[sheepdog] [PATCH] sheep, dog: add speed throttling of auto-recovery
FUKUDA Yasuhito
fukuda.yasuhito at po.ntts.co.jp
Wed Dec 17 09:32:49 CET 2014
Current auto recovery to consume as much as possible the resources of sheepdog node.
So, this patch intended to allow the speed throttling of auto-recovery.
By speed throttling, reduce the resource consumption at auto recovery.
Add new options to sheep and dog commands.
Its options are "interval" and "object processing number".
see examples follows.
ex) sheep -R max=5,interval=1000 /var/lib/sheepdog
dog node recovery set-throttle 5 1000
dog node recovery get-throttle
Signed-off-by: Yasuhito Fukuda <fukuda.yasuhito at po.ntts.co.jp>
---
dog/node.c | 146 +++++++++++++++++++++++++++++++++++++++++++++-
include/internal_proto.h | 2 +
include/sheepdog_proto.h | 6 ++
sheep/ops.c | 38 ++++++++++++
sheep/recovery.c | 139 ++++++++++++++++++++++++++++++++++++++++++-
sheep/sheep.c | 41 +++++++++++++
sheep/sheep_priv.h | 4 +
7 files changed, 370 insertions(+), 6 deletions(-)
diff --git a/dog/node.c b/dog/node.c
index a4e9142..d4c8fe7 100644
--- a/dog/node.c
+++ b/dog/node.c
@@ -183,7 +183,7 @@ static int node_recovery_progress(void)
return result < 0 ? EXIT_SYSFAIL : EXIT_SUCCESS;
}
-static int node_recovery(int argc, char **argv)
+static int node_recovery_info(int argc, char **argv)
{
struct sd_node *n;
int ret, i = 0;
@@ -235,6 +235,120 @@ static int node_recovery(int argc, char **argv)
return EXIT_SUCCESS;
}
+static int node_recovery_set(int argc, char **argv)
+{
+ char *p;
+ struct recovery_throttling *rthrottling;
+
+ rthrottling = xmalloc(sizeof(struct recovery_throttling));
+
+ if (!argv[optind] || !argv[optind + 1]) {
+ sd_err("Invalid interval max (%s), interval (%s)",
+ argv[optind], argv[optind + 1]);
+ exit(EXIT_USAGE);
+ }
+
+ rthrottling->max_exec_count = strtoul(argv[optind], &p, 10);
+ if (argv[optind] == p || rthrottling->max_exec_count < 0 ||
+ UINT32_MAX <= rthrottling->max_exec_count || errno != 0 ||
+ *p != '\0') {
+ sd_err("Invalid max (%s)", argv[optind]);
+ exit(EXIT_USAGE);
+ }
+
+ optind++;
+
+ rthrottling->queue_work_interval = strtoull(argv[optind], &p, 10);
+ if (argv[optind] == p || rthrottling->queue_work_interval < 0 ||
+ UINT64_MAX <= rthrottling->queue_work_interval || errno != 0 ||
+ *p != '\0') {
+ sd_err("Invalid interval (%s)", argv[optind]);
+ exit(EXIT_USAGE);
+ }
+
+ if ((rthrottling->max_exec_count == 0 &&
+ rthrottling->queue_work_interval != 0) ||
+ (rthrottling->max_exec_count != 0 &&
+ rthrottling->queue_work_interval == 0)) {
+ sd_err("Invalid interval max (%"PRIu32"), interval (%"PRIu64")",
+ rthrottling->max_exec_count, rthrottling->queue_work_interval);
+ exit(EXIT_USAGE);
+ }
+
+ int ret = 0;
+ struct sd_req req;
+ struct sd_rsp *rsp = (struct sd_rsp *)&req;
+
+ sd_init_req(&req, SD_OP_SET_RECOVERY);
+ req.flags = SD_FLAG_CMD_WRITE;
+ req.data_length = sizeof(struct recovery_throttling);
+ ret = dog_exec_req(&sd_nid, &req, rthrottling);
+
+ if (ret < 0)
+ ret = EXIT_SYSFAIL;
+
+ if (rsp->result == SD_RES_SUCCESS)
+ ret = EXIT_SUCCESS;
+ else
+ ret = EXIT_FAILURE;
+
+ switch (ret) {
+ case EXIT_FAILURE:
+ case EXIT_SYSFAIL:
+ sd_err("Failed to execute request");
+ ret = -1;
+ break;
+ case EXIT_SUCCESS:
+ /* do nothing */
