cmd/zdb/zdb_il.c

	zdb_il.c revision d80c45e0f58fa434ba37259ea2e2b12e0380c19a
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"

/*
 * Print intent log header and statistics.
 */

#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <sys/zfs_context.h>
#include <sys/spa.h>
#include <sys/dmu.h>
#include <sys/stat.h>
#include <sys/resource.h>
#include <sys/zil.h>
#include <sys/zil_impl.h>

extern uint8_t dump_opt[256];

static void
print_log_bp(const blkptr_t *bp, const char *prefix)
{
    char blkbuf[BP_SPRINTF_LEN];

    sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp);
    (void) printf("%s%s\n", prefix, blkbuf);
}

/* ARGSUSED */
static void
zil_prt_rec_create(zilog_t *zilog, int txtype, lr_create_t *lr)
{
    time_t crtime = lr->lr_crtime[0];
    char *name = (char *)(lr + 1);
    char *link = name + strlen(name) + 1;

    if (txtype == TX_SYMLINK)
        (void) printf("\t\t\t%s -> %s\n", name, link);
    else
        (void) printf("\t\t\t%s\n", name);

    (void) printf("\t\t\t%s", ctime(&crtime));
    (void) printf("\t\t\tdoid %llu, foid %llu, mode %llo\n",
        (u_longlong_t)lr->lr_doid, (u_longlong_t)lr->lr_foid,
        (longlong_t)lr->lr_mode);
    (void) printf("\t\t\tuid %llu, gid %llu, gen %llu, rdev 0x%llx\n",
        (u_longlong_t)lr->lr_uid, (u_longlong_t)lr->lr_gid,
        (u_longlong_t)lr->lr_gen, (u_longlong_t)lr->lr_rdev);
}

/* ARGSUSED */
static void
zil_prt_rec_remove(zilog_t *zilog, int txtype, lr_remove_t *lr)
{
    (void) printf("\t\t\tdoid %llu, name %s\n",
        (u_longlong_t)lr->lr_doid, (char *)(lr + 1));
}

/* ARGSUSED */
static void
zil_prt_rec_link(zilog_t *zilog, int txtype, lr_link_t *lr)
{
    (void) printf("\t\t\tdoid %llu, link_obj %llu, name %s\n",
        (u_longlong_t)lr->lr_doid, (u_longlong_t)lr->lr_link_obj,
        (char *)(lr + 1));
}

/* ARGSUSED */
static void
zil_prt_rec_rename(zilog_t *zilog, int txtype, lr_rename_t *lr)
{
    char *snm = (char *)(lr + 1);
    char *tnm = snm + strlen(snm) + 1;

    (void) printf("\t\t\tsdoid %llu, tdoid %llu\n",
        (u_longlong_t)lr->lr_sdoid, (u_longlong_t)lr->lr_tdoid);
    (void) printf("\t\t\tsrc %s tgt %s\n", snm, tnm);
}

/* ARGSUSED */
static void
zil_prt_rec_write(zilog_t *zilog, int txtype, lr_write_t *lr)
{
    char *data, *dlimit;
    blkptr_t *bp = &lr->lr_blkptr;
    char buf[SPA_MAXBLOCKSIZE];
    int verbose = MAX(dump_opt['d'], dump_opt['i']);
    int error;

    (void) printf("\t\t\tfoid %llu, offset 0x%llx,"
        " length 0x%llx, blkoff 0x%llx\n",
        (u_longlong_t)lr->lr_foid, (longlong_t)lr->lr_offset,
        (u_longlong_t)lr->lr_length, (u_longlong_t)lr->lr_blkoff);

    if (verbose < 5)
        return;

    if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) {
        (void) printf("\t\t\thas blkptr, %s\n",
            bp->blk_birth >= spa_first_txg(zilog->zl_spa) ?
            "will claim" : "won't claim");
        print_log_bp(bp, "\t\t\t");
        if (bp->blk_birth == 0) {
            bzero(buf, sizeof (buf));
        } else {
            zbookmark_t zb;

