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zfs_linux_test.go
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zfs_linux_test.go
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// +build linux
package zfs
import (
"io/ioutil"
"os"
"testing"
"github.com/influxdata/telegraf/testutil"
"github.com/stretchr/testify/require"
)
const arcstatsContents = `5 1 0x01 86 4128 23617128247 12081618582809582
name type data
hits 4 5968846374
misses 4 1659178751
demand_data_hits 4 4860247322
demand_data_misses 4 501499535
demand_metadata_hits 4 708608325
demand_metadata_misses 4 156591375
prefetch_data_hits 4 367047144
prefetch_data_misses 4 974529898
prefetch_metadata_hits 4 32943583
prefetch_metadata_misses 4 26557943
mru_hits 4 301176811
mru_ghost_hits 4 47066067
mfu_hits 4 5520612438
mfu_ghost_hits 4 45784009
deleted 4 1718937704
recycle_miss 4 481222994
mutex_miss 4 20575623
evict_skip 4 14655903906543
evict_l2_cached 4 145310202998272
evict_l2_eligible 4 16345402777088
evict_l2_ineligible 4 7437226893312
hash_elements 4 36617980
hash_elements_max 4 36618318
hash_collisions 4 554145157
hash_chains 4 4187651
hash_chain_max 4 26
p 4 13963222064
c 4 16381258376
c_min 4 4194304
c_max 4 16884125696
size 4 16319887096
hdr_size 4 42567864
data_size 4 60066304
meta_size 4 1701534208
other_size 4 1661543168
anon_size 4 94720
anon_evict_data 4 0
anon_evict_metadata 4 0
mru_size 4 973099008
mru_evict_data 4 9175040
mru_evict_metadata 4 32768
mru_ghost_size 4 32768
mru_ghost_evict_data 4 0
mru_ghost_evict_metadata 4 32768
mfu_size 4 788406784
mfu_evict_data 4 50881024
mfu_evict_metadata 4 81920
mfu_ghost_size 4 0
mfu_ghost_evict_data 4 0
mfu_ghost_evict_metadata 4 0
l2_hits 4 573868618
l2_misses 4 1085309718
l2_feeds 4 12182087
l2_rw_clash 4 9610
l2_read_bytes 4 32695938336768
l2_write_bytes 4 2826774778880
l2_writes_sent 4 4267687
l2_writes_done 4 4267687
l2_writes_error 4 0
l2_writes_hdr_miss 4 164
l2_evict_lock_retry 4 5
l2_evict_reading 4 0
l2_free_on_write 4 1606914
l2_cdata_free_on_write 4 1775
l2_abort_lowmem 4 83462
l2_cksum_bad 4 393860640
l2_io_error 4 53881460
l2_size 4 2471466648576
l2_asize 4 2461690072064
l2_hdr_size 4 12854175552
l2_compress_successes 4 12184849
l2_compress_zeros 4 0
l2_compress_failures 4 0
memory_throttle_count 4 0
duplicate_buffers 4 0
duplicate_buffers_size 4 0
duplicate_reads 4 0
memory_direct_count 4 5159942
memory_indirect_count 4 3034640
arc_no_grow 4 0
arc_tempreserve 4 0
arc_loaned_bytes 4 0
arc_prune 4 114554259559
arc_meta_used 4 16259820792
arc_meta_limit 4 12663094272
arc_meta_max 4 18327165696
`
const zfetchstatsContents = `3 1 0x01 11 528 23607270446 12081656848148208
name type data
hits 4 7812959060
misses 4 4154484207
colinear_hits 4 1366368
colinear_misses 4 4153117839
stride_hits 4 7309776732
stride_misses 4 222766182
reclaim_successes 4 107788388
reclaim_failures 4 4045329451
streams_resets 4 20989756
streams_noresets 4 503182328
bogus_streams 4 0
`
const poolIoContents = `11 3 0x00 1 80 2225326830828 32953476980628
nread nwritten reads writes wtime wlentime wupdate rtime rlentime rupdate wcnt rcnt
1884160 6450688 22 978 272187126 2850519036 2263669418655 424226814 2850519036 2263669871823 0 0
`
const zilContents = `7 1 0x01 14 672 34118481334 437444452158445
name type data
zil_commit_count 4 77
zil_commit_writer_count 4 77
zil_itx_count 4 1
zil_itx_indirect_count 4 2
zil_itx_indirect_bytes 4 3
zil_itx_copied_count 4 4
zil_itx_copied_bytes 4 5
zil_itx_needcopy_count 4 6
zil_itx_needcopy_bytes 4 7
zil_itx_metaslab_normal_count 4 8
zil_itx_metaslab_normal_bytes 4 9
zil_itx_metaslab_slog_count 4 10
zil_itx_metaslab_slog_bytes 4 11
