mirror of
https://github.com/librenms/librenms-agent.git
synced 2024-05-09 09:54:52 +00:00
117 lines
5.6 KiB
Python
117 lines
5.6 KiB
Python
#!/usr/local/bin/python3
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# FreeNAS 11.1 not support #!/usr/bin/env python3
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import json
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import subprocess
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def percent(numerator, denominator, default=0):
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try:
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return numerator / denominator * 100
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except ZeroDivisionError:
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return default
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def main(args):
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p = subprocess.run(['/sbin/sysctl', '-q', 'kstat.zfs', 'vfs.zfs'], stdout=subprocess.PIPE, universal_newlines=True)
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if p.returncode != 0:
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return p.returncode
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def chomp(line):
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bits = [b.strip() for b in line.split(':')]
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return bits[0], int(bits[1])
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stats = dict(chomp(l) for l in p.stdout.splitlines())
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if 'kstat.zfs.misc.arcstats.recycle_miss' not in stats:
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stats['kstat.zfs.misc.arcstats.recycle_miss'] = 0
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output = dict()
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# ARC misc
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output['deleted'] = stats['kstat.zfs.misc.arcstats.deleted']
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output['evict_skip'] = stats['kstat.zfs.misc.arcstats.evict_skip']
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output['mutex_skip'] = stats['kstat.zfs.misc.arcstats.mutex_miss']
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output['recycle_miss'] = stats['kstat.zfs.misc.arcstats.recycle_miss']
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# ARC size
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output['target_size_per'] = stats['kstat.zfs.misc.arcstats.c'] / stats['kstat.zfs.misc.arcstats.c_max'] * 100
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output['arc_size_per'] = stats['kstat.zfs.misc.arcstats.size'] / stats['kstat.zfs.misc.arcstats.c_max'] * 100
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output['target_size_arat'] = stats['kstat.zfs.misc.arcstats.c'] / stats['kstat.zfs.misc.arcstats.c_max']
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output['min_size_per'] = stats['kstat.zfs.misc.arcstats.c_min'] / stats['kstat.zfs.misc.arcstats.c_max'] * 100
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output['arc_size'] = stats['kstat.zfs.misc.arcstats.size']
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output['target_size_max'] = stats['kstat.zfs.misc.arcstats.c_max']
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output['target_size_min'] = stats['kstat.zfs.misc.arcstats.c_min']
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output['target_size'] = stats['kstat.zfs.misc.arcstats.c']
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# ARC size breakdown
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output['mfu_size'] = stats['kstat.zfs.misc.arcstats.size'] - stats['kstat.zfs.misc.arcstats.p']
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output['p'] = stats['kstat.zfs.misc.arcstats.p']
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output['rec_used_per'] = stats['kstat.zfs.misc.arcstats.p'] / stats['kstat.zfs.misc.arcstats.size'] * 100
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output['freq_used_per'] = output['mfu_size'] / stats['kstat.zfs.misc.arcstats.size'] * 100
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# ARC misc efficiency stats
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output['arc_hits'] = stats['kstat.zfs.misc.arcstats.hits']
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output['arc_misses'] = stats['kstat.zfs.misc.arcstats.misses']
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output['demand_data_hits'] = stats['kstat.zfs.misc.arcstats.demand_data_hits']
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output['demand_data_misses'] = stats['kstat.zfs.misc.arcstats.demand_data_misses']
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output['demand_meta_hits'] = stats['kstat.zfs.misc.arcstats.demand_metadata_hits']
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output['demand_meta_misses'] = stats['kstat.zfs.misc.arcstats.demand_metadata_misses']
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output['mfu_ghost_hits'] = stats['kstat.zfs.misc.arcstats.mfu_ghost_hits']
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output['mfu_hits'] = stats['kstat.zfs.misc.arcstats.mfu_hits']
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output['mru_ghost_hits'] = stats['kstat.zfs.misc.arcstats.mru_ghost_hits']
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output['mru_hits'] = stats['kstat.zfs.misc.arcstats.mru_hits']
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output['pre_data_hits'] = stats['kstat.zfs.misc.arcstats.prefetch_data_hits']
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output['pre_data_misses'] = stats['kstat.zfs.misc.arcstats.prefetch_data_misses']
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output['pre_meta_hits'] = stats['kstat.zfs.misc.arcstats.prefetch_metadata_hits']
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output['pre_meta_misses'] = stats['kstat.zfs.misc.arcstats.prefetch_metadata_misses']
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output['anon_hits'] = output['arc_hits'] - (output['mfu_hits'] + output['mru_hits'] + output['mfu_ghost_hits'] + output['mru_ghost_hits'])
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output['arc_accesses_total'] = output['arc_hits'] + output['arc_misses']
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output['demand_data_total'] = output['demand_data_hits'] + output['demand_data_misses']
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output['pre_data_total'] = output['pre_data_hits'] + output['pre_data_misses']
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output['real_hits'] = output['mfu_hits'] + output['mru_hits']
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# ARC efficiency percents
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output['cache_hits_per'] = percent(output['arc_hits'], output['arc_accesses_total'])
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output['cache_miss_per'] = percent(output['arc_misses'], output['arc_accesses_total'])
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output['actual_hit_per'] = percent(output['real_hits'], output['arc_accesses_total'])
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output['data_demand_per'] = percent(output['demand_data_hits'], output['demand_data_total'])
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output['data_pre_per'] = percent(output['pre_data_hits'], output['pre_data_total'])
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output['anon_hits_per'] = percent(output['anon_hits'], output['arc_hits'])
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output['mru_per'] = percent(output['mru_hits'], output['arc_hits'])
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output['mfu_per'] = percent(output['mfu_hits'], output['arc_hits'])
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output['mru_ghost_per'] = percent(output['mru_ghost_hits'], output['arc_hits'])
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output['mfu_ghost_per'] = percent(output['mfu_ghost_hits'], output['arc_hits'])
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output['demand_hits_per'] = percent(output['demand_data_hits'], output['arc_hits'])
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output['pre_hits_per'] = percent(output['pre_data_hits'], output['arc_hits'])
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output['meta_hits_per'] = percent(output['demand_meta_hits'], output['arc_hits'])
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output['pre_meta_hits_per'] = percent(output['pre_meta_hits'], output['arc_hits'])
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output['demand_misses_per'] = percent(output['demand_data_misses'], output['arc_misses'])
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output['pre_misses_per'] = percent(output['pre_data_misses'], output['arc_misses'])
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output['meta_misses_per'] = percent(output['demand_meta_misses'], output['arc_misses'])
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output['pre_meta_misses_per'] = percent(output['pre_meta_misses'], output['arc_misses'])
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# pools
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p = subprocess.run(['/sbin/zpool', 'list', '-pH'], stdout=subprocess.PIPE, universal_newlines=True)
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if p.returncode != 0:
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return p.returncode
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output['pools'] = []
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fields = ['name', 'size', 'alloc', 'free', 'expandsz', 'frag', 'cap', 'dedup']
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for l in p.stdout.splitlines():
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p = dict(zip(fields, l.split('\t')))
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if p['expandsz'] == '-':
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p['expandsz'] = 0
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p['frag'] = p['frag'].rstrip('%')
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if p['frag'] == '-':
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p['frag'] = 0
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p['dedup'] = p['dedup'].rstrip('x')
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output['pools'].append(p)
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print(json.dumps(output))
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return 0
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if __name__ == '__main__':
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import sys
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sys.exit(main(sys.argv[1:]))
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