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authorBarak Sason Rofman <sason922@gmail.com>2020-04-12 18:19:41 +0300
committerSusant Palai <spalai@redhat.com>2020-04-17 04:59:18 +0000
commit0e94dbb81154edcc7d1182527663a7340fbeab01 (patch)
treebc8959ca6c0efe2a253fcee00f390ae0dcf132b9
parent39f4a03cbaa7b3b93a3750258607cbd91b9d4b9d (diff)
dht - Remove "tier" code (part 1)v9dev
This patch is removing some of the "tier" code in dht xlator, as it is no longer being used. Not all of the not-needed code is removed at once, so reviewing is easier. Follow up patches removing additional unused code will follow. This is based in the work done in https://review.gluster.org/#/c/glusterfs/+/23935/ Change-Id: I3cb6a0c5d8f14afcd87cf021ef8f74b91c0f908a updates: #1097 Signed-off-by: Barak Sason Rofman <bsaonro@redhat.com>
-rw-r--r--xlators/cluster/dht/src/dht-common.c8
-rw-r--r--xlators/cluster/dht/src/dht-common.h18
-rw-r--r--xlators/cluster/dht/src/dht-rebalance.c469
3 files changed, 19 insertions, 476 deletions
diff --git a/xlators/cluster/dht/src/dht-common.c b/xlators/cluster/dht/src/dht-common.c
index 22ef820..e3aed57 100644
--- a/xlators/cluster/dht/src/dht-common.c
+++ b/xlators/cluster/dht/src/dht-common.c
@@ -10999,21 +10999,13 @@ dht_notify(xlator_t *this, int event, void *data, ...)
if (defrag->is_exiting)
goto unlock;
if ((cmd == GF_DEFRAG_CMD_STATUS) ||
- (cmd == GF_DEFRAG_CMD_STATUS_TIER) ||
(cmd == GF_DEFRAG_CMD_DETACH_STATUS))
gf_defrag_status_get(conf, output);
- else if (cmd == GF_DEFRAG_CMD_START_DETACH_TIER)
- gf_defrag_start_detach_tier(defrag);
else if (cmd == GF_DEFRAG_CMD_DETACH_START)
defrag->cmd = GF_DEFRAG_CMD_DETACH_START;
else if (cmd == GF_DEFRAG_CMD_STOP ||
- cmd == GF_DEFRAG_CMD_STOP_DETACH_TIER ||
cmd == GF_DEFRAG_CMD_DETACH_STOP)
gf_defrag_stop(conf, GF_DEFRAG_STATUS_STOPPED, output);
- else if (cmd == GF_DEFRAG_CMD_PAUSE_TIER)
- ret = gf_defrag_pause_tier(this, defrag);
- else if (cmd == GF_DEFRAG_CMD_RESUME_TIER)
- ret = gf_defrag_resume_tier(this, defrag);
}
unlock:
UNLOCK(&defrag->lock);
diff --git a/xlators/cluster/dht/src/dht-common.h b/xlators/cluster/dht/src/dht-common.h
index 871b7ae..8a49eef 100644
--- a/xlators/cluster/dht/src/dht-common.h
+++ b/xlators/cluster/dht/src/dht-common.h
@@ -1238,24 +1238,6 @@ dht_common_xattrop_cbk(call_frame_t *frame, void *cookie, xlator_t *this,
int
gf_defrag_status_get(dht_conf_t *conf, dict_t *dict);
-void
-gf_defrag_set_pause_state(gf_tier_conf_t *tier_conf, tier_pause_state_t state);
-
-tier_pause_state_t
-gf_defrag_get_pause_state(gf_tier_conf_t *tier_conf);
-
-int
-gf_defrag_pause_tier(xlator_t *this, gf_defrag_info_t *defrag);
-
-tier_pause_state_t
-gf_defrag_check_pause_tier(gf_tier_conf_t *defrag);
-
-int
