copyright (c) 2013, Joyent, Inc. All rights reserved.
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2015-04-02 03:44:32 +00:00
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* Copyright (c) 2014 Spectra Logic Corporation, All rights reserved.
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2015-07-10 23:45:01 +00:00
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* Copyright (c) 2015 Nexenta Systems, Inc. All rights reserved.
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2015-05-06 16:07:55 +00:00
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* Copyright (c) 2015, STRATO AG, Inc. All rights reserved.
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2008-11-20 20:01:55 +00:00
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*/
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2010-05-28 20:45:14 +00:00
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/* Portions Copyright 2010 Robert Milkowski */
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2008-11-20 20:01:55 +00:00
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#include <sys/cred.h>
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#include <sys/zfs_context.h>
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#include <sys/dmu_objset.h>
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#include <sys/dsl_dir.h>
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#include <sys/dsl_dataset.h>
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#include <sys/dsl_prop.h>
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#include <sys/dsl_pool.h>
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#include <sys/dsl_synctask.h>
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#include <sys/dsl_deleg.h>
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#include <sys/dnode.h>
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#include <sys/dbuf.h>
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#include <sys/zvol.h>
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#include <sys/dmu_tx.h>
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#include <sys/zap.h>
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#include <sys/zil.h>
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#include <sys/dmu_impl.h>
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#include <sys/zfs_ioctl.h>
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2010-05-28 20:45:14 +00:00
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#include <sys/sa.h>
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2010-08-26 21:24:34 +00:00
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#include <sys/zfs_onexit.h>
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2013-09-04 12:00:57 +00:00
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#include <sys/dsl_destroy.h>
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2015-05-06 16:07:55 +00:00
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#include <sys/vdev.h>
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2010-08-26 21:24:34 +00:00
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/*
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* Needed to close a window in dnode_move() that allows the objset to be freed
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* before it can be safely accessed.
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*/
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krwlock_t os_lock;
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2015-05-06 16:07:55 +00:00
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/*
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* Tunable to overwrite the maximum number of threads for the parallization
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* of dmu_objset_find_dp, needed to speed up the import of pools with many
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* datasets.
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* Default is 4 times the number of leaf vdevs.
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*/
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int dmu_find_threads = 0;
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static void dmu_objset_find_dp_cb(void *arg);
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2010-08-26 21:24:34 +00:00
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void
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dmu_objset_init(void)
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{
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rw_init(&os_lock, NULL, RW_DEFAULT, NULL);
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}
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void
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dmu_objset_fini(void)
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{
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rw_destroy(&os_lock);
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}
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2008-11-20 20:01:55 +00:00
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spa_t *
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dmu_objset_spa(objset_t *os)
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{
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2010-05-28 20:45:14 +00:00
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return (os->os_spa);
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2008-11-20 20:01:55 +00:00
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}
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zilog_t *
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dmu_objset_zil(objset_t *os)
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{
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2010-05-28 20:45:14 +00:00
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return (os->os_zil);
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2008-11-20 20:01:55 +00:00
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}
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dsl_pool_t *
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dmu_objset_pool(objset_t *os)
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{
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dsl_dataset_t *ds;
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|
2010-05-28 20:45:14 +00:00
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if ((ds = os->os_dsl_dataset) != NULL && ds->ds_dir)
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2008-11-20 20:01:55 +00:00
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return (ds->ds_dir->dd_pool);
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else
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2010-05-28 20:45:14 +00:00
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return (spa_get_dsl(os->os_spa));
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2008-11-20 20:01:55 +00:00
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}
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dsl_dataset_t *
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dmu_objset_ds(objset_t *os)
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{
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2010-05-28 20:45:14 +00:00
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return (os->os_dsl_dataset);
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2008-11-20 20:01:55 +00:00
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}
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dmu_objset_type_t
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dmu_objset_type(objset_t *os)
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{
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2010-05-28 20:45:14 +00:00
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return (os->os_phys->os_type);
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2008-11-20 20:01:55 +00:00
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}
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void
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dmu_objset_name(objset_t *os, char *buf)
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{
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2010-05-28 20:45:14 +00:00
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dsl_dataset_name(os->os_dsl_dataset, buf);
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2008-11-20 20:01:55 +00:00
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}
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uint64_t
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dmu_objset_id(objset_t *os)
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{
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2010-05-28 20:45:14 +00:00
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dsl_dataset_t *ds = os->os_dsl_dataset;
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2008-11-20 20:01:55 +00:00
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return (ds ? ds->ds_object : 0);
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}
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|
2014-05-23 16:21:07 +00:00
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zfs_sync_type_t
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2010-05-28 20:45:14 +00:00
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dmu_objset_syncprop(objset_t *os)
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{
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return (os->os_sync);
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}
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2014-05-23 16:21:07 +00:00
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zfs_logbias_op_t
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2010-05-28 20:45:14 +00:00
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dmu_objset_logbias(objset_t *os)
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{
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return (os->os_logbias);
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}
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2008-11-20 20:01:55 +00:00
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static void
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checksum_changed_cb(void *arg, uint64_t newval)
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{
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2010-05-28 20:45:14 +00:00
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objset_t *os = arg;
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2008-11-20 20:01:55 +00:00
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/*
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* Inheritance should have been done by now.
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*/
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ASSERT(newval != ZIO_CHECKSUM_INHERIT);
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2010-05-28 20:45:14 +00:00
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os->os_checksum = zio_checksum_select(newval, ZIO_CHECKSUM_ON_VALUE);
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2008-11-20 20:01:55 +00:00
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}
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static void
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compression_changed_cb(void *arg, uint64_t newval)
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{
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2010-05-28 20:45:14 +00:00
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objset_t *os = arg;
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2008-11-20 20:01:55 +00:00
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/*
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* Inheritance and range checking should have been done by now.
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*/
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ASSERT(newval != ZIO_COMPRESS_INHERIT);
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|
2015-07-06 01:55:32 +00:00
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os->os_compress = zio_compress_select(os->os_spa, newval,
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ZIO_COMPRESS_ON);
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2008-11-20 20:01:55 +00:00
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}
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static void
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copies_changed_cb(void *arg, uint64_t newval)
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{
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2010-05-28 20:45:14 +00:00
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objset_t *os = arg;
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2008-11-20 20:01:55 +00:00
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/*
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* Inheritance and range checking should have been done by now.
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*/
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ASSERT(newval > 0);
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2010-05-28 20:45:14 +00:00
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ASSERT(newval <= spa_max_replication(os->os_spa));
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2008-11-20 20:01:55 +00:00
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2010-05-28 20:45:14 +00:00
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os->os_copies = newval;
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}
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static void
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dedup_changed_cb(void *arg, uint64_t newval)
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{
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objset_t *os = arg;
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spa_t *spa = os->os_spa;
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enum zio_checksum checksum;
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/*
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* Inheritance should have been done by now.
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*/
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ASSERT(newval != ZIO_CHECKSUM_INHERIT);
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checksum = zio_checksum_dedup_select(spa, newval, ZIO_CHECKSUM_OFF);
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os->os_dedup_checksum = checksum & ZIO_CHECKSUM_MASK;
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os->os_dedup_verify = !!(checksum & ZIO_CHECKSUM_VERIFY);
|
2008-11-20 20:01:55 +00:00
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}
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|
2008-12-03 20:09:06 +00:00
|
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static void
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primary_cache_changed_cb(void *arg, uint64_t newval)
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{
|
2010-05-28 20:45:14 +00:00
|
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objset_t *os = arg;
|
2008-12-03 20:09:06 +00:00
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/*
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|
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* Inheritance and range checking should have been done by now.
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*/
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ASSERT(newval == ZFS_CACHE_ALL || newval == ZFS_CACHE_NONE ||
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newval == ZFS_CACHE_METADATA);
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|
2010-05-28 20:45:14 +00:00
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os->os_primary_cache = newval;
|
2008-12-03 20:09:06 +00:00
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}
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static void
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secondary_cache_changed_cb(void *arg, uint64_t newval)
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{
|
2010-05-28 20:45:14 +00:00
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objset_t *os = arg;
|
2008-12-03 20:09:06 +00:00
|
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|
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/*
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|
|
|
* Inheritance and range checking should have been done by now.
|
|
|
|
*/
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ASSERT(newval == ZFS_CACHE_ALL || newval == ZFS_CACHE_NONE ||
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|
|
newval == ZFS_CACHE_METADATA);
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|
2010-05-28 20:45:14 +00:00
|
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os->os_secondary_cache = newval;
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}
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static void
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sync_changed_cb(void *arg, uint64_t newval)
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|
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{
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objset_t *os = arg;
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/*
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* Inheritance and range checking should have been done by now.
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*/
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ASSERT(newval == ZFS_SYNC_STANDARD || newval == ZFS_SYNC_ALWAYS ||
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newval == ZFS_SYNC_DISABLED);
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os->os_sync = newval;
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if (os->os_zil)
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zil_set_sync(os->os_zil, newval);
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}
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|
2014-05-23 16:21:07 +00:00
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|
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static void
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redundant_metadata_changed_cb(void *arg, uint64_t newval)
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|
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{
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|
objset_t *os = arg;
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/*
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|
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* Inheritance and range checking should have been done by now.
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|
*/
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ASSERT(newval == ZFS_REDUNDANT_METADATA_ALL ||
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|
|
|
newval == ZFS_REDUNDANT_METADATA_MOST);
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|
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os->os_redundant_metadata = newval;
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|
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}
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|
2010-05-28 20:45:14 +00:00
|
|
|
static void
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logbias_changed_cb(void *arg, uint64_t newval)
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|
|
{
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|
|
objset_t *os = arg;
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|
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|
ASSERT(newval == ZFS_LOGBIAS_LATENCY ||
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|
|
newval == ZFS_LOGBIAS_THROUGHPUT);
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|
|
os->os_logbias = newval;
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|
|
if (os->os_zil)
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|
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zil_set_logbias(os->os_zil, newval);
|
2008-12-03 20:09:06 +00:00
|
|
|
}
|
|
|
|
|
2014-11-03 20:15:08 +00:00
|
|
|
static void
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|
|
recordsize_changed_cb(void *arg, uint64_t newval)
|
|
|
|
{
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|
|
objset_t *os = arg;
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|
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|
os->os_recordsize = newval;
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|
}
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|
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|
2008-11-20 20:01:55 +00:00
|
|
|
void
|
|
|
|
dmu_objset_byteswap(void *buf, size_t size)
|
|
|
|
{
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|
|
|
objset_phys_t *osp = buf;
|
|
|
|
|
2009-07-02 22:44:48 +00:00
|
|
|
ASSERT(size == OBJSET_OLD_PHYS_SIZE || size == sizeof (objset_phys_t));
|
2008-11-20 20:01:55 +00:00
|
|
|
dnode_byteswap(&osp->os_meta_dnode);
|
|
|
|
byteswap_uint64_array(&osp->os_zil_header, sizeof (zil_header_t));
|
|
|
|
osp->os_type = BSWAP_64(osp->os_type);
|
2009-07-02 22:44:48 +00:00
|
|
|
osp->os_flags = BSWAP_64(osp->os_flags);
|
|
|
|
if (size == sizeof (objset_phys_t)) {
|
|
|
|
dnode_byteswap(&osp->os_userused_dnode);
|
|
|
|
dnode_byteswap(&osp->os_groupused_dnode);
|
|
|
|
}
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
dmu_objset_open_impl(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp,
|
2010-05-28 20:45:14 +00:00
|
|
|
objset_t **osp)
|
2008-11-20 20:01:55 +00:00
|
|
|
{
|
2010-05-28 20:45:14 +00:00
|
|
|
objset_t *os;
|
2008-12-03 20:09:06 +00:00
|
|
|
int i, err;
|
2008-11-20 20:01:55 +00:00
|
|
|
|
|
|
|
ASSERT(ds == NULL || MUTEX_HELD(&ds->ds_opening_lock));
|
|
|
|
|
2014-11-21 00:09:39 +00:00
|
|
|
os = kmem_zalloc(sizeof (objset_t), KM_SLEEP);
|
2010-05-28 20:45:14 +00:00
|
|
|
os->os_dsl_dataset = ds;
|
|
|
|
os->os_spa = spa;
|
|
|
|
os->os_rootbp = bp;
|
|
|
|
if (!BP_IS_HOLE(os->os_rootbp)) {
|
2014-12-06 17:24:32 +00:00
|
|
|
arc_flags_t aflags = ARC_FLAG_WAIT;
|
2014-06-25 18:37:59 +00:00
|
|
|
zbookmark_phys_t zb;
|
2010-05-28 20:45:14 +00:00
|
|
|
SET_BOOKMARK(&zb, ds ? ds->ds_object : DMU_META_OBJSET,
|
|
|
|
ZB_ROOT_OBJECT, ZB_ROOT_LEVEL, ZB_ROOT_BLKID);
|
|
|
|
|
|
|
|
if (DMU_OS_IS_L2CACHEABLE(os))
|
2014-12-06 17:24:32 +00:00
|
|
|
aflags |= ARC_FLAG_L2CACHE;
|
2013-08-01 20:02:10 +00:00
|
|
|
if (DMU_OS_IS_L2COMPRESSIBLE(os))
|
2014-12-06 17:24:32 +00:00
|
|
|
aflags |= ARC_FLAG_L2COMPRESS;
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2010-05-28 20:45:14 +00:00
|
|
|
dprintf_bp(os->os_rootbp, "reading %s", "");
|
2013-07-02 20:26:24 +00:00
|
|
|
err = arc_read(NULL, spa, os->os_rootbp,
|
2010-05-28 20:45:14 +00:00
|
|
|
arc_getbuf_func, &os->os_phys_buf,
|
2008-11-20 20:01:55 +00:00
|
|
|
ZIO_PRIORITY_SYNC_READ, ZIO_FLAG_CANFAIL, &aflags, &zb);
|
2013-09-04 12:00:57 +00:00
|
|
|
if (err != 0) {
|
2010-05-28 20:45:14 +00:00
|
|
|
kmem_free(os, sizeof (objset_t));
|
2008-12-03 20:09:06 +00:00
|
|
|
/* convert checksum errors into IO errors */
|
|
|
|
if (err == ECKSUM)
|
2013-03-08 18:41:28 +00:00
|
|
|
err = SET_ERROR(EIO);
|
2008-11-20 20:01:55 +00:00
|
|
|
return (err);
|
|
|
|
}
|
2009-07-02 22:44:48 +00:00
|
|
|
|
|
|
|
/* Increase the blocksize if we are permitted. */
|
|
|
|
if (spa_version(spa) >= SPA_VERSION_USERSPACE &&
|
2010-05-28 20:45:14 +00:00
|
|
|
arc_buf_size(os->os_phys_buf) < sizeof (objset_phys_t)) {
|
2009-07-02 22:44:48 +00:00
|
|
|
arc_buf_t *buf = arc_buf_alloc(spa,
|
2010-05-28 20:45:14 +00:00
|
|
|
sizeof (objset_phys_t), &os->os_phys_buf,
|
2009-07-02 22:44:48 +00:00
|
|
|
ARC_BUFC_METADATA);
|
|
|
|
bzero(buf->b_data, sizeof (objset_phys_t));
|
2010-05-28 20:45:14 +00:00
|
|
|
bcopy(os->os_phys_buf->b_data, buf->b_data,
|
|
|
|
arc_buf_size(os->os_phys_buf));
|
|
|
|
(void) arc_buf_remove_ref(os->os_phys_buf,
|
|
|
|
&os->os_phys_buf);
|
|
|
|
os->os_phys_buf = buf;
|
2009-07-02 22:44:48 +00:00
|
|
|
}
|
|
|
|
|
2010-05-28 20:45:14 +00:00
|
|
|
os->os_phys = os->os_phys_buf->b_data;
|
|
|
|
os->os_flags = os->os_phys->os_flags;
|
2008-11-20 20:01:55 +00:00
|
|
|
} else {
|
2009-07-02 22:44:48 +00:00
|
|
|
int size = spa_version(spa) >= SPA_VERSION_USERSPACE ?
