mirror of https://github.com/schoebel/mars
414 lines
12 KiB
C
414 lines
12 KiB
C
/*
|
|
* MARS Long Distance Replication Software
|
|
*
|
|
* This file is part of MARS project: http://schoebel.github.io/mars/
|
|
*
|
|
* Copyright (C) 2010-2014 Thomas Schoebel-Theuer
|
|
* Copyright (C) 2011-2014 1&1 Internet AG
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
|
|
//#define BRICK_DEBUGGING
|
|
//#define MARS_DEBUGGING
|
|
//#define IO_DEBUGGING
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/string.h>
|
|
|
|
#include <linux/sysctl.h>
|
|
#include <linux/uaccess.h>
|
|
|
|
#include "strategy.h"
|
|
#include "mars_proc.h"
|
|
#include "../lib_mapfree.h"
|
|
#include "../mars_bio.h"
|
|
#include "../mars_aio.h"
|
|
#include "../mars_if.h"
|
|
#include "../mars_copy.h"
|
|
#include "../mars_client.h"
|
|
#include "../mars_server.h"
|
|
#include "../mars_trans_logger.h"
|
|
|
|
#include "../buildtag.h"
|
|
|
|
const char mars_version_string[] = BUILDTAG " (" BUILDHOST " " BUILDDATE ") "
|
|
#ifndef CONFIG_MARS_DEBUG
|
|
"production"
|
|
#else
|
|
"DEBUG"
|
|
#endif
|
|
#ifdef CONFIG_MARS_DEBUG_MEM
|
|
" BAD_PERFORMANCE"
|
|
#endif
|
|
#ifdef CONFIG_MARS_DEBUG_ORDER0
|
|
" EVIL_PERFORMANCE"
|
|
#endif
|
|
;
|
|
|
|
mars_info_fn mars_info = NULL;
|
|
|
|
static
|
|
int trigger_sysctl_handler(
|
|
struct ctl_table *table,
|
|
int write,
|
|
void __user *buffer,
|
|
size_t *length,
|
|
loff_t *ppos)
|
|
{
|
|
ssize_t res = 0;
|
|
size_t len = *length;
|
|
|
|
MARS_DBG("write = %d len = %ld pos = %lld\n", write, len, *ppos);
|
|
|
|
if (!len || *ppos > 0) {
|
|
goto done;
|
|
}
|
|
|
|
if (write) {
|
|
char tmp[8] = {};
|
|
int code = 0;
|
|
|
|
res = len; // fake consumption of all data
|
|
|
|
if (len > 7)
|
|
len = 7;
|
|
if (!copy_from_user(tmp, buffer, len)) {
|
|
sscanf(tmp, "%d", &code);
|
|
if (code > 0) {
|
|
mars_trigger();
|
|
}
|
|
if (code > 1) {
|
|
mars_remote_trigger();
|
|
}
|
|
}
|
|
} else {
|
|
char *answer = "MARS module not operational\n";
|
|
char *tmp = NULL;
|
|
int mylen;
|
|
|
|
if (mars_info) {
|
|
answer = "internal error while determining mars_info\n";
|
|
tmp = mars_info();
|
|
if (tmp)
|
|
answer = tmp;
|
|
}
|
|
|
|
mylen = strlen(answer);
|
|
if (len > mylen)
|
|
len = mylen;
|
|
res = len;
|
|
if (copy_to_user(buffer, answer, len)) {
|
|
MARS_ERR("write %ld bytes at %p failed\n", len, buffer);
|
|
res = -EFAULT;
|
|
}
|
|
brick_string_free(tmp);
|
|
}
|
|
|
|
done:
|
|
MARS_DBG("res = %ld\n", res);
|
|
*length = res;
|
|
if (res >= 0) {
|
|
*ppos += res;
|
|
