b525630342
This change incorporates three major pieces: The first change is a keystore that manages wrapping and encryption keys for encrypted datasets. These commands mostly involve manipulating the new DSL Crypto Key ZAP Objects that live in the MOS. Each encrypted dataset has its own DSL Crypto Key that is protected with a user's key. This level of indirection allows users to change their keys without re-encrypting their entire datasets. The change implements the new subcommands "zfs load-key", "zfs unload-key" and "zfs change-key" which allow the user to manage their encryption keys and settings. In addition, several new flags and properties have been added to allow dataset creation and to make mounting and unmounting more convenient. The second piece of this patch provides the ability to encrypt, decyrpt, and authenticate protected datasets. Each object set maintains a Merkel tree of Message Authentication Codes that protect the lower layers, similarly to how checksums are maintained. This part impacts the zio layer, which handles the actual encryption and generation of MACs, as well as the ARC and DMU, which need to be able to handle encrypted buffers and protected data. The last addition is the ability to do raw, encrypted sends and receives. The idea here is to send raw encrypted and compressed data and receive it exactly as is on a backup system. This means that the dataset on the receiving system is protected using the same user key that is in use on the sending side. By doing so, datasets can be efficiently backed up to an untrusted system without fear of data being compromised. Reviewed by: Matthew Ahrens <mahrens@delphix.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Jorgen Lundman <lundman@lundman.net> Signed-off-by: Tom Caputi <tcaputi@datto.com> Closes #494 Closes #5769
411 lines
11 KiB
C
411 lines
11 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
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* Copyright (c) 2012 Cyril Plisko. All rights reserved.
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* Use is subject to license terms.
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*/
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/*
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* Copyright (c) 2013, 2016 by Delphix. All rights reserved.
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*/
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/*
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* Print intent log header and statistics.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <sys/zfs_context.h>
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#include <sys/spa.h>
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#include <sys/dmu.h>
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#include <sys/stat.h>
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#include <sys/resource.h>
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#include <sys/zil.h>
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#include <sys/zil_impl.h>
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#include <sys/abd.h>
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extern uint8_t dump_opt[256];
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static char prefix[4] = "\t\t\t";
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static void
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print_log_bp(const blkptr_t *bp, const char *prefix)
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{
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char blkbuf[BP_SPRINTF_LEN];
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snprintf_blkptr(blkbuf, sizeof (blkbuf), bp);
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(void) printf("%s%s\n", prefix, blkbuf);
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}
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/* ARGSUSED */
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static void
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zil_prt_rec_create(zilog_t *zilog, int txtype, lr_create_t *lr)
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{
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time_t crtime = lr->lr_crtime[0];
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char *name, *link;
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lr_attr_t *lrattr;
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name = (char *)(lr + 1);
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if (lr->lr_common.lrc_txtype == TX_CREATE_ATTR ||
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lr->lr_common.lrc_txtype == TX_MKDIR_ATTR) {
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lrattr = (lr_attr_t *)(lr + 1);
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name += ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
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}
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if (txtype == TX_SYMLINK) {
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link = name + strlen(name) + 1;
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(void) printf("%s%s -> %s\n", prefix, name, link);
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} else if (txtype != TX_MKXATTR) {
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(void) printf("%s%s\n", prefix, name);
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}
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(void) printf("%s%s", prefix, ctime(&crtime));
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(void) printf("%sdoid %llu, foid %llu, slots %llu, mode %llo\n", prefix,
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(u_longlong_t)lr->lr_doid,
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(u_longlong_t)LR_FOID_GET_OBJ(lr->lr_foid),
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(u_longlong_t)LR_FOID_GET_SLOTS(lr->lr_foid),
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(longlong_t)lr->lr_mode);
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(void) printf("%suid %llu, gid %llu, gen %llu, rdev 0x%llx\n", prefix,
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(u_longlong_t)lr->lr_uid, (u_longlong_t)lr->lr_gid,
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(u_longlong_t)lr->lr_gen, (u_longlong_t)lr->lr_rdev);
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}
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/* ARGSUSED */
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static void
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zil_prt_rec_remove(zilog_t *zilog, int txtype, lr_remove_t *lr)
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{
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(void) printf("%sdoid %llu, name %s\n", prefix,
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(u_longlong_t)lr->lr_doid, (char *)(lr + 1));
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}
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/* ARGSUSED */
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static void
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zil_prt_rec_link(zilog_t *zilog, int txtype, lr_link_t *lr)
