--- /dev/null
+/*
+ * Copyright (C) 2009-2010 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU Lesser General Public License v.2.1.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "lib.h"
+#include "metadata.h"
+#include "segtype.h"
+
+/* Add lv as replicator_dev device */
+int replicator_dev_add_rimage(struct replicator_device *rdev,
+ struct logical_volume *lv)
+{
+ if (!lv || !rdev)
+ return_0;
+
+ if (lv_is_rimage(lv)) {
+ log_error("Logical volume %s is already part of other "
+ "replicator.", lv->name);
+ return 0;
+ }
+
+ if (rdev->lv) {
+ log_error("Logical volume %s can not be attached to an "
+ "already defined replicator device", lv->name);
+ return 0;
+ }
+
+ lv_set_hidden(lv);
+ lv->rdevice = rdev;
+ rdev->lv = lv;
+
+ return add_seg_to_segs_using_this_lv(lv, rdev->replicator_dev);
+}
+
+/* Remove lv from replicator_dev device */
+struct logical_volume *replicator_dev_remove_rimage(struct replicator_device *rdev)
+{
+ struct logical_volume *lv;
+
+ if (!rdev || !rdev->lv)
+ return_NULL;
+
+ lv = rdev->lv;
+ if (!remove_seg_from_segs_using_this_lv(lv, rdev->replicator_dev))
+ return_NULL;
+
+ /* FIXME: - check for site references */
+ rdev->lv = NULL;
+ lv->rdevice = NULL;
+ lv_set_visible(lv);
+
+ return lv;
+}
+
+int replicator_dev_add_slog(struct replicator_device *rdev,
+ struct logical_volume *slog)
+{
+ if (!slog || !rdev)
+ return_0;
+
+ if (rdev->slog) {
+ log_error("Replicator device in site %s already has sync log.",
+ rdev->rsite->name);
+ return 0;
+ }
+
+ if (slog->rdevice) {
+ log_error("Sync log %s is already used by replicator %s.",
+ slog->name, slog->rdevice->rsite->replicator->name);
+ return 0;
+ }
+
+ lv_set_hidden(slog);
+ slog->rdevice = rdev;
+ rdev->slog = slog;
+
+ return add_seg_to_segs_using_this_lv(slog, rdev->replicator_dev);
+}
+
+struct logical_volume *replicator_dev_remove_slog(struct replicator_device *rdev)
+{
+ struct logical_volume *lv;
+
+ if (!rdev)
+ return_NULL;
+
+ lv = rdev->slog;
+ if (!lv) {
+ log_error("Replicator device in site %s does not have sync log.",
+ rdev->rsite->name);
+ return NULL;
+ }
+
+ if (!remove_seg_from_segs_using_this_lv(lv, rdev->replicator_dev))
+ return_NULL;
+
+ rdev->slog = NULL;
+ lv->rdevice = NULL;
+ lv_set_visible(lv);
+
+ return lv;
+}
+
+int replicator_add_replicator_dev(struct logical_volume *replicator_lv,
+ struct lv_segment *replicator_dev_seg)
+{
+ if (!replicator_lv)
+ return_0;
+
+ if (!(replicator_lv->status & REPLICATOR)) {
+ dm_list_init(&replicator_lv->rsites);
+ lv_set_hidden(replicator_lv);
+ replicator_lv->status |= REPLICATOR;
+ }
+
+ if (!replicator_dev_seg)
+ return 1;
+
+ if (replicator_dev_seg->replicator) {
+ log_error("Replicator device %s is already part of replicator.",
+ replicator_dev_seg->lv->name);
+ return 0;
+ }
+
+ replicator_dev_seg->replicator = replicator_lv;
+
+ return add_seg_to_segs_using_this_lv(replicator_lv, replicator_dev_seg);
+}
+
+/**
+ * Returns rimage ?? lv upon succeful detach of device
+ * entire LV entry should be removed by this crootall ??