            ASSERT3U(bp->blk_cksum.zc_word[ZIL_ZC_OBJSET], ==,
                dmu_objset_id(zilog->zl_os));

            zb.zb_objset = bp->blk_cksum.zc_word[ZIL_ZC_OBJSET];
            zb.zb_object = 0;
            zb.zb_level = -1;
            zb.zb_blkid = bp->blk_cksum.zc_word[ZIL_ZC_SEQ];

            error = zio_wait(zio_read(NULL, zilog->zl_spa,
                bp, buf, BP_GET_LSIZE(bp), NULL, NULL,
                ZIO_PRIORITY_SYNC_READ, ZIO_FLAG_CANFAIL, &zb));
            if (error)
                return;
        }
        data = buf + lr->lr_blkoff;
    } else {
        data = (char *)(lr + 1);
    }

    dlimit = data + MIN(lr->lr_length,
        (verbose < 6 ? 20 : SPA_MAXBLOCKSIZE));

    (void) printf("\t\t\t");
    while (data < dlimit) {
        if (isprint(*data))
            (void) printf("%c ", *data);
        else
            (void) printf("%2X", *data);
        data++;
    }
    (void) printf("\n");
}

/* ARGSUSED */
static void
zil_prt_rec_truncate(zilog_t *zilog, int txtype, lr_truncate_t *lr)
{
    (void) printf("\t\t\tfoid %llu, offset 0x%llx, length 0x%llx\n",
        (u_longlong_t)lr->lr_foid, (longlong_t)lr->lr_offset,
        (u_longlong_t)lr->lr_length);
}

/* ARGSUSED */
static void
zil_prt_rec_setattr(zilog_t *zilog, int txtype, lr_setattr_t *lr)
{
    time_t atime = (time_t)lr->lr_atime[0];
    time_t mtime = (time_t)lr->lr_mtime[0];

    (void) printf("\t\t\tfoid %llu, mask 0x%llx\n",
        (u_longlong_t)lr->lr_foid, (u_longlong_t)lr->lr_mask);

    if (lr->lr_mask & AT_MODE) {
        (void) printf("\t\t\tAT_MODE  %llo\n",
            (longlong_t)lr->lr_mode);
    }

    if (lr->lr_mask & AT_UID) {
        (void) printf("\t\t\tAT_UID   %llu\n",
            (u_longlong_t)lr->lr_uid);
    }

    if (lr->lr_mask & AT_GID) {
        (void) printf("\t\t\tAT_GID   %llu\n",
            (u_longlong_t)lr->lr_gid);
    }

    if (lr->lr_mask & AT_SIZE) {
        (void) printf("\t\t\tAT_SIZE  %llu\n",
            (u_longlong_t)lr->lr_size);
    }

    if (lr->lr_mask & AT_ATIME) {
        (void) printf("\t\t\tAT_ATIME %llu.%09llu %s",
            (u_longlong_t)lr->lr_atime[0],
            (u_longlong_t)lr->lr_atime[1],
            ctime(&atime));
    }

    if (lr->lr_mask & AT_MTIME) {
        (void) printf("\t\t\tAT_MTIME %llu.%09llu %s",
            (u_longlong_t)lr->lr_mtime[0],
            (u_longlong_t)lr->lr_mtime[1],
            ctime(&mtime));
    }
}

/* ARGSUSED */
static void
zil_prt_rec_acl(zilog_t *zilog, int txtype, lr_acl_t *lr)
{
    (void) printf("\t\t\tfoid %llu, aclcnt %llu\n",
        (u_longlong_t)lr->lr_foid, (u_longlong_t)lr->lr_aclcnt);
}

typedef void (*zil_prt_rec_func_t)();
typedef struct zil_rec_info {
    zil_prt_rec_func_t  zri_print;
    char            *zri_name;
    uint64_t        zri_count;
} zil_rec_info_t;

static zil_rec_info_t zil_rec_info[TX_MAX_TYPE] = {
    {   NULL,           "Total      "   },
    {   zil_prt_rec_create, "TX_CREATE  "   },
    {   zil_prt_rec_create, "TX_MKDIR   "   },
    {   zil_prt_rec_create, "TX_MKXATTR "   },
    {   zil_prt_rec_create, "TX_SYMLINK "   },
    {   zil_prt_rec_remove, "TX_REMOVE  "   },
    {   zil_prt_rec_remove, "TX_RMDIR   "   },
    {   zil_prt_rec_link,   "TX_LINK    "   },
    {   zil_prt_rec_rename, "TX_RENAME  "   },
    {   zil_prt_rec_write,  "TX_WRITE   "   },
    {   zil_prt_rec_truncate,   "TX_TRUNCATE"   },
    {   zil_prt_rec_setattr,    "TX_SETATTR "   },
    {   zil_prt_rec_acl,    "TX_ACL     "   },
};

