24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock/*
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * CDDL HEADER START
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock *
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * The contents of this file are subject to the terms of the
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * Common Development and Distribution License (the "License").
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * You may not use this file except in compliance with the License.
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock *
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * or http://www.opensolaris.org/os/licensing.
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * See the License for the specific language governing permissions
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * and limitations under the License.
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock *
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * When distributing Covered Code, include this CDDL HEADER in each
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * If applicable, add the following below this CDDL HEADER, with the
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * fields enclosed by brackets "[]" replaced with your own identifying
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * information: Portions Copyright [yyyy] [name of copyright owner]
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock *
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * CDDL HEADER END
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock */
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock/*
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * Use is subject to license terms.
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock */
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock#pragma ident "%Z%%M% %I% %E% SMI"
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock/*
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * Disk error transport module
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock *
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * This transport module is responsible for translating between disk errors
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * and FMA ereports. It is a read-only transport module, and checks for the
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * following failures:
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock *
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * - overtemp
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * - predictive failure
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * - self-test failure
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock *
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * These failures are detected via the TOPO_METH_DISK_STATUS method, which
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * leverages libdiskstatus to do the actual analysis. This transport module is
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * in charge of the following tasks:
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock *
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * - discovering available devices
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * - periodically checking devices
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * - managing device addition/removal
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock */
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock#include <ctype.h>
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock#include <fm/fmd_api.h>
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock#include <fm/libdiskstatus.h>
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock#include <fm/libtopo.h>
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock#include <fm/topo_hc.h>
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock#include <fm/topo_mod.h>
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock#include <limits.h>
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock#include <string.h>
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock#include <sys/fm/io/scsi.h>
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock#include <sys/fm/protocol.h>
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrockstatic struct dt_stat {
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock fmd_stat_t dropped;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock} dt_stats = {
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock { "dropped", FMD_TYPE_UINT64, "number of dropped ereports" }
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock};
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrocktypedef struct disk_monitor {
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock fmd_hdl_t *dm_hdl;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock fmd_xprt_t *dm_xprt;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock id_t dm_timer;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock hrtime_t dm_interval;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock char *dm_sim_search;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock char *dm_sim_file;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock boolean_t dm_timer_istopo;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock} disk_monitor_t;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrockstatic void
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrockdt_post_ereport(fmd_hdl_t *hdl, fmd_xprt_t *xprt, const char *protocol,
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock const char *faultname, uint64_t ena, nvlist_t *detector, nvlist_t *payload)
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock{
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock nvlist_t *nvl;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock int e = 0;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock char fullclass[PATH_MAX];
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock (void) snprintf(fullclass, sizeof (fullclass), "%s.io.%s.disk.%s",
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock FM_EREPORT_CLASS, protocol, faultname);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) == 0) {
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock e |= nvlist_add_string(nvl, FM_CLASS, fullclass);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock e |= nvlist_add_uint8(nvl, FM_VERSION, FM_EREPORT_VERSION);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock e |= nvlist_add_uint64(nvl, FM_EREPORT_ENA, ena);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock e |= nvlist_add_nvlist(nvl, FM_EREPORT_DETECTOR, detector);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock e |= nvlist_merge(nvl, payload, 0);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock if (e == 0) {
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock fmd_xprt_post(hdl, xprt, nvl, 0);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock } else {
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock nvlist_free(nvl);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock dt_stats.dropped.fmds_value.ui64++;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock }
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock } else {
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock dt_stats.dropped.fmds_value.ui64++;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock }
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock}
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock/*
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * Check a single topo node for failure. This simply invokes the disk status
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * method, and generates any ereports as necessary.
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock */
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrockstatic int
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrockdt_analyze_disk(topo_hdl_t *thp, tnode_t *node, void *arg)
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock{
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock nvlist_t *result;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock nvlist_t *fmri, *faults;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock char *protocol;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock int err;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock disk_monitor_t *dmp = arg;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock uint64_t ena;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock nvpair_t *elem;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock boolean_t fault;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock nvlist_t *details;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock char *fmristr;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock nvlist_t *in = NULL;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock if (topo_node_resource(node, &fmri, &err) != 0) {
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock fmd_hdl_error(dmp->dm_hdl, "failed to get fmri: %s\n",
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock topo_strerror(err));
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock return (TOPO_WALK_ERR);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock }
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock if (topo_hdl_nvalloc(thp, &in, NV_UNIQUE_NAME) != 0) {
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock nvlist_free(fmri);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock return (TOPO_WALK_ERR);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock }
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock if (dmp->dm_sim_search) {
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock fmristr = NULL;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock if (topo_fmri_nvl2str(thp, fmri, &fmristr, &err) == 0 &&
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock strstr(fmristr, dmp->dm_sim_search) != 0)
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock (void) nvlist_add_string(in, "path", dmp->dm_sim_file);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock topo_hdl_strfree(thp, fmristr);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock }
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock /*
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * Try to invoke the method. If this fails (most likely because the
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * method is not supported), then ignore this node.