+ */
+struct logical_volume *replicator_remove_replicator_dev(struct lv_segment *replicator_dev_seg)
+{
+ struct logical_volume *lv = NULL;
+
+ log_error("FIXME: not implemented.");
+#if 0
+ /* FIXME: - this is going to be complex.... */
+ if (!replicator_dev_seg)
+ return_NULL;
+
+ /* if slog or rimage - exit */
+
+ if (!remove_seg_from_segs_using_this_lv(lv, replicator_seg))
+ return_NULL;
+
+ replicator_seg->rlog_lv = NULL;
+ lv->status &= ~REPLICATOR_LOG;
+ lv_set_visible(lv);
+#endif
+
+ return lv;
+}
+
+int replicator_add_rlog(struct lv_segment *replicator_seg,
+ struct logical_volume *rlog_lv)
+{
+ if (!rlog_lv)
+ return_0;
+
+ if (rlog_lv->status & REPLICATOR_LOG) {
+ log_error("Rlog device %s is already used.", rlog_lv->name);
+ return 0;
+ }
+
+ lv_set_hidden(rlog_lv);
+ rlog_lv->status |= REPLICATOR_LOG;
+ replicator_seg->rlog_lv = rlog_lv;
+
+ return add_seg_to_segs_using_this_lv(rlog_lv, replicator_seg);
+}
+
+struct logical_volume *replicator_remove_rlog(struct lv_segment *replicator_seg)
+{
+ struct logical_volume *lv;
+
+ if (!replicator_seg)
+ return_0;
+
+ if (!(lv = replicator_seg->rlog_lv)) {
+ log_error("Replog segment %s does not have rlog.",
+ replicator_seg->lv->name);
+ return NULL;
+ }
+
+ if (!remove_seg_from_segs_using_this_lv(lv, replicator_seg))
+ return_NULL;
+
+ replicator_seg->rlog_lv = NULL;
+ lv->status &= ~REPLICATOR_LOG;
+ lv_set_visible(lv);
+
+ return lv;
+}
+
+
+#if 0
+/*
+ * Create new LV to pretend the original LV
+ * this target will have a 'replicator' segment
+ */
+int lv_add_replicator(struct logical_volume *origin, const char *rep_suffix)
+{
+ struct logical_volume *rep_lv;
+ char *name;
+ size_t slen;
+
+ if (!(name = strstr(origin->name, rep_suffix))) {
+ log_error("Failed to find replicator suffix %s in LV name %s",
+ rep_suffix, origin->name);
+ return 0;
+ }
+ slen = (size_t)(name - origin->name);
+ name = alloca(slen + 1);
+ memcpy(name, origin->name, slen);
+ name[slen] = 0;
+
+ if ((rep_lv = find_lv(origin->vg, name))) {
+ rep_lv->status |= VIRTUAL;
+ return 1;
+ }
+
+ if (!(rep_lv = lv_create_empty(name, &origin->lvid,
+ LVM_READ | LVM_WRITE | VISIBLE_LV,
+ ALLOC_INHERIT, origin->vg)))
+ return_0;
+
+ if (!lv_add_virtual_segment(rep_lv, 0, origin->le_count,
+ get_segtype_from_string(origin->vg->cmd,
+ "error")))
+ return_0;
+
+ rep_lv->status |= VIRTUAL;
+ return 1;
+}
+
+int lv_remove_replicator(struct logical_volume *lv)
+{
+ return 1;
+}
+#endif
+
+/**
+ * Is this segment part of active replicator
+ */
+int lv_is_active_replicator_dev(const struct logical_volume *lv)
+{
+ return ((lv->status & REPLICATOR) &&
+ lv->rdevice &&
+ lv->rdevice->rsite &&
+ lv->rdevice->rsite->state == REPLICATOR_STATE_ACTIVE);
+}
+
+/**
+ * Is this LV replicator control device
+ */
+int lv_is_replicator(const struct logical_volume *lv)
+{
+ return ((lv->status & REPLICATOR) &&
+ !dm_list_empty(&lv->segments) &&
+ seg_is_replicator(first_seg(lv)));
+}
+
+/**
+ * Is this LV replicator device
+ */
+int lv_is_replicator_dev(const struct logical_volume *lv)
+{
+ return ((lv->status & REPLICATOR) &&
+ !dm_list_empty(&lv->segments) &&
+ seg_is_replicator_dev(first_seg(lv)));
+}
+
+/**
+ * Is this LV replicated origin lv
+ */
+int lv_is_rimage(const struct logical_volume *lv)
+{
+ return (lv->rdevice && lv->rdevice->lv == lv);
+}
+
+/**
+ * Is this LV rlog
+ */
+int lv_is_rlog(const struct logical_volume *lv)
+{
+ return (lv->status & REPLICATOR_LOG);
+}
+
+/**
+ * Is this LV sync log
+ */
+int lv_is_slog(const struct logical_volume *lv)
+{
+ return (lv->rdevice && lv->rdevice->slog == lv);
+}
+
+/**
+ * Returns first replicator-dev in site in case the LV is replicator-dev,
+ * NULL otherwise
+ */
+struct logical_volume *first_replicator_dev(const struct logical_volume *lv)
+{
+ struct replicator_device *rdev;
+ struct replicator_site *rsite;
+
+ if (lv_is_replicator_dev(lv))
+ dm_list_iterate_items(rsite, &first_seg(lv)->replicator->rsites) {
+ dm_list_iterate_items(rdev, &rsite->rdevices)
+ return rdev->replicator_dev->lv;
+ break;
+ }
+
+ return NULL;
+}
--- /dev/null
+/*
+ * Copyright (C) 2009-2010 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU Lesser General Public License v.2.1.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "lib.h"
+#include "toolcontext.h"
+#include "metadata.h"
+#include "segtype.h"
+#include "text_export.h"
+#include "text_import.h"
+#include "config.h"
+#include "activate.h"
+#include "str_list.h"
+#ifdef DMEVENTD
+# include "sharedlib.h"
+# include "libdevmapper-event.h"
+#endif
+
+/* Dm kernel module name for replicator */
+#define REPLICATOR_MODULE "replicator"
+#define REPLICATOR_DEV_MODULE "replicator-dev"
+
+/*
+ * Macro used as return argument - returns 0.
