bundlewrap/bundles/zfs/files/telegraf-per-dataset

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#!/usr/bin/env python3
from subprocess import check_output
pools = check_output(
['/usr/sbin/zpool', 'list', '-Hpo', 'name,allocated,size'],
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env={
'LC_ALL': 'C',
},
).decode('UTF-8')
datasets = check_output(
['/usr/sbin/zfs', 'list', '-Hpo', 'name,usedbydataset,usedsnap,compressratio'],
env={
'LC_ALL': 'C',
},
).decode('UTF-8')
zpools = {}
for line in pools.splitlines():
name, used, total = line.split()
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zpools[name] = {
'used': used,
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'total': total,
}
print('zfs_pool,pool={} size={}i,used={}i'.format(name, total, used))
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for line in datasets.splitlines():
name, used, usedsnap, compressratio = line.split()
pool = name.split('/')[0]
if '/' not in name:
# covered by pool metrics above
continue
if pool not in zpools:
raise Exception('BUG: {} in datasets, but {} not in pools'.format(name, pool))
if compressratio[-1] == 'x':
compressratio = compressratio[:-1]
print('zfs_dataset,pool={},dataset={} used={}i,usedsnap={}i,compressratio={}'.format(
pool,
name,
used,
usedsnap,
compressratio,
))