1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
|
# -*- coding: utf-8 -*-
# Description: mdstat netdata python.d module
# Author: l2isbad
import re
from collections import defaultdict
from bases.FrameworkServices.SimpleService import SimpleService
priority = 60000
retries = 60
update_every = 1
ORDER = ['mdstat_health']
CHARTS = {
'mdstat_health': {
'options': [None, 'Faulty Devices In MD', 'failed disks', 'health', 'md.health', 'line'],
'lines': list()
}
}
OPERATIONS = ('check', 'resync', 'reshape', 'recovery', 'finish', 'speed')
RE_DISKS = re.compile(r' (?P<array>[a-zA-Z_0-9]+) : active .+\['
r'(?P<total_disks>[0-9]+)/'
r'(?P<inuse_disks>[0-9]+)\]')
RE_STATUS = re.compile(r' (?P<array>[a-zA-Z_0-9]+) : active .+ '
r'(?P<operation>[a-z]+) =[ ]{1,2}'
r'(?P<operation_status>[0-9.]+).+finish='
r'(?P<finish>([0-9.]+))min speed='
r'(?P<speed>[0-9]+)')
def md_charts(md):
order = ['{0}_disks'.format(md.name),
'{0}_operation'.format(md.name),
'{0}_finish'.format(md.name),
'{0}_speed'.format(md.name)
]
charts = dict()
charts[order[0]] = {
'options': [None, 'Disks Stats', 'disks', md.name, 'md.disks', 'stacked'],
'lines': [
['{0}_total_disks'.format(md.name), 'total', 'absolute'],
['{0}_inuse_disks'.format(md.name), 'inuse', 'absolute']
]
}
charts['_'.join([md.name, 'operation'])] = {
'options': [None, 'Current Status', 'percent', md.name, 'md.status', 'line'],
'lines': [
['{0}_resync'.format(md.name), 'resync', 'absolute', 1, 100],
['{0}_recovery'.format(md.name), 'recovery', 'absolute', 1, 100],
['{0}_reshape'.format(md.name), 'reshape', 'absolute', 1, 100],
['{0}_check'.format(md.name), 'check', 'absolute', 1, 100]
]
}
charts['_'.join([md.name, 'finish'])] = {
'options': [None, 'Approximate Time Until Finish', 'seconds', md.name, 'md.rate', 'line'],
'lines': [
['{0}_finish'.format(md.name), 'finish in', 'absolute', 1, 1000]
]
}
charts['_'.join([md.name, 'speed'])] = {
'options': [None, 'Operation Speed', 'KB/s', md.name, 'md.rate', 'line'],
'lines': [
['{0}_speed'.format(md.name), 'speed', 'absolute', 1, 1000]
]
}
return order, charts
class MD:
def __init__(self, name, stats):
self.name = name
self.stats = stats
def update_stats(self, stats):
self.stats = stats
def data(self):
stats = dict(('_'.join([self.name, k]), v) for k, v in self.stats.items())
stats['{0}_health'.format(self.name)] = int(self.stats['total_disks']) - int(self.stats['inuse_disks'])
return stats
class Service(SimpleService):
def __init__(self, configuration=None, name=None):
SimpleService.__init__(self, configuration=configuration, name=name)
self.order = ORDER
self.definitions = CHARTS
self.mds = dict()
def check(self):
arrays = find_arrays(self._get_raw_data())
if not arrays:
self.error('Failed to read data from /proc/mdstat or there is no active arrays')
return None
return True
@staticmethod
def _get_raw_data():
"""
Read data from /proc/mdstat
:return: str
"""
try:
with open('/proc/mdstat', 'rt') as proc_mdstat:
return proc_mdstat.readlines() or None
except (OSError, IOError):
return None
def get_data(self):
"""
Parse data from _get_raw_data()
:return: dict
"""
arrays = find_arrays(self._get_raw_data())
if not arrays:
return None
data = dict()
for array, values in arrays.items():
if array not in self.mds:
md = MD(array, values)
self.mds[md.name] = md
self.create_new_array_charts(md)
else:
md = self.mds[array]
md.update_stats(values)
data.update(md.data())
return data
def create_new_array_charts(self, md):
order, charts = md_charts(md)
self.charts['mdstat_health'].add_dimension(['{0}_health'.format(md.name), md.name])
for chart_name in order:
params = [chart_name] + charts[chart_name]['options']
dimensions = charts[chart_name]['lines']
new_chart = self.charts.add_chart(params)
for dimension in dimensions:
new_chart.add_dimension(dimension)
def find_arrays(raw_data):
if raw_data is None:
return None
data = defaultdict(str)
counter = 1
for row in (elem.strip() for elem in raw_data):
if not row:
counter += 1
continue
data[counter] = ' '.join([data[counter], row])
arrays = dict()
for value in data.values():
match = RE_DISKS.search(value)
if not match:
continue
match = match.groupdict()
array = match.pop('array')
arrays[array] = match
for operation in OPERATIONS:
arrays[array][operation] = 0
match = RE_STATUS.search(value)
if match:
match = match.groupdict()
if match['operation'] in OPERATIONS:
arrays[array]['operation'] = match['operation']
arrays[array][match['operation']] = float(match['operation_status']) * 100
arrays[array]['finish'] = float(match['finish']) * 1000 * 60
arrays[array]['speed'] = float(match['speed']) * 1000
return arrays or None
|