+ * return is left to be written in the function for better readability.
+ */
+#define SEG_LOG_ERROR(t, p...) \
+ log_error(t " segment %s of logical volume %s.", ## p, \
+ config_parent_name(sn), seg->lv->name), 0;
+
+
+/*
+ * Replicator target
+ */
+static const char *_replicator_name(const struct lv_segment *seg)
+{
+ return seg->segtype->name;
+}
+
+/* FIXME: missing implementation */
+static void _replicator_display(const struct lv_segment *seg)
+{
+ //const char *size;
+ //uint32_t s;
+
+ log_print(" Replicator");
+ if (seg->rlog_lv)
+ log_print(" Replicator volume\t%s", seg->rlog_lv->name);
+}
+
+/* Wrapper for get_config_uint32() with default value */
+static uint32_t _get_config_uint32(const struct config_node *cn,
+ const char *path,
+ uint32_t def)
+{
+ uint32_t t;
+
+ return get_config_uint32(cn, path, &t) ? t : def;
+}
+
+/* Wrapper for get_config_uint64() with default value */
+static uint64_t _get_config_uint64(const struct config_node *cn,
+ const char *path,
+ uint64_t def)
+{
+ uint64_t t;
+
+ return get_config_uint64(cn, path, &t) ? t : def;
+}
+
+
+/* Strings replicator_state_t enum */
+static const char _state_txt[NUM_REPLICATOR_STATE][8] = {
+ "passive",
+ "active"
+};
+
+/* Parse state string */
+static replicator_state_t _get_state(const struct config_node *sn,
+ const char *path, replicator_state_t def)
+{
+ char *str;
+ unsigned i;
+
+ if (get_config_str(sn, path, &str)) {
+ for (i = 0; i < sizeof(_state_txt)/sizeof(_state_txt[0]); ++i)
+ if (strcasecmp(str, _state_txt[i]) == 0)
+ return (replicator_state_t) i;
+
+ log_warn("%s: unknown value '%s', using default '%s' state",
+ path, str, _state_txt[def]);
+ }
+
+ return def;
+}
+
+/* Strings for replicator_action_t enum */
+static const char _op_mode_txt[NUM_DM_REPLICATOR_MODES][8] = {
+ "sync",
+ "warn",
+ "stall",
+ "drop",
+ "fail"
+};
+
+
+/* Parse action string */
+static dm_replicator_mode_t _get_op_mode(const struct config_node *sn,
+ const char *path, dm_replicator_mode_t def)
+{
+ char *str;
+ unsigned i;
+
+ if (get_config_str(sn, path, &str)) {
+ for (i = 0; i < sizeof(_op_mode_txt)/sizeof(_op_mode_txt[0]); ++i)
+ if (strcasecmp(str, _op_mode_txt[i]) == 0) {
+ log_very_verbose("Setting %s to %s",
+ path, _op_mode_txt[i]);
+ return (dm_replicator_mode_t) i;
+ }
+ log_warn("%s: unknown value '%s', using default '%s' operation mode",
+ path, str, _op_mode_txt[def]);
+ }
+
+ return def;
+}
+
+static struct replicator_site *_get_site(struct logical_volume *replicator,
+ const char *key)
+{
+ struct dm_pool *mem = replicator->vg->vgmem;
+ struct replicator_site *rsite;
+
+ dm_list_iterate_items(rsite, &replicator->rsites)
+ if (strcasecmp(rsite->name, key) == 0)
+ return rsite;
+
+ if (!(rsite = dm_pool_zalloc(mem, sizeof(*rsite))))
+ return_NULL;
+
+ if (!(rsite->name = dm_pool_strdup(mem, key)))
+ return_NULL;
+
+ rsite->replicator = replicator;
+ dm_list_init(&rsite->rdevices);
+ dm_list_add(&replicator->rsites, &rsite->list);
+
+ return rsite;
+}
+
+
+/* Parse replicator site element */
+static int _add_site(struct lv_segment *seg,
+ const char *key,
+ const struct config_node *sn)
+{
+ struct dm_pool *mem = seg->lv->vg->vgmem;
+ const struct config_node *cn;
+ struct replicator_site *rsite;
+
+ if (!(rsite = _get_site(seg->lv, key)))
+ return_0;
+
+ if (!find_config_node(sn, "site_index"))
+ return SEG_LOG_ERROR("Mandatory site_index is missing for");
