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authorDaniel Baumann <daniel.baumann@progress-linux.org>2018-11-07 12:19:29 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2018-11-07 12:20:17 +0000
commita64a253794ac64cb40befee54db53bde17dd0d49 (patch)
treec1024acc5f6e508814b944d99f112259bb28b1be /collectors/diskspace.plugin
parentNew upstream version 1.10.0+dfsg (diff)
downloadnetdata-a64a253794ac64cb40befee54db53bde17dd0d49.tar.xz
netdata-a64a253794ac64cb40befee54db53bde17dd0d49.zip
New upstream version 1.11.0+dfsgupstream/1.11.0+dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'collectors/diskspace.plugin')
-rw-r--r--collectors/diskspace.plugin/Makefile.am8
-rw-r--r--collectors/diskspace.plugin/Makefile.in464
-rw-r--r--collectors/diskspace.plugin/README.md5
-rw-r--r--collectors/diskspace.plugin/plugin_diskspace.c465
-rw-r--r--collectors/diskspace.plugin/plugin_diskspace.h34
5 files changed, 976 insertions, 0 deletions
diff --git a/collectors/diskspace.plugin/Makefile.am b/collectors/diskspace.plugin/Makefile.am
new file mode 100644
index 000000000..19554bed8
--- /dev/null
+++ b/collectors/diskspace.plugin/Makefile.am
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+dist_noinst_DATA = \
+ README.md \
+ $(NULL)
diff --git a/collectors/diskspace.plugin/Makefile.in b/collectors/diskspace.plugin/Makefile.in
new file mode 100644
index 000000000..ceebc5455
--- /dev/null
+++ b/collectors/diskspace.plugin/Makefile.in
@@ -0,0 +1,464 @@
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
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diff --git a/collectors/diskspace.plugin/README.md b/collectors/diskspace.plugin/README.md
new file mode 100644
index 000000000..74d6cde3c
--- /dev/null
+++ b/collectors/diskspace.plugin/README.md
@@ -0,0 +1,5 @@
+> for disks performance monitoring, see the `proc` plugin, [here](../proc.plugin/#monitoring-disks-performance-with-netdata)
+
+# diskspace.plugin
+
+This plugin monitors the disk space usage of mounted disks, under Linux.
diff --git a/collectors/diskspace.plugin/plugin_diskspace.c b/collectors/diskspace.plugin/plugin_diskspace.c
new file mode 100644
index 000000000..dca7c9076
--- /dev/null
+++ b/collectors/diskspace.plugin/plugin_diskspace.c
@@ -0,0 +1,465 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_diskspace.h"
+
+#define PLUGIN_DISKSPACE_NAME "diskspace.plugin"
+
+#define DELAULT_EXCLUDED_PATHS "/proc/* /sys/* /var/run/user/* /run/user/* /snap/* /var/lib/docker/*"
+#define DEFAULT_EXCLUDED_FILESYSTEMS "*gvfs *gluster* *s3fs *ipfs *davfs2 *httpfs *sshfs *gdfs *moosefs fusectl"
+#define CONFIG_SECTION_DISKSPACE "plugin:proc:diskspace"
+
+static struct mountinfo *disk_mountinfo_root = NULL;
+static int check_for_new_mountpoints_every = 15;
+static int cleanup_mount_points = 1;
+
+static inline void mountinfo_reload(int force) {
+ static time_t last_loaded = 0;
+ time_t now = now_realtime_sec();
+
+ if(force || now - last_loaded >= check_for_new_mountpoints_every) {
+ // mountinfo_free_all() can be called with NULL disk_mountinfo_root
+ mountinfo_free_all(disk_mountinfo_root);
+
+ // re-read mountinfo in case something changed
+ disk_mountinfo_root = mountinfo_read(0);
+
+ last_loaded = now;
+ }
+}
+
+// Data to be stored in DICTIONARY dict_mountpoints used by do_disk_space_stats().
+// This DICTIONARY is used to lookup the settings of the mount point on each iteration.