+ break;
+ default:
+ sd_err("unknown return code: %d", ret);
+ ret = -1;
+ break;
+ }
+
+ free(rthrottling);
+ return ret;
+}
+
+static int node_recovery_get(int argc, char **argv)
+{
+ struct recovery_throttling rthrottling;
+ int ret = 0;
+
+ struct sd_req req;
+ struct sd_rsp *rsp = (struct sd_rsp *)&req;
+
+ sd_init_req(&req, SD_OP_GET_RECOVERY);
+ req.data_length = sizeof(rthrottling);
+
+ ret = dog_exec_req(&sd_nid, &req, &rthrottling);
+ if (ret < 0)
+ ret = EXIT_SYSFAIL;
+
+ if (rsp->result == SD_RES_SUCCESS)
+ ret = EXIT_SUCCESS;
+ else
+ ret = EXIT_FAILURE;
+
+ switch (ret) {
+ case EXIT_FAILURE:
+ case EXIT_SYSFAIL:
+ sd_err("Failed to execute request");
+ ret = -1;
+ break;
+ case EXIT_SUCCESS:
+ sd_info("max (%"PRIu32"), interval (%"PRIu64")",
+ rthrottling.max_exec_count, rthrottling.queue_work_interval);
+ break;
+ default:
+ sd_err("unknown return code: %d", ret);
+ ret = -1;
+ break;
+ }
+ return ret;
+}
+
static struct sd_node *idx_to_node(struct rb_root *nroot, int idx)
{
struct sd_node *n = rb_entry(rb_first(nroot), struct sd_node, rb);
@@ -538,6 +652,31 @@ static struct sd_option node_options[] = {
{ 0, NULL, false, NULL },
};
+static struct subcommand node_recovery_cmd[] = {
+ {"info", NULL, "aphPrT", "show recovery information of nodes (default)",
+ NULL, CMD_NEED_NODELIST, node_recovery_info, node_options},
+ {"set-throttle", "<max> <interval>", NULL, "set new throttling", NULL,
+ CMD_NEED_ARG|CMD_NEED_NODELIST, node_recovery_set, node_options},
+ {"get-throttle", NULL, NULL, "get current throttling", NULL,
+ CMD_NEED_NODELIST, node_recovery_get, node_options},
+ {NULL},
+};
+
+static int node_recovery(int argc, char **argv)
+{
+ int ret;
+ if (argc == optind) {
+ ret = update_node_list(SD_MAX_NODES);
+ if (ret < 0) {
+ sd_err("Failed to get node list");
+ exit(EXIT_SYSFAIL);
+ }
+ return node_recovery_info(argc, argv);
+ }
+
+ return do_generic_subcommand(node_recovery_cmd, argc, argv);
+}
+
static int node_log_level_set(int argc, char **argv)
{
int ret = 0;
@@ -632,8 +771,9 @@ static struct subcommand node_cmd[] = {
CMD_NEED_NODELIST, node_list},
{"info", NULL, "aprhT", "show information about each node", NULL,
CMD_NEED_NODELIST, node_info},
- {"recovery", NULL, "aphPrT", "show recovery information of nodes", NULL,
- CMD_NEED_NODELIST, node_recovery, node_options},
+ {"recovery", "<max> <interval>", "aphPrT",
+ "show recovery information or set/get recovery speed throttling of nodes",
+ node_recovery_cmd, 0, node_recovery, node_options},
{"md", "[disks]", "aprAfhT", "See 'dog node md' for more information",
node_md_cmd, CMD_NEED_ARG, node_md, node_options},
{"stat", NULL, "aprwhT", "show stat information about the node", NULL,
diff --git a/include/internal_proto.h b/include/internal_proto.h
index 3f5d77f..f6ba18e 100644
--- a/include/internal_proto.h
+++ b/include/internal_proto.h
@@ -111,6 +111,8 @@
#define SD_OP_VDI_STATE_SNAPSHOT_CTL 0xC7
#define SD_OP_INODE_COHERENCE 0xC8
#define SD_OP_READ_DEL_VDIS 0xC9
+#define SD_OP_GET_RECOVERY 0xCA
+#define SD_OP_SET_RECOVERY 0xCB
/* internal flags for hdr.flags, must be above 0x80 */
#define SD_FLAG_CMD_RECOVERY 0x0080
diff --git a/include/sheepdog_proto.h b/include/sheepdog_proto.h
index 4f0c48c..5f6d157 100644
--- a/include/sheepdog_proto.h