+
+ rsite->state = _get_state(sn, "state", REPLICATOR_STATE_PASSIVE);
+ rsite->site_index = _get_config_uint32(sn, "site_index", 0);
+ if (rsite->site_index > seg->rsite_index_highest)
+ return SEG_LOG_ERROR("site_index=%d > highest_site_index=%d for",
+ rsite->site_index, seg->rsite_index_highest);
+
+ rsite->fall_behind_data = _get_config_uint64(sn, "fall_behind_data", 0);
+ rsite->fall_behind_ios = _get_config_uint32(sn, "fall_behind_ios", 0);
+ rsite->fall_behind_timeout = _get_config_uint32(sn, "fall_behind_timeout", 0);
+ rsite->op_mode = DM_REPLICATOR_SYNC;
+
+ if (rsite->fall_behind_data ||
+ rsite->fall_behind_ios ||
+ rsite->fall_behind_timeout) {
+ if (rsite->fall_behind_data && rsite->fall_behind_ios)
+ return SEG_LOG_ERROR("Defined both fall_behind_data "
+ "and fall_behind_ios in");
+
+ if (rsite->fall_behind_data && rsite->fall_behind_timeout)
+ return SEG_LOG_ERROR("Defined both fall_behind_data "
+ "and fall_behind_timeout in");
+
+ if (rsite->fall_behind_ios && rsite->fall_behind_timeout)
+ return SEG_LOG_ERROR("Defined both fall_behind_ios "
+ "and fall_behind_timeout in");
+
+ rsite->op_mode = _get_op_mode(sn, "operation_mode",
+ rsite->op_mode);
+ }
+
+ if ((cn = find_config_node(sn, "volume_group"))) {
+ if (!cn->v || cn->v->type != CFG_STRING)
+ return SEG_LOG_ERROR("volume_group must be a string in");
+
+ if (!(rsite->vg_name = dm_pool_strdup(mem, cn->v->v.str)))
+ return_0;
+
+ } else if (rsite->site_index != 0)
+ return SEG_LOG_ERROR("volume_group is mandatory for remote site in");
+
+ return 1;
+}
+
+
+/* Import replicator segment */
+static int _replicator_text_import(struct lv_segment *seg,
+ const struct config_node *sn,
+ struct dm_hash_table *pv_hash __attribute((unused)))
+{
+ const struct config_node *cn;
+ struct logical_volume *rlog_lv;
+
+ if (!replicator_add_replicator_dev(seg->lv, NULL))
+ return_0;
+
+ if (!(cn = find_config_node(sn, "replicator_log")) ||
+ !cn->v || cn->v->type != CFG_STRING)
+ return SEG_LOG_ERROR("Replicator log type must be a string in");
+
+ if (!(rlog_lv = find_lv(seg->lv->vg, cn->v->v.str)))
+ return SEG_LOG_ERROR("Unknown replicator log %s in",
+ cn->v->v.str);
+
+ if (!(cn = find_config_node(sn, "replicator_log_type")) ||
+ !cn->v || cn->v->type != CFG_STRING)
+ return SEG_LOG_ERROR("Replicator log's type must be a string in");
+ if (strcasecmp(cn->v->v.str, "ringbuffer"))
+ return SEG_LOG_ERROR("Only ringbuffer replicator log type is supported in");
+
+ if (!(seg->rlog_type = dm_pool_strdup(seg->lv->vg->vgmem, cn->v->v.str)))
+ return_0;
+
+
+ log_very_verbose("replicator_log = %s", rlog_lv->name);
+ log_very_verbose("replicator_log_type = %s", seg->rlog_type);
+
+ if (!replicator_add_rlog(seg, rlog_lv))
+ return_0;
+
+ seg->rdevice_index_highest = _get_config_uint64(sn, "highest_device_index", 0);
+ seg->rsite_index_highest = _get_config_uint32(sn, "highest_site_index", 0);
+
+ seg->region_size = _get_config_uint32(sn, "sync_log_size", 0);
+
+ for (; sn; sn = sn->sib)
+ if (!sn->v) {
+ for (cn = sn->sib; cn; cn = cn->sib)
+ if (!cn->v && (strcasecmp(cn->key ,sn->key) == 0))
+ return SEG_LOG_ERROR("Detected duplicate site "
+ "name %s in", sn->key);
+ if (!_add_site(seg, sn->key, sn->child))
+ return_0;
+ }
+ return 1;
+}
+
+/* Export replicator segment */
+static int _replicator_text_export(const struct lv_segment *seg,
+ struct formatter *f)
+{
+ struct replicator_site *rsite;