+struct mount_point_metadata {
+ int do_space;
+ int do_inodes;
+ int shown_error;
+ int updated;
+
+ size_t collected; // the number of times this has been collected
+
+ RRDSET *st_space;
+ RRDDIM *rd_space_used;
+ RRDDIM *rd_space_avail;
+ RRDDIM *rd_space_reserved;
+
+ RRDSET *st_inodes;
+ RRDDIM *rd_inodes_used;
+ RRDDIM *rd_inodes_avail;
+ RRDDIM *rd_inodes_reserved;
+};
+
+static DICTIONARY *dict_mountpoints = NULL;
+
+#define rrdset_obsolete_and_pointer_null(st) do { if(st) { rrdset_is_obsolete(st); (st) = NULL; } } while(st)
+
+int mount_point_cleanup(void *entry, void *data) {
+ (void)data;
+
+ struct mount_point_metadata *mp = (struct mount_point_metadata *)entry;
+ if(!mp) return 0;
+
+ if(likely(mp->updated)) {
+ mp->updated = 0;
+ return 0;
+ }
+
+ if(likely(cleanup_mount_points && mp->collected)) {
+ mp->collected = 0;
+ mp->updated = 0;
+ mp->shown_error = 0;
+
+ mp->rd_space_avail = NULL;
+ mp->rd_space_used = NULL;
+ mp->rd_space_reserved = NULL;
+
+ mp->rd_inodes_avail = NULL;
+ mp->rd_inodes_used = NULL;
+ mp->rd_inodes_reserved = NULL;
+
+ rrdset_obsolete_and_pointer_null(mp->st_space);
+ rrdset_obsolete_and_pointer_null(mp->st_inodes);
+ }
+
+ return 0;
+}
+
+static inline void do_disk_space_stats(struct mountinfo *mi, int update_every) {
+ const char *family = mi->mount_point;
+ const char *disk = mi->persistent_id;
+
+ static SIMPLE_PATTERN *excluded_mountpoints = NULL;
+ static SIMPLE_PATTERN *excluded_filesystems = NULL;
+ int do_space, do_inodes;
+
+ if(unlikely(!dict_mountpoints)) {
+ SIMPLE_PREFIX_MODE mode = SIMPLE_PATTERN_EXACT;
+
+ if(config_move("plugin:proc:/proc/diskstats", "exclude space metrics on paths", CONFIG_SECTION_DISKSPACE, "exclude space metrics on paths") != -1) {
+ // old configuration, enable backwards compatibility
+ mode = SIMPLE_PATTERN_PREFIX;
+ }
+
+ excluded_mountpoints = simple_pattern_create(
+ config_get(CONFIG_SECTION_DISKSPACE, "exclude space metrics on paths", DELAULT_EXCLUDED_PATHS)
+ , NULL
+ , mode
+ );
+
+ excluded_filesystems = simple_pattern_create(
+ config_get(CONFIG_SECTION_DISKSPACE, "exclude space metrics on filesystems", DEFAULT_EXCLUDED_FILESYSTEMS)
+ , NULL
+ , SIMPLE_PATTERN_EXACT
+ );
+
+ dict_mountpoints = dictionary_create(DICTIONARY_FLAG_SINGLE_THREADED);
+ }
+
+ struct mount_point_metadata *m = dictionary_get(dict_mountpoints, mi->mount_point);
+ if(unlikely(!m)) {
+ char var_name[4096 + 1];
+ snprintfz(var_name, 4096, "plugin:proc:diskspace:%s", mi->mount_point);
+
+ int def_space = config_get_boolean_ondemand(CONFIG_SECTION_DISKSPACE, "space usage for all disks", CONFIG_BOOLEAN_AUTO);
+ int def_inodes = config_get_boolean_ondemand(CONFIG_SECTION_DISKSPACE, "inodes usage for all disks", CONFIG_BOOLEAN_AUTO);
+
+ if(unlikely(simple_pattern_matches(excluded_mountpoints, mi->mount_point))) {
+ def_space = CONFIG_BOOLEAN_NO;
+ def_inodes = CONFIG_BOOLEAN_NO;
+ }
+
+ if(unlikely(simple_pattern_matches(excluded_filesystems, mi->filesystem))) {
+ def_space = CONFIG_BOOLEAN_NO;
+ def_inodes = CONFIG_BOOLEAN_NO;
+ }
+
+ // check if the mount point is a directory #2407
+ // but only when it is enabled by default #4491
+ if(def_space != CONFIG_BOOLEAN_NO || def_inodes != CONFIG_BOOLEAN_NO) {
+ struct stat bs;
+ if(stat(mi->mount_point, &bs) == -1) {
+ error("DISKSPACE: Cannot stat() mount point '%s' (disk '%s', filesystem '%s', root '%s')."