`
const fmContents = `0 1 0x01 4 192 34087340971 437562103532892
name type data
erpt-dropped 4 101
erpt-set-failed 4 202
fmri-set-failed 4 303
payload-set-failed 4 404
`
const dmuTxContents = `5 1 0x01 11 528 34103260832 437683925071438
name type data
dmu_tx_assigned 4 39321636
dmu_tx_delay 4 111
dmu_tx_error 4 222
dmu_tx_suspended 4 333
dmu_tx_group 4 444
dmu_tx_memory_reserve 4 555
dmu_tx_memory_reclaim 4 666
dmu_tx_dirty_throttle 4 777
dmu_tx_dirty_delay 4 888
dmu_tx_dirty_over_max 4 999
dmu_tx_quota 4 101010
`
const abdstatsContents = `7 1 0x01 21 1008 25476602923533 29223577332204
name type data
struct_size 4 33840
linear_cnt 4 834
linear_data_size 4 989696
scatter_cnt 4 12
scatter_data_size 4 187904
scatter_chunk_waste 4 4608
scatter_order_0 4 1
scatter_order_1 4 21
scatter_order_2 4 11
scatter_order_3 4 33
scatter_order_4 4 44
scatter_order_5 4 76
scatter_order_6 4 489
scatter_order_7 4 237483
scatter_order_8 4 233
scatter_order_9 4 4411
scatter_order_10 4 1023
scatter_page_multi_chunk 4 32122
scatter_page_multi_zone 4 9930
scatter_page_alloc_retry 4 99311
scatter_sg_table_retry 4 99221
`
var testKstatPath = os.TempDir() + "/telegraf/proc/spl/kstat/zfs"
func TestZfsPoolMetrics(t *testing.T) {
err := os.MkdirAll(testKstatPath, 0755)
require.NoError(t, err)
err = os.MkdirAll(testKstatPath+"/HOME", 0755)
require.NoError(t, err)
err = ioutil.WriteFile(testKstatPath+"/HOME/io", []byte(poolIoContents), 0644)
require.NoError(t, err)
err = ioutil.WriteFile(testKstatPath+"/arcstats", []byte(arcstatsContents), 0644)
require.NoError(t, err)
poolMetrics := getPoolMetrics()
var acc testutil.Accumulator
z := &Zfs{KstatPath: testKstatPath, KstatMetrics: []string{"arcstats"}}
err = z.Gather(&acc)
require.NoError(t, err)
require.False(t, acc.HasMeasurement("zfs_pool"))
acc.Metrics = nil
z = &Zfs{KstatPath: testKstatPath, KstatMetrics: []string{"arcstats"}, PoolMetrics: true}
err = z.Gather(&acc)
require.NoError(t, err)
//one pool, all metrics
tags := map[string]string{
"pool": "HOME",
}
acc.AssertContainsTaggedFields(t, "zfs_pool", poolMetrics, tags)
err = os.RemoveAll(os.TempDir() + "/telegraf")
require.NoError(t, err)
}
func TestZfsGeneratesMetrics(t *testing.T) {
err := os.MkdirAll(testKstatPath, 0755)
require.NoError(t, err)
err = os.MkdirAll(testKstatPath+"/HOME", 0755)
require.NoError(t, err)
err = ioutil.WriteFile(testKstatPath+"/HOME/io", []byte(""), 0644)
require.NoError(t, err)
err = ioutil.WriteFile(testKstatPath+"/arcstats", []byte(arcstatsContents), 0644)
require.NoError(t, err)
err = ioutil.WriteFile(testKstatPath+"/zfetchstats", []byte(zfetchstatsContents), 0644)
require.NoError(t, err)
err = ioutil.WriteFile(testKstatPath+"/zil", []byte(zilContents), 0644)
require.NoError(t, err)
err = ioutil.WriteFile(testKstatPath+"/fm", []byte(fmContents), 0644)
require.NoError(t, err)
err = ioutil.WriteFile(testKstatPath+"/dmu_tx", []byte(dmuTxContents), 0644)
require.NoError(t, err)
err = ioutil.WriteFile(testKstatPath+"/abdstats", []byte(abdstatsContents), 0644)
require.NoError(t, err)
intMetrics := getKstatMetricsAll()
var acc testutil.Accumulator
//one pool, all metrics
tags := map[string]string{
"pools": "HOME",
}
z := &Zfs{KstatPath: testKstatPath}
err = z.Gather(&acc)
require.NoError(t, err)
acc.AssertContainsTaggedFields(t, "zfs", intMetrics, tags)
acc.Metrics = nil
//two pools, all metrics
err = os.MkdirAll(testKstatPath+"/STORAGE", 0755)
require.NoError(t, err)
err = ioutil.WriteFile(testKstatPath+"/STORAGE/io", []byte(""), 0644)
require.NoError(t, err)
tags = map[string]string{
"pools": "HOME::STORAGE",
}
z = &Zfs{KstatPath: testKstatPath}