-gf_defrag_resume_tier(xlator_t *this, gf_defrag_info_t *defrag);
-
-int
-gf_defrag_start_detach_tier(gf_defrag_info_t *defrag);
-
int
gf_defrag_stop(dht_conf_t *conf, gf_defrag_status_t status, dict_t *output);
diff --git a/xlators/cluster/dht/src/dht-rebalance.c b/xlators/cluster/dht/src/dht-rebalance.c
index abe2afa..0bf0d86 100644
--- a/xlators/cluster/dht/src/dht-rebalance.c
+++ b/xlators/cluster/dht/src/dht-rebalance.c
@@ -84,26 +84,6 @@ dht_set_global_defrag_error(gf_defrag_info_t *defrag, int ret)
return;
}
-static gf_boolean_t
-dht_is_tier_command(int cmd)
-{
- gf_boolean_t is_tier = _gf_false;
-
- switch (cmd) {
- case GF_DEFRAG_CMD_START_TIER:
- case GF_DEFRAG_CMD_STATUS_TIER:
- case GF_DEFRAG_CMD_START_DETACH_TIER:
- case GF_DEFRAG_CMD_STOP_DETACH_TIER:
- case GF_DEFRAG_CMD_PAUSE_TIER:
- case GF_DEFRAG_CMD_RESUME_TIER:
- is_tier = _gf_true;
- break;
- default:
- break;
- }
- return is_tier;
-}
-
static int
dht_send_rebalance_event(xlator_t *this, int cmd, gf_defrag_status_t status)
{
@@ -112,8 +92,6 @@ dht_send_rebalance_event(xlator_t *this, int cmd, gf_defrag_status_t status)
char *tmpstr = NULL;
char *ptr = NULL;
char *suffix = "-dht";
- dht_conf_t *conf = NULL;
- gf_defrag_info_t *defrag = NULL;
int len = 0;
eventtypes_t event = EVENT_LAST;
@@ -132,21 +110,14 @@ dht_send_rebalance_event(xlator_t *this, int cmd, gf_defrag_status_t status)
break;
}
- if (dht_is_tier_command(cmd)) {
- /* We should have the tier volume name*/
- conf = this->private;
- defrag = conf->defrag;
- volname = defrag->tier_conf.volname;
- } else {
- /* DHT volume */
- len = strlen(this->name) - strlen(suffix);
- tmpstr = gf_strdup(this->name);
- if (tmpstr) {
- ptr = tmpstr + len;
- if (!strcmp(ptr, suffix)) {
- tmpstr[len] = '\0';
- volname = tmpstr;
- }
+ /* DHT volume */
+ len = strlen(this->name) - strlen(suffix);
+ tmpstr = gf_strdup(this->name);
+ if (tmpstr) {
+ ptr = tmpstr + len;
+ if (!strcmp(ptr, suffix)) {
+ tmpstr[len] = '\0';
+ volname = tmpstr;
}
}
@@ -1167,13 +1138,6 @@ __dht_rebalance_migrate_data(xlator_t *this, gf_defrag_info_t *defrag,
}
}
- if ((defrag && defrag->cmd == GF_DEFRAG_CMD_START_TIER) &&
- (gf_defrag_get_pause_state(&defrag->tier_conf) != TIER_RUNNING)) {
- gf_msg("tier", GF_LOG_INFO, 0, DHT_MSG_TIER_PAUSED,
- "Migrate file paused");
- ret = -1;
- }
-
if (ret < 0) {
break;
}
@@ -4028,208 +3992,6 @@ out:
return ret;
}
-/******************************************************************************
- * Tier background Fix layout functions
- ******************************************************************************/
-/* This is the background tier fixlayout thread */
-void *
-gf_tier_do_fix_layout(void *args)
-{
- gf_tier_fix_layout_arg_t *tier_fix_layout_arg = args;
- int ret = -1;
- xlator_t *this = NULL;