+ , mi->mount_point
+ , disk
+ , mi->filesystem?mi->filesystem:""
+ , mi->root?mi->root:""
+ );
+ def_space = CONFIG_BOOLEAN_NO;
+ def_inodes = CONFIG_BOOLEAN_NO;
+ }
+ else {
+ if((bs.st_mode & S_IFMT) != S_IFDIR) {
+ error("DISKSPACE: Mount point '%s' (disk '%s', filesystem '%s', root '%s') is not a directory."
+ , mi->mount_point
+ , disk
+ , mi->filesystem?mi->filesystem:""
+ , mi->root?mi->root:""
+ );
+ def_space = CONFIG_BOOLEAN_NO;
+ def_inodes = CONFIG_BOOLEAN_NO;
+ }
+ }
+ }
+
+ do_space = config_get_boolean_ondemand(var_name, "space usage", def_space);
+ do_inodes = config_get_boolean_ondemand(var_name, "inodes usage", def_inodes);
+
+ struct mount_point_metadata mp = {
+ .do_space = do_space,
+ .do_inodes = do_inodes,
+ .shown_error = 0,
+ .updated = 0,
+
+ .collected = 0,
+
+ .st_space = NULL,
+ .rd_space_avail = NULL,
+ .rd_space_used = NULL,
+ .rd_space_reserved = NULL,
+
+ .st_inodes = NULL,
+ .rd_inodes_avail = NULL,
+ .rd_inodes_used = NULL,
+ .rd_inodes_reserved = NULL
+ };
+
+ m = dictionary_set(dict_mountpoints, mi->mount_point, &mp, sizeof(struct mount_point_metadata));
+ }
+
+ m->updated = 1;
+
+ if(unlikely(m->do_space == CONFIG_BOOLEAN_NO && m->do_inodes == CONFIG_BOOLEAN_NO))
+ return;
+
+ if(unlikely(mi->flags & MOUNTINFO_READONLY && !m->collected))
+ return;
+
+ struct statvfs buff_statvfs;
+ if (statvfs(mi->mount_point, &buff_statvfs) < 0) {
+ if(!m->shown_error) {
+ error("DISKSPACE: failed to statvfs() mount point '%s' (disk '%s', filesystem '%s', root '%s')"
+ , mi->mount_point
+ , disk
+ , mi->filesystem?mi->filesystem:""
+ , mi->root?mi->root:""
+ );
+ m->shown_error = 1;
+ }
+ return;
+ }
+ m->shown_error = 0;
+
+ // logic found at get_fs_usage() in coreutils
+ unsigned long bsize = (buff_statvfs.f_frsize) ? buff_statvfs.f_frsize : buff_statvfs.f_bsize;
+
+ fsblkcnt_t bavail = buff_statvfs.f_bavail;
+ fsblkcnt_t btotal = buff_statvfs.f_blocks;
+ fsblkcnt_t bavail_root = buff_statvfs.f_bfree;
+ fsblkcnt_t breserved_root = bavail_root - bavail;
+ fsblkcnt_t bused;
+ if(likely(btotal >= bavail_root))
+ bused = btotal - bavail_root;
+ else
+ bused = bavail_root - btotal;
+
+#ifdef NETDATA_INTERNAL_CHECKS
+ if(unlikely(btotal != bavail + breserved_root + bused))
+ error("DISKSPACE: disk block statistics for '%s' (disk '%s') do not sum up: total = %llu, available = %llu, reserved = %llu, used = %llu", mi->mount_point, disk, (unsigned long long)btotal, (unsigned long long)bavail, (unsigned long long)breserved_root, (unsigned long long)bused);
+#endif
+
+ // --------------------------------------------------------------------------
+
+ fsfilcnt_t favail = buff_statvfs.f_favail;
+ fsfilcnt_t ftotal = buff_statvfs.f_files;
+ fsfilcnt_t favail_root = buff_statvfs.f_ffree;
+ fsfilcnt_t freserved_root = favail_root - favail;
+ fsfilcnt_t fused = ftotal - favail_root;