|
|
|
|
sizeof (objset_phys_t) : OBJSET_OLD_PHYS_SIZE;
|
2010-05-28 20:45:14 +00:00
|
|
|
os->os_phys_buf = arc_buf_alloc(spa, size,
|
|
|
|
&os->os_phys_buf, ARC_BUFC_METADATA);
|
|
|
|
os->os_phys = os->os_phys_buf->b_data;
|
|
|
|
bzero(os->os_phys, size);
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Note: the changed_cb will be called once before the register
|
|
|
|
* func returns, thus changing the checksum/compression from the
|
2008-12-03 20:09:06 +00:00
|
|
|
* default (fletcher2/off). Snapshots don't need to know about
|
|
|
|
* checksum/compression/copies.
|
2008-11-20 20:01:55 +00:00
|
|
|
*/
|
2014-06-05 21:19:08 +00:00
|
|
|
if (ds != NULL) {
|
2013-09-04 12:00:57 +00:00
|
|
|
err = dsl_prop_register(ds,
|
|
|
|
zfs_prop_to_name(ZFS_PROP_PRIMARYCACHE),
|
2010-05-28 20:45:14 +00:00
|
|
|
primary_cache_changed_cb, os);
|
2013-09-04 12:00:57 +00:00
|
|
|
if (err == 0) {
|
|
|
|
err = dsl_prop_register(ds,
|
|
|
|
zfs_prop_to_name(ZFS_PROP_SECONDARYCACHE),
|
2010-05-28 20:45:14 +00:00
|
|
|
secondary_cache_changed_cb, os);
|
2013-09-04 12:00:57 +00:00
|
|
|
}
|
2015-04-02 03:44:32 +00:00
|
|
|
if (!ds->ds_is_snapshot) {
|
2013-09-04 12:00:57 +00:00
|
|
|
if (err == 0) {
|
|
|
|
err = dsl_prop_register(ds,
|
|
|
|
zfs_prop_to_name(ZFS_PROP_CHECKSUM),
|
2010-05-28 20:45:14 +00:00
|
|
|
checksum_changed_cb, os);
|
2013-09-04 12:00:57 +00:00
|
|
|
}
|
|
|
|
if (err == 0) {
|
|
|
|
err = dsl_prop_register(ds,
|
|
|
|
zfs_prop_to_name(ZFS_PROP_COMPRESSION),
|
2010-05-28 20:45:14 +00:00
|
|
|
compression_changed_cb, os);
|
2013-09-04 12:00:57 +00:00
|
|
|
}
|
|
|
|
if (err == 0) {
|
|
|
|
err = dsl_prop_register(ds,
|
|
|
|
zfs_prop_to_name(ZFS_PROP_COPIES),
|
2010-05-28 20:45:14 +00:00
|
|
|
copies_changed_cb, os);
|
2013-09-04 12:00:57 +00:00
|
|
|
}
|
|
|
|
if (err == 0) {
|
|
|
|
err = dsl_prop_register(ds,
|
|
|
|
zfs_prop_to_name(ZFS_PROP_DEDUP),
|
2010-05-28 20:45:14 +00:00
|
|
|
dedup_changed_cb, os);
|
2013-09-04 12:00:57 +00:00
|
|
|
}
|
|
|
|
if (err == 0) {
|
|
|
|
err = dsl_prop_register(ds,
|
|
|
|
zfs_prop_to_name(ZFS_PROP_LOGBIAS),
|
2010-05-28 20:45:14 +00:00
|
|
|
logbias_changed_cb, os);
|
2013-09-04 12:00:57 +00:00
|
|
|
}
|
|
|
|
if (err == 0) {
|
|
|
|
err = dsl_prop_register(ds,
|
|
|
|
zfs_prop_to_name(ZFS_PROP_SYNC),
|
2010-05-28 20:45:14 +00:00
|
|
|
sync_changed_cb, os);
|
2013-09-04 12:00:57 +00:00
|
|
|
}
|
2014-05-23 16:21:07 +00:00
|
|
|
if (err == 0) {
|
|
|
|
err = dsl_prop_register(ds,
|
|
|
|
zfs_prop_to_name(
|
|
|
|
ZFS_PROP_REDUNDANT_METADATA),
|
|
|
|
redundant_metadata_changed_cb, os);
|
|
|
|
}
|
2014-11-03 20:15:08 +00:00
|
|
|
if (err == 0) {
|
|
|
|
err = dsl_prop_register(ds,
|
|
|
|
zfs_prop_to_name(ZFS_PROP_RECORDSIZE),
|
|
|
|
recordsize_changed_cb, os);
|
|
|
|
}
|
2008-12-03 20:09:06 +00:00
|
|
|
}
|
2013-09-04 12:00:57 +00:00
|
|
|
if (err != 0) {
|
2010-05-28 20:45:14 +00:00
|
|
|
VERIFY(arc_buf_remove_ref(os->os_phys_buf,
|
2013-09-04 12:00:57 +00:00
|
|
|
&os->os_phys_buf));
|
2010-05-28 20:45:14 +00:00
|
|
|
kmem_free(os, sizeof (objset_t));
|
2008-11-20 20:01:55 +00:00
|
|
|
return (err);
|
|
|
|
}
|
2014-06-05 21:19:08 +00:00
|
|
|
} else {
|
2008-11-20 20:01:55 +00:00
|
|
|
/* It's the meta-objset. */
|
2010-05-28 20:45:14 +00:00
|
|
|
os->os_checksum = ZIO_CHECKSUM_FLETCHER_4;
|
2015-07-06 01:55:32 +00:00
|
|
|
os->os_compress = ZIO_COMPRESS_ON;
|
2010-05-28 20:45:14 +00:00
|
|
|
os->os_copies = spa_max_replication(spa);
|
|
|
|
os->os_dedup_checksum = ZIO_CHECKSUM_OFF;
|
2014-05-23 16:21:07 +00:00
|
|
|
os->os_dedup_verify = B_FALSE;
|
|
|
|
os->os_logbias = ZFS_LOGBIAS_LATENCY;
|
|
|
|
os->os_sync = ZFS_SYNC_STANDARD;
|
2010-05-28 20:45:14 +00:00
|
|
|
os->os_primary_cache = ZFS_CACHE_ALL;
|
|
|
|
os->os_secondary_cache = ZFS_CACHE_ALL;
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
2015-04-02 03:44:32 +00:00
|
|
|
if (ds == NULL || !ds->ds_is_snapshot)
|
2010-08-26 21:24:34 +00:00
|
|
|
os->os_zil_header = os->os_phys->os_zil_header;
|
2010-05-28 20:45:14 +00:00
|
|
|
os->os_zil = zil_alloc(os, &os->os_zil_header);
|
2008-11-20 20:01:55 +00:00
|
|
|
|
|
|
|
for (i = 0; i < TXG_SIZE; i++) {
|
2010-05-28 20:45:14 +00:00
|
|
|
list_create(&os->os_dirty_dnodes[i], sizeof (dnode_t),
|
2008-11-20 20:01:55 +00:00
|
|
|
offsetof(dnode_t, dn_dirty_link[i]));
|
2010-05-28 20:45:14 +00:00
|
|
|
list_create(&os->os_free_dnodes[i], sizeof (dnode_t),
|
2008-11-20 20:01:55 +00:00
|
|
|
offsetof(dnode_t, dn_dirty_link[i]));
|
|
|
|
}
|
2010-05-28 20:45:14 +00:00
|
|
|
list_create(&os->os_dnodes, sizeof (dnode_t),
|
2008-11-20 20:01:55 +00:00
|
|
|
offsetof(dnode_t, dn_link));
|
2010-05-28 20:45:14 +00:00
|
|
|
list_create(&os->os_downgraded_dbufs, sizeof (dmu_buf_impl_t),
|
2008-11-20 20:01:55 +00:00
|
|
|
offsetof(dmu_buf_impl_t, db_link));
|
|
|
|
|
2015-04-02 03:44:32 +00:00
|
|
|
list_link_init(&os->os_evicting_node);
|
|
|
|
|
2010-05-28 20:45:14 +00:00
|
|
|
mutex_init(&os->os_lock, NULL, MUTEX_DEFAULT, NULL);
|
|
|
|
mutex_init(&os->os_obj_lock, NULL, MUTEX_DEFAULT, NULL);
|
|
|
|
mutex_init(&os->os_user_ptr_lock, NULL, MUTEX_DEFAULT, NULL);
|
|
|
|
|
2015-04-02 03:44:32 +00:00
|
|
|
dnode_special_open(os, &os->os_phys->os_meta_dnode,
|
|
|
|
DMU_META_DNODE_OBJECT, &os->os_meta_dnode);
|
2010-05-28 20:45:14 +00:00
|
|
|
if (arc_buf_size(os->os_phys_buf) >= sizeof (objset_phys_t)) {
|
2015-04-02 03:44:32 +00:00
|
|
|
dnode_special_open(os, &os->os_phys->os_userused_dnode,
|
|
|
|
DMU_USERUSED_OBJECT, &os->os_userused_dnode);
|
|
|
|
dnode_special_open(os, &os->os_phys->os_groupused_dnode,
|
|
|
|
DMU_GROUPUSED_OBJECT, &os->os_groupused_dnode);
|
2009-07-02 22:44:48 +00:00
|
|
|
}
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2010-05-28 20:45:14 +00:00
|
|
|
*osp = os;
|
2008-11-20 20:01:55 +00:00
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
2010-05-28 20:45:14 +00:00
|
|
|
int
|
|
|
|
dmu_objset_from_ds(dsl_dataset_t *ds, objset_t **osp)
|
2008-11-20 20:01:55 +00:00
|
|
|
{
|
2010-05-28 20:45:14 +00:00
|
|
|
int err = 0;
|
2008-11-20 20:01:55 +00:00
|
|
|
|
|
|
|
mutex_enter(&ds->ds_opening_lock);
|
2014-06-05 21:19:08 +00:00
|
|
|
if (ds->ds_objset == NULL) {
|
|
|
|
objset_t *os;
|
2008-11-20 20:01:55 +00:00
|
|
|
err = dmu_objset_open_impl(dsl_dataset_get_spa(ds),
|
2014-06-05 21:19:08 +00:00
|
|
|
ds, dsl_dataset_get_blkptr(ds), &os);
|
|
|
|
|
|
|
|
if (err == 0) {
|
|
|
|
mutex_enter(&ds->ds_lock);
|
|
|
|
ASSERT(ds->ds_objset == NULL);
|
|
|
|
ds->ds_objset = os;
|
|
|
|
mutex_exit(&ds->ds_lock);
|
|
|
|
}
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
2014-06-05 21:19:08 +00:00
|
|
|
*osp = ds->ds_objset;
|
2008-11-20 20:01:55 +00:00
|
|
|
mutex_exit(&ds->ds_opening_lock);
|
2010-05-28 20:45:14 +00:00
|
|
|
return (err);
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
/*
|
|
|
|
* Holds the pool while the objset is held. Therefore only one objset
|
|
|
|
* can be held at a time.
|
|
|
|
*/
|
2008-11-20 20:01:55 +00:00
|
|
|
int
|
2010-05-28 20:45:14 +00:00
|
|
|
dmu_objset_hold(const char *name, void *tag, objset_t **osp)
|
2008-11-20 20:01:55 +00:00
|
|
|
{
|
2013-09-04 12:00:57 +00:00
|
|
|
dsl_pool_t *dp;
|
2010-05-28 20:45:14 +00:00
|
|
|
dsl_dataset_t *ds;
|
2008-11-20 20:01:55 +00:00
|
|
|
int err;
|
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
err = dsl_pool_hold(name, tag, &dp);
|
|
|
|
if (err != 0)
|
|
|
|
return (err);
|
|
|
|
err = dsl_dataset_hold(dp, name, tag, &ds);
|
|
|
|
if (err != 0) {
|
|
|
|
dsl_pool_rele(dp, tag);
|
2010-05-28 20:45:14 +00:00
|
|
|
return (err);
|
2013-09-04 12:00:57 +00:00
|
|
|
}
|
2010-05-28 20:45:14 +00:00
|
|
|
|
|
|
|
err = dmu_objset_from_ds(ds, osp);
|
2013-09-04 12:00:57 +00:00
|
|
|
if (err != 0) {
|
2010-05-28 20:45:14 +00:00
|
|
|
dsl_dataset_rele(ds, tag);
|
2013-09-04 12:00:57 +00:00
|
|
|
dsl_pool_rele(dp, tag);
|
|
|
|
}
|
2010-05-28 20:45:14 +00:00
|
|
|
|
2008-11-20 20:01:55 +00:00
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
|
2015-05-06 16:07:55 +00:00
|
|
|
static int
|
|
|
|
dmu_objset_own_impl(dsl_dataset_t *ds, dmu_objset_type_t type,
|
|
|
|
boolean_t readonly, void *tag, objset_t **osp)
|
|
|
|
{
|
|
|
|
int err;
|
|
|
|
|
|
|
|
err = dmu_objset_from_ds(ds, osp);
|
|
|
|
if (err != 0) {
|
|
|
|
dsl_dataset_disown(ds, tag);
|
|
|
|
} else if (type != DMU_OST_ANY && type != (*osp)->os_phys->os_type) {
|
|
|
|
dsl_dataset_disown(ds, tag);
|
|
|
|
return (SET_ERROR(EINVAL));
|
|
|
|
} else if (!readonly && dsl_dataset_is_snapshot(ds)) {
|
|
|
|
dsl_dataset_disown(ds, tag);
|
|
|
|
return (SET_ERROR(EROFS));
|
|
|
|
}
|
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
/*
|
|
|
|
* dsl_pool must not be held when this is called.
|
|
|
|
* Upon successful return, there will be a longhold on the dataset,
|
|
|
|
* and the dsl_pool will not be held.
