modules/md/dumphotspare.c

	dumphotspare.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (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 2003 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

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

#include "mdinclude.h"

static void
printhsp(hot_spare_pool_t hsp, uintptr_t hsp_addr)
{
    int     i = 0;
    uintptr_t   hs_addr;
    int recid;

    mdb_inc_indent(2);
    mdb_printf("hsp_next: %p\n", hsp.hsp_next);
    mdb_printf("hsp_link:\n");
    mdb_inc_indent(2);
    mdb_printf("ln_next: %p\n", hsp.hsp_link.ln_next);
    mdb_printf("ln_setno: %u\n", hsp.hsp_link.ln_setno);
    mdb_printf("ln_id: %u\n", hsp.hsp_link.ln_id);
    mdb_inc_indent(2);
    mdb_printf("--- on disk structures ---\n");
    mdb_printf("hsp_revision:   %u\n", hsp.hsp_revision);
    mdb_printf("hsp_self_id:    %u \n", hsp.hsp_self_id);
    mdb_printf("hsp_record_id:  %d \n", hsp.hsp_record_id);
    mdb_printf("hsp_refcount:   %d\n", hsp.hsp_refcount);
    mdb_printf("hsp_nhotspares: %d # Number of slices in the pool\n",
        hsp.hsp_nhotspares);
    mdb_inc_indent(1);

    hs_addr = hsp_addr + ((uintptr_t)&hsp.hsp_hotspares - (uintptr_t)&hsp);

    for (i = 0; i < hsp.hsp_nhotspares; i++) {
        if (mdb_vread(&recid, sizeof (int), hs_addr) !=
            sizeof (int)) {
            mdb_warn("failed to read recid at %p\n", hs_addr);
            break;
        }
        mdb_printf("hsp_hotspares[%d]: %d", i, recid);
        mdb_printf(" # should match an hs_record_id in s_hs list\n");
        hs_addr += (uintptr_t)sizeof (int);
    }
    mdb_dec_indent(1);
    mdb_printf("--- end of on disk ---\n");
    mdb_dec_indent(2);
    mdb_dec_indent(2);
    mdb_dec_indent(2);
}

static void
process_hsp(uintptr_t addr)
{
    hot_spare_pool_t    hsp;

    if (mdb_vread(&hsp, sizeof (hot_spare_pool_t), addr) !=
        sizeof (hot_spare_pool_t)) {
        mdb_warn("failed to read hot_spare_pool_t at %p\n", addr);
        return;
    }
    mdb_inc_indent(2);
    mdb_printf("%p\n", addr);
    printhsp(hsp, addr);
    mdb_dec_indent(2);
}
/*
 * Dump out the hotspare pools
 * usage: ::dumphotspare
 */
int
dumphotspare(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
{
    if (argc != 0)  /* ensure no options */
        return (DCMD_USAGE);

    snarf_sets();

    if (!(flags & DCMD_ADDRSPEC)) {
        if (mdb_walk_dcmd("hotsparepool", "dumphotspare", argc,
            argv) == -1) {
            mdb_warn("failed to walk hotsparepool");
            return (DCMD_ERR);
        }
        return (DCMD_OK);
    }

    process_hsp(addr);

    return (DCMD_OK);
}