+
+ if(m->do_inodes == CONFIG_BOOLEAN_AUTO && favail == (fsfilcnt_t)-1) {
+ // this file system does not support inodes reporting
+ // eg. cephfs
+ m->do_inodes = CONFIG_BOOLEAN_NO;
+ }
+
+#ifdef NETDATA_INTERNAL_CHECKS
+ if(unlikely(btotal != bavail + breserved_root + bused))
+ error("DISKSPACE: disk inode statistics for '%s' (disk '%s') do not sum up: total = %llu, available = %llu, reserved = %llu, used = %llu", mi->mount_point, disk, (unsigned long long)ftotal, (unsigned long long)favail, (unsigned long long)freserved_root, (unsigned long long)fused);
+#endif
+
+ // --------------------------------------------------------------------------
+
+ int rendered = 0;
+
+ if(m->do_space == CONFIG_BOOLEAN_YES || (m->do_space == CONFIG_BOOLEAN_AUTO && (bavail || breserved_root || bused))) {
+ if(unlikely(!m->st_space)) {
+ m->do_space = CONFIG_BOOLEAN_YES;
+ m->st_space = rrdset_find_bytype_localhost("disk_space", disk);
+ if(unlikely(!m->st_space)) {
+ char title[4096 + 1];
+ snprintfz(title, 4096, "Disk Space Usage for %s [%s]", family, mi->mount_source);
+ m->st_space = rrdset_create_localhost(
+ "disk_space"
+ , disk
+ , NULL
+ , family
+ , "disk.space"
+ , title
+ , "GB"
+ , PLUGIN_DISKSPACE_NAME
+ , NULL
+ , NETDATA_CHART_PRIO_DISKSPACE_SPACE
+ , update_every
+ , RRDSET_TYPE_STACKED
+ );
+ }
+
+ m->rd_space_avail = rrddim_add(m->st_space, "avail", NULL, (collected_number)bsize, 1024 * 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
+ m->rd_space_used = rrddim_add(m->st_space, "used", NULL, (collected_number)bsize, 1024 * 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
+ m->rd_space_reserved = rrddim_add(m->st_space, "reserved_for_root", "reserved for root", (collected_number)bsize, 1024 * 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
+ }
+ else
+ rrdset_next(m->st_space);
+
+ rrddim_set_by_pointer(m->st_space, m->rd_space_avail, (collected_number)bavail);
+ rrddim_set_by_pointer(m->st_space, m->rd_space_used, (collected_number)bused);
+ rrddim_set_by_pointer(m->st_space, m->rd_space_reserved, (collected_number)breserved_root);
+ rrdset_done(m->st_space);
+
+ rendered++;
+ }
+
+ // --------------------------------------------------------------------------
+
+ if(m->do_inodes == CONFIG_BOOLEAN_YES || (m->do_inodes == CONFIG_BOOLEAN_AUTO && (favail || freserved_root || fused))) {
+ if(unlikely(!m->st_inodes)) {
+ m->do_inodes = CONFIG_BOOLEAN_YES;
+ m->st_inodes = rrdset_find_bytype_localhost("disk_inodes", disk);
+ if(unlikely(!m->st_inodes)) {
+ char title[4096 + 1];
+ snprintfz(title, 4096, "Disk Files (inodes) Usage for %s [%s]", family, mi->mount_source);
+ m->st_inodes = rrdset_create_localhost(
+ "disk_inodes"
+ , disk
+ , NULL
+ , family
+ , "disk.inodes"
+ , title
+ , "Inodes"
+ , PLUGIN_DISKSPACE_NAME
+ , NULL
+ , NETDATA_CHART_PRIO_DISKSPACE_INODES