/* ARGSUSED */
static void
print_log_record(zilog_t *zilog, lr_t *lr, void *arg, uint64_t claim_txg)
{
    int txtype;
    int verbose = MAX(dump_opt['d'], dump_opt['i']);

    txtype = lr->lrc_txtype;

    ASSERT(txtype != 0 && (uint_t)txtype < TX_MAX_TYPE);
    ASSERT(lr->lrc_txg);

    (void) printf("\t\t%s len %6llu, txg %llu, seq %llu\n",
        zil_rec_info[txtype].zri_name,
        (u_longlong_t)lr->lrc_reclen,
        (u_longlong_t)lr->lrc_txg,
        (u_longlong_t)lr->lrc_seq);

    if (txtype && verbose >= 3)
        zil_rec_info[txtype].zri_print(zilog, txtype, lr);

    zil_rec_info[txtype].zri_count++;
    zil_rec_info[0].zri_count++;
}

/* ARGSUSED */
static void
print_log_block(zilog_t *zilog, blkptr_t *bp, void *arg, uint64_t claim_txg)
{
    char blkbuf[BP_SPRINTF_LEN];
    int verbose = MAX(dump_opt['d'], dump_opt['i']);
    char *claim;

    if (verbose <= 3)
        return;

    if (verbose >= 5) {
        (void) strcpy(blkbuf, ", ");
        sprintf_blkptr(blkbuf + strlen(blkbuf),
            BP_SPRINTF_LEN - strlen(blkbuf), bp);
    } else {
        blkbuf[0] = '\0';
    }

    if (claim_txg != 0)
        claim = "already claimed";
    else if (bp->blk_birth >= spa_first_txg(zilog->zl_spa))
        claim = "will claim";
    else
        claim = "won't claim";

    (void) printf("\tBlock seqno %llu, %s%s\n",
        (u_longlong_t)bp->blk_cksum.zc_word[ZIL_ZC_SEQ], claim, blkbuf);
}

static void
print_log_stats(int verbose)
{
    int i, w, p10;

    if (verbose > 3)
        (void) printf("\n");

    if (zil_rec_info[0].zri_count == 0)
        return;

    for (w = 1, p10 = 10; zil_rec_info[0].zri_count >= p10; p10 *= 10)
        w++;

    for (i = 0; i < TX_MAX_TYPE; i++)
        if (zil_rec_info[i].zri_count || verbose >= 3)
            (void) printf("\t\t%s %*llu\n",
                zil_rec_info[i].zri_name, w,
                (u_longlong_t)zil_rec_info[i].zri_count);
    (void) printf("\n");
}

/* ARGSUSED */
void
dump_intent_log(zilog_t *zilog)
{
    const zil_header_t *zh = zilog->zl_header;
    int verbose = MAX(dump_opt['d'], dump_opt['i']);
    int i;

    if (zh->zh_log.blk_birth == 0 || verbose < 2)
        return;

    (void) printf("\n    ZIL header: claim_txg %llu, seq %llu\n",
        (u_longlong_t)zh->zh_claim_txg, (u_longlong_t)zh->zh_replay_seq);

    if (verbose >= 4)
        print_log_bp(&zh->zh_log, "\n\tfirst block: ");

    for (i = 0; i < TX_MAX_TYPE; i++)
        zil_rec_info[i].zri_count = 0;

    if (verbose >= 2) {
        (void) printf("\n");
        (void) zil_parse(zilog, print_log_block, print_log_record, NULL,
            zh->zh_claim_txg);
        print_log_stats(verbose);
    }
}