- dht_conf_t *conf = NULL;
- gf_defrag_info_t *defrag = NULL;
- dict_t *dict = NULL;
- loc_t loc = {
- 0,
- };
- struct iatt iatt = {
- 0,
- };
- struct iatt parent = {
- 0,
- };
-
- GF_VALIDATE_OR_GOTO("tier", tier_fix_layout_arg, out);
- GF_VALIDATE_OR_GOTO("tier", tier_fix_layout_arg->this, out);
- this = tier_fix_layout_arg->this;
-
- conf = this->private;
- GF_VALIDATE_OR_GOTO(this->name, conf, out);
-
- defrag = conf->defrag;
- GF_VALIDATE_OR_GOTO(this->name, defrag, out);
- GF_VALIDATE_OR_GOTO(this->name, defrag->root_inode, out);
-
- GF_VALIDATE_OR_GOTO(this->name, tier_fix_layout_arg->fix_layout, out);
-
- /* Get Root loc_t */
- dht_build_root_loc(defrag->root_inode, &loc);
- ret = syncop_lookup(this, &loc, &iatt, &parent, NULL, NULL);
- if (ret) {
- gf_msg(this->name, GF_LOG_ERROR, -ret, DHT_MSG_REBALANCE_START_FAILED,
- "Lookup on root failed.");
- ret = -1;
- goto out;
- }
-
- /* Start the crawl */
- gf_msg(this->name, GF_LOG_INFO, 0, DHT_MSG_LOG_TIER_STATUS,
- "Tiering Fixlayout started");
-
- ret = gf_defrag_fix_layout(this, defrag, &loc,
- tier_fix_layout_arg->fix_layout, NULL);
- if (ret && ret != 2) {
- gf_msg(this->name, GF_LOG_ERROR, 0, DHT_MSG_REBALANCE_FAILED,
- "Tiering fixlayout failed.");
- ret = -1;
- goto out;
- }
-
- if (ret != 2 &&
- gf_defrag_settle_hash(this, defrag, &loc,
- tier_fix_layout_arg->fix_layout) != 0) {
- defrag->total_failures++;
- ret = -1;
- goto out;
- }
-
- dict = dict_new();
- if (!dict) {
- ret = -1;
- goto out;
- }
-
- ret = dict_set_str(dict, GF_XATTR_TIER_LAYOUT_FIXED_KEY, "yes");
- if (ret) {
- gf_msg(this->name, GF_LOG_ERROR, 0, DHT_MSG_REBALANCE_FAILED,
- "Failed to set dictionary value: key = %s",
- GF_XATTR_TIER_LAYOUT_FIXED_KEY);
- ret = -1;
- goto out;
- }
-
- /* Marking the completion of tiering fix layout via a xattr on root */
- ret = syncop_setxattr(this, &loc, dict, 0, NULL, NULL);
- if (ret) {
- gf_log(this->name, GF_LOG_ERROR,
- "Failed to set tiering fix "
- "layout completed xattr on %s",
- loc.path);
- ret = -1;
- goto out;
- }
-
- ret = 0;
-out:
- if (ret && defrag)
- defrag->total_failures++;
-
- if (dict)
- dict_unref(dict);
-
- return NULL;
-}
-
-int
-gf_tier_start_fix_layout(xlator_t *this, loc_t *loc, gf_defrag_info_t *defrag,
- dict_t *fix_layout)
-{
- int ret = -1;
- dict_t *tier_dict = NULL;
- gf_tier_fix_layout_arg_t *tier_fix_layout_arg = NULL;
-
- tier_dict = dict_new();
- if (!tier_dict) {
- gf_log("tier", GF_LOG_ERROR,
- "Tier fix layout failed :"
- "Creation of tier_dict failed");
- ret = -1;
- goto out;
- }
-
- /* Check if layout is fixed already */
- ret = syncop_getxattr(this, loc, &tier_dict, GF_XATTR_TIER_LAYOUT_FIXED_KEY,
- NULL, NULL);
- if (ret != 0) {
- tier_fix_layout_arg = &defrag->tier_conf.tier_fix_layout_arg;
