Print this page
3740 Poor ZFS send / receive performance due to snapshot hold / release processing
Submitted by: Steven Hartland <steven.hartland@multiplay.co.uk>


   6  * Common Development and Distribution License (the "License").
   7  * You may not use this file except in compliance with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Copyright (c) 2012 by Delphix. All rights reserved.
  25  * Copyright (c) 2012, Joyent, Inc. All rights reserved.

  26  */
  27 
  28 #ifndef _SYS_DSL_USERHOLD_H
  29 #define _SYS_DSL_USERHOLD_H
  30 
  31 #include <sys/nvpair.h>
  32 #include <sys/types.h>
  33 
  34 #ifdef  __cplusplus
  35 extern "C" {
  36 #endif
  37 
  38 struct dsl_pool;
  39 struct dsl_dataset;
  40 struct dmu_tx;
  41 
  42 int dsl_dataset_user_hold(nvlist_t *holds, minor_t cleanup_minor,
  43     nvlist_t *errlist);
  44 int dsl_dataset_user_release(nvlist_t *holds, nvlist_t *errlist);
  45 int dsl_dataset_get_holds(const char *dsname, nvlist_t *nvl);
  46 void dsl_dataset_user_release_tmp(struct dsl_pool *dp, uint64_t dsobj,
  47     const char *htag);
  48 int dsl_dataset_user_hold_check_one(struct dsl_dataset *ds, const char *htag,
  49     boolean_t temphold, struct dmu_tx *tx);
  50 void dsl_dataset_user_hold_sync_one(struct dsl_dataset *ds, const char *htag,
  51     minor_t minor, uint64_t now, struct dmu_tx *tx);
  52 
  53 #ifdef  __cplusplus
  54 }
  55 #endif
  56 
  57 #endif /* _SYS_DSL_USERHOLD_H */


   6  * Common Development and Distribution License (the "License").
   7  * You may not use this file except in compliance with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Copyright (c) 2012 by Delphix. All rights reserved.
  25  * Copyright (c) 2012, Joyent, Inc. All rights reserved.
  26  * Copyright (c) 2013 Steven Hartland. All rights reserved.
  27  */
  28 
  29 #ifndef _SYS_DSL_USERHOLD_H
  30 #define _SYS_DSL_USERHOLD_H
  31 
  32 #include <sys/nvpair.h>
  33 #include <sys/types.h>
  34 
  35 #ifdef  __cplusplus
  36 extern "C" {
  37 #endif
  38 
  39 struct dsl_pool;
  40 struct dsl_dataset;
  41 struct dmu_tx;
  42 
  43 int dsl_dataset_user_hold(nvlist_t *holds, minor_t cleanup_minor,
  44     nvlist_t *errlist);
  45 int dsl_dataset_user_release(nvlist_t *holds, nvlist_t *errlist);
  46 int dsl_dataset_get_holds(const char *dsname, nvlist_t *nvl);
  47 void dsl_dataset_user_release_tmp(struct dsl_pool *dp, nvlist_t *holds);

  48 int dsl_dataset_user_hold_check_one(struct dsl_dataset *ds, const char *htag,
  49     boolean_t temphold, struct dmu_tx *tx);
  50 void dsl_dataset_user_hold_sync_one(struct dsl_dataset *ds, const char *htag,
  51     minor_t minor, uint64_t now, struct dmu_tx *tx);
  52 
  53 #ifdef  __cplusplus
  54 }
  55 #endif
  56 
  57 #endif /* _SYS_DSL_USERHOLD_H */