+ , update_every
+ , RRDSET_TYPE_STACKED
+ );
+ }
+
+ m->rd_inodes_avail = rrddim_add(m->st_inodes, "avail", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+ m->rd_inodes_used = rrddim_add(m->st_inodes, "used", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+ m->rd_inodes_reserved = rrddim_add(m->st_inodes, "reserved_for_root", "reserved for root", 1, 1, RRD_ALGORITHM_ABSOLUTE);
+ }
+ else
+ rrdset_next(m->st_inodes);
+
+ rrddim_set_by_pointer(m->st_inodes, m->rd_inodes_avail, (collected_number)favail);
+ rrddim_set_by_pointer(m->st_inodes, m->rd_inodes_used, (collected_number)fused);
+ rrddim_set_by_pointer(m->st_inodes, m->rd_inodes_reserved, (collected_number)freserved_root);
+ rrdset_done(m->st_inodes);
+
+ rendered++;
+ }
+
+ // --------------------------------------------------------------------------
+
+ if(likely(rendered))
+ m->collected++;
+}
+
+static void diskspace_main_cleanup(void *ptr) {
+ struct netdata_static_thread *static_thread = (struct netdata_static_thread *)ptr;
+ static_thread->enabled = NETDATA_MAIN_THREAD_EXITING;
+
+ info("cleaning up...");
+
+ static_thread->enabled = NETDATA_MAIN_THREAD_EXITED;
+}
+
+void *diskspace_main(void *ptr) {
+ netdata_thread_cleanup_push(diskspace_main_cleanup, ptr);
+
+ int vdo_cpu_netdata = config_get_boolean("plugin:proc", "netdata server resources", 1);
+
+ cleanup_mount_points = config_get_boolean(CONFIG_SECTION_DISKSPACE, "remove charts of unmounted disks" , cleanup_mount_points);
+
+ int update_every = (int)config_get_number(CONFIG_SECTION_DISKSPACE, "update every", localhost->rrd_update_every);
+ if(update_every < localhost->rrd_update_every)
+ update_every = localhost->rrd_update_every;
+
+ check_for_new_mountpoints_every = (int)config_get_number(CONFIG_SECTION_DISKSPACE, "check for new mount points every", check_for_new_mountpoints_every);
+ if(check_for_new_mountpoints_every < update_every)
+ check_for_new_mountpoints_every = update_every;
+
+ struct rusage thread;
+
+ usec_t duration = 0;
+ usec_t step = update_every * USEC_PER_SEC;
+ heartbeat_t hb;
+ heartbeat_init(&hb);
+ while(!netdata_exit) {
+ duration = heartbeat_monotonic_dt_to_now_usec(&hb);
+ /* usec_t hb_dt = */ heartbeat_next(&hb, step);
+
+ if(unlikely(netdata_exit)) break;
+
+
+ // --------------------------------------------------------------------------
+ // this is smart enough not to reload it every time
+
+ mountinfo_reload(0);
+
+
+ // --------------------------------------------------------------------------
+ // disk space metrics
+
+ struct mountinfo *mi;
+ for(mi = disk_mountinfo_root; mi; mi = mi->next) {
+
+ if(unlikely(mi->flags & (MOUNTINFO_IS_DUMMY | MOUNTINFO_IS_BIND)))
+ continue;
+
+ do_disk_space_stats(mi, update_every);
+ if(unlikely(netdata_exit)) break;
+ }
+
+ if(unlikely(netdata_exit)) break;
+
+ if(dict_mountpoints)