|
|
|
|
*/
|
2008-11-20 20:01:55 +00:00
|
|
|
int
|
2010-05-28 20:45:14 +00:00
|
|
|
dmu_objset_own(const char *name, dmu_objset_type_t type,
|
|
|
|
boolean_t readonly, void *tag, objset_t **osp)
|
2008-11-20 20:01:55 +00:00
|
|
|
{
|
2013-09-04 12:00:57 +00:00
|
|
|
dsl_pool_t *dp;
|
2008-11-20 20:01:55 +00:00
|
|
|
dsl_dataset_t *ds;
|
|
|
|
int err;
|
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
err = dsl_pool_hold(name, FTAG, &dp);
|
|
|
|
if (err != 0)
|
|
|
|
return (err);
|
|
|
|
err = dsl_dataset_own(dp, name, tag, &ds);
|
|
|
|
if (err != 0) {
|
|
|
|
dsl_pool_rele(dp, FTAG);
|
2008-11-20 20:01:55 +00:00
|
|
|
return (err);
|
2013-09-04 12:00:57 +00:00
|
|
|
}
|
2015-05-06 16:07:55 +00:00
|
|
|
err = dmu_objset_own_impl(ds, type, readonly, tag, osp);
|
2013-09-04 12:00:57 +00:00
|
|
|
dsl_pool_rele(dp, FTAG);
|
2015-05-06 16:07:55 +00:00
|
|
|
|
2008-11-20 20:01:55 +00:00
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
|
2015-05-06 16:07:55 +00:00
|
|
|
int
|
|
|
|
dmu_objset_own_obj(dsl_pool_t *dp, uint64_t obj, dmu_objset_type_t type,
|
|
|
|
boolean_t readonly, void *tag, objset_t **osp)
|
|
|
|
{
|
|
|
|
dsl_dataset_t *ds;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
err = dsl_dataset_own_obj(dp, obj, tag, &ds);
|
|
|
|
if (err != 0)
|
|
|
|
return (err);
|
|
|
|
|
|
|
|
return (dmu_objset_own_impl(ds, type, readonly, tag, osp));
|
|
|
|
}
|
|
|
|
|
2008-11-20 20:01:55 +00:00
|
|
|
void
|
2010-05-28 20:45:14 +00:00
|
|
|
dmu_objset_rele(objset_t *os, void *tag)
|
2008-11-20 20:01:55 +00:00
|
|
|
{
|
2013-09-04 12:00:57 +00:00
|
|
|
dsl_pool_t *dp = dmu_objset_pool(os);
|
2010-05-28 20:45:14 +00:00
|
|
|
dsl_dataset_rele(os->os_dsl_dataset, tag);
|
2013-09-04 12:00:57 +00:00
|
|
|
dsl_pool_rele(dp, tag);
|
2010-05-28 20:45:14 +00:00
|
|
|
}
|
2008-12-03 20:09:06 +00:00
|
|
|
|
2013-07-27 17:50:07 +00:00
|
|
|
/*
|
|
|
|
* When we are called, os MUST refer to an objset associated with a dataset
|
|
|
|
* that is owned by 'tag'; that is, is held and long held by 'tag' and ds_owner
|
|
|
|
* == tag. We will then release and reacquire ownership of the dataset while
|
|
|
|
* holding the pool config_rwlock to avoid intervening namespace or ownership
|
|
|
|
* changes may occur.
|
|
|
|
*
|
|
|
|
* This exists solely to accommodate zfs_ioc_userspace_upgrade()'s desire to
|
|
|
|
* release the hold on its dataset and acquire a new one on the dataset of the
|
|
|
|
* same name so that it can be partially torn down and reconstructed.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
dmu_objset_refresh_ownership(objset_t *os, void *tag)
|
|
|
|
{
|
|
|
|
dsl_pool_t *dp;
|
|
|
|
dsl_dataset_t *ds, *newds;
|
|
|
|
char name[MAXNAMELEN];
|
|
|
|
|
|
|
|
ds = os->os_dsl_dataset;
|
|
|
|
VERIFY3P(ds, !=, NULL);
|
|
|
|
VERIFY3P(ds->ds_owner, ==, tag);
|
|
|
|
VERIFY(dsl_dataset_long_held(ds));
|
|
|
|
|
|
|
|
dsl_dataset_name(ds, name);
|
|
|
|
dp = dmu_objset_pool(os);
|
|
|
|
dsl_pool_config_enter(dp, FTAG);
|
|
|
|
dmu_objset_disown(os, tag);
|
|
|
|
VERIFY0(dsl_dataset_own(dp, name, tag, &newds));
|
|
|
|
VERIFY3P(newds, ==, os->os_dsl_dataset);
|
|
|
|
dsl_pool_config_exit(dp, FTAG);
|
|
|
|
}
|
|
|
|
|
2010-05-28 20:45:14 +00:00
|
|
|
void
|
|
|
|
dmu_objset_disown(objset_t *os, void *tag)
|
|
|
|
{
|
|
|
|
dsl_dataset_disown(os->os_dsl_dataset, tag);
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
void
|
2008-11-20 20:01:55 +00:00
|
|
|
dmu_objset_evict_dbufs(objset_t *os)
|
|
|
|
{
|
2015-04-02 03:44:32 +00:00
|
|
|
dnode_t *dn_marker;
|
2008-11-20 20:01:55 +00:00
|
|
|
dnode_t *dn;
|
|
|
|
|
2015-04-02 03:44:32 +00:00
|
|
|
dn_marker = kmem_alloc(sizeof (dnode_t), KM_SLEEP);
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2015-04-02 03:44:32 +00:00
|
|
|
mutex_enter(&os->os_lock);
|
|
|
|
dn = list_head(&os->os_dnodes);
|
|
|
|
while (dn != NULL) {
|
|
|
|
/*
|
|
|
|
* Skip dnodes without holds. We have to do this dance
|
|
|
|
* because dnode_add_ref() only works if there is already a
|
|
|
|
* hold. If the dnode has no holds, then it has no dbufs.
|
|
|
|
*/
|
|
|
|
if (dnode_add_ref(dn, FTAG)) {
|
|
|
|
list_insert_after(&os->os_dnodes, dn, dn_marker);
|
|
|
|
mutex_exit(&os->os_lock);
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2015-04-02 03:44:32 +00:00
|
|
|
dnode_evict_dbufs(dn);
|
|
|
|
dnode_rele(dn, FTAG);
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2015-04-02 03:44:32 +00:00
|
|
|
mutex_enter(&os->os_lock);
|
|
|
|
dn = list_next(&os->os_dnodes, dn_marker);
|
|
|
|
list_remove(&os->os_dnodes, dn_marker);
|
|
|
|
} else {
|
|
|
|
dn = list_next(&os->os_dnodes, dn);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
mutex_exit(&os->os_lock);
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2015-04-02 03:44:32 +00:00
|
|
|
kmem_free(dn_marker, sizeof (dnode_t));
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2015-04-02 03:44:32 +00:00
|
|
|
if (DMU_USERUSED_DNODE(os) != NULL) {
|
|
|
|
dnode_evict_dbufs(DMU_GROUPUSED_DNODE(os));
|
|
|
|
dnode_evict_dbufs(DMU_USERUSED_DNODE(os));
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
2015-04-02 03:44:32 +00:00
|
|
|
dnode_evict_dbufs(DMU_META_DNODE(os));
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
2015-04-02 03:44:32 +00:00
|
|
|
/*
|
|
|
|
* Objset eviction processing is split into into two pieces.
|
|
|
|
* The first marks the objset as evicting, evicts any dbufs that
|
|
|
|
* have a refcount of zero, and then queues up the objset for the
|
|
|
|
* second phase of eviction. Once os->os_dnodes has been cleared by
|
|
|
|
* dnode_buf_pageout()->dnode_destroy(), the second phase is executed.
|
|
|
|
* The second phase closes the special dnodes, dequeues the objset from
|
|
|
|
* the list of those undergoing eviction, and finally frees the objset.
|
|
|
|
*
|
|
|
|
* NOTE: Due to asynchronous eviction processing (invocation of
|
|
|
|
* dnode_buf_pageout()), it is possible for the meta dnode for the
|
|
|
|
* objset to have no holds even though os->os_dnodes is not empty.
|
|
|
|
*/
|
2008-11-20 20:01:55 +00:00
|
|
|
void
|
2010-05-28 20:45:14 +00:00
|
|
|
dmu_objset_evict(objset_t *os)
|
2008-11-20 20:01:55 +00:00
|
|
|
{
|
2010-08-26 16:52:39 +00:00
|
|
|
int t;
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2013-08-28 11:45:09 +00:00
|
|
|
dsl_dataset_t *ds = os->os_dsl_dataset;
|
|
|
|
|
2010-08-26 16:52:39 +00:00
|
|
|
for (t = 0; t < TXG_SIZE; t++)
|
2010-05-28 20:45:14 +00:00
|
|
|
ASSERT(!dmu_objset_is_dirty(os, t));
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2015-11-04 23:00:58 +00:00
|
|
|
if (ds)
|
|
|
|
dsl_prop_unregister_all(ds, os);
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2010-05-28 20:45:14 +00:00
|
|
|
if (os->os_sa)
|
|
|
|
sa_tear_down(os);
|
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
dmu_objset_evict_dbufs(os);
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2015-04-02 03:44:32 +00:00
|
|
|
mutex_enter(&os->os_lock);
|
|
|
|
spa_evicting_os_register(os->os_spa, os);
|
|
|
|
if (list_is_empty(&os->os_dnodes)) {
|
|
|
|
mutex_exit(&os->os_lock);
|
|
|
|
dmu_objset_evict_done(os);
|
|
|
|
} else {
|
|
|
|
mutex_exit(&os->os_lock);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
dmu_objset_evict_done(objset_t *os)
|
|
|
|
{
|
|
|
|
ASSERT3P(list_head(&os->os_dnodes), ==, NULL);
|
|
|
|
|
2010-08-26 21:24:34 +00:00
|
|
|
dnode_special_close(&os->os_meta_dnode);
|
|
|
|
if (DMU_USERUSED_DNODE(os)) {
|
|
|
|
dnode_special_close(&os->os_userused_dnode);
|
|
|
|
dnode_special_close(&os->os_groupused_dnode);
|
2009-07-02 22:44:48 +00:00
|
|
|
}
|
2010-05-28 20:45:14 +00:00
|
|
|
zil_free(os->os_zil);
|
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
VERIFY(arc_buf_remove_ref(os->os_phys_buf, &os->os_phys_buf));
|
2010-08-26 21:24:34 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* This is a barrier to prevent the objset from going away in
|
|
|
|
* dnode_move() until we can safely ensure that the objset is still in
|
|
|
|
* use. We consider the objset valid before the barrier and invalid
|
|
|
|
* after the barrier.
|
|
|
|
*/
|
|
|
|
rw_enter(&os_lock, RW_READER);
|
|
|
|
rw_exit(&os_lock);
|
|
|
|
|
2010-05-28 20:45:14 +00:00
|
|
|
mutex_destroy(&os->os_lock);
|
|
|
|
mutex_destroy(&os->os_obj_lock);
|
|
|
|
mutex_destroy(&os->os_user_ptr_lock);
|
2015-04-02 03:44:32 +00:00
|
|
|
spa_evicting_os_deregister(os->os_spa, os);
|
2010-05-28 20:45:14 +00:00
|
|
|
kmem_free(os, sizeof (objset_t));
|
|
|
|
}
|
2009-07-02 22:44:48 +00:00
|
|
|
|
2010-05-28 20:45:14 +00:00
|
|
|
timestruc_t
|
|
|
|
dmu_objset_snap_cmtime(objset_t *os)
|
|
|
|
{
|
|
|
|
return (dsl_dir_snap_cmtime(os->os_dsl_dataset->ds_dir));
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* called from dsl for meta-objset */
|
2010-05-28 20:45:14 +00:00
|
|
|
objset_t *
|
2008-11-20 20:01:55 +00:00
|
|
|
dmu_objset_create_impl(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp,
|
|
|
|
dmu_objset_type_t type, dmu_tx_t *tx)
|
|
|
|
{
|
2010-05-28 20:45:14 +00:00
|
|
|
objset_t *os;
|
2008-11-20 20:01:55 +00:00
|
|
|
dnode_t *mdn;
|
|
|
|
|
|
|
|
ASSERT(dmu_tx_is_syncing(tx));
|
2013-09-04 12:00:57 +00:00
|
|
|
|
2010-08-26 21:24:34 +00:00
|
|
|
if (ds != NULL)
|
2013-09-04 12:00:57 +00:00
|
|
|
VERIFY0(dmu_objset_from_ds(ds, &os));
|
2010-08-26 21:24:34 +00:00
|
|
|
else
|
2013-09-04 12:00:57 +00:00
|
|
|
VERIFY0(dmu_objset_open_impl(spa, NULL, bp, &os));
|
2010-08-26 21:24:34 +00:00
|
|
|
|
|
|
|
mdn = DMU_META_DNODE(os);
|
2008-11-20 20:01:55 +00:00
|
|
|
|
|
|
|
dnode_allocate(mdn, DMU_OT_DNODE, 1 << DNODE_BLOCK_SHIFT,
|
|
|
|
DN_MAX_INDBLKSHIFT, DMU_OT_NONE, 0, tx);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* We don't want to have to increase the meta-dnode's nlevels
|
|
|
|
* later, because then we could do it in quescing context while
|
|
|
|
* we are also accessing it in open context.
|
|
|
|
*
|
|
|
|
* This precaution is not necessary for the MOS (ds == NULL),
|
|
|
|
* because the MOS is only updated in syncing context.
|
|
|
|
* This is most fortunate: the MOS is the only objset that
|
|
|
|
* needs to be synced multiple times as spa_sync() iterates
|
|
|
|
* to convergence, so minimizing its dn_nlevels matters.
|
|
|
|
*/
|
|
|
|
if (ds != NULL) {
|
|
|
|
int levels = 1;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Determine the number of levels necessary for the meta-dnode
|
|
|
|
* to contain DN_MAX_OBJECT dnodes.