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock */
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock if (topo_method_invoke(node, TOPO_METH_DISK_STATUS,
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock TOPO_METH_DISK_STATUS_VERSION, in, &result, &err) != 0) {
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock nvlist_free(fmri);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock nvlist_free(in);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock return (TOPO_WALK_NEXT);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock }
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock nvlist_free(in);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock ena = fmd_event_ena_create(dmp->dm_hdl);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock /*
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * Add any faults.
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock */
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock if (nvlist_lookup_nvlist(result, "faults", &faults) == 0 &&
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock nvlist_lookup_string(result, "protocol", &protocol) == 0) {
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock elem = NULL;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock while ((elem = nvlist_next_nvpair(faults, elem)) != NULL) {
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock if (nvpair_type(elem) != DATA_TYPE_BOOLEAN_VALUE)
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock continue;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock (void) nvpair_value_boolean_value(elem, &fault);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock if (!fault ||
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock nvlist_lookup_nvlist(result, nvpair_name(elem),
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock &details) != 0)
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock continue;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock dt_post_ereport(dmp->dm_hdl, dmp->dm_xprt, protocol,
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock nvpair_name(elem), ena, fmri, details);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock }
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock }
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock nvlist_free(result);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock nvlist_free(fmri);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock return (TOPO_WALK_NEXT);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock}
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock/*
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * Periodic timeout. Iterates over all hc:// topo nodes, calling
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * dt_analyze_disk() for each one.
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock */
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock/*ARGSUSED*/
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrockstatic void
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrockdt_timeout(fmd_hdl_t *hdl, id_t id, void *data)
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock{
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock topo_hdl_t *thp;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock topo_walk_t *twp;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock int err;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock disk_monitor_t *dmp = fmd_hdl_getspecific(hdl);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock dmp->dm_hdl = hdl;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock thp = fmd_hdl_topo_hold(hdl, TOPO_VERSION);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock if ((twp = topo_walk_init(thp, FM_FMRI_SCHEME_HC, dt_analyze_disk,
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock dmp, &err)) == NULL) {
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock fmd_hdl_topo_rele(hdl, thp);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock fmd_hdl_error(hdl, "failed to get topology: %s\n",
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock topo_strerror(err));
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock return;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock }
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock if (topo_walk_step(twp, TOPO_WALK_CHILD) == TOPO_WALK_ERR) {
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock topo_walk_fini(twp);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock fmd_hdl_topo_rele(hdl, thp);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock fmd_hdl_error(hdl, "failed to walk topology\n");
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock return;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock }
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock topo_walk_fini(twp);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock fmd_hdl_topo_rele(hdl, thp);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock dmp->dm_timer = fmd_timer_install(hdl, NULL, NULL, dmp->dm_interval);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock dmp->dm_timer_istopo = B_FALSE;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock}
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock/*
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * Called when the topology may have changed. We want to examine all disks in
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * case a new one has been inserted, but we don't want to overwhelm the system
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * in the event of a flurry of topology changes, as most likely only a small
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * number of disks are changing. To avoid this, we set the timer for a small
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * but non-trivial interval (by default 1 minute), and ignore intervening
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * changes during this period. This still gives us a reasonable response time
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * to newly inserted devices without overwhelming the system if lots of hotplug
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * activity is going on.