+++ b/include/sheepdog_proto.h
@@ -272,6 +272,12 @@ struct generation_reference {
int32_t count;
};
+struct recovery_throttling {
+ uint32_t max_exec_count;
+ uint64_t queue_work_interval;
+ bool throttling;
+};
+
struct sd_inode {
char name[SD_MAX_VDI_LEN];
char tag[SD_MAX_VDI_TAG_LEN];
diff --git a/sheep/ops.c b/sheep/ops.c
index e4daca2..2b4a769 100644
--- a/sheep/ops.c
+++ b/sheep/ops.c
@@ -1444,6 +1444,30 @@ static int cluster_inode_coherence(const struct sd_req *req,
!!req->inode_coherence.validate, &sender->nid);
}
+static int local_get_recovery(struct request *req)
+{
+ struct recovery_throttling rthrottling;
+
+ rthrottling = get_recovery();
+ memcpy(req->data, &rthrottling, sizeof(rthrottling));
+ req->rp.data_length = sizeof(rthrottling);
+
+ return SD_RES_SUCCESS;
+}
+
+static int local_set_recovery(struct request *req)
+{
+ struct recovery_throttling *rthrottling;
+
+ rthrottling = xmalloc(sizeof(struct recovery_throttling));
+
+ memcpy(rthrottling, req->data, sizeof(struct recovery_throttling));
+ set_recovery(rthrottling);
+
+ free(rthrottling);
+ return SD_RES_SUCCESS;
+}
+
static struct sd_op_template sd_ops[] = {
/* cluster operations */
@@ -1891,6 +1915,20 @@ static struct sd_op_template sd_ops[] = {
.type = SD_OP_TYPE_PEER,
.process_work = peer_decref_object,
},
+
+ [SD_OP_GET_RECOVERY] = {
+ .name = "GET_RECOVERY",
+ .type = SD_OP_TYPE_LOCAL,
+ .force = true,
+ .process_work = local_get_recovery,
+ },
+
+ [SD_OP_SET_RECOVERY] = {
+ .name = "SET_RECOVERY",
+ .type = SD_OP_TYPE_LOCAL,
+ .force = true,
+ .process_work = local_set_recovery,
+ },
};
const struct sd_op_template *get_sd_op(uint8_t opcode)
diff --git a/sheep/recovery.c b/sheep/recovery.c
index 85dad21..325122b 100644
--- a/sheep/recovery.c
+++ b/sheep/recovery.c
@@ -78,6 +78,15 @@ struct recovery_info {
struct sd_mutex vinfo_lock;
struct sd_node *excluded;
+
+ uint32_t max_exec_count;
+ uint64_t queue_work_interval;
+ bool throttling;
+};
+
+struct recovery_timer {
+ void (*callback)(void *);
+ void *data;
};
static struct recovery_info *next_rinfo;
@@ -900,6 +909,91 @@ void resume_suspended_recovery(void)
}
}
+static void recovery_timer_handler(int fd, int events, void *data)
+{
+ struct recovery_timer *t = data;
+ uint64_t val;
+
+ if (read(fd, &val, sizeof(val)) < 0)
+ return;
+ t->callback(t->data);
+ unregister_event(fd);
+ close(fd);
+}
+
+static void add_recovery_timer(struct recovery_timer *t, unsigned int mseconds)
+{
+ struct itimerspec it;
+ int tfd;
+
+ tfd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK);
+ if (tfd < 0) {
+ sd_err("timerfd_create: %m");
+ return;
+ }
+
+ memset(&it, 0, sizeof(it));
+ it.it_value.tv_sec = mseconds / 1000;
+ it.it_value.tv_nsec = (mseconds % 1000) * 1000000;
+
+ if (timerfd_settime(tfd, 0, &it, NULL) < 0) {
+ sd_err("timerfd_settime: %m");
+ return;
+ }
+
+ if (register_event(tfd, recovery_timer_handler, t) < 0)
+ sd_err("failed to register timer fd");
+}
+
+static void recover_next_object_delay(void *arg)
+{
+ struct recovery_info *rinfo = main_thread_get(current_rinfo);
+ uint32_t nr_threads = md_nr_disks() * 2;
+ double thread_unit_exec = 0;
+ double mod = 0;
+
+ if (!rinfo)
+ return;
+
+ thread_unit_exec = (double) rinfo->max_exec_count / nr_threads;