|
|
|
|
*/
|
|
|
|
while ((uint64_t)mdn->dn_nblkptr << (mdn->dn_datablkshift +
|
|
|
|
(levels - 1) * (mdn->dn_indblkshift - SPA_BLKPTRSHIFT)) <
|
|
|
|
DN_MAX_OBJECT * sizeof (dnode_phys_t))
|
|
|
|
levels++;
|
|
|
|
|
|
|
|
mdn->dn_next_nlevels[tx->tx_txg & TXG_MASK] =
|
|
|
|
mdn->dn_nlevels = levels;
|
|
|
|
}
|
|
|
|
|
|
|
|
ASSERT(type != DMU_OST_NONE);
|
|
|
|
ASSERT(type != DMU_OST_ANY);
|
|
|
|
ASSERT(type < DMU_OST_NUMTYPES);
|
2010-05-28 20:45:14 +00:00
|
|
|
os->os_phys->os_type = type;
|
|
|
|
if (dmu_objset_userused_enabled(os)) {
|
|
|
|
os->os_phys->os_flags |= OBJSET_FLAG_USERACCOUNTING_COMPLETE;
|
|
|
|
os->os_flags = os->os_phys->os_flags;
|
2009-07-02 22:44:48 +00:00
|
|
|
}
|
2008-11-20 20:01:55 +00:00
|
|
|
|
|
|
|
dsl_dataset_dirty(ds, tx);
|
|
|
|
|
2010-05-28 20:45:14 +00:00
|
|
|
return (os);
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
typedef struct dmu_objset_create_arg {
|
|
|
|
const char *doca_name;
|
|
|
|
cred_t *doca_cred;
|
|
|
|
void (*doca_userfunc)(objset_t *os, void *arg,
|
|
|
|
cred_t *cr, dmu_tx_t *tx);
|
|
|
|
void *doca_userarg;
|
|
|
|
dmu_objset_type_t doca_type;
|
|
|
|
uint64_t doca_flags;
|
|
|
|
} dmu_objset_create_arg_t;
|
2008-11-20 20:01:55 +00:00
|
|
|
|
|
|
|
/*ARGSUSED*/
|
|
|
|
static int
|
2013-09-04 12:00:57 +00:00
|
|
|
dmu_objset_create_check(void *arg, dmu_tx_t *tx)
|
2008-11-20 20:01:55 +00:00
|
|
|
{
|
2013-09-04 12:00:57 +00:00
|
|
|
dmu_objset_create_arg_t *doca = arg;
|
|
|
|
dsl_pool_t *dp = dmu_tx_pool(tx);
|
|
|
|
dsl_dir_t *pdd;
|
|
|
|
const char *tail;
|
|
|
|
int error;
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
if (strchr(doca->doca_name, '@') != NULL)
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINVAL));
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
error = dsl_dir_hold(dp, doca->doca_name, FTAG, &pdd, &tail);
|
|
|
|
if (error != 0)
|
|
|
|
return (error);
|
|
|
|
if (tail == NULL) {
|
|
|
|
dsl_dir_rele(pdd, FTAG);
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EEXIST));
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
2015-04-01 13:07:48 +00:00
|
|
|
error = dsl_fs_ss_limit_check(pdd, 1, ZFS_PROP_FILESYSTEM_LIMIT, NULL,
|
|
|
|
doca->doca_cred);
|
2013-09-04 12:00:57 +00:00
|
|
|
dsl_dir_rele(pdd, FTAG);
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2015-04-01 13:07:48 +00:00
|
|
|
return (error);
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
2013-09-04 12:00:57 +00:00
|
|
|
dmu_objset_create_sync(void *arg, dmu_tx_t *tx)
|
2008-11-20 20:01:55 +00:00
|
|
|
{
|
2013-09-04 12:00:57 +00:00
|
|
|
dmu_objset_create_arg_t *doca = arg;
|
|
|
|
dsl_pool_t *dp = dmu_tx_pool(tx);
|
|
|
|
dsl_dir_t *pdd;
|
|
|
|
const char *tail;
|
2013-08-28 11:45:09 +00:00
|
|
|
dsl_dataset_t *ds;
|
2013-09-04 12:00:57 +00:00
|
|
|
uint64_t obj;
|
2013-08-28 11:45:09 +00:00
|
|
|
blkptr_t *bp;
|
2013-09-04 12:00:57 +00:00
|
|
|
objset_t *os;
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
VERIFY0(dsl_dir_hold(dp, doca->doca_name, FTAG, &pdd, &tail));
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
obj = dsl_dataset_create_sync(pdd, tail, NULL, doca->doca_flags,
|
|
|
|
doca->doca_cred, tx);
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
VERIFY0(dsl_dataset_hold_obj(pdd->dd_pool, obj, FTAG, &ds));
|
2013-08-28 11:45:09 +00:00
|
|
|
bp = dsl_dataset_get_blkptr(ds);
|
2013-09-04 12:00:57 +00:00
|
|
|
os = dmu_objset_create_impl(pdd->dd_pool->dp_spa,
|
|
|
|
ds, bp, doca->doca_type, tx);
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
if (doca->doca_userfunc != NULL) {
|
|
|
|
doca->doca_userfunc(os, doca->doca_userarg,
|
|
|
|
doca->doca_cred, tx);
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
spa_history_log_internal_ds(ds, "create", tx, "");
|
2013-08-28 11:45:09 +00:00
|
|
|
dsl_dataset_rele(ds, FTAG);
|
2013-09-04 12:00:57 +00:00
|
|
|
dsl_dir_rele(pdd, FTAG);
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
int
|
2010-05-28 20:45:14 +00:00
|
|
|
dmu_objset_create(const char *name, dmu_objset_type_t type, uint64_t flags,
|
2008-11-20 20:01:55 +00:00
|
|
|
void (*func)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx), void *arg)
|
|
|
|
{
|
2013-09-04 12:00:57 +00:00
|
|
|
dmu_objset_create_arg_t doca;
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
doca.doca_name = name;
|
|
|
|
doca.doca_cred = CRED();
|
|
|
|
doca.doca_flags = flags;
|
|
|
|
doca.doca_userfunc = func;
|
|
|
|
doca.doca_userarg = arg;
|
|
|
|
doca.doca_type = type;
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
return (dsl_sync_task(name,
|
2014-11-03 20:28:43 +00:00
|
|
|
dmu_objset_create_check, dmu_objset_create_sync, &doca,
|
|
|
|
5, ZFS_SPACE_CHECK_NORMAL));
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
typedef struct dmu_objset_clone_arg {
|
|
|
|
const char *doca_clone;
|
|
|
|
const char *doca_origin;
|
|
|
|
cred_t *doca_cred;
|
|
|
|
} dmu_objset_clone_arg_t;
|
|
|
|
|
|
|
|
/*ARGSUSED*/
|
|
|
|
static int
|
|
|
|
dmu_objset_clone_check(void *arg, dmu_tx_t *tx)
|
2008-11-20 20:01:55 +00:00
|
|
|
{
|
2013-09-04 12:00:57 +00:00
|
|
|
dmu_objset_clone_arg_t *doca = arg;
|
2010-05-28 20:45:14 +00:00
|
|
|
dsl_dir_t *pdd;
|
|
|
|
const char *tail;
|
2013-09-04 12:00:57 +00:00
|
|
|
int error;
|
|
|
|
dsl_dataset_t *origin;
|
|
|
|
dsl_pool_t *dp = dmu_tx_pool(tx);
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
if (strchr(doca->doca_clone, '@') != NULL)
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINVAL));
|
2013-09-04 12:00:57 +00:00
|
|
|
|
|
|
|
error = dsl_dir_hold(dp, doca->doca_clone, FTAG, &pdd, &tail);
|
|
|
|
if (error != 0)
|
|
|
|
return (error);
|
2010-05-28 20:45:14 +00:00
|
|
|
if (tail == NULL) {
|
2013-09-04 12:00:57 +00:00
|
|
|
dsl_dir_rele(pdd, FTAG);
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EEXIST));
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
2015-07-10 23:45:01 +00:00
|
|
|
|
2015-04-01 13:07:48 +00:00
|
|
|
error = dsl_fs_ss_limit_check(pdd, 1, ZFS_PROP_FILESYSTEM_LIMIT, NULL,
|
|
|
|
doca->doca_cred);
|
|
|
|
if (error != 0) {
|
|
|
|
dsl_dir_rele(pdd, FTAG);
|
|
|
|
return (SET_ERROR(EDQUOT));
|
|
|
|
}
|
2013-09-04 12:00:57 +00:00
|
|
|
dsl_dir_rele(pdd, FTAG);
|
2010-05-28 20:45:14 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
error = dsl_dataset_hold(dp, doca->doca_origin, FTAG, &origin);
|
|
|
|
if (error != 0)
|
2010-08-26 21:24:34 +00:00
|
|
|
return (error);
|
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
/* You can only clone snapshots, not the head datasets. */
|
2015-04-02 03:44:32 +00:00
|
|
|
if (!origin->ds_is_snapshot) {
|
2013-09-04 12:00:57 +00:00
|
|
|
dsl_dataset_rele(origin, FTAG);
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINVAL));
|
2010-05-28 20:45:14 +00:00
|
|
|
}
|
2013-09-04 12:00:57 +00:00
|
|
|
dsl_dataset_rele(origin, FTAG);
|
2010-08-26 21:24:34 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
return (0);
|
2009-07-02 22:44:48 +00:00
|
|
|
}
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
static void
|
|
|
|
dmu_objset_clone_sync(void *arg, dmu_tx_t *tx)
|
2008-11-20 20:01:55 +00:00
|
|
|
{
|
2013-09-04 12:00:57 +00:00
|
|
|
dmu_objset_clone_arg_t *doca = arg;
|
|
|
|
dsl_pool_t *dp = dmu_tx_pool(tx);
|
|
|
|
dsl_dir_t *pdd;
|
|
|
|
const char *tail;
|
|
|
|
dsl_dataset_t *origin, *ds;
|
|
|
|
uint64_t obj;
|
|
|
|
char namebuf[MAXNAMELEN];
|
2013-08-28 11:45:09 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
VERIFY0(dsl_dir_hold(dp, doca->doca_clone, FTAG, &pdd, &tail));
|
|
|
|
VERIFY0(dsl_dataset_hold(dp, doca->doca_origin, FTAG, &origin));
|
2013-08-28 11:45:09 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
obj = dsl_dataset_create_sync(pdd, tail, origin, 0,
|
|
|
|
doca->doca_cred, tx);
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
VERIFY0(dsl_dataset_hold_obj(pdd->dd_pool, obj, FTAG, &ds));
|
|
|
|
dsl_dataset_name(origin, namebuf);
|
|
|
|
spa_history_log_internal_ds(ds, "clone", tx,
|
|
|
|
"origin=%s (%llu)", namebuf, origin->ds_object);
|
|
|
|
dsl_dataset_rele(ds, FTAG);
|
|
|
|
dsl_dataset_rele(origin, FTAG);
|
|
|
|
dsl_dir_rele(pdd, FTAG);
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
int
|
2013-09-04 12:00:57 +00:00
|
|
|
dmu_objset_clone(const char *clone, const char *origin)
|
2008-11-20 20:01:55 +00:00
|
|
|
{
|
2013-09-04 12:00:57 +00:00
|
|
|
dmu_objset_clone_arg_t doca;
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
doca.doca_clone = clone;
|
|
|
|
doca.doca_origin = origin;
|
|
|
|
doca.doca_cred = CRED();
|
2010-08-26 21:24:34 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
return (dsl_sync_task(clone,
|
2014-11-03 20:28:43 +00:00
|
|
|
dmu_objset_clone_check, dmu_objset_clone_sync, &doca,
|
|
|
|
5, ZFS_SPACE_CHECK_NORMAL));
|
2013-08-28 11:45:09 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
dmu_objset_snapshot_one(const char *fsname, const char *snapname)
|
|
|
|
{
|
|
|
|
int err;
|
|
|
|
char *longsnap = kmem_asprintf("%s@%s", fsname, snapname);
|
|
|
|
nvlist_t *snaps = fnvlist_alloc();
|
|
|
|
|
|
|
|
fnvlist_add_boolean(snaps, longsnap);
|
|
|
|
strfree(longsnap);
|
2013-09-04 12:00:57 +00:00
|
|
|
err = dsl_dataset_snapshot(snaps, NULL, NULL);
|
|
|
|
fnvlist_free(snaps);
|
2013-08-28 11:45:09 +00:00
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
|
2008-11-20 20:01:55 +00:00
|
|
|
static void
|
2009-07-02 22:44:48 +00:00
|
|
|
dmu_objset_sync_dnodes(list_t *list, list_t *newlist, dmu_tx_t *tx)
|
2008-11-20 20:01:55 +00:00
|
|
|
{
|
|
|
|
dnode_t *dn;
|
|
|
|
|
2010-08-26 16:52:42 +00:00
|
|
|
while ((dn = list_head(list))) {
|
2008-11-20 20:01:55 +00:00
|
|
|
ASSERT(dn->dn_object != DMU_META_DNODE_OBJECT);
|
|
|
|
ASSERT(dn->dn_dbuf->db_data_pending);
|
|
|
|
/*
|
2009-07-02 22:44:48 +00:00
|
|
|
* Initialize dn_zio outside dnode_sync() because the
|
|
|
|
* meta-dnode needs to set it ouside dnode_sync().
|
2008-11-20 20:01:55 +00:00
|
|
|
*/
|
|
|
|
dn->dn_zio = dn->dn_dbuf->db_data_pending->dr_zio;
|
|
|
|
ASSERT(dn->dn_zio);
|
|
|
|
|
|
|
|
ASSERT3U(dn->dn_nlevels, <=, DN_MAX_LEVELS);
|
|
|
|
list_remove(list, dn);
|
2009-07-02 22:44:48 +00:00
|
|
|
|
|
|
|
if (newlist) {
|
|
|
|
(void) dnode_add_ref(dn, newlist);
|
|
|
|
list_insert_tail(newlist, dn);
|
|
|
|
}
|
|
|
|
|
2008-11-20 20:01:55 +00:00
|
|
|
dnode_sync(dn, tx);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* ARGSUSED */
|
|
|
|
static void
|
2010-05-28 20:45:14 +00:00
|
|
|
dmu_objset_write_ready(zio_t *zio, arc_buf_t *abuf, void *arg)
|
2008-11-20 20:01:55 +00:00
|
|
|
{
|
2010-08-26 16:52:39 +00:00
|
|
|
int i;
|
|
|
|
|
2008-12-03 20:09:06 +00:00
|
|
|
blkptr_t *bp = zio->io_bp;
|
2010-05-28 20:45:14 +00:00
|
|
|
objset_t *os = arg;
|
2008-11-20 20:01:55 +00:00
|
|
|
dnode_phys_t *dnp = &os->os_phys->os_meta_dnode;
|
|
|
|
|
2014-06-05 21:19:08 +00:00
|
|
|
ASSERT(!BP_IS_EMBEDDED(bp));
|
2013-09-04 12:00:57 +00:00
|
|
|
ASSERT3P(bp, ==, os->os_rootbp);
|
|
|
|
ASSERT3U(BP_GET_TYPE(bp), ==, DMU_OT_OBJSET);
|
|
|
|
ASSERT0(BP_GET_LEVEL(bp));
|
2008-11-20 20:01:55 +00:00
|
|
|
|
|
|
|
/*
|
2009-07-02 22:44:48 +00:00
|
|
|
* Update rootbp fill count: it should be the number of objects
|
|
|
|
* allocated in the object set (not counting the "special"
|
|
|
|
* objects that are stored in the objset_phys_t -- the meta
|
|
|
|
* dnode and user/group accounting objects).
|
2008-11-20 20:01:55 +00:00
|
|
|
*/
|
2009-07-02 22:44:48 +00:00
|
|
|
bp->blk_fill = 0;
|
2010-08-26 16:52:39 +00:00
|
|
|
for (i = 0; i < dnp->dn_nblkptr; i++)
|
2014-06-05 21:19:08 +00:00
|
|
|
bp->blk_fill += BP_GET_FILL(&dnp->dn_blkptr[i]);
|
2010-05-28 20:45:14 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* ARGSUSED */
|
|
|
|
static void
|
|
|
|
dmu_objset_write_done(zio_t *zio, arc_buf_t *abuf, void *arg)
|
|
|
|
{
|
|
|
|
blkptr_t *bp = zio->io_bp;
|
|
|
|
blkptr_t *bp_orig = &zio->io_bp_orig;
|
|
|
|
objset_t *os = arg;
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2008-12-03 20:09:06 +00:00
|
|
|
if (zio->io_flags & ZIO_FLAG_IO_REWRITE) {
|
2010-05-28 20:45:14 +00:00
|
|
|
ASSERT(BP_EQUAL(bp, bp_orig));
|
2008-12-03 20:09:06 +00:00
|
|
|
} else {
|
2010-05-28 20:45:14 +00:00
|
|
|
dsl_dataset_t *ds = os->os_dsl_dataset;
|
|
|
|
dmu_tx_t *tx = os->os_synctx;
|
|
|
|
|
|
|
|
(void) dsl_dataset_block_kill(ds, bp_orig, tx, B_TRUE);
|
|
|
|
dsl_dataset_block_born(ds, bp, tx);
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* called from dsl */
|
|
|
|
void
|
2010-05-28 20:45:14 +00:00
|
|
|
dmu_objset_sync(objset_t *os, zio_t *pio, dmu_tx_t *tx)
|
2008-11-20 20:01:55 +00:00
|
|
|
{
|
|
|
|
int txgoff;
|
2014-06-25 18:37:59 +00:00
|
|
|
zbookmark_phys_t zb;
|
2010-05-28 20:45:14 +00:00
|
|
|
zio_prop_t zp;
|
2008-11-20 20:01:55 +00:00
|
|
|
zio_t *zio;
|
|
|
|
list_t *list;
|
2009-07-02 22:44:48 +00:00
|
|
|
list_t *newlist = NULL;
|
2008-11-20 20:01:55 +00:00
|
|
|
dbuf_dirty_record_t *dr;
|
|
|
|
|
|
|
|
dprintf_ds(os->os_dsl_dataset, "txg=%llu\n", tx->tx_txg);
|
|
|
|
|
|
|
|
ASSERT(dmu_tx_is_syncing(tx));
|
|
|
|
/* XXX the write_done callback should really give us the tx... */
|
|
|
|
os->os_synctx = tx;
|
|
|
|
|
|
|
|
if (os->os_dsl_dataset == NULL) {
|
|
|
|
/*
|
|
|
|
* This is the MOS. If we have upgraded,
|
|
|
|
* spa_max_replication() could change, so reset
|
|
|
|
* os_copies here.
|
|
|
|
*/
|
|
|
|
os->os_copies = spa_max_replication(os->os_spa);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Create the root block IO
|
|
|
|
*/
|
2010-05-28 20:45:14 +00:00
|
|
|
SET_BOOKMARK(&zb, os->os_dsl_dataset ?
|
|
|
|
os->os_dsl_dataset->ds_object : DMU_META_OBJSET,
|
|
|
|
ZB_ROOT_OBJECT, ZB_ROOT_LEVEL, ZB_ROOT_BLKID);
|
2013-07-02 20:26:24 +00:00
|
|
|
arc_release(os->os_phys_buf, &os->os_phys_buf);
|
2008-12-03 20:09:06 +00:00
|
|
|
|
2010-05-28 20:45:14 +00:00
|
|
|
dmu_write_policy(os, NULL, 0, 0, &zp);
|
2009-07-02 22:44:48 +00:00
|
|
|
|
2010-05-28 20:45:14 +00:00
|
|
|
zio = arc_write(pio, os->os_spa, tx->tx_txg,
|
2013-08-01 20:02:10 +00:00
|
|
|
os->os_rootbp, os->os_phys_buf, DMU_OS_IS_L2CACHEABLE(os),
|
|
|
|
DMU_OS_IS_L2COMPRESSIBLE(os), &zp, dmu_objset_write_ready,
|
Illumos #4045 write throttle & i/o scheduler performance work
4045 zfs write throttle & i/o scheduler performance work
1. The ZFS i/o scheduler (vdev_queue.c) now divides i/os into 5 classes: sync
read, sync write, async read, async write, and scrub/resilver. The scheduler
issues a number of concurrent i/os from each class to the device. Once a class
has been selected, an i/o is selected from this class using either an elevator
algorithem (async, scrub classes) or FIFO (sync classes). The number of
concurrent async write i/os is tuned dynamically based on i/o load, to achieve
good sync i/o latency when there is not a high load of writes, and good write
throughput when there is. See the block comment in vdev_queue.c (reproduced
below) for more details.