-
- /*Fill crawl arguments */
- tier_fix_layout_arg->this = this;
- tier_fix_layout_arg->fix_layout = fix_layout;
-
- /* Spawn the fix layout thread so that its done in the
- * background */
- ret = gf_thread_create(&tier_fix_layout_arg->thread_id, NULL,
- gf_tier_do_fix_layout, tier_fix_layout_arg,
- "tierfixl");
- if (ret) {
- gf_log("tier", GF_LOG_ERROR,
- "Thread creation failed. "
- "Background fix layout for tiering will not "
- "work.");
- defrag->total_failures++;
- goto out;
- }
- }
- ret = 0;
-out:
- if (tier_dict)
- dict_unref(tier_dict);
-
- return ret;
-}
-
-void
-gf_tier_clear_fix_layout(xlator_t *this, loc_t *loc, gf_defrag_info_t *defrag)
-{
- int ret = -1;
- dict_t *dict = NULL;
-
- GF_VALIDATE_OR_GOTO("tier", this, out);
- GF_VALIDATE_OR_GOTO(this->name, loc, out);
- GF_VALIDATE_OR_GOTO(this->name, defrag, out);
-
- /* Check if background fixlayout is completed. This is not
- * multi-process safe i.e there is a possibility that by the time
- * we move to remove the xattr there it might have been cleared by some
- * other detach process from other node. We ignore the error if such
- * a thing happens */
- ret = syncop_getxattr(this, loc, &dict, GF_XATTR_TIER_LAYOUT_FIXED_KEY,
- NULL, NULL);
- if (ret) {
- /* Background fixlayout not complete - nothing to clear*/
- gf_msg(this->name, GF_LOG_WARNING, -ret, DHT_MSG_LOG_TIER_STATUS,
- "Unable to retrieve fixlayout xattr."
- "Assume background fix layout not complete");
- goto out;
- }
-
- ret = syncop_removexattr(this, loc, GF_XATTR_TIER_LAYOUT_FIXED_KEY, NULL,
- NULL);
- if (ret) {
- gf_msg(this->name, GF_LOG_WARNING, -ret, DHT_MSG_LOG_TIER_STATUS,
- "Failed removing tier fix layout "
- "xattr from %s",
- loc->path);
- goto out;
- }
- ret = 0;
-out:
- if (dict)
- dict_unref(dict);
-}
-
-void
-gf_tier_wait_fix_lookup(gf_defrag_info_t *defrag)
-{
- if (defrag->tier_conf.tier_fix_layout_arg.thread_id) {
- pthread_join(defrag->tier_conf.tier_fix_layout_arg.thread_id, NULL);
- }
-}
-/******************Tier background Fix layout functions END********************/
-
int
dht_init_local_subvols_and_nodeuuids(xlator_t *this, dht_conf_t *conf,
loc_t *loc)
@@ -4568,7 +4330,6 @@ gf_defrag_start_crawl(void *data)
dict_t *migrate_data = NULL;
dict_t *status = NULL;
glusterfs_ctx_t *ctx = NULL;
- dht_methods_t *methods = NULL;
call_frame_t *statfs_frame = NULL;
xlator_t *old_THIS = NULL;
int ret = -1;
@@ -4584,7 +4345,6 @@ gf_defrag_start_crawl(void *data)
int thread_index = 0;
pthread_t *tid = NULL;
pthread_t filecnt_thread;
- gf_boolean_t is_tier_detach = _gf_false;
gf_boolean_t fc_thread_started = _gf_false;
this = data;
@@ -4737,43 +4497,18 @@ gf_defrag_start_crawl(void *data)
}
}
- if (defrag->cmd == GF_DEFRAG_CMD_START_TIER) {