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{
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(void) printf("%sdoid %llu, link_obj %llu, name %s\n", prefix,
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(u_longlong_t)lr->lr_doid, (u_longlong_t)lr->lr_link_obj,
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(char *)(lr + 1));
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}
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/* ARGSUSED */
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static void
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zil_prt_rec_rename(zilog_t *zilog, int txtype, lr_rename_t *lr)
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{
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char *snm = (char *)(lr + 1);
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char *tnm = snm + strlen(snm) + 1;
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(void) printf("%ssdoid %llu, tdoid %llu\n", prefix,
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(u_longlong_t)lr->lr_sdoid, (u_longlong_t)lr->lr_tdoid);
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(void) printf("%ssrc %s tgt %s\n", prefix, snm, tnm);
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}
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/* ARGSUSED */
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static int
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zil_prt_rec_write_cb(void *data, size_t len, void *unused)
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{
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char *cdata = data;
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int i;
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for (i = 0; i < len; i++) {
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if (isprint(*cdata))
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(void) printf("%c ", *cdata);
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else
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(void) printf("%2X", *cdata);
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cdata++;
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}
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return (0);
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}
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/* ARGSUSED */
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static void
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zil_prt_rec_write(zilog_t *zilog, int txtype, lr_write_t *lr)
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{
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abd_t *data;
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blkptr_t *bp = &lr->lr_blkptr;
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zbookmark_phys_t zb;
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int verbose = MAX(dump_opt['d'], dump_opt['i']);
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int error;
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(void) printf("%sfoid %llu, offset %llx, length %llx\n", prefix,
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(u_longlong_t)lr->lr_foid, (u_longlong_t)lr->lr_offset,
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(u_longlong_t)lr->lr_length);
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if (txtype == TX_WRITE2 || verbose < 5)
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return;
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if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) {
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(void) printf("%shas blkptr, %s\n", prefix,
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!BP_IS_HOLE(bp) &&
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bp->blk_birth >= spa_first_txg(zilog->zl_spa) ?
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"will claim" : "won't claim");
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print_log_bp(bp, prefix);
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if (BP_IS_HOLE(bp)) {
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(void) printf("\t\t\tLSIZE 0x%llx\n",
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(u_longlong_t)BP_GET_LSIZE(bp));
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(void) printf("%s<hole>\n", prefix);
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return;
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}
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if (bp->blk_birth < zilog->zl_header->zh_claim_txg) {
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(void) printf("%s<block already committed>\n", prefix);
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return;
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}
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SET_BOOKMARK(&zb, dmu_objset_id(zilog->zl_os),
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lr->lr_foid, ZB_ZIL_LEVEL,
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lr->lr_offset / BP_GET_LSIZE(bp));
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data = abd_alloc(BP_GET_LSIZE(bp), B_FALSE);
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error = zio_wait(zio_read(NULL, zilog->zl_spa,
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bp, data, BP_GET_LSIZE(bp), NULL, NULL,
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ZIO_PRIORITY_SYNC_READ, ZIO_FLAG_CANFAIL, &zb));
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if (error)
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goto out;
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} else {
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/* data is stored after the end of the lr_write record */
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data = abd_alloc(lr->lr_length, B_FALSE);
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abd_copy_from_buf(data, lr + 1, lr->lr_length);
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}
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(void) printf("%s", prefix);
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(void) abd_iterate_func(data,
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0, MIN(lr->lr_length, (verbose < 6 ? 20 : SPA_MAXBLOCKSIZE)),
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zil_prt_rec_write_cb, NULL);
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(void) printf("\n");
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out:
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abd_free(data);
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}
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/* ARGSUSED */
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static void
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zil_prt_rec_truncate(zilog_t *zilog, int txtype, lr_truncate_t *lr)
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{
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(void) printf("%sfoid %llu, offset 0x%llx, length 0x%llx\n", prefix,
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(u_longlong_t)lr->lr_foid, (longlong_t)lr->lr_offset,