2. The write throttle (dsl_pool_tempreserve_space() and
txg_constrain_throughput()) is rewritten to produce much more consistent delays
when under constant load. The new write throttle is based on the amount of
dirty data, rather than guesses about future performance of the system. When
there is a lot of dirty data, each transaction (e.g. write() syscall) will be
delayed by the same small amount. This eliminates the "brick wall of wait"
that the old write throttle could hit, causing all transactions to wait several
seconds until the next txg opens. One of the keys to the new write throttle is
decrementing the amount of dirty data as i/o completes, rather than at the end
of spa_sync(). Note that the write throttle is only applied once the i/o
scheduler is issuing the maximum number of outstanding async writes. See the
block comments in dsl_pool.c and above dmu_tx_delay() (reproduced below) for
more details.
This diff has several other effects, including:
* the commonly-tuned global variable zfs_vdev_max_pending has been removed;
use per-class zfs_vdev_*_max_active values or zfs_vdev_max_active instead.
* the size of each txg (meaning the amount of dirty data written, and thus the
time it takes to write out) is now controlled differently. There is no longer
an explicit time goal; the primary determinant is amount of dirty data.
Systems that are under light or medium load will now often see that a txg is
always syncing, but the impact to performance (e.g. read latency) is minimal.
Tune zfs_dirty_data_max and zfs_dirty_data_sync to control this.
* zio_taskq_batch_pct = 75 -- Only use 75% of all CPUs for compression,
checksum, etc. This improves latency by not allowing these CPU-intensive tasks
to consume all CPU (on machines with at least 4 CPU's; the percentage is
rounded up).
--matt
APPENDIX: problems with the current i/o scheduler
The current ZFS i/o scheduler (vdev_queue.c) is deadline based. The problem
with this is that if there are always i/os pending, then certain classes of
i/os can see very long delays.
For example, if there are always synchronous reads outstanding, then no async
writes will be serviced until they become "past due". One symptom of this
situation is that each pass of the txg sync takes at least several seconds
(typically 3 seconds).
If many i/os become "past due" (their deadline is in the past), then we must
service all of these overdue i/os before any new i/os. This happens when we
enqueue a batch of async writes for the txg sync, with deadlines 2.5 seconds in
the future. If we can't complete all the i/os in 2.5 seconds (e.g. because
there were always reads pending), then these i/os will become past due. Now we
must service all the "async" writes (which could be hundreds of megabytes)
before we service any reads, introducing considerable latency to synchronous
i/os (reads or ZIL writes).
Notes on porting to ZFS on Linux:
- zio_t gained new members io_physdone and io_phys_children. Because
object caches in the Linux port call the constructor only once at
allocation time, objects may contain residual data when retrieved
from the cache. Therefore zio_create() was updated to zero out the two
new fields.
- vdev_mirror_pending() relied on the depth of the per-vdev pending queue
(vq->vq_pending_tree) to select the least-busy leaf vdev to read from.
This tree has been replaced by vq->vq_active_tree which is now used
for the same purpose.
- vdev_queue_init() used the value of zfs_vdev_max_pending to determine
the number of vdev I/O buffers to pre-allocate. That global no longer
exists, so we instead use the sum of the *_max_active values for each of
the five I/O classes described above.
- The Illumos implementation of dmu_tx_delay() delays a transaction by
sleeping in condition variable embedded in the thread
(curthread->t_delay_cv). We do not have an equivalent CV to use in
Linux, so this change replaced the delay logic with a wrapper called
zfs_sleep_until(). This wrapper could be adopted upstream and in other
downstream ports to abstract away operating system-specific delay logic.
- These tunables are added as module parameters, and descriptions added
to the zfs-module-parameters.5 man page.
spa_asize_inflation
zfs_deadman_synctime_ms
zfs_vdev_max_active
zfs_vdev_async_write_active_min_dirty_percent
zfs_vdev_async_write_active_max_dirty_percent
zfs_vdev_async_read_max_active
zfs_vdev_async_read_min_active
zfs_vdev_async_write_max_active
zfs_vdev_async_write_min_active
zfs_vdev_scrub_max_active
zfs_vdev_scrub_min_active
zfs_vdev_sync_read_max_active
zfs_vdev_sync_read_min_active
zfs_vdev_sync_write_max_active
zfs_vdev_sync_write_min_active
zfs_dirty_data_max_percent
zfs_delay_min_dirty_percent
zfs_dirty_data_max_max_percent
zfs_dirty_data_max
zfs_dirty_data_max_max
zfs_dirty_data_sync
zfs_delay_scale
The latter four have type unsigned long, whereas they are uint64_t in
Illumos. This accommodates Linux's module_param() supported types, but
means they may overflow on 32-bit architectures.
The values zfs_dirty_data_max and zfs_dirty_data_max_max are the most
likely to overflow on 32-bit systems, since they express physical RAM
sizes in bytes. In fact, Illumos initializes zfs_dirty_data_max_max to
2^32 which does overflow. To resolve that, this port instead initializes
it in arc_init() to 25% of physical RAM, and adds the tunable
zfs_dirty_data_max_max_percent to override that percentage. While this
solution doesn't completely avoid the overflow issue, it should be a
reasonable default for most systems, and the minority of affected
systems can work around the issue by overriding the defaults.
- Fixed reversed logic in comment above zfs_delay_scale declaration.
- Clarified comments in vdev_queue.c regarding when per-queue minimums take
effect.
- Replaced dmu_tx_write_limit in the dmu_tx kstat file
with dmu_tx_dirty_delay and dmu_tx_dirty_over_max. The first counts
how many times a transaction has been delayed because the pool dirty
data has exceeded zfs_delay_min_dirty_percent. The latter counts how
many times the pool dirty data has exceeded zfs_dirty_data_max (which
we expect to never happen).
- The original patch would have regressed the bug fixed in
zfsonlinux/zfs@c418410, which prevented users from setting the
zfs_vdev_aggregation_limit tuning larger than SPA_MAXBLOCKSIZE.
A similar fix is added to vdev_queue_aggregate().
- In vdev_queue_io_to_issue(), dynamically allocate 'zio_t search' on the
heap instead of the stack. In Linux we can't afford such large
structures on the stack.
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Adam Leventhal <ahl@delphix.com>
Reviewed by: Christopher Siden <christopher.siden@delphix.com>
Reviewed by: Ned Bass <bass6@llnl.gov>
Reviewed by: Brendan Gregg <brendan.gregg@joyent.com>
Approved by: Robert Mustacchi <rm@joyent.com>
References:
http://www.illumos.org/issues/4045
illumos/illumos-gate@69962b5647e4a8b9b14998733b765925381b727e
Ported-by: Ned Bass <bass6@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #1913
2013-08-29 03:01:20 +00:00
|
|
|
NULL, dmu_objset_write_done, os, ZIO_PRIORITY_ASYNC_WRITE,
|
2013-08-01 20:02:10 +00:00
|
|
|
ZIO_FLAG_MUSTSUCCEED, &zb);
|
2008-11-20 20:01:55 +00:00
|
|
|
|
|
|
|
/*
|
2009-07-02 22:44:48 +00:00
|
|
|
* Sync special dnodes - the parent IO for the sync is the root block
|
2008-11-20 20:01:55 +00:00
|
|
|
*/
|
2010-08-26 21:24:34 +00:00
|
|
|
DMU_META_DNODE(os)->dn_zio = zio;
|
|
|
|
dnode_sync(DMU_META_DNODE(os), tx);
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2009-07-02 22:44:48 +00:00
|
|
|
os->os_phys->os_flags = os->os_flags;
|
|
|
|
|
2010-08-26 21:24:34 +00:00
|
|
|
if (DMU_USERUSED_DNODE(os) &&
|
|
|
|
DMU_USERUSED_DNODE(os)->dn_type != DMU_OT_NONE) {
|
|
|
|
DMU_USERUSED_DNODE(os)->dn_zio = zio;
|
|
|
|
dnode_sync(DMU_USERUSED_DNODE(os), tx);
|
|
|
|
DMU_GROUPUSED_DNODE(os)->dn_zio = zio;
|
|
|
|
dnode_sync(DMU_GROUPUSED_DNODE(os), tx);
|
2009-07-02 22:44:48 +00:00
|
|
|
}
|
|
|
|
|
2008-11-20 20:01:55 +00:00
|
|
|
txgoff = tx->tx_txg & TXG_MASK;
|
|
|
|
|
2009-07-02 22:44:48 +00:00
|
|
|
if (dmu_objset_userused_enabled(os)) {
|
|
|
|
newlist = &os->os_synced_dnodes;
|
|
|
|
/*
|
|
|
|
* We must create the list here because it uses the
|
|
|
|
* dn_dirty_link[] of this txg.
|
|
|
|
*/
|
|
|
|
list_create(newlist, sizeof (dnode_t),
|
|
|
|
offsetof(dnode_t, dn_dirty_link[txgoff]));
|
|
|
|
}
|
|
|
|
|
|
|
|
dmu_objset_sync_dnodes(&os->os_free_dnodes[txgoff], newlist, tx);
|
|
|
|
dmu_objset_sync_dnodes(&os->os_dirty_dnodes[txgoff], newlist, tx);
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2010-08-26 21:24:34 +00:00
|
|
|
list = &DMU_META_DNODE(os)->dn_dirty_records[txgoff];
|
2013-08-28 11:45:09 +00:00
|
|
|
while ((dr = list_head(list))) {
|
2013-09-04 12:00:57 +00:00
|
|
|
ASSERT0(dr->dr_dbuf->db_level);
|
2008-11-20 20:01:55 +00:00
|
|
|
list_remove(list, dr);
|
|
|
|
if (dr->dr_zio)
|
|
|
|
zio_nowait(dr->dr_zio);
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* Free intent log blocks up to this tx.
|
|
|
|
*/
|
|
|
|
zil_sync(os->os_zil, tx);
|
2008-12-03 20:09:06 +00:00
|
|
|
os->os_phys->os_zil_header = os->os_zil_header;
|
2008-11-20 20:01:55 +00:00
|
|
|
zio_nowait(zio);
|
|
|
|
}
|
|
|
|
|
2010-05-28 20:45:14 +00:00
|
|
|
boolean_t
|
|
|
|
dmu_objset_is_dirty(objset_t *os, uint64_t txg)
|
|
|
|
{
|
|
|
|
return (!list_is_empty(&os->os_dirty_dnodes[txg & TXG_MASK]) ||
|
|
|
|
!list_is_empty(&os->os_free_dnodes[txg & TXG_MASK]));
|
|
|
|
}
|
|
|
|
|
2010-08-26 21:24:34 +00:00
|
|
|
static objset_used_cb_t *used_cbs[DMU_OST_NUMTYPES];
|
2009-07-02 22:44:48 +00:00
|
|
|
|
|
|
|
void
|
|
|
|
dmu_objset_register_type(dmu_objset_type_t ost, objset_used_cb_t *cb)
|
|
|
|
{
|
|
|
|
used_cbs[ost] = cb;
|
|
|
|
}
|
|
|
|
|
|
|
|
boolean_t
|
2010-05-28 20:45:14 +00:00
|
|
|
dmu_objset_userused_enabled(objset_t *os)
|
2009-07-02 22:44:48 +00:00
|
|
|
{
|
|
|
|
return (spa_version(os->os_spa) >= SPA_VERSION_USERSPACE &&
|
2010-08-26 21:24:34 +00:00
|
|
|
used_cbs[os->os_phys->os_type] != NULL &&
|
|
|
|
DMU_USERUSED_DNODE(os) != NULL);
|
2009-07-02 22:44:48 +00:00
|
|
|
}
|
|
|
|
|
2010-05-28 20:45:14 +00:00
|
|
|
static void
|
|
|
|
do_userquota_update(objset_t *os, uint64_t used, uint64_t flags,
|
|
|
|
uint64_t user, uint64_t group, boolean_t subtract, dmu_tx_t *tx)
|
|
|
|
{
|
|
|
|
if ((flags & DNODE_FLAG_USERUSED_ACCOUNTED)) {
|
|
|
|
int64_t delta = DNODE_SIZE + used;
|
|
|
|
if (subtract)
|
|
|
|
delta = -delta;
|
|
|
|
VERIFY3U(0, ==, zap_increment_int(os, DMU_USERUSED_OBJECT,
|
|
|
|
user, delta, tx));
|
|
|
|
VERIFY3U(0, ==, zap_increment_int(os, DMU_GROUPUSED_OBJECT,
|
|
|
|
group, delta, tx));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-07-02 22:44:48 +00:00
|
|
|
void
|
2010-05-28 20:45:14 +00:00
|
|
|
dmu_objset_do_userquota_updates(objset_t *os, dmu_tx_t *tx)
|
2009-07-02 22:44:48 +00:00
|
|
|
{
|
|
|
|
dnode_t *dn;
|
|
|
|
list_t *list = &os->os_synced_dnodes;
|
|
|
|
|
|
|
|
ASSERT(list_head(list) == NULL || dmu_objset_userused_enabled(os));
|
|
|
|
|
2013-08-28 11:45:09 +00:00
|
|
|
while ((dn = list_head(list))) {
|
2010-08-26 21:24:34 +00:00
|
|
|
int flags;
|
2009-07-02 22:44:48 +00:00
|
|
|
ASSERT(!DMU_OBJECT_IS_SPECIAL(dn->dn_object));
|
|
|
|
ASSERT(dn->dn_phys->dn_type == DMU_OT_NONE ||
|
|
|
|
dn->dn_phys->dn_flags &
|
|
|
|
DNODE_FLAG_USERUSED_ACCOUNTED);
|
|
|
|
|
|
|
|
/* Allocate the user/groupused objects if necessary. */
|
2010-08-26 21:24:34 +00:00
|
|
|
if (DMU_USERUSED_DNODE(os)->dn_type == DMU_OT_NONE) {
|
2010-05-28 20:45:14 +00:00
|
|
|
VERIFY(0 == zap_create_claim(os,
|
2009-07-02 22:44:48 +00:00
|
|
|
DMU_USERUSED_OBJECT,
|
|
|
|
DMU_OT_USERGROUP_USED, DMU_OT_NONE, 0, tx));
|
2010-05-28 20:45:14 +00:00
|
|
|
VERIFY(0 == zap_create_claim(os,
|
2009-07-02 22:44:48 +00:00
|
|
|
DMU_GROUPUSED_OBJECT,
|
|
|
|
DMU_OT_USERGROUP_USED, DMU_OT_NONE, 0, tx));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
2010-05-28 20:45:14 +00:00
|
|
|
* We intentionally modify the zap object even if the
|
|
|
|
* net delta is zero. Otherwise
|
|
|
|
* the block of the zap obj could be shared between
|
|
|
|
* datasets but need to be different between them after
|
|
|
|
* a bprewrite.