acc2 := testutil.Accumulator{}
err = z.Gather(&acc2)
require.NoError(t, err)
acc2.AssertContainsTaggedFields(t, "zfs", intMetrics, tags)
acc2.Metrics = nil
intMetrics = getKstatMetricsArcOnly()
//two pools, one metric
z = &Zfs{KstatPath: testKstatPath, KstatMetrics: []string{"arcstats"}}
acc3 := testutil.Accumulator{}
err = z.Gather(&acc3)
require.NoError(t, err)
acc3.AssertContainsTaggedFields(t, "zfs", intMetrics, tags)
err = os.RemoveAll(os.TempDir() + "/telegraf")
require.NoError(t, err)
}
func getKstatMetricsArcOnly() map[string]interface{} {
return map[string]interface{}{
"arcstats_hits": int64(5968846374),
"arcstats_misses": int64(1659178751),
"arcstats_demand_data_hits": int64(4860247322),
"arcstats_demand_data_misses": int64(501499535),
"arcstats_demand_metadata_hits": int64(708608325),
"arcstats_demand_metadata_misses": int64(156591375),
"arcstats_prefetch_data_hits": int64(367047144),
"arcstats_prefetch_data_misses": int64(974529898),
"arcstats_prefetch_metadata_hits": int64(32943583),
"arcstats_prefetch_metadata_misses": int64(26557943),
"arcstats_mru_hits": int64(301176811),
"arcstats_mru_ghost_hits": int64(47066067),
"arcstats_mfu_hits": int64(5520612438),
"arcstats_mfu_ghost_hits": int64(45784009),
"arcstats_deleted": int64(1718937704),
"arcstats_recycle_miss": int64(481222994),
"arcstats_mutex_miss": int64(20575623),
"arcstats_evict_skip": int64(14655903906543),
"arcstats_evict_l2_cached": int64(145310202998272),
"arcstats_evict_l2_eligible": int64(16345402777088),
"arcstats_evict_l2_ineligible": int64(7437226893312),
"arcstats_hash_elements": int64(36617980),
"arcstats_hash_elements_max": int64(36618318),
"arcstats_hash_collisions": int64(554145157),
"arcstats_hash_chains": int64(4187651),
"arcstats_hash_chain_max": int64(26),
"arcstats_p": int64(13963222064),
"arcstats_c": int64(16381258376),
"arcstats_c_min": int64(4194304),
"arcstats_c_max": int64(16884125696),
"arcstats_size": int64(16319887096),
"arcstats_hdr_size": int64(42567864),
"arcstats_data_size": int64(60066304),
"arcstats_meta_size": int64(1701534208),
"arcstats_other_size": int64(1661543168),
"arcstats_anon_size": int64(94720),
"arcstats_anon_evict_data": int64(0),
"arcstats_anon_evict_metadata": int64(0),
"arcstats_mru_size": int64(973099008),
"arcstats_mru_evict_data": int64(9175040),
"arcstats_mru_evict_metadata": int64(32768),
"arcstats_mru_ghost_size": int64(32768),
"arcstats_mru_ghost_evict_data": int64(0),
"arcstats_mru_ghost_evict_metadata": int64(32768),
"arcstats_mfu_size": int64(788406784),
"arcstats_mfu_evict_data": int64(50881024),
"arcstats_mfu_evict_metadata": int64(81920),
"arcstats_mfu_ghost_size": int64(0),
"arcstats_mfu_ghost_evict_data": int64(0),
"arcstats_mfu_ghost_evict_metadata": int64(0),
"arcstats_l2_hits": int64(573868618),
"arcstats_l2_misses": int64(1085309718),
"arcstats_l2_feeds": int64(12182087),
"arcstats_l2_rw_clash": int64(9610),
"arcstats_l2_read_bytes": int64(32695938336768),
"arcstats_l2_write_bytes": int64(2826774778880),
"arcstats_l2_writes_sent": int64(4267687),
"arcstats_l2_writes_done": int64(4267687),
"arcstats_l2_writes_error": int64(0),
"arcstats_l2_writes_hdr_miss": int64(164),
"arcstats_l2_evict_lock_retry": int64(5),
"arcstats_l2_evict_reading": int64(0),
"arcstats_l2_free_on_write": int64(1606914),
"arcstats_l2_cdata_free_on_write": int64(1775),
"arcstats_l2_abort_lowmem": int64(83462),
"arcstats_l2_cksum_bad": int64(393860640),
"arcstats_l2_io_error": int64(53881460),
"arcstats_l2_size": int64(2471466648576),
"arcstats_l2_asize": int64(2461690072064),
"arcstats_l2_hdr_size": int64(12854175552),
"arcstats_l2_compress_successes": int64(12184849),