+ mod = rinfo->max_exec_count % nr_threads;
+
+ if (rinfo->max_exec_count <= nr_threads || mod != 0) {
+ if (rand() % 100 + 1 <= (mod / nr_threads) * 100)
+ thread_unit_exec = ceil(thread_unit_exec);
+ else
+ thread_unit_exec = floor(thread_unit_exec);
+ }
+
+ for (int i = 0; i < thread_unit_exec; i++) {
+ rinfo = main_thread_get(current_rinfo);
+
+ if (!rinfo)
+ return;
+
+ if (rinfo->next - rinfo->done > rinfo->max_exec_count)
+ break;
+
+ recover_next_object(rinfo);
+ }
+
+ if (rinfo->throttling != sys->rthrottling.throttling) {
+ rinfo->max_exec_count = sys->rthrottling.max_exec_count;
+ rinfo->queue_work_interval =
+ sys->rthrottling.queue_work_interval;
+ rinfo->throttling = sys->rthrottling.throttling;
+ }
+
+ if (rinfo->throttling) {
+ static struct recovery_timer rt = {
+ .callback = recover_next_object_delay,
+ .data = &rt,
+ };
+ add_recovery_timer(&rt, rinfo->queue_work_interval);
+ } else
+ recover_next_object(rinfo);
+}
+
static void recover_object_main(struct work *work)
{
struct recovery_work *rw = container_of(work, struct recovery_work,
@@ -935,7 +1029,16 @@ static void recover_object_main(struct work *work)
if (rinfo->done >= rinfo->count)
goto finish_recovery;
- recover_next_object(rinfo);
+ if (!rinfo->throttling && !sys->rthrottling.throttling)
+ recover_next_object(rinfo);
+ else if (!rinfo->throttling && sys->rthrottling.throttling) {
+ static struct recovery_timer rt = {
+ .callback = recover_next_object_delay,
+ .data = &rt,
+ };
+ add_recovery_timer(&rt, sys->rthrottling.queue_work_interval);
+ }
+
free_recovery_obj_work(row);
return;
finish_recovery:
@@ -982,8 +1085,17 @@ static void finish_object_list(struct work *work)
return;
}
- for (uint32_t i = 0; i < nr_threads; i++)
- recover_next_object(rinfo);
+ for (uint32_t i = 0; i < nr_threads; i++) {
+ if (rinfo->throttling) {
+ static struct recovery_timer rt = {
+ .callback = recover_next_object_delay,
+ .data = &rt,
+ };
+ add_recovery_timer(&rt, rinfo->queue_work_interval);
+ } else
+ recover_next_object(rinfo);
+ }
+
return;
}
@@ -1143,6 +1255,9 @@ int start_recovery(struct vnode_info *cur_vinfo, struct vnode_info *old_vinfo,
rinfo->max_epoch = sys->cinfo.epoch;
rinfo->vinfo_array = xzalloc(sizeof(struct vnode_info *) *
rinfo->max_epoch);
+ rinfo->max_exec_count = sys->rthrottling.max_exec_count;
+ rinfo->queue_work_interval = sys->rthrottling.queue_work_interval;
+ rinfo->throttling = sys->rthrottling.throttling;
sd_init_mutex(&rinfo->vinfo_lock);
if (epoch_lifted)
rinfo->notify_complete = true; /* Reweight or node recovery */
@@ -1236,3 +1351,21 @@ void get_recovery_state(struct recovery_state *state)
state->nr_finished = rinfo->done;
state->nr_total = rinfo->count;
}
+
+void set_recovery(struct recovery_throttling *rthrottling)
+{
+ sys->rthrottling.max_exec_count = rthrottling->max_exec_count;
+ sys->rthrottling.queue_work_interval =
+ rthrottling->queue_work_interval;
+ if (rthrottling->max_exec_count > 0 &&
+ rthrottling->queue_work_interval > 0)
+ sys->rthrottling.throttling = true;
+ else
+ sys->rthrottling.throttling = false;
+}
+
+struct recovery_throttling get_recovery(void)
+{
+ return sys->rthrottling;
+}
+
diff --git a/sheep/sheep.c b/sheep/sheep.c
index ef45a33..9fc7610 100644
--- a/sheep/sheep.c
+++ b/sheep/sheep.c