return 0;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
static
|
|
int lamport_sysctl_handler(
|
|
struct ctl_table *table,
|
|
int write,
|
|
void __user *buffer,
|
|
size_t *length,
|
|
loff_t *ppos)
|
|
{
|
|
ssize_t res = 0;
|
|
size_t len = *length;
|
|
|
|
MARS_DBG("write = %d len = %ld pos = %lld\n", write, len, *ppos);
|
|
|
|
if (!len || *ppos > 0) {
|
|
goto done;
|
|
}
|
|
|
|
if (write) {
|
|
return -EINVAL;
|
|
} else {
|
|
int my_len = 128;
|
|
char *tmp = brick_string_alloc(my_len);
|
|
struct timespec know = CURRENT_TIME;
|
|
struct timespec lnow;
|
|
|
|
get_lamport(&lnow);
|
|
|
|
res = scnprintf(tmp, my_len,
|
|
"CURRENT_TIME=%ld.%09ld\n"
|
|
"lamport_now=%ld.%09ld\n",
|
|
know.tv_sec, know.tv_nsec,
|
|
lnow.tv_sec, lnow.tv_nsec
|
|
);
|
|
|
|
if (copy_to_user(buffer, tmp, res)) {
|
|
MARS_ERR("write %ld bytes at %p failed\n", res, buffer);
|
|
res = -EFAULT;
|
|
}
|
|
brick_string_free(tmp);
|
|
}
|
|
|
|
done:
|
|
MARS_DBG("res = %ld\n", res);
|
|
*length = res;
|
|
if (res >= 0) {
|
|
*ppos += res;
|
|
return 0;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
#ifdef CONFIG_MARS_LOADAVG_LIMIT
|
|
int mars_max_loadavg = 0;
|
|
EXPORT_SYMBOL_GPL(mars_max_loadavg);
|
|
#endif
|
|
|
|
#ifdef CTL_UNNUMBERED
|
|
#define _CTL_NAME .ctl_name = CTL_UNNUMBERED,
|
|
#define _CTL_STRATEGY(handler) .strategy = &handler,
|
|
#else
|
|
#define _CTL_NAME /*empty*/
|
|
#define _CTL_STRATEGY(handler) /*empty*/
|
|
#endif
|
|
|
|
#define VEC_ENTRY(NAME,VAR,MODE,COUNT) \
|
|
{ \
|
|
_CTL_NAME \
|
|
.procname = NAME, \
|
|
.data = &(VAR), \
|
|
.maxlen = sizeof(int) * (COUNT),\
|
|
.mode = MODE, \
|
|
.proc_handler = &proc_dointvec, \
|
|
_CTL_STRATEGY(sysctl_intvec) \
|
|
}
|
|
|
|
#define INT_ENTRY(NAME,VAR,MODE) \
|
|
VEC_ENTRY(NAME, VAR, MODE, 1)
|
|
|
|
#define LIMITER_ENTRIES(VAR, PREFIX, SUFFIX) \
|
|
INT_ENTRY(PREFIX "_total_ops_" SUFFIX, (VAR)->lim_total_ops, 0400), \
|
|
INT_ENTRY(PREFIX "_total_sum_" SUFFIX, (VAR)->lim_total_sum, 0400), \
|
|
INT_ENTRY(PREFIX "_ratelimit_" SUFFIX, (VAR)->lim_max_rate, 0600), \
|
|
INT_ENTRY(PREFIX "_maxdelay_ms", (VAR)->lim_max_delay,0600), \
|
|
INT_ENTRY(PREFIX "_minwindow_ms", (VAR)->lim_min_window,0600), \
|
|
INT_ENTRY(PREFIX "_maxwindow_ms", (VAR)->lim_max_window,0600), \
|
|
INT_ENTRY(PREFIX "_cumul_" SUFFIX, (VAR)->lim_cumul, 0600), \
|
|
INT_ENTRY(PREFIX "_count_ops", (VAR)->lim_count, 0600), \
|
|
INT_ENTRY(PREFIX "_rate_" SUFFIX, (VAR)->lim_rate, 0400) \
|
|
|
|
#define THRESHOLD_ENTRIES(VAR, PREFIX) \
|
|
INT_ENTRY(PREFIX "_threshold_us", (VAR)->thr_limit, 0600), \