+
+ if (!seg->rlog_lv)
+ return_0;
+
+ outf(f, "replicator_log = \"%s\"", seg->rlog_lv->name);
+ outf(f, "replicator_log_type = \"%s\"", seg->rlog_type);
+ outf(f, "highest_device_index = %" PRIu64, seg->rdevice_index_highest);
+ outf(f, "highest_site_index = %d", seg->rsite_index_highest);
+
+ if (seg->region_size)
+ outsize(f, (uint64_t)seg->region_size,
+ "sync_log_size = %" PRIu32, seg->region_size);
+
+ if (!dm_list_empty(&seg->lv->rsites))
+ outnl(f);
+
+ dm_list_iterate_items(rsite, &seg->lv->rsites) {
+ outf(f, "%s {", rsite->name);
+ out_inc_indent(f);
+
+ outf(f, "state = \"%s\"", _state_txt[rsite->state]);
+ outf(f, "site_index = %d", rsite->site_index);
+
+ /* Only non-default parameters are written */
+ if (rsite->op_mode != DM_REPLICATOR_SYNC)
+ outf(f, "operation_mode = \"%s\"",
+ _op_mode_txt[rsite->op_mode]);
+ if (rsite->fall_behind_timeout)
+ outfc(f, "# seconds", "fall_behind_timeout = %u",
+ rsite->fall_behind_timeout);
+ if (rsite->fall_behind_ios)
+ outfc(f, "# io operations", "fall_behind_ios = %u",
+ rsite->fall_behind_ios);
+ if (rsite->fall_behind_data)
+ outsize(f, rsite->fall_behind_data, "fall_behind_data = %" PRIu64,
+ rsite->fall_behind_data);
+ if (rsite->state != REPLICATOR_STATE_ACTIVE && rsite->vg_name)
+ outf(f, "volume_group = \"%s\"", rsite->vg_name);
+
+ out_dec_indent(f);
+ outf(f, "}");
+ }
+
+ return 1;
+}
+
+#ifdef DEVMAPPER_SUPPORT
+static int _replicator_add_target_line(struct dev_manager *dm,
+ struct dm_pool *mem,
+ struct cmd_context *cmd,
+ void **target_state,
+ struct lv_segment *seg,
+ struct dm_tree_node *node,
+ uint64_t len,
+ uint32_t *pvmove_mirror_count)
+{
+ const char *rlog_dlid;
+ struct replicator_site *rsite;
+
+ if (!seg->rlog_lv)
+ return_0;
+
+ if (!(rlog_dlid = build_dm_uuid(mem, seg->rlog_lv->lvid.s, NULL)))
+ return_0;
+
+ dm_list_iterate_items(rsite, &seg->lv->rsites) {
+ if (!dm_tree_node_add_replicator_target(node,
+ seg->rlog_lv->size,
+ rlog_dlid,
+ seg->rlog_type,
+ rsite->site_index,
+ rsite->op_mode,
+ rsite->fall_behind_timeout,
+ rsite->fall_behind_data,
+ rsite->fall_behind_ios)) {
+ if (rsite->site_index == 0) {
+ log_error("Failed to add replicator log '%s' "
+ "to replicator '%s'.",
+ rlog_dlid, seg->lv->name);
+ return 0;
+ }
+ // FIXME:
+ }
+ }
+
+ return 1;
+}
+
+/* FIXME: write something useful for replicator here */
+static int _replicator_target_percent(void **target_state,
+ percent_range_t *percent_range,
+ struct dm_pool *mem,
+ struct cmd_context *cmd,
+ struct lv_segment *seg,
+ char *params, uint64_t *total_numerator,
+ uint64_t *total_denominator)
+{
+ return 1;
+}
+
+/* Check for module presence */
+static int _replicator_target_present(struct cmd_context *cmd,
+ const struct lv_segment *seg __attribute((unused)),
+ unsigned *attributes __attribute((unused)))
+{
+ static int _checked = 0;
+ static int _present = 0;
+
+ if (!_checked) {
+ _present = target_present(cmd, REPLICATOR_MODULE, 1);
+ _checked = 1;
+ }
+
+ return _present;
+}
+
+#endif
+
+static int _replicator_modules_needed(struct dm_pool *mem,
+ const struct lv_segment *seg __attribute((unused)),
+ struct dm_list *modules)
+{
+ if (!str_list_add(mem, modules, REPLICATOR_MODULE))
+ return_0;
+
+ if (!str_list_add(mem, modules, REPLICATOR_DEV_MODULE))
+ return_0;
+
+ return 1;
+}
+
+static void _replicator_destroy(const struct segment_type *segtype)
+{
+ dm_free((void *)segtype);
