illumos/illumos-gate: usr/src/lib/libbe/common/be

annotate usr/src/lib/libbe/common/be_snapshot.c @ 13025:3c7681e3e323

PSARC 2010/059 SNAP BE Management 6964804 SNAP BE management into ON 6971379 libbe should capture and give useful error when installgrub or ict.py fails. 6971390 beadm does not support labeled brand zones 6971394 BEADM_ERR_BE_DOES_NOT_EXIST has an extra space 6971397 libbe error messages need internationalization 6971402 Remove be_get_last_zone_be_callback 6971409 be_create_menu returns errors from both be_errno_t and errno sets

author	Glenn Lagasse <glenn.lagasse@oracle.com>
date	Wed, 04 Aug 2010 12:28:19 -0700
parents
children	70ccb19abd77

rev	line source
13025 3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2 * CDDL HEADER START
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	3 *
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	4 * The contents of this file are subject to the terms of the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	5 * Common Development and Distribution License (the "License").
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	6 * You may not use this file except in compliance with the License.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	7 *
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	9 * or http://www.opensolaris.org/os/licensing.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	10 * See the License for the specific language governing permissions
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	11 * and limitations under the License.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	12 *
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	13 * When distributing Covered Code, include this CDDL HEADER in each
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	15 * If applicable, add the following below this CDDL HEADER, with the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	16 * fields enclosed by brackets "[]" replaced with your own identifying
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	17 * information: Portions Copyright [yyyy] [name of copyright owner]
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	18 *
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	19 * CDDL HEADER END
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	20 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	21
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	22 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	23 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	24 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	25
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	26 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	27 * System includes
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	28 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	29 #include <assert.h>
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	30 #include <libintl.h>
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	31 #include <libnvpair.h>
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	32 #include <libzfs.h>
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	33 #include <stdio.h>
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	34 #include <stdlib.h>
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	35 #include <string.h>
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	36 #include <sys/types.h>
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	37 #include <sys/stat.h>
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	38 #include <unistd.h>
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	39
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	40 #include <libbe.h>
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	41 #include <libbe_priv.h>
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	42
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	43 /* Private function prototypes */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	44 static int be_rollback_check_callback(zfs_handle_t , void );
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	45 static int be_rollback_callback(zfs_handle_t , void );
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	46
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	47
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	48 /* ******************************************************************** */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	49 /* Public Functions */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	50 /* ******************************************************************** */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	51
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	52 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	53 * Function: be_create_snapshot
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	54 * Description: Creates a recursive snapshot of all the datasets within a BE.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	55 * If the name of the BE to snapshot is not provided, it assumes
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	56 * we're snapshotting the currently running BE. If the snapshot
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	57 * name is not provided it creates an auto named snapshot, which
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	58 * will be returned to the caller upon success.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	59 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	60 * be_attrs - pointer to nvlist_t of attributes being passed in.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	61 * The following attributes are used by this function:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	62 *
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	63 * BE_ATTR_ORIG_BE_NAME *optional
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	64 * BE_ATTR_SNAP_NAME *optional
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	65 * BE_ATTR_POLICY *optional
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	66 *
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	67 * If the BE_ATTR_SNAP_NAME was not passed in, upon
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	68 * successful BE snapshot creation, the following
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	69 * attribute value will be returned to the caller by
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	70 * setting it in the be_attrs parameter passed in:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	71 *
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	72 * BE_ATTR_SNAP_NAME
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	73 *
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	74 * Return:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	75 * BE_SUCCESS - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	76 * be_errno_t - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	77 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	78 * Public
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	79 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	80 int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	81 be_create_snapshot(nvlist_t *be_attrs)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	82 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	83 char *be_name = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	84 char *snap_name = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	85 char *policy = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	86 boolean_t autoname = B_FALSE;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	87 int ret = BE_SUCCESS;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	88
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	89 /* Initialize libzfs handle */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	90 if (!be_zfs_init())
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	91 return (BE_ERR_INIT);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	92
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	93 /* Get original BE name if one was provided */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	94 if (nvlist_lookup_pairs(be_attrs, NV_FLAG_NOENTOK,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	95 BE_ATTR_ORIG_BE_NAME, DATA_TYPE_STRING, &be_name, NULL) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	96 be_print_err(gettext("be_create_snapshot: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	97 "lookup BE_ATTR_ORIG_BE_NAME attribute\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	98 be_zfs_fini();
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	99 return (BE_ERR_INVAL);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	100 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	101