+ dictionary_get_all(dict_mountpoints, mount_point_cleanup, NULL);
+
+ if(vdo_cpu_netdata) {
+ static RRDSET *stcpu_thread = NULL, *st_duration = NULL;
+ static RRDDIM *rd_user = NULL, *rd_system = NULL, *rd_duration = NULL;
+
+ // ----------------------------------------------------------------
+
+ getrusage(RUSAGE_THREAD, &thread);
+
+ if(unlikely(!stcpu_thread)) {
+ stcpu_thread = rrdset_create_localhost(
+ "netdata"
+ , "plugin_diskspace"
+ , NULL
+ , "diskspace"
+ , NULL
+ , "NetData Disk Space Plugin CPU usage"
+ , "milliseconds/s"
+ , PLUGIN_DISKSPACE_NAME
+ , NULL
+ , NETDATA_CHART_PRIO_NETDATA_DISKSPACE
+ , update_every
+ , RRDSET_TYPE_STACKED
+ );
+
+ rd_user = rrddim_add(stcpu_thread, "user", NULL, 1, 1000, RRD_ALGORITHM_INCREMENTAL);
+ rd_system = rrddim_add(stcpu_thread, "system", NULL, 1, 1000, RRD_ALGORITHM_INCREMENTAL);
+ }
+ else
+ rrdset_next(stcpu_thread);
+
+ rrddim_set_by_pointer(stcpu_thread, rd_user, thread.ru_utime.tv_sec * 1000000ULL + thread.ru_utime.tv_usec);
+ rrddim_set_by_pointer(stcpu_thread, rd_system, thread.ru_stime.tv_sec * 1000000ULL + thread.ru_stime.tv_usec);
+ rrdset_done(stcpu_thread);
+
+ // ----------------------------------------------------------------
+
+ if(unlikely(!st_duration)) {
+ st_duration = rrdset_create_localhost(
+ "netdata"
+ , "plugin_diskspace_dt"
+ , NULL
+ , "diskspace"
+ , NULL
+ , "NetData Disk Space Plugin Duration"
+ , "milliseconds/run"
+ , PLUGIN_DISKSPACE_NAME
+ , NULL
+ , 132021
+ , update_every
+ , RRDSET_TYPE_AREA
+ );
+
+ rd_duration = rrddim_add(st_duration, "duration", NULL, 1, 1000, RRD_ALGORITHM_ABSOLUTE);
+ }
+ else
+ rrdset_next(st_duration);
+
+ rrddim_set_by_pointer(st_duration, rd_duration, duration);
+ rrdset_done(st_duration);
+
+ // ----------------------------------------------------------------
+
+ if(unlikely(netdata_exit)) break;
+ }
+ }
+
+ netdata_thread_cleanup_pop(1);
+ return NULL;
+}
diff --git a/collectors/diskspace.plugin/plugin_diskspace.h b/collectors/diskspace.plugin/plugin_diskspace.h
new file mode 100644
index 000000000..7c9df9d13
--- /dev/null
+++ b/collectors/diskspace.plugin/plugin_diskspace.h
@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_PLUGIN_PROC_DISKSPACE_H
+#define NETDATA_PLUGIN_PROC_DISKSPACE_H
+
+#include "../../daemon/common.h"
+
+
+#if (TARGET_OS == OS_LINUX)
+
+#define NETDATA_PLUGIN_HOOK_LINUX_DISKSPACE \
+ { \
+ .name = "PLUGIN[diskspace]", \
+ .config_section = CONFIG_SECTION_PLUGINS, \
+ .config_name = "diskspace", \
+ .enabled = 1, \
+ .thread = NULL, \
+ .init_routine = NULL, \
+ .start_routine = diskspace_main \
+ },
+
+extern void *diskspace_main(void *ptr);
+
+#include "../proc.plugin/plugin_proc.h"
+
+#else // (TARGET_OS == OS_LINUX)
+
+#define NETDATA_PLUGIN_HOOK_LINUX_DISKSPACE
+
+#endif // (TARGET_OS == OS_LINUX)
+
+
+
+#endif //NETDATA_PLUGIN_PROC_DISKSPACE_H