|
|
INT_ENTRY(PREFIX "_factor_percent", (VAR)->thr_factor, 0600), \
|
|
INT_ENTRY(PREFIX "_plus_us", (VAR)->thr_plus, 0600), \
|
|
INT_ENTRY(PREFIX "_max_ms", (VAR)->thr_max, 0600), \
|
|
INT_ENTRY(PREFIX "_triggered", (VAR)->thr_triggered,0400), \
|
|
INT_ENTRY(PREFIX "_true_hit", (VAR)->thr_true_hit, 0400) \
|
|
|
|
static
|
|
struct ctl_table traffic_tuning_table[] = {
|
|
LIMITER_ENTRIES(&client_limiter, "client_role_traffic", "kb"),
|
|
LIMITER_ENTRIES(&server_limiter, "server_role_traffic", "kb"),
|
|
{}
|
|
};
|
|
|
|
static
|
|
struct ctl_table io_tuning_table[] = {
|
|
LIMITER_ENTRIES(&global_writeback.limiter, "writeback", "kb"),
|
|
INT_ENTRY("writeback_until_percent", global_writeback.until_percent, 0600),
|
|
THRESHOLD_ENTRIES(&global_io_threshold, "global_io"),
|
|
THRESHOLD_ENTRIES(&bio_submit_threshold, "bio_submit"),
|
|
THRESHOLD_ENTRIES(&bio_io_threshold[0], "bio_io_r"),
|
|
THRESHOLD_ENTRIES(&bio_io_threshold[1], "bio_io_w"),
|
|
THRESHOLD_ENTRIES(&aio_submit_threshold, "aio_submit"),
|
|
THRESHOLD_ENTRIES(&aio_io_threshold[0], "aio_io_r"),
|
|
THRESHOLD_ENTRIES(&aio_io_threshold[1], "aio_io_w"),
|
|
THRESHOLD_ENTRIES(&aio_sync_threshold, "aio_sync"),
|
|
{}
|
|
};
|
|
|
|
static
|
|
struct ctl_table tcp_tuning_table[] = {
|
|
INT_ENTRY("ip_tos", default_tcp_params.ip_tos, 0600),
|
|
INT_ENTRY("tcp_window_size", default_tcp_params.tcp_window_size, 0600),
|
|
INT_ENTRY("tcp_nodelay", default_tcp_params.tcp_nodelay, 0600),
|
|
INT_ENTRY("tcp_timeout", default_tcp_params.tcp_timeout, 0600),
|
|
INT_ENTRY("tcp_keepcnt", default_tcp_params.tcp_keepcnt, 0600),
|
|
INT_ENTRY("tcp_keepintvl", default_tcp_params.tcp_keepintvl, 0600),
|
|
INT_ENTRY("tcp_keepidle", default_tcp_params.tcp_keepidle, 0600),
|
|
{}
|
|
};
|
|
|
|
static
|
|
struct ctl_table mars_table[] = {
|
|
{
|
|
_CTL_NAME
|
|
.procname = "version",
|
|
.data = (char*)mars_version_string,
|
|
.maxlen = sizeof(mars_version_string),
|
|
.mode = 0400,
|
|
.proc_handler = &proc_dostring,
|
|
},
|
|
{
|
|
_CTL_NAME
|
|
.procname = "trigger",
|
|
.mode = 0200,
|
|
.proc_handler = &trigger_sysctl_handler,
|
|
},
|
|
{
|
|
_CTL_NAME
|
|
.procname = "info",
|
|
.mode = 0400,
|
|
.proc_handler = &trigger_sysctl_handler,
|
|
},
|
|
{
|
|
_CTL_NAME
|
|
.procname = "lamport_clock",
|
|
.mode = 0400,
|
|
.proc_handler = &lamport_sysctl_handler,
|
|
},
|
|
INT_ENTRY("show_log_messages", brick_say_logging, 0600),
|
|
INT_ENTRY("show_debug_messages", brick_say_debug, 0600),
|
|
INT_ENTRY("show_statistics_global", global_show_statist, 0600),