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	102 /* Validate original BE name if one was provided */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	103 if (be_name != NULL && !be_valid_be_name(be_name)) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	104 be_print_err(gettext("be_create_snapshot: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	105 "invalid BE name %s\n"), be_name);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	106 be_zfs_fini();
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	107 return (BE_ERR_INVAL);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	108 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	109
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	110 /* Get snapshot name to create if one was provided */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	111 if (nvlist_lookup_pairs(be_attrs, NV_FLAG_NOENTOK,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	112 BE_ATTR_SNAP_NAME, DATA_TYPE_STRING, &snap_name, NULL) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	113 be_print_err(gettext("be_create_snapshot: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	114 "failed to lookup BE_ATTR_SNAP_NAME attribute\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	115 be_zfs_fini();
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	116 return (BE_ERR_INVAL);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	117 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	118
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	119 /* Get BE policy to create this snapshot under */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	120 if (nvlist_lookup_pairs(be_attrs, NV_FLAG_NOENTOK,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	121 BE_ATTR_POLICY, DATA_TYPE_STRING, &policy, NULL) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	122 be_print_err(gettext("be_create_snapshot: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	123 "failed to lookup BE_ATTR_POLICY attribute\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	124 be_zfs_fini();
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	125 return (BE_ERR_INVAL);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	126 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	127
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	128 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	129 * If no snap_name ws provided, we're going to create an
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	130 * auto named snapshot. Set flag so that we know to pass
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	131 * the auto named snapshot to the caller later.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	132 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	133 if (snap_name == NULL)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	134 autoname = B_TRUE;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	135
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	136 if ((ret = _be_create_snapshot(be_name, &snap_name, policy))
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	137 == BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	138 if (autoname == B_TRUE) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	139 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	140 * Set auto named snapshot name in the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	141 * nvlist passed in by the caller.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	142 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	143 if (nvlist_add_string(be_attrs, BE_ATTR_SNAP_NAME,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	144 snap_name) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	145 be_print_err(gettext("be_create_snapshot: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	146 "failed to add auto snap name (%s) to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	147 "be_attrs\n"), snap_name);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	148 ret = BE_ERR_NOMEM;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	149 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	150 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	151 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	152
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	153 be_zfs_fini();
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	154
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	155 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	156 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	157
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	158 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	159 * Function: be_destroy_snapshot
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	160 * Description: Iterates through all the datasets of the BE and deletes
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	161 * the snapshots of each one with the specified name. If the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	162 * BE name is not provided, it assumes we're operating on the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	163 * currently running BE. The name of the snapshot name to
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	164 * destroy must be provided.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	165 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	166 * be_attrs - pointer to nvlist_t of attributes being passed in.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	167 * The following attribute values are used by this
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	168 * function:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	169 *
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	170 * BE_ATTR_ORIG_BE_NAME *optional
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	171 * BE_ATTR_SNAP_NAME *required
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	172 * Return:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	173 * BE_SUCCESS - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	174 * be_errno_t - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	175 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	176 * Public
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	177 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	178 int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	179 be_destroy_snapshot(nvlist_t *be_attrs)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	180 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	181 char *be_name = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	182 char *snap_name = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	183 int ret = BE_SUCCESS;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	184
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	185 /* Initialize libzfs handle */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	186 if (!be_zfs_init())
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	187 return (BE_ERR_INIT);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	188
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	189 /* Get original BE name if one was provided */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	190 if (nvlist_lookup_pairs(be_attrs, NV_FLAG_NOENTOK,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	191 BE_ATTR_ORIG_BE_NAME, DATA_TYPE_STRING, &be_name, NULL) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	192 be_print_err(gettext("be_destroy_snapshot: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	193 "failed to lookup BE_ATTR_ORIG_BE_NAME attribute\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	194 return (BE_ERR_INVAL);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	195 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	196
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	197 /* Validate original BE name if one was provided */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	198 if (be_name != NULL && !be_valid_be_name(be_name)) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	199 be_print_err(gettext("be_destroy_snapshot: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	200 "invalid BE name %s\n"), be_name);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	201 return (BE_ERR_INVAL);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	202 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	203
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	204 /* Get snapshot name to destroy */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	205 if (nvlist_lookup_string(be_attrs, BE_ATTR_SNAP_NAME, &snap_name)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	206 != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	207 be_print_err(gettext("be_destroy_snapshot: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	208 "failed to lookup BE_ATTR_SNAP_NAME attribute.\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	209 return (BE_ERR_INVAL);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	210 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	211
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	212 ret = _be_destroy_snapshot(be_name, snap_name);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	213