"arcstats_l2_compress_zeros": int64(0),
"arcstats_l2_compress_failures": int64(0),
"arcstats_memory_throttle_count": int64(0),
"arcstats_duplicate_buffers": int64(0),
"arcstats_duplicate_buffers_size": int64(0),
"arcstats_duplicate_reads": int64(0),
"arcstats_memory_direct_count": int64(5159942),
"arcstats_memory_indirect_count": int64(3034640),
"arcstats_arc_no_grow": int64(0),
"arcstats_arc_tempreserve": int64(0),
"arcstats_arc_loaned_bytes": int64(0),
"arcstats_arc_prune": int64(114554259559),
"arcstats_arc_meta_used": int64(16259820792),
"arcstats_arc_meta_limit": int64(12663094272),
"arcstats_arc_meta_max": int64(18327165696),
}
}
func getKstatMetricsAll() map[string]interface{} {
otherMetrics := map[string]interface{}{
"zfetchstats_hits": int64(7812959060),
"zfetchstats_misses": int64(4154484207),
"zfetchstats_colinear_hits": int64(1366368),
"zfetchstats_colinear_misses": int64(4153117839),
"zfetchstats_stride_hits": int64(7309776732),
"zfetchstats_stride_misses": int64(222766182),
"zfetchstats_reclaim_successes": int64(107788388),
"zfetchstats_reclaim_failures": int64(4045329451),
"zfetchstats_streams_resets": int64(20989756),
"zfetchstats_streams_noresets": int64(503182328),
"zfetchstats_bogus_streams": int64(0),
"zil_commit_count": int64(77),
"zil_commit_writer_count": int64(77),
"zil_itx_count": int64(1),
"zil_itx_indirect_count": int64(2),
"zil_itx_indirect_bytes": int64(3),
"zil_itx_copied_count": int64(4),
"zil_itx_copied_bytes": int64(5),
"zil_itx_needcopy_count": int64(6),
"zil_itx_needcopy_bytes": int64(7),
"zil_itx_metaslab_normal_count": int64(8),
"zil_itx_metaslab_normal_bytes": int64(9),
"zil_itx_metaslab_slog_count": int64(10),
"zil_itx_metaslab_slog_bytes": int64(11),
"fm_erpt-dropped": int64(101),
"fm_erpt-set-failed": int64(202),
"fm_fmri-set-failed": int64(303),
"fm_payload-set-failed": int64(404),
"dmu_tx_assigned": int64(39321636),
"dmu_tx_delay": int64(111),
"dmu_tx_error": int64(222),
"dmu_tx_suspended": int64(333),
"dmu_tx_group": int64(444),
"dmu_tx_memory_reserve": int64(555),
"dmu_tx_memory_reclaim": int64(666),
"dmu_tx_dirty_throttle": int64(777),
"dmu_tx_dirty_delay": int64(888),
"dmu_tx_dirty_over_max": int64(999),
"dmu_tx_quota": int64(101010),
"abdstats_struct_size": int64(33840),
"abdstats_linear_cnt": int64(834),
"abdstats_linear_data_size": int64(989696),
"abdstats_scatter_cnt": int64(12),
"abdstats_scatter_data_size": int64(187904),
"abdstats_scatter_chunk_waste": int64(4608),
"abdstats_scatter_order_0": int64(1),
"abdstats_scatter_order_1": int64(21),
"abdstats_scatter_order_2": int64(11),
"abdstats_scatter_order_3": int64(33),
"abdstats_scatter_order_4": int64(44),
"abdstats_scatter_order_5": int64(76),
"abdstats_scatter_order_6": int64(489),
"abdstats_scatter_order_7": int64(237483),
"abdstats_scatter_order_8": int64(233),
"abdstats_scatter_order_9": int64(4411),
"abdstats_scatter_order_10": int64(1023),
"abdstats_scatter_page_multi_chunk": int64(32122),
"abdstats_scatter_page_multi_zone": int64(9930),
"abdstats_scatter_page_alloc_retry": int64(99311),
"abdstats_scatter_sg_table_retry": int64(99221),
}
arcMetrics := getKstatMetricsArcOnly()
for k, v := range otherMetrics {
arcMetrics[k] = v
}
return arcMetrics
}
func getPoolMetrics() map[string]interface{} {
return map[string]interface{}{
"nread": int64(1884160),
"nwritten": int64(6450688),
"reads": int64(22),
"writes": int64(978),
"wtime": int64(272187126),
"wlentime": int64(2850519036),
"wupdate": int64(2263669418655),
"rtime": int64(424226814),
"rlentime": int64(2850519036),
"rupdate": int64(2263669871823),
"wcnt": int64(0),
"rcnt": int64(0),
}
}