+}
+
+static struct segtype_handler _replicator_ops = {
+ .name = _replicator_name,
+ .display = _replicator_display,
+ .text_import = _replicator_text_import,
+ .text_export = _replicator_text_export,
+#ifdef DEVMAPPER_SUPPORT
+ .add_target_line = _replicator_add_target_line,
+ .target_percent = _replicator_target_percent,
+ .target_present = _replicator_target_present,
+#endif
+ .modules_needed = _replicator_modules_needed,
+ .destroy = _replicator_destroy,
+};
+
+/*
+ * Replicator-dev target
+ */
+static void _replicator_dev_display(const struct lv_segment *seg)
+{
+ //const char *size;
+ //uint32_t s;
+ // FIXME: debug test code for now
+ log_print(" Replicator\t\t%u", seg->area_count);
+ log_print(" Mirror size\t\t%u", seg->area_len);
+ if (seg->log_lv)
+ log_print(" Replicator log volume\t%s", seg->rlog_lv->name);
+
+}
+
+static int _add_device(struct lv_segment *seg,
+ const char *site_name,
+ const struct config_node *sn,
+ uint64_t devidx)
+{
+ struct dm_pool *mem = seg->lv->vg->vgmem;
+ struct logical_volume *lv = NULL;
+ struct logical_volume *slog_lv = NULL;
+ struct replicator_site *rsite = _get_site(seg->replicator, site_name);
+ struct replicator_device *rdev;
+ const char *dev_str = NULL;
+ const char *slog_str = NULL;
+ const struct config_node *cn;
+
+ dm_list_iterate_items(rdev, &rsite->rdevices)
+ if (rdev->replicator_dev == seg)
+ return SEG_LOG_ERROR("Duplicate site found in");
+
+ if ((cn = find_config_node(sn, "sync_log"))) {
+ if (!cn->v || !cn->v->v.str)
+ return SEG_LOG_ERROR("Sync log must be a string in");
+ slog_str = cn->v->v.str;
+ }
+
+ if (!(cn = find_config_node(sn, "logical_volume")) ||
+ !cn->v || !cn->v->v.str)
+ return SEG_LOG_ERROR("Logical volume must be a string in");
+
+ dev_str = cn->v->v.str;
+
+ if (!seg->lv->rdevice) {
+ if (slog_str)
+ return SEG_LOG_ERROR("Sync log %s defined for local "
+ "device in", slog_str);
+
+ /* Check for device in current VG */
+ if (!(lv = find_lv(seg->lv->vg, dev_str)))
+ return SEG_LOG_ERROR("Logical volume %s not found in",
+ dev_str);
+ } else {
+ if (!slog_str)
+ return SEG_LOG_ERROR("Sync log is missing for remote "
+ "device in");
+ /* Check for slog device in current VG */
+ if (!(slog_lv = find_lv(seg->lv->vg, slog_str)))
+ return SEG_LOG_ERROR("Sync log %s not found in",
+ slog_str);
+ }
+
+ if (!(rdev = dm_pool_zalloc(mem, sizeof(*rdev))))
+ return_0;
+
+ if (!(rdev->name = dm_pool_strdup(mem, dev_str)))
+ return_0;
+
+ rdev->replicator_dev = seg;
+ rdev->rsite = rsite;
+ rdev->device_index = devidx;
+
+ if (!seg->lv->rdevice) {
+ if (!replicator_dev_add_rimage(rdev, lv))
+ return SEG_LOG_ERROR("LV inconsistency found in");
+ seg->lv->rdevice = rdev;
+ } else {
+ if (!slog_str ||
+ !(rdev->slog_name = dm_pool_strdup(mem, slog_str)))
+ return_0;
+
+ if (!replicator_dev_add_slog(rdev, slog_lv))
+ return SEG_LOG_ERROR("Sync log inconsistency found in");
+ }
+
+ dm_list_add(&rsite->rdevices, &rdev->list);// linked site list
+
+ return 1;
+}
+
+/* Import replicator segment */
+static int _replicator_dev_text_import(struct lv_segment *seg,
+ const struct config_node *sn,
+ struct dm_hash_table *pv_hash __attribute((unused)))
+{
+ const struct config_node *cn;
+ struct logical_volume *replicator;
+ uint64_t devidx;
+
+ if (!(cn = find_config_node(sn, "replicator")))
+ return SEG_LOG_ERROR("Replicator is missing for");
+
+ if (!cn->v || !cn->v->v.str)