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	214 be_zfs_fini();
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	215
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	216 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	217 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	218
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	219 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	220 * Function: be_rollback
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	221 * Description: Rolls back a BE and all of its children datasets to the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	222 * named snapshot. All of the BE's datasets must have the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	223 * named snapshot for this function to succeed. If the name
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	224 * of the BE is not passed in, this function assumes we're
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	225 * operating on the currently booted live BE.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	226 *
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	227 * Note - This function does not check if the BE has any
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	228 * younger snapshots than the one we're trying to rollback to.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	229 * If it does, then those younger snapshots and their dependent
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	230 * clone file systems will get destroyed in the process of
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	231 * rolling back.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	232 *
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	233 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	234 * be_attrs - pointer to nvlist_t of attributes being passed in.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	235 * The following attributes are used by this function:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	236 *
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	237 * BE_ATTR_ORIG_BE_NAME *optional
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	238 * BE_ATTR_SNAP_NAME *required
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	239 *
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	240 * Returns:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	241 * BE_SUCCESS - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	242 * be_errno_t - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	243 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	244 * Public
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	245 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	246 int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	247 be_rollback(nvlist_t *be_attrs)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	248 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	249 be_transaction_data_t bt = { 0 };
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	250 zfs_handle_t *zhp = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	251 char obe_root_ds[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	252 int zret = 0, ret = BE_SUCCESS;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	253
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	254 /* Initialize libzfs handle */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	255 if (!be_zfs_init())
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	256 return (BE_ERR_INIT);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	257
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	258 /* Get original BE name if one was provided */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	259 if (nvlist_lookup_pairs(be_attrs, NV_FLAG_NOENTOK,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	260 BE_ATTR_ORIG_BE_NAME, DATA_TYPE_STRING, &bt.obe_name, NULL) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	261 be_print_err(gettext("be_rollback: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	262 "failed to lookup BE_ATTR_ORIG_BE_NAME attribute\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	263 return (BE_ERR_INVAL);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	264 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	265
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	266 /* If original BE name not provided, use current BE */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	267 if (bt.obe_name == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	268 if ((ret = be_find_current_be(&bt)) != BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	269 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	270 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	271 } else {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	272 /* Validate original BE name */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	273 if (!be_valid_be_name(bt.obe_name)) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	274 be_print_err(gettext("be_rollback: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	275 "invalid BE name %s\n"), bt.obe_name);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	276 return (BE_ERR_INVAL);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	277 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	278 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	279
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	280 /* Get snapshot name to rollback to */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	281 if (nvlist_lookup_string(be_attrs, BE_ATTR_SNAP_NAME, &bt.obe_snap_name)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	282 != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	283 be_print_err(gettext("be_rollback: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	284 "failed to lookup BE_ATTR_SNAP_NAME attribute.\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	285 return (BE_ERR_INVAL);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	286 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	287
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	288 /* Find which zpool obe_name lives in */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	289 if ((zret = zpool_iter(g_zfs, be_find_zpool_callback, &bt)) == 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	290 be_print_err(gettext("be_rollback: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	291 "failed to find zpool for BE (%s)\n"), bt.obe_name);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	292 return (BE_ERR_BE_NOENT);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	293 } else if (zret < 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	294 be_print_err(gettext("be_rollback: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	295 "zpool_iter failed: %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	296 libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	297 return (zfs_err_to_be_err(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	298 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	299
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	300 /* Generate string for BE's root dataset */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	301 be_make_root_ds(bt.obe_zpool, bt.obe_name, obe_root_ds,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	302 sizeof (obe_root_ds));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	303 bt.obe_root_ds = obe_root_ds;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	304
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	305 /* Get handle to BE's root dataset */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	306 if ((zhp = zfs_open(g_zfs, bt.obe_root_ds, ZFS_TYPE_DATASET)) == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	307 be_print_err(gettext("be_rollback: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	308 "failed to open BE root dataset (%s): %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	309 bt.obe_root_ds, libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	310 return (zfs_err_to_be_err(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	311 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	312
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	313 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	314 * Check that snapshot name exists for this BE and all of its
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	315 * children file systems. This call will end up closing the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	316 * zfs handle passed in whether it succeeds or fails.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	317 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	318 if ((ret = be_rollback_check_callback(zhp, bt.obe_snap_name)) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	319 zhp = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	320 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	321 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	322