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(u_longlong_t)lr->lr_length);
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}
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/* ARGSUSED */
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static void
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zil_prt_rec_setattr(zilog_t *zilog, int txtype, lr_setattr_t *lr)
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{
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time_t atime = (time_t)lr->lr_atime[0];
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time_t mtime = (time_t)lr->lr_mtime[0];
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(void) printf("%sfoid %llu, mask 0x%llx\n", prefix,
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(u_longlong_t)lr->lr_foid, (u_longlong_t)lr->lr_mask);
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if (lr->lr_mask & AT_MODE) {
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(void) printf("%sAT_MODE %llo\n", prefix,
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(longlong_t)lr->lr_mode);
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}
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if (lr->lr_mask & AT_UID) {
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(void) printf("%sAT_UID %llu\n", prefix,
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(u_longlong_t)lr->lr_uid);
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}
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if (lr->lr_mask & AT_GID) {
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(void) printf("%sAT_GID %llu\n", prefix,
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(u_longlong_t)lr->lr_gid);
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}
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if (lr->lr_mask & AT_SIZE) {
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(void) printf("%sAT_SIZE %llu\n", prefix,
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(u_longlong_t)lr->lr_size);
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}
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if (lr->lr_mask & AT_ATIME) {
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(void) printf("%sAT_ATIME %llu.%09llu %s", prefix,
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(u_longlong_t)lr->lr_atime[0],
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(u_longlong_t)lr->lr_atime[1],
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ctime(&atime));
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}
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if (lr->lr_mask & AT_MTIME) {
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(void) printf("%sAT_MTIME %llu.%09llu %s", prefix,
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(u_longlong_t)lr->lr_mtime[0],
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(u_longlong_t)lr->lr_mtime[1],
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ctime(&mtime));
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}
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}
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/* ARGSUSED */
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static void
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zil_prt_rec_acl(zilog_t *zilog, int txtype, lr_acl_t *lr)
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{
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(void) printf("%sfoid %llu, aclcnt %llu\n", prefix,
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(u_longlong_t)lr->lr_foid, (u_longlong_t)lr->lr_aclcnt);
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}
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typedef void (*zil_prt_rec_func_t)(zilog_t *, int, void *);
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typedef struct zil_rec_info {
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zil_prt_rec_func_t zri_print;
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char *zri_name;
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uint64_t zri_count;
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} zil_rec_info_t;
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static zil_rec_info_t zil_rec_info[TX_MAX_TYPE] = {
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{ NULL, "Total " },
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{ (zil_prt_rec_func_t)zil_prt_rec_create, "TX_CREATE " },
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{ (zil_prt_rec_func_t)zil_prt_rec_create, "TX_MKDIR " },
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{ (zil_prt_rec_func_t)zil_prt_rec_create, "TX_MKXATTR " },
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{ (zil_prt_rec_func_t)zil_prt_rec_create, "TX_SYMLINK " },
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{ (zil_prt_rec_func_t)zil_prt_rec_remove, "TX_REMOVE " },
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{ (zil_prt_rec_func_t)zil_prt_rec_remove, "TX_RMDIR " },
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{ (zil_prt_rec_func_t)zil_prt_rec_link, "TX_LINK " },
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{ (zil_prt_rec_func_t)zil_prt_rec_rename, "TX_RENAME " },
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{ (zil_prt_rec_func_t)zil_prt_rec_write, "TX_WRITE " },
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{ (zil_prt_rec_func_t)zil_prt_rec_truncate, "TX_TRUNCATE " },
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{ (zil_prt_rec_func_t)zil_prt_rec_setattr, "TX_SETATTR " },
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{ (zil_prt_rec_func_t)zil_prt_rec_acl, "TX_ACL_V0 " },
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{ (zil_prt_rec_func_t)zil_prt_rec_acl, "TX_ACL_ACL " },
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{ (zil_prt_rec_func_t)zil_prt_rec_create, "TX_CREATE_ACL " },
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{ (zil_prt_rec_func_t)zil_prt_rec_create, "TX_CREATE_ATTR " },
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{ (zil_prt_rec_func_t)zil_prt_rec_create, "TX_CREATE_ACL_ATTR " },
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{ (zil_prt_rec_func_t)zil_prt_rec_create, "TX_MKDIR_ACL " },
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{ (zil_prt_rec_func_t)zil_prt_rec_create, "TX_MKDIR_ATTR " },
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{ (zil_prt_rec_func_t)zil_prt_rec_create, "TX_MKDIR_ACL_ATTR " },
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{ (zil_prt_rec_func_t)zil_prt_rec_write, "TX_WRITE2 " },
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};
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/* ARGSUSED */
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static int
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print_log_record(zilog_t *zilog, lr_t *lr, void *arg, uint64_t claim_txg)
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{
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int txtype;
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int verbose = MAX(dump_opt['d'], dump_opt['i']);