+ return SEG_LOG_ERROR("Replicator must be a string for");
+
+ if (!(replicator = find_lv(seg->lv->vg, cn->v->v.str)))
+ return SEG_LOG_ERROR("Unknown replicator %s for", cn->v->v.str);
+
+ if (!replicator_add_replicator_dev(replicator, seg))
+ return_0;
+
+ log_very_verbose("replicator=%s", replicator->name);
+
+ /* Mandatory */
+ if (!find_config_node(sn, "device_index") ||
+ !get_config_uint64(sn, "device_index", &devidx))
+ return SEG_LOG_ERROR("Could not read 'device_index' for");
+
+ /* Read devices from sites */
+ for (; sn; sn = sn->sib)
+ if (!(sn->v) && !_add_device(seg, sn->key, sn->child, devidx))
+ return_0;
+
+ if (!seg->lv->rdevice)
+ return SEG_LOG_ERROR("Replicator device without site in");
+
+ seg->rlog_lv = NULL;
+ seg->lv->status |= REPLICATOR;
+
+ return 1;
+}
+
+/* Export replicator-dev segment */
+static int _replicator_dev_text_export(const struct lv_segment *seg,
+ struct formatter *f)
+{
+ struct replicator_site *rsite;
+ struct replicator_device *rdev;
+
+ if (!seg->replicator || !seg->lv->rdevice)
+ return_0;
+
+ outf(f, "replicator = \"%s\"", seg->replicator->name);
+ outf(f, "device_index = %" PRId64, seg->lv->rdevice->device_index);
+
+ outnl(f);
+
+ dm_list_iterate_items(rsite, &seg->replicator->rsites) {
+ dm_list_iterate_items(rdev, &rsite->rdevices) {
+ if (rdev->replicator_dev != seg)
+ continue;
+
+ outf(f, "%s {", rdev->rsite->name);
+
+ out_inc_indent(f);
+
+ outf(f, "logical_volume = \"%s\"",
+ rdev->name ? rdev->name : rdev->lv->name);
+
+ if (rdev->slog)
+ outf(f, "sync_log = \"%s\"", rdev->slog->name);
+ else if (rdev->slog_name)
+ outf(f, "sync_log = \"%s\"", rdev->slog_name);
+
+ out_dec_indent(f);
+
+ outf(f, "}");
+ }
+ }
+
+ return 1;
+}
+
+#ifdef DEVMAPPER_SUPPORT
+/*
+ * Add target for passive site matching the device index
+ */
+static int _replicator_dev_add_target_line(struct dev_manager *dm,
+ struct dm_pool *mem,
+ struct cmd_context *cmd,
+ void **target_state,
+ struct lv_segment *seg,
+ struct dm_tree_node *node,
+ uint64_t len,
+ uint32_t *pvmove_mirror_count)
+{
+ const char *replicator_dlid, *rdev_dlid, *slog_dlid;
+ struct replicator_device *rdev, *rdev_search;
+ struct replicator_site *rsite;
+ uint32_t slog_size;
+ uint32_t slog_flags;
+
+ if (!lv_is_active_replicator_dev(seg->lv)) {
+ /* Create passive linear mapping */
+ log_very_verbose("Inactive replicator %s using %s.",
+ seg->lv->name, seg->lv->rdevice->lv->name);
+ if (!dm_tree_node_add_linear_target(node, seg->lv->size))
+ return_0;
+ if (!(rdev_dlid = build_dm_uuid(mem, seg->lv->rdevice->lv->lvid.s, NULL)))
+ return_0;
+ return dm_tree_node_add_target_area(node, NULL, rdev_dlid, 0);
+ } else if (seg->lv->rdevice->rsite->site_index) {
+ log_error("Active site with site_index != 0 (%s, %d)",
+ seg->lv->rdevice->rsite->name,
+ seg->lv->rdevice->rsite->site_index);
+ return 0; /* Replicator without any active site */
+ }
+
+ /*
+ * At this point all devices that have some connection with replicator
+ * must be present in dm_tree
+ */
+ if (!seg_is_replicator_dev(seg) ||
+ !(replicator_dlid = build_dm_uuid(mem, seg->replicator->lvid.s, NULL)))
+ return_0;
+
+ /* Select remote devices with the same device index */
+ dm_list_iterate_items(rsite, &seg->replicator->rsites) {
+ if (rsite->site_index == 0) {
+ /* Local slink0 device */
+ rdev = seg->lv->rdevice;
+ } else {
+ rdev = NULL;
+ dm_list_iterate_items(rdev_search, &rsite->rdevices) {