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	323 /* Get handle to BE's root dataset */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	324 if ((zhp = zfs_open(g_zfs, bt.obe_root_ds, ZFS_TYPE_DATASET)) == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	325 be_print_err(gettext("be_rollback: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	326 "failed to open BE root dataset (%s): %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	327 bt.obe_root_ds, libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	328 return (zfs_err_to_be_err(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	329 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	330
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	331 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	332 * Iterate through a BE's datasets and roll them all back to
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	333 * the specified snapshot. This call will end up closing the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	334 * zfs handle passed in whether it succeeds or fails.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	335 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	336 if ((ret = be_rollback_callback(zhp, bt.obe_snap_name)) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	337 zhp = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	338 be_print_err(gettext("be_rollback: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	339 "failed to rollback BE %s to %s\n"), bt.obe_name,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	340 bt.obe_snap_name);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	341 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	342 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	343 zhp = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	344 be_zfs_fini();
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	345 return (BE_SUCCESS);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	346 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	347
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	348
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	349 /* ******************************************************************** */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	350 /* Semi-Private Functions */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	351 /* ******************************************************************** */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	352
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	353 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	354 * Function: _be_create_snapshot
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	355 * Description: see be_create_snapshot
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	356 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	357 * be_name - The name of the BE that we're taking a snapshot of.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	358 * snap_name - The name of the snapshot we're creating. If
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	359 * snap_name is NULL an auto generated name will be used,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	360 * and upon success, will return that name via this
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	361 * reference pointer. The caller is responsible for
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	362 * freeing the returned name.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	363 * policy - The clean-up policy type. (library wide use only)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	364 * Return:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	365 * BE_SUCCESS - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	366 * be_errno_t - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	367 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	368 * Semi-private (library wide use only)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	369 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	370 int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	371 _be_create_snapshot(char be_name, char snap_name, char policy)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	372 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	373 be_transaction_data_t bt = { 0 };
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	374 zfs_handle_t *zhp = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	375 nvlist_t *ss_props = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	376 char ss[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	377 char root_ds[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	378 int pool_version = 0;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	379 int i = 0;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	380 int zret = 0, ret = BE_SUCCESS;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	381 boolean_t autoname = B_FALSE;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	382
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	383 /* Set parameters in bt structure */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	384 bt.obe_name = be_name;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	385 bt.obe_snap_name = *snap_name;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	386 bt.policy = policy;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	387
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	388 /* If original BE name not supplied, use current BE */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	389 if (bt.obe_name == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	390 if ((ret = be_find_current_be(&bt)) != BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	391 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	392 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	393 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	394
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	395 /* Find which zpool obe_name lives in */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	396 if ((zret = zpool_iter(g_zfs, be_find_zpool_callback, &bt)) == 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	397 be_print_err(gettext("be_create_snapshot: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	398 "find zpool for BE (%s)\n"), bt.obe_name);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	399 return (BE_ERR_BE_NOENT);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	400 } else if (zret < 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	401 be_print_err(gettext("be_create_snapshot: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	402 "zpool_iter failed: %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	403 libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	404 return (zfs_err_to_be_err(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	405 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	406
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	407 be_make_root_ds(bt.obe_zpool, bt.obe_name, root_ds,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	408 sizeof (root_ds));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	409 bt.obe_root_ds = root_ds;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	410
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	411 /* If BE policy not specified, use the default policy */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	412 if (bt.policy == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	413 bt.policy = be_default_policy();
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	414 } else {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	415 /* Validate policy type */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	416 if (!valid_be_policy(bt.policy)) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	417 be_print_err(gettext("be_create_snapshot: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	418 "invalid BE policy type (%s)\n"), bt.policy);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	419 return (BE_ERR_INVAL);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	420 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	421 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	422
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	423 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	424 * If snapshot name not specified, set auto name flag and
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	425 * generate auto snapshot name.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	426 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	427 if (bt.obe_snap_name == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	428 autoname = B_TRUE;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	429 if ((bt.obe_snap_name = be_auto_snap_name())