|
2009-07-02 22:44:48 +00:00
|
|
|
*/
|
|
|
|
|
2010-08-26 21:24:34 +00:00
|
|
|
flags = dn->dn_id_flags;
|
|
|
|
ASSERT(flags);
|
|
|
|
if (flags & DN_ID_OLD_EXIST) {
|
2010-05-28 20:45:14 +00:00
|
|
|
do_userquota_update(os, dn->dn_oldused, dn->dn_oldflags,
|
|
|
|
dn->dn_olduid, dn->dn_oldgid, B_TRUE, tx);
|
|
|
|
}
|
2010-08-26 21:24:34 +00:00
|
|
|
if (flags & DN_ID_NEW_EXIST) {
|
2010-05-28 20:45:14 +00:00
|
|
|
do_userquota_update(os, DN_USED_BYTES(dn->dn_phys),
|
|
|
|
dn->dn_phys->dn_flags, dn->dn_newuid,
|
|
|
|
dn->dn_newgid, B_FALSE, tx);
|
|
|
|
}
|
|
|
|
|
2010-08-26 21:24:34 +00:00
|
|
|
mutex_enter(&dn->dn_mtx);
|
2010-05-28 20:45:14 +00:00
|
|
|
dn->dn_oldused = 0;
|
|
|
|
dn->dn_oldflags = 0;
|
|
|
|
if (dn->dn_id_flags & DN_ID_NEW_EXIST) {
|
|
|
|
dn->dn_olduid = dn->dn_newuid;
|
|
|
|
dn->dn_oldgid = dn->dn_newgid;
|
|
|
|
dn->dn_id_flags |= DN_ID_OLD_EXIST;
|
|
|
|
if (dn->dn_bonuslen == 0)
|
|
|
|
dn->dn_id_flags |= DN_ID_CHKED_SPILL;
|
|
|
|
else
|
|
|
|
dn->dn_id_flags |= DN_ID_CHKED_BONUS;
|
|
|
|
}
|
|
|
|
dn->dn_id_flags &= ~(DN_ID_NEW_EXIST);
|
2009-07-02 22:44:48 +00:00
|
|
|
mutex_exit(&dn->dn_mtx);
|
|
|
|
|
|
|
|
list_remove(list, dn);
|
|
|
|
dnode_rele(dn, list);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-05-28 20:45:14 +00:00
|
|
|
/*
|
|
|
|
* Returns a pointer to data to find uid/gid from
|
|
|
|
*
|
|
|
|
* If a dirty record for transaction group that is syncing can't
|
|
|
|
* be found then NULL is returned. In the NULL case it is assumed
|
|
|
|
* the uid/gid aren't changing.
|
|
|
|
*/
|
|
|
|
static void *
|
|
|
|
dmu_objset_userquota_find_data(dmu_buf_impl_t *db, dmu_tx_t *tx)
|
|
|
|
{
|
|
|
|
dbuf_dirty_record_t *dr, **drp;
|
|
|
|
void *data;
|
|
|
|
|
|
|
|
if (db->db_dirtycnt == 0)
|
|
|
|
return (db->db.db_data); /* Nothing is changing */
|
|
|
|
|
|
|
|
for (drp = &db->db_last_dirty; (dr = *drp) != NULL; drp = &dr->dr_next)
|
|
|
|
if (dr->dr_txg == tx->tx_txg)
|
|
|
|
break;
|
|
|
|
|
2010-08-26 21:24:34 +00:00
|
|
|
if (dr == NULL) {
|
2010-05-28 20:45:14 +00:00
|
|
|
data = NULL;
|
2010-08-26 21:24:34 +00:00
|
|
|
} else {
|
|
|
|
dnode_t *dn;
|
|
|
|
|
|
|
|
DB_DNODE_ENTER(dr->dr_dbuf);
|
|
|
|
dn = DB_DNODE(dr->dr_dbuf);
|
|
|
|
|
|
|
|
if (dn->dn_bonuslen == 0 &&
|
|
|
|
dr->dr_dbuf->db_blkid == DMU_SPILL_BLKID)
|
|
|
|
data = dr->dt.dl.dr_data->b_data;
|
|
|
|
else
|
|
|
|
data = dr->dt.dl.dr_data;
|
|
|
|
|
|
|
|
DB_DNODE_EXIT(dr->dr_dbuf);
|
|
|
|
}
|
|
|
|
|
2010-05-28 20:45:14 +00:00
|
|
|
return (data);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
dmu_objset_userquota_get_ids(dnode_t *dn, boolean_t before, dmu_tx_t *tx)
|
|
|
|
{
|
|
|
|
objset_t *os = dn->dn_objset;
|
|
|
|
void *data = NULL;
|
|
|
|
dmu_buf_impl_t *db = NULL;
|
2013-02-11 06:21:05 +00:00
|
|
|
uint64_t *user = NULL;
|
|
|
|
uint64_t *group = NULL;
|
2010-05-28 20:45:14 +00:00
|
|
|
int flags = dn->dn_id_flags;
|
|
|
|
int error;
|
|
|
|
boolean_t have_spill = B_FALSE;
|
|
|
|
|
|
|
|
if (!dmu_objset_userused_enabled(dn->dn_objset))
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (before && (flags & (DN_ID_CHKED_BONUS|DN_ID_OLD_EXIST|
|
|
|
|
DN_ID_CHKED_SPILL)))
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (before && dn->dn_bonuslen != 0)
|
|
|
|
data = DN_BONUS(dn->dn_phys);
|
|
|
|
else if (!before && dn->dn_bonuslen != 0) {
|
2015-09-25 18:15:02 +00:00
|
|
|
if (dn->dn_bonus) {
|
|
|
|
db = dn->dn_bonus;
|
2010-05-28 20:45:14 +00:00
|
|
|
mutex_enter(&db->db_mtx);
|
|
|
|
data = dmu_objset_userquota_find_data(db, tx);
|
|
|
|
} else {
|
|
|
|
data = DN_BONUS(dn->dn_phys);
|
|
|
|
}
|
|
|
|
} else if (dn->dn_bonuslen == 0 && dn->dn_bonustype == DMU_OT_SA) {
|
|
|
|
int rf = 0;
|
|
|
|
|
|
|
|
if (RW_WRITE_HELD(&dn->dn_struct_rwlock))
|
|
|
|
rf |= DB_RF_HAVESTRUCT;
|
2010-08-26 21:24:34 +00:00
|
|
|
error = dmu_spill_hold_by_dnode(dn,
|
|
|
|
rf | DB_RF_MUST_SUCCEED,
|
2010-05-28 20:45:14 +00:00
|
|
|
FTAG, (dmu_buf_t **)&db);
|
|
|
|
ASSERT(error == 0);
|
|
|
|
mutex_enter(&db->db_mtx);
|
|
|
|
data = (before) ? db->db.db_data :
|
|
|
|
dmu_objset_userquota_find_data(db, tx);
|
|
|
|
have_spill = B_TRUE;
|
|
|
|
} else {
|
|
|
|
mutex_enter(&dn->dn_mtx);
|
|
|
|
dn->dn_id_flags |= DN_ID_CHKED_BONUS;
|
|
|
|
mutex_exit(&dn->dn_mtx);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (before) {
|
|
|
|
ASSERT(data);
|
|
|
|
user = &dn->dn_olduid;
|
|
|
|
group = &dn->dn_oldgid;
|
|
|
|
} else if (data) {
|
|
|
|
user = &dn->dn_newuid;
|
|
|
|
group = &dn->dn_newgid;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Must always call the callback in case the object
|
|
|
|
* type has changed and that type isn't an object type to track
|
|
|
|
*/
|
|
|
|
error = used_cbs[os->os_phys->os_type](dn->dn_bonustype, data,
|
|
|
|
user, group);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Preserve existing uid/gid when the callback can't determine
|
|
|
|
* what the new uid/gid are and the callback returned EEXIST.
|
|
|
|
* The EEXIST error tells us to just use the existing uid/gid.
|
|
|
|
* If we don't know what the old values are then just assign
|
|
|
|
* them to 0, since that is a new file being created.
|
|
|
|
*/
|
|
|
|
if (!before && data == NULL && error == EEXIST) {
|
|
|
|
if (flags & DN_ID_OLD_EXIST) {
|
|
|
|
dn->dn_newuid = dn->dn_olduid;
|
|
|
|
dn->dn_newgid = dn->dn_oldgid;
|
|
|
|
} else {
|
|
|
|
dn->dn_newuid = 0;
|
|
|
|
dn->dn_newgid = 0;
|
|
|
|
}
|
|
|
|
error = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (db)
|
|
|
|
mutex_exit(&db->db_mtx);
|
|
|
|
|
|
|
|
mutex_enter(&dn->dn_mtx);
|
|
|
|
if (error == 0 && before)
|
|
|
|
dn->dn_id_flags |= DN_ID_OLD_EXIST;
|
|
|
|
if (error == 0 && !before)
|
|
|
|
dn->dn_id_flags |= DN_ID_NEW_EXIST;
|
|
|
|
|
|
|
|
if (have_spill) {
|
|
|
|
dn->dn_id_flags |= DN_ID_CHKED_SPILL;
|
|
|
|
} else {
|
|
|
|
dn->dn_id_flags |= DN_ID_CHKED_BONUS;
|
|
|
|
}
|
|
|
|
mutex_exit(&dn->dn_mtx);
|
2015-09-25 18:15:02 +00:00
|
|
|
if (have_spill)
|
2010-05-28 20:45:14 +00:00
|
|
|
dmu_buf_rele((dmu_buf_t *)db, FTAG);
|
|
|
|
}
|
|
|
|
|
2009-07-02 22:44:48 +00:00
|
|
|
boolean_t
|
|
|
|
dmu_objset_userspace_present(objset_t *os)
|
|
|
|
{
|
2010-05-28 20:45:14 +00:00
|
|
|
return (os->os_phys->os_flags &
|
2009-07-02 22:44:48 +00:00
|
|
|
OBJSET_FLAG_USERACCOUNTING_COMPLETE);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
dmu_objset_userspace_upgrade(objset_t *os)
|
|
|
|
{
|
|
|
|
uint64_t obj;
|
|
|
|
int err = 0;
|
|
|
|
|
|
|
|
if (dmu_objset_userspace_present(os))
|
|
|
|
return (0);
|
2010-05-28 20:45:14 +00:00
|
|
|
if (!dmu_objset_userused_enabled(os))
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(ENOTSUP));
|
2009-07-02 22:44:48 +00:00
|
|
|
if (dmu_objset_is_snapshot(os))
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINVAL));
|
2009-07-02 22:44:48 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* We simply need to mark every object dirty, so that it will be
|
|
|
|
* synced out and now accounted. If this is called
|
|
|
|
* concurrently, or if we already did some work before crashing,
|
|
|
|
* that's fine, since we track each object's accounted state
|
|
|
|
* independently.