@@ -115,6 +115,12 @@ static const char log_help[] =
" syslog syslog of the system\n"
" stdout standard output\n";
+static const char recovery_help[] =
+"Available arguments:\n"
+"\tmax=: object recovery process maximum count of each interval\n"
+"\tinterval=: object recovery interval time (millisec)\n"
+"Example:\n\t$ sheep -R max=50,interval=1000 ...\n";
+
static struct sd_option sheep_options[] = {
{'b', "bindaddr", true, "specify IP address of interface to listen on",
bind_help},
@@ -137,6 +143,8 @@ static struct sd_option sheep_options[] = {
{'P', "pidfile", true, "create a pid file"},
{'r', "http", true, "enable http service. (default: disabled)",
http_help},
+ {'R', "recovery", true, "specify the recovery speed throttling",
+ recovery_help},
{'u', "upgrade", false, "upgrade to the latest data layout"},
{'v', "version", false, "show the version"},
{'w', "cache", true, "enable object cache", cache_help},
@@ -424,6 +432,26 @@ static struct option_parser journal_parsers[] = {
{ NULL, NULL },
};
+static uint32_t max_exec_count;
+static uint64_t queue_work_interval;
+static int max_exec_count_parser(const char *s)
+{
+ max_exec_count = strtol(s, NULL, 10);
+ return 0;
+}
+
+static int queue_work_interval_parser(const char *s)
+{
+ queue_work_interval = strtol(s, NULL, 10);
+ return 0;
+}
+
+static struct option_parser recovery_parsers[] = {
+ { "max=", max_exec_count_parser },
+ { "interval=", queue_work_interval_parser },
+ { NULL, NULL },
+};
+
static size_t get_nr_nodes(void)
{
struct vnode_info *vinfo;
@@ -633,6 +661,10 @@ int main(int argc, char **argv)
sys->node_status = SD_NODE_STATUS_INITIALIZATION;
+ sys->rthrottling.max_exec_count = 0;
+ sys->rthrottling.queue_work_interval = 0;
+ sys->rthrottling.throttling = false;
+
install_crash_handler(crash_handler);
signal(SIGPIPE, SIG_IGN);
@@ -751,6 +783,15 @@ int main(int argc, char **argv)
case 'h':
usage(0);
break;
+ case 'R':
+ if (option_parse(optarg, ",", recovery_parsers) < 0)
+ exit(1);
+ sys->rthrottling.max_exec_count = max_exec_count;
+ sys->rthrottling.queue_work_interval
+ = queue_work_interval;
+ if (max_exec_count > 0 && queue_work_interval > 0)
+ sys->rthrottling.throttling = true;
+ break;
case 'v':
fprintf(stdout, "Sheepdog daemon version %s\n",
PACKAGE_VERSION);
diff --git a/sheep/sheep_priv.h b/sheep/sheep_priv.h
index 4ac08f8..170e8ff 100644
--- a/sheep/sheep_priv.h
+++ b/sheep/sheep_priv.h
@@ -143,6 +143,8 @@ struct system_info {
bool gateway_only;
bool nosync;
+ struct recovery_throttling rthrottling;
+
struct work_queue *net_wqueue;
struct work_queue *gateway_wqueue;
struct work_queue *io_wqueue;
@@ -428,6 +430,8 @@ int start_recovery(struct vnode_info *cur_vinfo, struct vnode_info *, bool,
bool oid_in_recovery(uint64_t oid);
bool node_in_recovery(void);
void get_recovery_state(struct recovery_state *state);
+void set_recovery(struct recovery_throttling *rthrottling);
+struct recovery_throttling get_recovery(void);
int read_backend_object(uint64_t oid, char *data, unsigned int datalen,
uint64_t offset);
--
1.7.1
--
NTTソフトウェア株式会社
クラウド事業部 第一事業ユニット(C一BU)
福田康人(FUKUDA Yasuhito)
E-mail:fukuda.yasuhito at po.ntts.co.jp
〒220-0012 横浜市西区みなとみらい4-4-5
横浜アイマークプレイス13階
TEL:045-212-7393/FAX:045-662-7856
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