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	430 == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	431 be_print_err(gettext("be_create_snapshot: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	432 "failed to create auto snapshot name\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	433 ret = BE_ERR_AUTONAME;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	434 goto done;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	435 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	436 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	437
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	438 /* Generate the name of the snapshot to take. */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	439 (void) snprintf(ss, sizeof (ss), "%s@%s", bt.obe_root_ds,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	440 bt.obe_snap_name);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	441
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	442 /* Get handle to BE's root dataset */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	443 if ((zhp = zfs_open(g_zfs, bt.obe_root_ds, ZFS_TYPE_DATASET))
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	444 == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	445 be_print_err(gettext("be_create_snapshot: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	446 "failed to open BE root dataset (%s): %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	447 bt.obe_root_ds, libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	448 ret = zfs_err_to_be_err(g_zfs);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	449 goto done;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	450 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	451
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	452 /* Get the ZFS pool version of the pool where this dataset resides */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	453 if (zfs_spa_version(zhp, &pool_version) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	454 be_print_err(gettext("be_create_snapshot: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	455 "get ZFS pool version for %s: %s\n"), zfs_get_name(zhp),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	456 libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	457 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	458
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	459 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	460 * If ZFS pool version supports snapshot user properties, store
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	461 * cleanup policy there. Otherwise don't set one - this snapshot
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	462 * will always inherit the cleanup policy from its parent.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	463 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	464 if (pool_version >= SPA_VERSION_SNAP_PROPS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	465 if (nvlist_alloc(&ss_props, NV_UNIQUE_NAME, 0) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	466 be_print_err(gettext("be_create_snapshot: internal "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	467 "error: out of memory\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	468 return (BE_ERR_NOMEM);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	469 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	470 if (nvlist_add_string(ss_props, BE_POLICY_PROPERTY, bt.policy)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	471 != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	472 be_print_err(gettext("be_create_snapshot: internal "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	473 "error: out of memory\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	474 nvlist_free(ss_props);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	475 return (BE_ERR_NOMEM);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	476 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	477 } else if (policy != NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	478 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	479 * If an explicit cleanup policy was requested
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	480 * by the caller and we don't support it, error out.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	481 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	482 be_print_err(gettext("be_create_snapshot: cannot set "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	483 "cleanup policy: ZFS pool version is %d\n"), pool_version);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	484 return (BE_ERR_NOTSUP);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	485 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	486
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	487 /* Create the snapshots recursively */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	488 if (zfs_snapshot(g_zfs, ss, B_TRUE, ss_props) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	489 if (!autoname \|\| libzfs_errno(g_zfs) != EZFS_EXISTS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	490 be_print_err(gettext("be_create_snapshot: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	491 "recursive snapshot of %s failed: %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	492 ss, libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	493
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	494 if (libzfs_errno(g_zfs) == EZFS_EXISTS)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	495 ret = BE_ERR_SS_EXISTS;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	496 else
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	497 ret = zfs_err_to_be_err(g_zfs);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	498
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	499 goto done;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	500 } else {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	501 for (i = 1; i < BE_AUTO_NAME_MAX_TRY; i++) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	502
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	503 /* Sleep 1 before retrying */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	504 (void) sleep(1);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	505
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	506 /* Generate new auto snapshot name. */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	507 free(bt.obe_snap_name);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	508 if ((bt.obe_snap_name =
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	509 be_auto_snap_name()) == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	510 be_print_err(gettext(
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	511 "be_create_snapshot: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	512 "create auto snapshot name\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	513 ret = BE_ERR_AUTONAME;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	514 goto done;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	515 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	516
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	517 /* Generate string of the snapshot to take. */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	518 (void) snprintf(ss, sizeof (ss), "%s@%s",
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	519 bt.obe_root_ds, bt.obe_snap_name);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	520
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	521 /* Create the snapshots recursively */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	522 if (zfs_snapshot(g_zfs, ss, B_TRUE, ss_props)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	523 != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	524 if (libzfs_errno(g_zfs) !=
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	525 EZFS_EXISTS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	526 be_print_err(gettext(
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	527 "be_create_snapshot: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	528 "recursive snapshot of %s "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	529 "failed: %s\n"), ss,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	530 libzfs_error_description(
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	531 g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	532 ret = zfs_err_to_be_err(g_zfs);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	533 goto done;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	534 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	535 } else {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	536 break;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	537 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	538 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	539