- /* Fix layout for attach tier */
- ret = gf_tier_start_fix_layout(this, &loc, defrag, fix_layout);
- if (ret) {
- goto out;
- }
-
- methods = &(conf->methods);
-
- /* Calling tier_start of tier.c */
- methods->migration_other(this, defrag);
- if (defrag->cmd == GF_DEFRAG_CMD_START_DETACH_TIER ||
- defrag->cmd == GF_DEFRAG_CMD_DETACH_START) {
- ret = dict_set_str(migrate_data, GF_XATTR_FILE_MIGRATE_KEY,
- "force");
- if (ret)
- goto out;
- }
- } else {
- ret = gf_defrag_fix_layout(this, defrag, &loc, fix_layout,
- migrate_data);
- if (ret && ret != 2) {
- defrag->total_failures++;
- ret = -1;
- goto out;
- }
-
- if (ret != 2 &&
- gf_defrag_settle_hash(this, defrag, &loc, fix_layout) != 0) {
- defrag->total_failures++;
- ret = -1;
- goto out;
- }
+ ret = gf_defrag_fix_layout(this, defrag, &loc, fix_layout, migrate_data);
+ if (ret && ret != 2) {
+ defrag->total_failures++;
+ ret = -1;
+ goto out;
+ }
- if (defrag->cmd == GF_DEFRAG_CMD_START_DETACH_TIER ||
- defrag->cmd == GF_DEFRAG_CMD_DETACH_START)
- is_tier_detach = _gf_true;
+ if (ret != 2 &&
+ gf_defrag_settle_hash(this, defrag, &loc, fix_layout) != 0) {
+ defrag->total_failures++;
+ ret = -1;
+ goto out;
}
gf_log("DHT", GF_LOG_INFO, "crawling file-system completed");
@@ -4787,19 +4522,6 @@ out:
defrag->defrag_status = GF_DEFRAG_STATUS_FAILED;
}
- if (defrag->cmd == GF_DEFRAG_CMD_START_TIER) {
- /* Wait for the tier fixlayout to
- * complete if its was started.*/
- gf_tier_wait_fix_lookup(defrag);
- }
-
- if (is_tier_detach && ret == 0) {
- /* If it was a detach remove the tier fix-layout
- * xattr on root. Ignoring the failure, as nothing has to be
- * done, logging is done in gf_tier_clear_fix_layout */
- gf_tier_clear_fix_layout(this, &loc, defrag);
- }
-
gf_defrag_parallel_migration_cleanup(defrag, tid, thread_index);
if ((defrag->defrag_status != GF_DEFRAG_STATUS_STOPPED) &&
@@ -5080,159 +4802,6 @@ out:
return 0;
}
-void
-gf_defrag_set_pause_state(gf_tier_conf_t *tier_conf, tier_pause_state_t state)
-{
- pthread_mutex_lock(&tier_conf->pause_mutex);
- tier_conf->pause_state = state;
- pthread_mutex_unlock(&tier_conf->pause_mutex);
-}
-
-tier_pause_state_t
-gf_defrag_get_pause_state(gf_tier_conf_t *tier_conf)
-{
- int state;
-
- pthread_mutex_lock(&tier_conf->pause_mutex);
- state = tier_conf->pause_state;
- pthread_mutex_unlock(&tier_conf->pause_mutex);
-
- return state;
-}
-
-tier_pause_state_t
-gf_defrag_check_pause_tier(gf_tier_conf_t *tier_conf)
-{
- int woke = 0;
- int state = -1;
-
- pthread_mutex_lock(&tier_conf->pause_mutex);
-
- if (tier_conf->pause_state == TIER_RUNNING)
- goto out;
-
- if (tier_conf->pause_state == TIER_PAUSED)
- goto out;
-
- if (tier_conf->promote_in_progress || tier_conf->demote_in_progress)
- goto out;
-
- tier_conf->pause_state = TIER_PAUSED;