+ if (rdev_search->replicator_dev == seg) {
+ rdev = rdev_search;
+ break;
+ }
+ }
+
+ if (!rdev) {
+ log_error(INTERNAL_ERROR "rdev list not found.");
+ return 0;
+ }
+ }
+
+ if (!rdev->lv ||
+ !(rdev_dlid = build_dm_uuid(mem, rdev->lv->lvid.s, NULL)))
+ return_0;
+
+ slog_dlid = NULL;
+
+ /* Using either disk or core (in memory) log */
+ if (rdev->slog) {
+ slog_flags = DM_NOSYNC;
+ slog_size = (uint32_t) rdev->slog->size;
+ if (!(slog_dlid = build_dm_uuid(mem, rdev->slog->lvid.s, NULL)))
+ return_0;
+ } else if (rdev->slog_name &&
+ sscanf(rdev->slog_name, "%" PRIu32, &slog_size) == 1) {
+ slog_flags = DM_CORELOG | DM_FORCESYNC;
+ if (slog_size == 0) {
+ log_error("Failed to use empty corelog size "
+ "in replicator '%s'.",
+ rsite->replicator->name);
+ return 0;
+ }
+ } else {
+ slog_flags = DM_CORELOG | DM_FORCESYNC;
+ slog_size = 0; /* NOLOG */
+ }
+
+ if (!dm_tree_node_add_replicator_dev_target(node,
+ seg->lv->size,
+ replicator_dlid,
+ seg->lv->rdevice->device_index,
+ rdev_dlid,
+ rsite->site_index,
+ slog_dlid,
+ slog_flags,
+ slog_size)) {
+ return_0;
+ /* FIXME: handle 'state = dropped' in future */
+ }
+ }
+
+ return 1;
+}
+
+/* FIXME: write something useful for replicator-dev here */
+static int _replicator_dev_target_percent(void **target_state,
+ percent_range_t *percent_range,
+ struct dm_pool *mem,
+ struct cmd_context *cmd,
+ struct lv_segment *seg,
+ char *params,
+ uint64_t *total_numerator,
+ uint64_t *total_denominator)
+{
+ return 1;
+}
+
+/* Check for module presence */
+static int _replicator_dev_target_present(struct cmd_context *cmd,
+ const struct lv_segment *seg __attribute((unused)),
+ unsigned *attributes __attribute((unused)))
+{
+ static int _checked = 0;
+ static int _present = 0;
+
+ if (!_checked) {
+ _present = target_present(cmd, REPLICATOR_DEV_MODULE, 1);
+ _checked = 1;
+ }
+
+ return _present;
+}
+
+#endif
+
+static struct segtype_handler _replicator_dev_ops = {
+ .name = _replicator_name,
+ .display = _replicator_dev_display,
+ .text_import = _replicator_dev_text_import,
+ .text_export = _replicator_dev_text_export,
+#ifdef DEVMAPPER_SUPPORT
+ .add_target_line = _replicator_dev_add_target_line,
+ .target_percent = _replicator_dev_target_percent,
+ .target_present = _replicator_dev_target_present,
+#endif
+ .modules_needed = _replicator_modules_needed,
+ .destroy = _replicator_destroy,
+};
+
+#ifdef REPLICATOR_INTERNAL
+int init_replicator_segtype(struct segtype_library *seglib)
+#else /* Shared */
+int init_multiple_segtype(struct segtype_library *seglib);
+int init_multiple_segtype(struct segtype_library *seglib)
+#endif
+{
+ struct segment_type *segtype;
+
+ if (!(segtype = dm_malloc(sizeof(*segtype))))
+ return_0;
+
+ segtype->ops = &_replicator_ops;
+ segtype->name = REPLICATOR_MODULE;
+ segtype->private = NULL;
+ segtype->flags = SEG_REPLICATOR;
+
+ if (!lvm_register_segtype(seglib, segtype))
+ return_0;
+
+ log_very_verbose("Initialised segtype: " REPLICATOR_MODULE);
+
+ if (!(segtype = dm_malloc(sizeof(*segtype))))
+ return_0;
+
+ segtype->ops = &_replicator_dev_ops;
+ segtype->name = REPLICATOR_DEV_MODULE;
+ segtype->private = NULL;
+ segtype->flags = SEG_REPLICATOR_DEV;
+
+ if (!lvm_register_segtype(seglib, segtype))
+ return_0;
+
+ log_very_verbose("Initialised segtype: " REPLICATOR_DEV_MODULE);
+
+ return 1;
+}
git://sourceware.org / lvm2.git / commitdiff