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	540 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	541 * If we exhausted the maximum number of tries,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	542 * free the auto snap name and set error.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	543 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	544 if (i == BE_AUTO_NAME_MAX_TRY) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	545 be_print_err(gettext("be_create_snapshot: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	546 "failed to create unique auto snapshot "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	547 "name\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	548 free(bt.obe_snap_name);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	549 bt.obe_snap_name = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	550 ret = BE_ERR_AUTONAME;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	551 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	552 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	553 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	554
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	555 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	556 * If we succeeded in creating an auto named snapshot, store
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	557 * the name in the nvlist passed in by the caller.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	558 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	559 if (autoname && bt.obe_snap_name) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	560 *snap_name = bt.obe_snap_name;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	561 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	562
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	563 done:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	564 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	565
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	566 if (ss_props != NULL)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	567 nvlist_free(ss_props);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	568
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	569 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	570 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	571
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	572 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	573 * Function: _be_destroy_snapshot
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	574 * Description: see be_destroy_snapshot
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	575 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	576 * be_name - The name of the BE that the snapshot belongs to.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	577 * snap_name - The name of the snapshot we're destroying.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	578 * Return:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	579 * BE_SUCCESS - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	580 * be_errno_t - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	581 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	582 * Semi-private (library wide use only)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	583 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	584 int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	585 _be_destroy_snapshot(char be_name, char snap_name)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	586 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	587 be_transaction_data_t bt = { 0 };
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	588 zfs_handle_t *zhp;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	589 char ss[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	590 char root_ds[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	591 int err = BE_SUCCESS, ret = BE_SUCCESS;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	592
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	593 /* Make sure we actaully have a snapshot name */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	594 if (snap_name == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	595 be_print_err(gettext("be_destroy_snapshot: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	596 "invalid snapshot name\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	597 return (BE_ERR_INVAL);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	598 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	599
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	600 /* Set parameters in bt structure */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	601 bt.obe_name = be_name;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	602 bt.obe_snap_name = snap_name;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	603
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	604 /* If original BE name not supplied, use current BE */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	605 if (bt.obe_name == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	606 if ((err = be_find_current_be(&bt)) != BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	607 return (err);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	608 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	609 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	610
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	611 /* Find which zpool be_name lives in */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	612 if ((ret = zpool_iter(g_zfs, be_find_zpool_callback, &bt)) == 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	613 be_print_err(gettext("be_destroy_snapshot: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	614 "failed to find zpool for BE (%s)\n"), bt.obe_name);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	615 return (BE_ERR_BE_NOENT);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	616 } else if (ret < 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	617 be_print_err(gettext("be_destroy_snapshot: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	618 "zpool_iter failed: %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	619 libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	620 return (zfs_err_to_be_err(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	621 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	622
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	623 be_make_root_ds(bt.obe_zpool, bt.obe_name, root_ds,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	624 sizeof (root_ds));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	625 bt.obe_root_ds = root_ds;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	626
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	627 zhp = zfs_open(g_zfs, bt.obe_root_ds, ZFS_TYPE_DATASET);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	628 if (zhp == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	629 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	630 * The zfs_open failed, return an error.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	631 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	632 be_print_err(gettext("be_destroy_snapshot: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	633 "failed to open BE root dataset (%s): %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	634 bt.obe_root_ds, libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	635 err = zfs_err_to_be_err(g_zfs);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	636 } else {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	637 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	638 * Generate the name of the snapshot to take.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	639 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	640 (void) snprintf(ss, sizeof (ss), "%s@%s", bt.obe_name,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	641 bt.obe_snap_name);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	642
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	643 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	644 * destroy the snapshot.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	645 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	646 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	647 * The boolean set to B_FALSE and passed to zfs_destroy_snaps()
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	648 * tells zfs to process and destroy the snapshots now.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	649 * Otherwise the call will potentially return where the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	650 * snapshot isn't actually destroyed yet, and ZFS is waiting
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	651 * until all the references to the snapshot have been
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	652 * released before actually destroying the snapshot.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	653 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	654 if (zfs_destroy_snaps(zhp, bt.obe_snap_name, B_FALSE) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	655 err = zfs_err_to_be_err(g_zfs);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	656 be_print_err(gettext("be_destroy_snapshot: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	657 "failed to destroy snapshot %s: %s\n"), ss,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	658 libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	659 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	660 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	661