-
- if (tier_conf->pause_synctask) {
- synctask_wake(tier_conf->pause_synctask);
- tier_conf->pause_synctask = 0;
- woke = 1;
- }
-
- gf_msg("tier", GF_LOG_DEBUG, 0, DHT_MSG_TIER_PAUSED, "woken %d", woke);
-
- gf_event(EVENT_TIER_PAUSE, "vol=%s", tier_conf->volname);
-out:
- state = tier_conf->pause_state;
-
- pthread_mutex_unlock(&tier_conf->pause_mutex);
-
- return state;
-}
-
-void
-gf_defrag_pause_tier_timeout(void *data)
-{
- xlator_t *this = NULL;
- dht_conf_t *conf = NULL;
- gf_defrag_info_t *defrag = NULL;
-
- this = (xlator_t *)data;
- GF_VALIDATE_OR_GOTO("tier", this, out);
-
- conf = this->private;
- GF_VALIDATE_OR_GOTO(this->name, conf, out);
-
- defrag = conf->defrag;
- GF_VALIDATE_OR_GOTO(this->name, defrag, out);
-
- gf_msg(this->name, GF_LOG_DEBUG, 0, DHT_MSG_TIER_PAUSED,
- "Request pause timer timeout");
-
- gf_defrag_check_pause_tier(&defrag->tier_conf);
-
-out:
- return;
-}
-
-int
-gf_defrag_pause_tier(xlator_t *this, gf_defrag_info_t *defrag)
-{
- int ret = 0;
- struct timespec delta = {
- 0,
- };
- int delay = 2;
-
- if (defrag->defrag_status != GF_DEFRAG_STATUS_STARTED)
- goto out;
-
- /*
- * Set flag requesting to pause tiering. Wait 'delay' seconds for
- * tiering to actually stop as indicated by the pause state
- * before returning success or failure.
- */
- gf_defrag_set_pause_state(&defrag->tier_conf, TIER_REQUEST_PAUSE);
-
- /*
- * If migration is not underway, can pause immediately.
- */
- gf_defrag_check_pause_tier(&defrag->tier_conf);
- if (gf_defrag_get_pause_state(&defrag->tier_conf) == TIER_PAUSED)
- goto out;
-
- gf_msg(this->name, GF_LOG_DEBUG, 0, DHT_MSG_TIER_PAUSED,
- "Request pause tier");
-
- defrag->tier_conf.pause_synctask = synctask_get();
- delta.tv_sec = delay;
- delta.tv_nsec = 0;
- defrag->tier_conf.pause_timer = gf_timer_call_after(
- this->ctx, delta, gf_defrag_pause_tier_timeout, this);
-
- synctask_yield(defrag->tier_conf.pause_synctask);
-
- if (gf_defrag_get_pause_state(&defrag->tier_conf) == TIER_PAUSED)
- goto out;
-
- gf_defrag_set_pause_state(&defrag->tier_conf, TIER_RUNNING);
-
- ret = -1;
-out:
-
- gf_msg(this->name, GF_LOG_DEBUG, 0, DHT_MSG_TIER_PAUSED,
- "Pause tiering ret=%d", ret);
-
- return ret;
-}
-
-int
-gf_defrag_resume_tier(xlator_t *this, gf_defrag_info_t *defrag)
-{
- gf_msg(this->name, GF_LOG_DEBUG, 0, DHT_MSG_TIER_RESUME,
- "Pause end. Resume tiering");
-
- gf_defrag_set_pause_state(&defrag->tier_conf, TIER_RUNNING);
-
- gf_event(EVENT_TIER_RESUME, "vol=%s", defrag->tier_conf.volname);
-
- return 0;
-}
-
-int
-gf_defrag_start_detach_tier(gf_defrag_info_t *defrag)
-{
- defrag->cmd = GF_DEFRAG_CMD_START_DETACH_TIER;
-
- return 0;
-}
-
int
gf_defrag_stop(dht_conf_t *conf, gf_defrag_status_t status, dict_t *output)
{