|
|
INT_ENTRY("show_statistics_server", server_show_statist, 0600),
|
|
INT_ENTRY("show_connections", global_show_connections, 0600),
|
|
INT_ENTRY("aio_sync_mode", aio_sync_mode, 0600),
|
|
#ifdef CONFIG_MARS_DEBUG
|
|
INT_ENTRY("debug_crash_mode", mars_crash_mode, 0600),
|
|
INT_ENTRY("debug_hang_mode", mars_hang_mode, 0600),
|
|
#endif
|
|
INT_ENTRY("logger_completion_semantics", trans_logger_completion_semantics, 0600),
|
|
INT_ENTRY("logger_do_crc", trans_logger_do_crc, 0600),
|
|
INT_ENTRY("syslog_min_class", brick_say_syslog_min, 0600),
|
|
INT_ENTRY("syslog_max_class", brick_say_syslog_max, 0600),
|
|
INT_ENTRY("syslog_flood_class", brick_say_syslog_flood_class, 0600),
|
|
INT_ENTRY("syslog_flood_limit", brick_say_syslog_flood_limit, 0600),
|
|
INT_ENTRY("syslog_flood_recovery_s", brick_say_syslog_flood_recovery, 0600),
|
|
INT_ENTRY("delay_say_on_overflow",delay_say_on_overflow, 0600),
|
|
INT_ENTRY("mapfree_period_sec", mapfree_period_sec, 0600),
|
|
INT_ENTRY("mapfree_grace_keep_mb", mapfree_grace_keep_mb, 0600),
|
|
INT_ENTRY("logger_max_interleave", trans_logger_max_interleave, 0600),
|
|
INT_ENTRY("logger_resume", trans_logger_resume, 0600),
|
|
INT_ENTRY("logger_replay_timeout_sec", trans_logger_replay_timeout, 0600),
|
|
INT_ENTRY("mem_limit_percent", mars_mem_percent, 0600),
|
|
INT_ENTRY("logger_mem_used_kb", trans_logger_mem_usage, 0400),
|
|
INT_ENTRY("mem_used_raw_kb", brick_global_block_used,0400),
|
|
#ifdef CONFIG_MARS_MEM_PREALLOC
|
|
INT_ENTRY("mem_allow_freelist", brick_allow_freelist, 0600),
|
|
VEC_ENTRY("mem_freelist_max", brick_mem_freelist_max, 0600, BRICK_MAX_ORDER+1),
|
|
VEC_ENTRY("mem_alloc_count", brick_mem_alloc_count, 0400, BRICK_MAX_ORDER+1),
|
|
VEC_ENTRY("mem_alloc_max", brick_mem_alloc_count, 0600, BRICK_MAX_ORDER+1),
|
|
#endif
|
|
INT_ENTRY("io_flying_count", mars_global_io_flying, 0400),
|
|
INT_ENTRY("copy_overlap", mars_copy_overlap, 0600),
|
|
INT_ENTRY("copy_timeout", mars_copy_timeout, 0600),
|
|
INT_ENTRY("copy_read_prio", mars_copy_read_prio, 0600),
|
|
INT_ENTRY("copy_write_prio", mars_copy_write_prio, 0600),
|
|
INT_ENTRY("copy_read_max_fly", mars_copy_read_max_fly, 0600),
|
|
INT_ENTRY("copy_write_max_fly", mars_copy_write_max_fly,0600),
|
|
INT_ENTRY("statusfiles_rollover_sec", mars_rollover_interval, 0600),
|
|
INT_ENTRY("scan_interval_sec", mars_scan_interval, 0600),
|
|
INT_ENTRY("propagate_interval_sec", mars_propagate_interval, 0600),
|
|
INT_ENTRY("sync_flip_interval_sec", mars_sync_flip_interval, 0600),
|
|