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/* reduce size of txtype to strip off TX_CI bit */
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txtype = lr->lrc_txtype;
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ASSERT(txtype != 0 && (uint_t)txtype < TX_MAX_TYPE);
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ASSERT(lr->lrc_txg);
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(void) printf("\t\t%s%s len %6llu, txg %llu, seq %llu\n",
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(lr->lrc_txtype & TX_CI) ? "CI-" : "",
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zil_rec_info[txtype].zri_name,
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(u_longlong_t)lr->lrc_reclen,
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(u_longlong_t)lr->lrc_txg,
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(u_longlong_t)lr->lrc_seq);
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if (txtype && verbose >= 3) {
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if (!zilog->zl_os->os_encrypted) {
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zil_rec_info[txtype].zri_print(zilog, txtype, lr);
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} else {
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(void) printf("%s(encrypted)\n", prefix);
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}
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}
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zil_rec_info[txtype].zri_count++;
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zil_rec_info[0].zri_count++;
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return (0);
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}
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/* ARGSUSED */
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static int
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print_log_block(zilog_t *zilog, blkptr_t *bp, void *arg, uint64_t claim_txg)
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{
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char blkbuf[BP_SPRINTF_LEN + 10];
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int verbose = MAX(dump_opt['d'], dump_opt['i']);
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char *claim;
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if (verbose <= 3)
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return (0);
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if (verbose >= 5) {
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(void) strcpy(blkbuf, ", ");
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snprintf_blkptr(blkbuf + strlen(blkbuf),
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sizeof (blkbuf) - strlen(blkbuf), bp);
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} else {
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blkbuf[0] = '\0';
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}
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if (claim_txg != 0)
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claim = "already claimed";
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else if (bp->blk_birth >= spa_first_txg(zilog->zl_spa))
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claim = "will claim";
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else
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claim = "won't claim";
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(void) printf("\tBlock seqno %llu, %s%s\n",
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(u_longlong_t)bp->blk_cksum.zc_word[ZIL_ZC_SEQ], claim, blkbuf);
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return (0);
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}
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static void
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print_log_stats(int verbose)
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{
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int i, w, p10;
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if (verbose > 3)
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(void) printf("\n");
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if (zil_rec_info[0].zri_count == 0)
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return;
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for (w = 1, p10 = 10; zil_rec_info[0].zri_count >= p10; p10 *= 10)
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w++;
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for (i = 0; i < TX_MAX_TYPE; i++)
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if (zil_rec_info[i].zri_count || verbose >= 3)
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(void) printf("\t\t%s %*llu\n",
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zil_rec_info[i].zri_name, w,
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(u_longlong_t)zil_rec_info[i].zri_count);
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(void) printf("\n");
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}
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/* ARGSUSED */
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void
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dump_intent_log(zilog_t *zilog)
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{
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const zil_header_t *zh = zilog->zl_header;
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int verbose = MAX(dump_opt['d'], dump_opt['i']);
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int i;
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if (BP_IS_HOLE(&zh->zh_log) || verbose < 1)
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return;
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(void) printf("\n ZIL header: claim_txg %llu, "
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"claim_blk_seq %llu, claim_lr_seq %llu",
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(u_longlong_t)zh->zh_claim_txg,
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(u_longlong_t)zh->zh_claim_blk_seq,
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(u_longlong_t)zh->zh_claim_lr_seq);
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(void) printf(" replay_seq %llu, flags 0x%llx\n",
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(u_longlong_t)zh->zh_replay_seq, (u_longlong_t)zh->zh_flags);
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for (i = 0; i < TX_MAX_TYPE; i++)
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zil_rec_info[i].zri_count = 0;
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if (verbose >= 2) {
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(void) printf("\n");
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(void) zil_parse(zilog, print_log_block, print_log_record, NULL,
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zh->zh_claim_txg, B_FALSE);
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print_log_stats(verbose);
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}
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}
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