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock */
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock/*ARGSUSED*/
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrockstatic void
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrockdt_topo_change(fmd_hdl_t *hdl, topo_hdl_t *thp)
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock{
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock disk_monitor_t *dmp = fmd_hdl_getspecific(hdl);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock if (dmp->dm_timer_istopo)
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock return;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock fmd_timer_remove(hdl, dmp->dm_timer);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock dmp->dm_timer = fmd_timer_install(hdl, NULL, NULL,
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock fmd_prop_get_int64(hdl, "min-interval"));
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock dmp->dm_timer_istopo = B_TRUE;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock}
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrockstatic const fmd_prop_t fmd_props[] = {
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock { "interval", FMD_TYPE_TIME, "1h" },
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock { "min-interval", FMD_TYPE_TIME, "1min" },
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock { "simulate", FMD_TYPE_STRING, "" },
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock { NULL, 0, NULL }
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock};
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrockstatic const fmd_hdl_ops_t fmd_ops = {
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock NULL, /* fmdo_recv */
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock dt_timeout, /* fmdo_timeout */
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock NULL, /* fmdo_close */
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock NULL, /* fmdo_stats */
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock NULL, /* fmdo_gc */
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock NULL, /* fmdo_send */
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock dt_topo_change, /* fmdo_topo_change */
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock};
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrockstatic const fmd_hdl_info_t fmd_info = {
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock "Disk Transport Agent", "1.0", &fmd_ops, fmd_props
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock};
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrockvoid
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock_fmd_init(fmd_hdl_t *hdl)
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock{
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock disk_monitor_t *dmp;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock char *simulate;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock if (fmd_hdl_register(hdl, FMD_API_VERSION, &fmd_info) != 0)
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock return;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock (void) fmd_stat_create(hdl, FMD_STAT_NOALLOC,
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock sizeof (dt_stats) / sizeof (fmd_stat_t),
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock (fmd_stat_t *)&dt_stats);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock dmp = fmd_hdl_zalloc(hdl, sizeof (disk_monitor_t), FMD_SLEEP);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock fmd_hdl_setspecific(hdl, dmp);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock dmp->dm_xprt = fmd_xprt_open(hdl, FMD_XPRT_RDONLY, NULL, NULL);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock dmp->dm_interval = fmd_prop_get_int64(hdl, "interval");
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock /*
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * Determine if we have the simulate property set. This property allows
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * the developer to substitute a faulty device based off all or part of
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * an FMRI string. For example, one could do:
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock *
184cd04c26b064536977dfbb913a1240eaf6f708cth * setprop simulate "bay=4/disk=4 /path/to/sim.so"
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock *
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * When the transport module encounters an FMRI containing the given
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * string, then it will open the simulator file instead of the
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * corresponding device. This can be any file, but is intended to be a
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * libdiskstatus simulator shared object, capable of faking up SCSI
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * responses.
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock *
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * The property consists of two strings, an FMRI fragment and an
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * absolute path, separated by whitespace.
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock */
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock simulate = fmd_prop_get_string(hdl, "simulate");
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock if (simulate[0] != '\0') {
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock const char *sep;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock size_t len;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock for (sep = simulate; *sep != '\0'; sep++) {
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock if (isspace(*sep))
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock break;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock }
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock if (*sep != '\0') {
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock len = sep - simulate;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock dmp->dm_sim_search = fmd_hdl_alloc(hdl,
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock len + 1, FMD_SLEEP);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock (void) memcpy(dmp->dm_sim_search, simulate, len);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock dmp->dm_sim_search[len] = '\0';
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock }
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock for (; *sep != '\0'; sep++) {
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock if (!isspace(*sep))
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock break;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock }
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock if (*sep != '\0') {
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock dmp->dm_sim_file = fmd_hdl_strdup(hdl, sep, FMD_SLEEP);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock } else if (dmp->dm_sim_search) {
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock fmd_hdl_strfree(hdl, dmp->dm_sim_search);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock dmp->dm_sim_search = NULL;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock }
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock }
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock fmd_prop_free_string(hdl, simulate);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock /*
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * Call our initial timer routine. This will do an initial check of all
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock * the disks, and then start the periodic timeout.
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock */
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock dmp->dm_timer = fmd_timer_install(hdl, NULL, NULL, 0);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock}
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrockvoid
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock_fmd_fini(fmd_hdl_t *hdl)
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock{
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock disk_monitor_t *dmp;
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock dmp = fmd_hdl_getspecific(hdl);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock if (dmp) {
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock fmd_xprt_close(hdl, dmp->dm_xprt);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock fmd_hdl_strfree(hdl, dmp->dm_sim_search);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock fmd_hdl_strfree(hdl, dmp->dm_sim_file);
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock fmd_hdl_free(hdl, dmp, sizeof (*dmp));
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock }
24db46411fd54f70c35b94bb952eb7ba040e43b4eschrock}