|
|
|
|
*/
|
|
|
|
|
|
|
|
for (obj = 0; err == 0; err = dmu_object_next(os, &obj, FALSE, 0)) {
|
2009-08-18 18:43:27 +00:00
|
|
|
dmu_tx_t *tx;
|
2009-07-02 22:44:48 +00:00
|
|
|
dmu_buf_t *db;
|
|
|
|
int objerr;
|
|
|
|
|
|
|
|
if (issig(JUSTLOOKING) && issig(FORREAL))
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINTR));
|
2009-07-02 22:44:48 +00:00
|
|
|
|
|
|
|
objerr = dmu_bonus_hold(os, obj, FTAG, &db);
|
2013-09-04 12:00:57 +00:00
|
|
|
if (objerr != 0)
|
2009-07-02 22:44:48 +00:00
|
|
|
continue;
|
2009-08-18 18:43:27 +00:00
|
|
|
tx = dmu_tx_create(os);
|
2009-07-02 22:44:48 +00:00
|
|
|
dmu_tx_hold_bonus(tx, obj);
|
|
|
|
objerr = dmu_tx_assign(tx, TXG_WAIT);
|
2013-09-04 12:00:57 +00:00
|
|
|
if (objerr != 0) {
|
2009-07-02 22:44:48 +00:00
|
|
|
dmu_tx_abort(tx);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
dmu_buf_will_dirty(db, tx);
|
|
|
|
dmu_buf_rele(db, FTAG);
|
|
|
|
dmu_tx_commit(tx);
|
|
|
|
}
|
|
|
|
|
2010-05-28 20:45:14 +00:00
|
|
|
os->os_flags |= OBJSET_FLAG_USERACCOUNTING_COMPLETE;
|
2009-07-02 22:44:48 +00:00
|
|
|
txg_wait_synced(dmu_objset_pool(os), 0);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
2008-11-20 20:01:55 +00:00
|
|
|
void
|
|
|
|
dmu_objset_space(objset_t *os, uint64_t *refdbytesp, uint64_t *availbytesp,
|
|
|
|
uint64_t *usedobjsp, uint64_t *availobjsp)
|
|
|
|
{
|
2010-05-28 20:45:14 +00:00
|
|
|
dsl_dataset_space(os->os_dsl_dataset, refdbytesp, availbytesp,
|
2008-11-20 20:01:55 +00:00
|
|
|
usedobjsp, availobjsp);
|
|
|
|
}
|
|
|
|
|
|
|
|
uint64_t
|
|
|
|
dmu_objset_fsid_guid(objset_t *os)
|
|
|
|
{
|
2010-05-28 20:45:14 +00:00
|
|
|
return (dsl_dataset_fsid_guid(os->os_dsl_dataset));
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
dmu_objset_fast_stat(objset_t *os, dmu_objset_stats_t *stat)
|
|
|
|
{
|
2010-05-28 20:45:14 +00:00
|
|
|
stat->dds_type = os->os_phys->os_type;
|
|
|
|
if (os->os_dsl_dataset)
|
|
|
|
dsl_dataset_fast_stat(os->os_dsl_dataset, stat);
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
dmu_objset_stats(objset_t *os, nvlist_t *nv)
|
|
|
|
{
|
2010-05-28 20:45:14 +00:00
|
|
|
ASSERT(os->os_dsl_dataset ||
|
|
|
|
os->os_phys->os_type == DMU_OST_META);
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2010-05-28 20:45:14 +00:00
|
|
|
if (os->os_dsl_dataset != NULL)
|
|
|
|
dsl_dataset_stats(os->os_dsl_dataset, nv);
|
2008-11-20 20:01:55 +00:00
|
|
|
|
|
|
|
dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_TYPE,
|
2010-05-28 20:45:14 +00:00
|
|
|
os->os_phys->os_type);
|
2009-07-02 22:44:48 +00:00
|
|
|
dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_USERACCOUNTING,
|
|
|
|
dmu_objset_userspace_present(os));
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
dmu_objset_is_snapshot(objset_t *os)
|
|
|
|
{
|
2010-05-28 20:45:14 +00:00
|
|
|
if (os->os_dsl_dataset != NULL)
|
2015-04-02 03:44:32 +00:00
|
|
|
return (os->os_dsl_dataset->ds_is_snapshot);
|
2008-11-20 20:01:55 +00:00
|
|
|
else
|
|
|
|
return (B_FALSE);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
dmu_snapshot_realname(objset_t *os, char *name, char *real, int maxlen,
|
|
|
|
boolean_t *conflict)
|
|
|
|
{
|
2010-05-28 20:45:14 +00:00
|
|
|
dsl_dataset_t *ds = os->os_dsl_dataset;
|
2008-11-20 20:01:55 +00:00
|
|
|
uint64_t ignored;
|
|
|
|
|
2015-04-01 15:14:34 +00:00
|
|
|
if (dsl_dataset_phys(ds)->ds_snapnames_zapobj == 0)
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(ENOENT));
|
2008-11-20 20:01:55 +00:00
|
|
|
|
|
|
|
return (zap_lookup_norm(ds->ds_dir->dd_pool->dp_meta_objset,
|
2015-04-01 15:14:34 +00:00
|
|
|
dsl_dataset_phys(ds)->ds_snapnames_zapobj, name, 8, 1, &ignored,
|
|
|
|
MT_FIRST, real, maxlen, conflict));
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
dmu_snapshot_list_next(objset_t *os, int namelen, char *name,
|
|
|
|
uint64_t *idp, uint64_t *offp, boolean_t *case_conflict)
|
|
|
|
{
|
2010-05-28 20:45:14 +00:00
|
|
|
dsl_dataset_t *ds = os->os_dsl_dataset;
|
2008-11-20 20:01:55 +00:00
|
|
|
zap_cursor_t cursor;
|
|
|
|
zap_attribute_t attr;
|
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
ASSERT(dsl_pool_config_held(dmu_objset_pool(os)));
|
|
|
|
|
2015-04-01 15:14:34 +00:00
|
|
|
if (dsl_dataset_phys(ds)->ds_snapnames_zapobj == 0)
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(ENOENT));
|
2008-11-20 20:01:55 +00:00
|
|
|
|
|
|
|
zap_cursor_init_serialized(&cursor,
|
|
|
|
ds->ds_dir->dd_pool->dp_meta_objset,
|
2015-04-01 15:14:34 +00:00
|
|
|
dsl_dataset_phys(ds)->ds_snapnames_zapobj, *offp);
|
2008-11-20 20:01:55 +00:00
|
|
|
|
|
|
|
if (zap_cursor_retrieve(&cursor, &attr) != 0) {
|
|
|
|
zap_cursor_fini(&cursor);
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(ENOENT));
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if (strlen(attr.za_name) + 1 > namelen) {
|
|
|
|
zap_cursor_fini(&cursor);
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(ENAMETOOLONG));
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
(void) strcpy(name, attr.za_name);
|
|
|
|
if (idp)
|
|
|
|
*idp = attr.za_first_integer;
|
|
|
|
if (case_conflict)
|
|
|
|
*case_conflict = attr.za_normalization_conflict;
|
|
|
|
zap_cursor_advance(&cursor);
|
|
|
|
*offp = zap_cursor_serialize(&cursor);
|
|
|
|
zap_cursor_fini(&cursor);
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
2011-11-11 07:15:53 +00:00
|
|
|
int
|
2013-01-25 22:57:53 +00:00
|
|
|
dmu_snapshot_lookup(objset_t *os, const char *name, uint64_t *value)
|
2011-11-11 07:15:53 +00:00
|
|
|
{
|
2013-11-01 19:26:11 +00:00
|
|
|
return (dsl_dataset_snap_lookup(os->os_dsl_dataset, name, value));
|
2011-11-11 07:15:53 +00:00
|
|
|
}
|
|
|
|
|
2008-11-20 20:01:55 +00:00
|
|
|
int
|
|
|
|
dmu_dir_list_next(objset_t *os, int namelen, char *name,
|
|
|
|
uint64_t *idp, uint64_t *offp)
|
|
|
|
{
|
2010-05-28 20:45:14 +00:00
|
|
|
dsl_dir_t *dd = os->os_dsl_dataset->ds_dir;
|
2008-11-20 20:01:55 +00:00
|
|
|
zap_cursor_t cursor;
|
|
|
|
zap_attribute_t attr;
|
|
|
|
|
|
|
|
/* there is no next dir on a snapshot! */
|
2010-05-28 20:45:14 +00:00
|
|
|
if (os->os_dsl_dataset->ds_object !=
|
2015-04-01 15:14:34 +00:00
|
|
|
dsl_dir_phys(dd)->dd_head_dataset_obj)
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(ENOENT));
|
2008-11-20 20:01:55 +00:00
|
|
|
|
|
|
|
zap_cursor_init_serialized(&cursor,
|
|
|
|
dd->dd_pool->dp_meta_objset,
|
2015-04-01 15:14:34 +00:00
|
|
|
dsl_dir_phys(dd)->dd_child_dir_zapobj, *offp);
|
2008-11-20 20:01:55 +00:00
|
|
|
|
|
|
|
if (zap_cursor_retrieve(&cursor, &attr) != 0) {
|
|
|
|
zap_cursor_fini(&cursor);
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(ENOENT));
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if (strlen(attr.za_name) + 1 > namelen) {
|
|
|
|
zap_cursor_fini(&cursor);
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(ENAMETOOLONG));
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
(void) strcpy(name, attr.za_name);
|
|
|
|
if (idp)
|
|
|
|
*idp = attr.za_first_integer;
|
|
|
|
zap_cursor_advance(&cursor);
|
|
|
|
*offp = zap_cursor_serialize(&cursor);
|
|
|
|
zap_cursor_fini(&cursor);
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
2015-05-06 16:07:55 +00:00
|
|
|
typedef struct dmu_objset_find_ctx {
|
|
|
|
taskq_t *dc_tq;
|
|
|
|
dsl_pool_t *dc_dp;
|
|
|
|
uint64_t dc_ddobj;
|
|
|
|
int (*dc_func)(dsl_pool_t *, dsl_dataset_t *, void *);
|
|
|
|
void *dc_arg;
|
|
|
|
int dc_flags;
|
|
|
|
kmutex_t *dc_error_lock;
|
|
|
|
int *dc_error;
|
|
|
|
} dmu_objset_find_ctx_t;
|
|
|
|
|
|
|
|
static void
|
|
|
|
dmu_objset_find_dp_impl(dmu_objset_find_ctx_t *dcp)
|
2008-12-03 20:09:06 +00:00
|
|
|
{
|
2015-05-06 16:07:55 +00:00
|
|
|
dsl_pool_t *dp = dcp->dc_dp;
|
|
|
|
dmu_objset_find_ctx_t *child_dcp;
|
2013-09-04 12:00:57 +00:00
|
|
|
dsl_dir_t *dd;
|
|
|
|
dsl_dataset_t *ds;
|
|
|
|
zap_cursor_t zc;
|
|
|
|
zap_attribute_t *attr;
|
|
|
|
uint64_t thisobj;
|
2015-05-06 16:07:55 +00:00
|
|
|
int err = 0;
|
2013-09-04 12:00:57 +00:00
|
|
|
|
2015-05-06 16:07:55 +00:00
|
|
|
/* don't process if there already was an error */
|
|
|
|
if (*dcp->dc_error != 0)
|
|
|
|
goto out;
|
2013-09-04 12:00:57 +00:00
|
|
|
|
2015-05-06 16:07:55 +00:00
|
|
|
err = dsl_dir_hold_obj(dp, dcp->dc_ddobj, NULL, FTAG, &dd);
|
2013-09-04 12:00:57 +00:00
|
|
|
if (err != 0)
|
2015-05-06 16:07:55 +00:00
|
|
|
goto out;
|
2013-09-04 12:00:57 +00:00
|
|
|
|
|
|
|
/* Don't visit hidden ($MOS & $ORIGIN) objsets. */
|
|
|
|
if (dd->dd_myname[0] == '$') {
|
|
|
|
dsl_dir_rele(dd, FTAG);
|
2015-05-06 16:07:55 +00:00
|
|
|
goto out;
|
2013-09-04 12:00:57 +00:00
|
|
|
}
|
|
|
|
|
2015-04-01 15:14:34 +00:00
|
|
|
thisobj = dsl_dir_phys(dd)->dd_head_dataset_obj;
|
2014-11-21 00:09:39 +00:00
|
|
|
attr = kmem_alloc(sizeof (zap_attribute_t), KM_SLEEP);
|
2013-09-04 12:00:57 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Iterate over all children.
|
|
|
|
*/
|
2015-05-06 16:07:55 +00:00
|
|
|
if (dcp->dc_flags & DS_FIND_CHILDREN) {
|
2013-09-04 12:00:57 +00:00
|
|
|
for (zap_cursor_init(&zc, dp->dp_meta_objset,
|
2015-04-01 15:14:34 +00:00
|
|
|
dsl_dir_phys(dd)->dd_child_dir_zapobj);
|
2013-09-04 12:00:57 +00:00
|
|
|
zap_cursor_retrieve(&zc, attr) == 0;
|
|
|
|
(void) zap_cursor_advance(&zc)) {
|
|
|
|
ASSERT3U(attr->za_integer_length, ==,
|
|
|
|
sizeof (uint64_t));
|
|
|
|
ASSERT3U(attr->za_num_integers, ==, 1);
|
|
|
|
|
2015-05-06 16:07:55 +00:00
|
|
|
child_dcp = kmem_alloc(sizeof (*child_dcp), KM_SLEEP);
|
|
|
|
*child_dcp = *dcp;
|
|
|
|
child_dcp->dc_ddobj = attr->za_first_integer;
|
|
|
|
if (dcp->dc_tq != NULL)
|
|
|
|
(void) taskq_dispatch(dcp->dc_tq,
|
|
|
|
dmu_objset_find_dp_cb, child_dcp, TQ_SLEEP);
|
|
|
|
else
|
|
|
|
dmu_objset_find_dp_impl(child_dcp);
|
2013-09-04 12:00:57 +00:00
|
|
|
}
|
|
|
|
zap_cursor_fini(&zc);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Iterate over all snapshots.
|
|
|
|
*/
|
2015-05-06 16:07:55 +00:00
|
|
|
if (dcp->dc_flags & DS_FIND_SNAPSHOTS) {
|
2013-09-04 12:00:57 +00:00
|
|
|
dsl_dataset_t *ds;
|
|
|
|
err = dsl_dataset_hold_obj(dp, thisobj, FTAG, &ds);
|
|
|
|
|
|
|
|
if (err == 0) {
|
2015-04-01 15:14:34 +00:00
|
|
|
uint64_t snapobj;
|
|
|
|
|
|
|
|
snapobj = dsl_dataset_phys(ds)->ds_snapnames_zapobj;
|
2013-09-04 12:00:57 +00:00
|
|
|
dsl_dataset_rele(ds, FTAG);
|
|
|
|
|
|
|
|
for (zap_cursor_init(&zc, dp->dp_meta_objset, snapobj);
|
|
|
|
zap_cursor_retrieve(&zc, attr) == 0;
|
|
|
|
(void) zap_cursor_advance(&zc)) {
|
|
|
|
ASSERT3U(attr->za_integer_length, ==,
|
|
|
|
sizeof (uint64_t));
|
|
|
|
ASSERT3U(attr->za_num_integers, ==, 1);
|
|
|
|
|
|
|
|
err = dsl_dataset_hold_obj(dp,
|
|
|
|
attr->za_first_integer, FTAG, &ds);
|
|
|
|
if (err != 0)
|
|
|
|
break;
|
2015-05-06 16:07:55 +00:00
|
|
|
err = dcp->dc_func(dp, ds, dcp->dc_arg);
|
2013-09-04 12:00:57 +00:00
|
|
|
dsl_dataset_rele(ds, FTAG);
|
|
|
|
if (err != 0)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
zap_cursor_fini(&zc);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
dsl_dir_rele(dd, FTAG);
|
|
|
|
kmem_free(attr, sizeof (zap_attribute_t));
|
|
|
|
|
|
|
|
if (err != 0)
|
2015-05-06 16:07:55 +00:00
|
|
|
goto out;
|
2013-09-04 12:00:57 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Apply to self.
|
|
|
|
*/
|
|
|
|
err = dsl_dataset_hold_obj(dp, thisobj, FTAG, &ds);
|
|
|
|
if (err != 0)
|
2015-05-06 16:07:55 +00:00
|
|
|
goto out;
|
|
|
|
err = dcp->dc_func(dp, ds, dcp->dc_arg);
|
2013-09-04 12:00:57 +00:00
|
|
|
dsl_dataset_rele(ds, FTAG);
|
2015-05-06 16:07:55 +00:00
|
|
|
|
|
|
|
out:
|
|
|
|
if (err != 0) {
|
|
|
|
mutex_enter(dcp->dc_error_lock);
|
|
|
|
/* only keep first error */
|
|
|
|
if (*dcp->dc_error == 0)
|
|
|
|
*dcp->dc_error = err;
|
|
|
|
mutex_exit(dcp->dc_error_lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
kmem_free(dcp, sizeof (*dcp));
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
dmu_objset_find_dp_cb(void *arg)
|
|
|
|
{
|
|
|
|
dmu_objset_find_ctx_t *dcp = arg;
|
|
|
|
dsl_pool_t *dp = dcp->dc_dp;
|
|
|
|
|
2015-07-02 15:58:17 +00:00
|
|
|
/*
|
|
|
|
* We need to get a pool_config_lock here, as there are several
|
|
|
|
* asssert(pool_config_held) down the stack. Getting a lock via
|
|
|
|
* dsl_pool_config_enter is risky, as it might be stalled by a
|
|
|
|
* pending writer. This would deadlock, as the write lock can
|
|
|
|
* only be granted when our parent thread gives up the lock.
|
|
|
|
* The _prio interface gives us priority over a pending writer.
|
|
|
|
*/
|
|
|
|
dsl_pool_config_enter_prio(dp, FTAG);
|
2015-05-06 16:07:55 +00:00
|
|
|
|
|
|
|
dmu_objset_find_dp_impl(dcp);
|
|
|
|
|
|
|
|
dsl_pool_config_exit(dp, FTAG);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Find objsets under and including ddobj, call func(ds) on each.
|
|
|
|
* The order for the enumeration is completely undefined.