INT_ENTRY("peer_abort", mars_peer_abort, 0600),
|
|
INT_ENTRY("client_abort", mars_client_abort, 0600),
|
|
INT_ENTRY("do_fast_fullsync", mars_fast_fullsync, 0600),
|
|
INT_ENTRY("logrot_auto_gb", global_logrot_auto, 0600),
|
|
INT_ENTRY("remaining_space_kb", global_remaining_space, 0400),
|
|
INT_ENTRY("required_total_space_0_gb", global_free_space_0, 0600),
|
|
INT_ENTRY("required_free_space_1_gb", global_free_space_1, 0600),
|
|
INT_ENTRY("required_free_space_2_gb", global_free_space_2, 0600),
|
|
INT_ENTRY("required_free_space_3_gb", global_free_space_3, 0600),
|
|
INT_ENTRY("required_free_space_4_gb", global_free_space_4, 0600),
|
|
INT_ENTRY("sync_want", global_sync_want, 0400),
|
|
INT_ENTRY("sync_nr", global_sync_nr, 0400),
|
|
INT_ENTRY("sync_limit", global_sync_limit, 0600),
|
|
INT_ENTRY("mars_emergency_mode", mars_emergency_mode, 0600),
|
|
INT_ENTRY("mars_reset_emergency", mars_reset_emergency, 0600),
|
|
INT_ENTRY("mars_keep_msg_s", mars_keep_msg, 0600),
|
|
INT_ENTRY("write_throttle_start_percent", mars_throttle_start, 0600),
|
|
INT_ENTRY("write_throttle_end_percent", mars_throttle_end, 0600),
|
|
INT_ENTRY("write_throttle_size_threshold_kb", if_throttle_start_size, 0400),
|
|
LIMITER_ENTRIES(&if_throttle, "write_throttle", "kb"),
|
|
#ifdef CONFIG_MARS_LOADAVG_LIMIT
|
|
INT_ENTRY("loadavg_limit", mars_max_loadavg, 0600),
|
|
#endif
|
|
// changing makes no sense because the server will immediately start upon modprobe
|
|
INT_ENTRY("mars_port", mars_net_default_port, 0400),
|
|
INT_ENTRY("network_io_timeout", global_net_io_timeout, 0600),
|
|
{
|
|
_CTL_NAME
|
|
.procname = "traffic_tuning",
|
|
.mode = 0500,
|
|
.child = traffic_tuning_table,
|
|
},
|
|
{
|
|
_CTL_NAME
|
|
.procname = "io_tuning",
|
|
.mode = 0500,
|
|
.child = io_tuning_table,
|
|
},
|
|
{
|
|
_CTL_NAME
|
|
.procname = "tcp_tuning",
|
|
.mode = 0500,
|
|
.child = tcp_tuning_table,
|
|
},
|
|
{}
|
|
};
|
|
|
|
static
|
|
struct ctl_table mars_root_table[] = {
|
|
{
|
|
_CTL_NAME
|
|
.procname = "mars",
|
|
.mode = 0500,
|
|
.child = mars_table,
|
|
},
|
|
{}
|
|
};
|
|
|
|
////////////////// module init stuff /////////////////////////
|
|
|
|
static struct ctl_table_header *header = NULL;
|
|
|
|
int __init init_mars_proc(void)
|
|
{
|
|
|
|
MARS_INF("init_proc()\n");
|
|
|
|
header = register_sysctl_table(mars_root_table);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void exit_mars_proc(void)
|
|
{
|
|
MARS_INF("exit_proc()\n");
|
|
if (header) {
|
|
unregister_sysctl_table(header);
|
|
header = NULL;
|
|
}
|
|
}
|