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	662 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	663
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	664 return (err);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	665 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	666
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	667 /* ******************************************************************** */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	668 /* Private Functions */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	669 /* ******************************************************************** */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	670
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	671 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	672 * Function: be_rollback_check_callback
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	673 * Description: Callback function used to iterate through a BE's filesystems
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	674 * to check if a given snapshot name exists.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	675 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	676 * zhp - zfs_handle_t pointer to filesystem being processed.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	677 * data - name of the snapshot to check for.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	678 * Returns:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	679 * 0 - Success, snapshot name exists for all filesystems.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	680 * be_errno_t - Failure, snapshot name does not exist for all
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	681 * filesystems.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	682 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	683 * Private
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	684 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	685 static int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	686 be_rollback_check_callback(zfs_handle_t zhp, void data)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	687 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	688 char *snap_name = data;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	689 char ss[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	690 int ret = BE_SUCCESS;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	691
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	692 /* Generate string for this filesystem's snapshot name */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	693 (void) snprintf(ss, sizeof (ss), "%s@%s", zfs_get_name(zhp), snap_name);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	694
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	695 /* Check if snapshot exists */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	696 if (!zfs_dataset_exists(g_zfs, ss, ZFS_TYPE_SNAPSHOT)) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	697 be_print_err(gettext("be_rollback_check_callback: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	698 "snapshot does not exist %s\n"), ss);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	699 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	700 return (BE_ERR_SS_NOENT);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	701 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	702
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	703 /* Iterate this dataset's children and check them */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	704 if ((ret = zfs_iter_filesystems(zhp, be_rollback_check_callback,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	705 snap_name)) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	706 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	707 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	708 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	709
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	710 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	711 return (0);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	712 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	713
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	714 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	715 * Function: be_rollback_callback
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	716 * Description: Callback function used to iterate through a BE's filesystems
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	717 * and roll them all back to the specified snapshot name.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	718 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	719 * zhp - zfs_handle_t pointer to filesystem being processed.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	720 * data - name of snapshot to rollback to.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	721 * Returns:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	722 * 0 - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	723 * be_errno_t - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	724 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	725 * Private
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	726 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	727 static int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	728 be_rollback_callback(zfs_handle_t zhp, void data)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	729 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	730 zfs_handle_t *zhp_snap = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	731 char *snap_name = data;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	732 char ss[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	733 int ret = 0;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	734
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	735 /* Generate string for this filesystem's snapshot name */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	736 (void) snprintf(ss, sizeof (ss), "%s@%s", zfs_get_name(zhp), snap_name);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	737
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	738 /* Get handle to this filesystem's snapshot */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	739 if ((zhp_snap = zfs_open(g_zfs, ss, ZFS_TYPE_SNAPSHOT)) == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	740 be_print_err(gettext("be_rollback_callback: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	741 "failed to open snapshot %s: %s\n"), zfs_get_name(zhp),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	742 libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	743 ret = zfs_err_to_be_err(g_zfs);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	744 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	745 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	746 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	747
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	748 /* Rollback dataset */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	749 if (zfs_rollback(zhp, zhp_snap, B_FALSE) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	750 be_print_err(gettext("be_rollback_callback: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	751 "failed to rollback BE dataset %s to snapshot %s: %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	752 zfs_get_name(zhp), ss, libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	753 ret = zfs_err_to_be_err(g_zfs);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	754 ZFS_CLOSE(zhp_snap);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	755 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	756 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	757 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	758
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	759 ZFS_CLOSE(zhp_snap);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	760 /* Iterate this dataset's children and roll them back */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	761 if ((ret = zfs_iter_filesystems(zhp, be_rollback_callback,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	762 snap_name)) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	763 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	764 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	765 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	766
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	767 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	768 return (0);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	769 }

Mercurial > illumos > illumos-gate

annotate usr/src/lib/libbe/common/be_snapshot.c @ 13025:3c7681e3e323