|
|
|
|
* func is called with dsl_pool_config held.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
dmu_objset_find_dp(dsl_pool_t *dp, uint64_t ddobj,
|
|
|
|
int func(dsl_pool_t *, dsl_dataset_t *, void *), void *arg, int flags)
|
|
|
|
{
|
|
|
|
int error = 0;
|
|
|
|
taskq_t *tq = NULL;
|
|
|
|
int ntasks;
|
|
|
|
dmu_objset_find_ctx_t *dcp;
|
|
|
|
kmutex_t err_lock;
|
|
|
|
|
|
|
|
mutex_init(&err_lock, NULL, MUTEX_DEFAULT, NULL);
|
|
|
|
dcp = kmem_alloc(sizeof (*dcp), KM_SLEEP);
|
|
|
|
dcp->dc_tq = NULL;
|
|
|
|
dcp->dc_dp = dp;
|
|
|
|
dcp->dc_ddobj = ddobj;
|
|
|
|
dcp->dc_func = func;
|
|
|
|
dcp->dc_arg = arg;
|
|
|
|
dcp->dc_flags = flags;
|
|
|
|
dcp->dc_error_lock = &err_lock;
|
|
|
|
dcp->dc_error = &error;
|
|
|
|
|
|
|
|
if ((flags & DS_FIND_SERIALIZE) || dsl_pool_config_held_writer(dp)) {
|
|
|
|
/*
|
|
|
|
* In case a write lock is held we can't make use of
|
|
|
|
* parallelism, as down the stack of the worker threads
|
|
|
|
* the lock is asserted via dsl_pool_config_held.
|
|
|
|
* In case of a read lock this is solved by getting a read
|
|
|
|
* lock in each worker thread, which isn't possible in case
|
|
|
|
* of a writer lock. So we fall back to the synchronous path
|
|
|
|
* here.
|
|
|
|
* In the future it might be possible to get some magic into
|
|
|
|
* dsl_pool_config_held in a way that it returns true for
|
|
|
|
* the worker threads so that a single lock held from this
|
|
|
|
* thread suffices. For now, stay single threaded.
|
|
|
|
*/
|
|
|
|
dmu_objset_find_dp_impl(dcp);
|
|
|
|
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
ntasks = dmu_find_threads;
|
|
|
|
if (ntasks == 0)
|
|
|
|
ntasks = vdev_count_leaves(dp->dp_spa) * 4;
|
2015-07-24 17:08:31 +00:00
|
|
|
tq = taskq_create("dmu_objset_find", ntasks, maxclsyspri, ntasks,
|
2015-05-06 16:07:55 +00:00
|
|
|
INT_MAX, 0);
|
|
|
|
if (tq == NULL) {
|
|
|
|
kmem_free(dcp, sizeof (*dcp));
|
|
|
|
return (SET_ERROR(ENOMEM));
|
|
|
|
}
|
|
|
|
dcp->dc_tq = tq;
|
|
|
|
|
|
|
|
/* dcp will be freed by task */
|
|
|
|
(void) taskq_dispatch(tq, dmu_objset_find_dp_cb, dcp, TQ_SLEEP);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* PORTING: this code relies on the property of taskq_wait to wait
|
|
|
|
* until no more tasks are queued and no more tasks are active. As
|
|
|
|
* we always queue new tasks from within other tasks, task_wait
|
|
|
|
* reliably waits for the full recursion to finish, even though we
|
|
|
|
* enqueue new tasks after taskq_wait has been called.
|
|
|
|
* On platforms other than illumos, taskq_wait may not have this
|
|
|
|
* property.
|
|
|
|
*/
|
|
|
|
taskq_wait(tq);
|
|
|
|
taskq_destroy(tq);
|
|
|
|
mutex_destroy(&err_lock);
|
|
|
|
|
|
|
|
return (error);
|
2008-12-03 20:09:06 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
2013-09-04 12:00:57 +00:00
|
|
|
* Find all objsets under name, and for each, call 'func(child_name, arg)'.
|
|
|
|
* The dp_config_rwlock must not be held when this is called, and it
|
|
|
|
* will not be held when the callback is called.
|
|
|
|
* Therefore this function should only be used when the pool is not changing
|
|
|
|
* (e.g. in syncing context), or the callback can deal with the possible races.
|
2008-12-03 20:09:06 +00:00
|
|
|
*/
|
2013-09-04 12:00:57 +00:00
|
|
|
static int
|
|
|
|
dmu_objset_find_impl(spa_t *spa, const char *name,
|
|
|
|
int func(const char *, void *), void *arg, int flags)
|
2008-11-20 20:01:55 +00:00
|
|
|
{
|
|
|
|
dsl_dir_t *dd;
|
2013-09-04 12:00:57 +00:00
|
|
|
dsl_pool_t *dp = spa_get_dsl(spa);
|
2008-12-03 20:09:06 +00:00
|
|
|
dsl_dataset_t *ds;
|
2008-11-20 20:01:55 +00:00
|
|
|
zap_cursor_t zc;
|
|
|
|
zap_attribute_t *attr;
|
|
|
|
char *child;
|
2008-12-03 20:09:06 +00:00
|
|
|
uint64_t thisobj;
|
|
|
|
int err;
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
dsl_pool_config_enter(dp, FTAG);
|
|
|
|
|
|
|
|
err = dsl_dir_hold(dp, name, FTAG, &dd, NULL);
|
|
|
|
if (err != 0) {
|
|
|
|
dsl_pool_config_exit(dp, FTAG);
|
2008-11-20 20:01:55 +00:00
|
|
|
return (err);
|
2013-09-04 12:00:57 +00:00
|
|
|
}
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2008-12-03 20:09:06 +00:00
|
|
|
/* Don't visit hidden ($MOS & $ORIGIN) objsets. */
|
|
|
|
if (dd->dd_myname[0] == '$') {
|
2013-09-04 12:00:57 +00:00
|
|
|
dsl_dir_rele(dd, FTAG);
|
|
|
|
dsl_pool_config_exit(dp, FTAG);
|
2008-12-03 20:09:06 +00:00
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
2015-04-01 15:14:34 +00:00
|
|
|
thisobj = dsl_dir_phys(dd)->dd_head_dataset_obj;
|
2014-11-21 00:09:39 +00:00
|
|
|
attr = kmem_alloc(sizeof (zap_attribute_t), KM_SLEEP);
|
2008-11-20 20:01:55 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Iterate over all children.
|
|
|
|
*/
|
|
|
|
if (flags & DS_FIND_CHILDREN) {
|
2008-12-03 20:09:06 +00:00
|
|
|
for (zap_cursor_init(&zc, dp->dp_meta_objset,
|
2015-04-01 15:14:34 +00:00
|
|
|
dsl_dir_phys(dd)->dd_child_dir_zapobj);
|
2008-11-20 20:01:55 +00:00
|
|
|
zap_cursor_retrieve(&zc, attr) == 0;
|
|
|
|
(void) zap_cursor_advance(&zc)) {
|
2013-09-04 12:00:57 +00:00
|
|
|
ASSERT3U(attr->za_integer_length, ==,
|
|
|
|
sizeof (uint64_t));
|
|
|
|
ASSERT3U(attr->za_num_integers, ==, 1);
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2010-05-28 20:45:14 +00:00
|
|
|
child = kmem_asprintf("%s/%s", name, attr->za_name);
|
2013-09-04 12:00:57 +00:00
|
|
|
dsl_pool_config_exit(dp, FTAG);
|
|
|
|
err = dmu_objset_find_impl(spa, child,
|
|
|
|
func, arg, flags);
|
|
|
|
dsl_pool_config_enter(dp, FTAG);
|
2010-05-28 20:45:14 +00:00
|
|
|
strfree(child);
|
2013-09-04 12:00:57 +00:00
|
|
|
if (err != 0)
|
2008-11-20 20:01:55 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
zap_cursor_fini(&zc);
|
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
if (err != 0) {
|
|
|
|
dsl_dir_rele(dd, FTAG);
|
|
|
|
dsl_pool_config_exit(dp, FTAG);
|
2008-11-20 20:01:55 +00:00
|
|
|
kmem_free(attr, sizeof (zap_attribute_t));
|
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Iterate over all snapshots.
|
|
|
|
*/
|
2008-12-03 20:09:06 +00:00
|
|
|
if (flags & DS_FIND_SNAPSHOTS) {
|
|
|
|
err = dsl_dataset_hold_obj(dp, thisobj, FTAG, &ds);
|
|
|
|
|
|
|
|
if (err == 0) {
|
2015-04-01 15:14:34 +00:00
|
|
|
uint64_t snapobj;
|
|
|
|
|
|
|
|
snapobj = dsl_dataset_phys(ds)->ds_snapnames_zapobj;
|
2008-12-03 20:09:06 +00:00
|
|
|
dsl_dataset_rele(ds, FTAG);
|
|
|
|
|
|
|
|
for (zap_cursor_init(&zc, dp->dp_meta_objset, snapobj);
|
|
|
|
zap_cursor_retrieve(&zc, attr) == 0;
|
|
|
|
(void) zap_cursor_advance(&zc)) {
|
2013-09-04 12:00:57 +00:00
|
|
|
ASSERT3U(attr->za_integer_length, ==,
|
2008-12-03 20:09:06 +00:00
|
|
|
sizeof (uint64_t));
|
2013-09-04 12:00:57 +00:00
|
|
|
ASSERT3U(attr->za_num_integers, ==, 1);
|
2008-12-03 20:09:06 +00:00
|
|
|
|
2010-05-28 20:45:14 +00:00
|
|
|
child = kmem_asprintf("%s@%s",
|
|
|
|
name, attr->za_name);
|
2013-09-04 12:00:57 +00:00
|
|
|
dsl_pool_config_exit(dp, FTAG);
|
|
|
|
err = func(child, arg);
|
|
|
|
dsl_pool_config_enter(dp, FTAG);
|
2010-05-28 20:45:14 +00:00
|
|
|
strfree(child);
|
2013-09-04 12:00:57 +00:00
|
|
|
if (err != 0)
|
2008-12-03 20:09:06 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
zap_cursor_fini(&zc);
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
dsl_dir_rele(dd, FTAG);
|
2008-11-20 20:01:55 +00:00
|
|
|
kmem_free(attr, sizeof (zap_attribute_t));
|
2013-09-04 12:00:57 +00:00
|
|
|
dsl_pool_config_exit(dp, FTAG);
|
2008-11-20 20:01:55 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
if (err != 0)
|
2008-11-20 20:01:55 +00:00
|
|
|
return (err);
|
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
/* Apply to self. */
|
|
|
|
return (func(name, arg));
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
/*
|
|
|
|
* See comment above dmu_objset_find_impl().
|
|
|
|
*/
|
2009-02-18 20:51:31 +00:00
|
|
|
int
|
2013-09-04 12:00:57 +00:00
|
|
|
dmu_objset_find(char *name, int func(const char *, void *), void *arg,
|
|
|
|
int flags)
|
2009-02-18 20:51:31 +00:00
|
|
|
{
|
2013-09-04 12:00:57 +00:00
|
|
|
spa_t *spa;
|
|
|
|
int error;
|
2009-02-18 20:51:31 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
error = spa_open(name, &spa, FTAG);
|
|
|
|
if (error != 0)
|
|
|
|
return (error);
|
|
|
|
error = dmu_objset_find_impl(spa, name, func, arg, flags);
|
|
|
|
spa_close(spa, FTAG);
|
|
|
|
return (error);
|
2009-02-18 20:51:31 +00:00
|
|
|
}
|
|
|
|
|
2008-11-20 20:01:55 +00:00
|
|
|
void
|
|
|
|
dmu_objset_set_user(objset_t *os, void *user_ptr)
|
|
|
|
{
|
2010-05-28 20:45:14 +00:00
|
|
|
ASSERT(MUTEX_HELD(&os->os_user_ptr_lock));
|
|
|
|
os->os_user_ptr = user_ptr;
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
void *
|
|
|
|
dmu_objset_get_user(objset_t *os)
|
|
|
|
{
|
2010-05-28 20:45:14 +00:00
|
|
|
ASSERT(MUTEX_HELD(&os->os_user_ptr_lock));
|
|
|
|
return (os->os_user_ptr);
|
2008-11-20 20:01:55 +00:00
|
|
|
}
|
2010-08-26 18:49:16 +00:00
|
|
|
|
2013-09-04 12:00:57 +00:00
|
|
|
/*
|
|
|
|
* Determine name of filesystem, given name of snapshot.
|
|
|
|
* buf must be at least MAXNAMELEN bytes
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
dmu_fsname(const char *snapname, char *buf)
|
|
|
|
{
|
|
|
|
char *atp = strchr(snapname, '@');
|
|
|
|
if (atp == NULL)
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(EINVAL));
|
2013-09-04 12:00:57 +00:00
|
|
|
if (atp - snapname >= MAXNAMELEN)
|
2013-03-08 18:41:28 +00:00
|
|
|
return (SET_ERROR(ENAMETOOLONG));
|
2013-09-04 12:00:57 +00:00
|
|
|
(void) strlcpy(buf, snapname, atp - snapname + 1);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
2010-08-26 18:49:16 +00:00
|
|
|
#if defined(_KERNEL) && defined(HAVE_SPL)
|
2012-04-04 20:46:55 +00:00
|
|
|
EXPORT_SYMBOL(dmu_objset_zil);
|
2010-08-26 18:49:16 +00:00
|
|
|
EXPORT_SYMBOL(dmu_objset_pool);
|
2012-04-04 20:46:55 +00:00
|
|
|
EXPORT_SYMBOL(dmu_objset_ds);
|
|
|
|
EXPORT_SYMBOL(dmu_objset_type);
|
2010-08-26 18:49:16 +00:00
|
|
|
EXPORT_SYMBOL(dmu_objset_name);
|
|
|
|
EXPORT_SYMBOL(dmu_objset_hold);
|
|
|
|
EXPORT_SYMBOL(dmu_objset_own);
|
|
|
|
EXPORT_SYMBOL(dmu_objset_rele);
|
|
|
|
EXPORT_SYMBOL(dmu_objset_disown);
|
|
|
|
EXPORT_SYMBOL(dmu_objset_from_ds);
|
|
|
|
EXPORT_SYMBOL(dmu_objset_create);
|
|
|
|
EXPORT_SYMBOL(dmu_objset_clone);
|
|
|
|
EXPORT_SYMBOL(dmu_objset_stats);
|
|
|
|
EXPORT_SYMBOL(dmu_objset_fast_stat);
|
2011-01-21 22:35:41 +00:00
|
|
|
EXPORT_SYMBOL(dmu_objset_spa);
|
2010-08-26 18:49:16 +00:00
|
|
|
EXPORT_SYMBOL(dmu_objset_space);
|
|
|
|
EXPORT_SYMBOL(dmu_objset_fsid_guid);
|
|
|
|
EXPORT_SYMBOL(dmu_objset_find);
|
|
|
|
EXPORT_SYMBOL(dmu_objset_byteswap);
|
|
|
|
EXPORT_SYMBOL(dmu_objset_evict_dbufs);
|
|
|
|
EXPORT_SYMBOL(dmu_objset_snap_cmtime);
|
|
|
|
|
|
|
|
EXPORT_SYMBOL(dmu_objset_sync);
|
|
|
|
EXPORT_SYMBOL(dmu_objset_is_dirty);
|
|
|
|
EXPORT_SYMBOL(dmu_objset_create_impl);
|
|
|
|
EXPORT_SYMBOL(dmu_objset_open_impl);
|
|
|
|
EXPORT_SYMBOL(dmu_objset_evict);
|
|
|
|
EXPORT_SYMBOL(dmu_objset_register_type);
|
|
|
|
EXPORT_SYMBOL(dmu_objset_do_userquota_updates);
|
|
|
|
EXPORT_SYMBOL(dmu_objset_userquota_get_ids);
|
|
|
|
EXPORT_SYMBOL(dmu_objset_userused_enabled);
|
|
|
|
EXPORT_SYMBOL(dmu_objset_userspace_upgrade);
|
|
|
|
EXPORT_SYMBOL(dmu_objset_userspace_present);
|
|
|
|
#endif
|