mirror of
https://github.com/prometheus/node_exporter.git
synced 2025-08-20 18:33:52 -07:00
read contents of objset file (#1632)
* added objread functionality Signed-off-by: Sudharshann D <sudhar287@gmail.com>
This commit is contained in:
Sudhar287
GitHub
parent
f87e566df9
commit
6807e5319b
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@ -3584,6 +3584,42 @@ node_zfs_zil_zil_itx_needcopy_bytes 1.8446744073709537e+19
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# HELP node_zfs_zil_zil_itx_needcopy_count kstat.zfs.misc.zil.zil_itx_needcopy_count
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# TYPE node_zfs_zil_zil_itx_needcopy_count untyped
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node_zfs_zil_zil_itx_needcopy_count 0
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# HELP node_zfs_zpool_dataset_nread kstat.zfs.misc.objset.nread
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# TYPE node_zfs_zpool_dataset_nread untyped
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node_zfs_zpool_dataset_nread{dataset="pool1",zpool="pool1"} 0
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node_zfs_zpool_dataset_nread{dataset="pool1/dataset1",zpool="pool1"} 28
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node_zfs_zpool_dataset_nread{dataset="poolz1",zpool="poolz1"} 0
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node_zfs_zpool_dataset_nread{dataset="poolz1/dataset1",zpool="poolz1"} 28
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# HELP node_zfs_zpool_dataset_nunlinked kstat.zfs.misc.objset.nunlinked
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# TYPE node_zfs_zpool_dataset_nunlinked untyped
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node_zfs_zpool_dataset_nunlinked{dataset="pool1",zpool="pool1"} 0
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node_zfs_zpool_dataset_nunlinked{dataset="pool1/dataset1",zpool="pool1"} 3
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node_zfs_zpool_dataset_nunlinked{dataset="poolz1",zpool="poolz1"} 0
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node_zfs_zpool_dataset_nunlinked{dataset="poolz1/dataset1",zpool="poolz1"} 14
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# HELP node_zfs_zpool_dataset_nunlinks kstat.zfs.misc.objset.nunlinks
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# TYPE node_zfs_zpool_dataset_nunlinks untyped
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node_zfs_zpool_dataset_nunlinks{dataset="pool1",zpool="pool1"} 0
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node_zfs_zpool_dataset_nunlinks{dataset="pool1/dataset1",zpool="pool1"} 3
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node_zfs_zpool_dataset_nunlinks{dataset="poolz1",zpool="poolz1"} 0
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node_zfs_zpool_dataset_nunlinks{dataset="poolz1/dataset1",zpool="poolz1"} 14
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# HELP node_zfs_zpool_dataset_nwritten kstat.zfs.misc.objset.nwritten
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# TYPE node_zfs_zpool_dataset_nwritten untyped
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node_zfs_zpool_dataset_nwritten{dataset="pool1",zpool="pool1"} 0
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node_zfs_zpool_dataset_nwritten{dataset="pool1/dataset1",zpool="pool1"} 12302
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node_zfs_zpool_dataset_nwritten{dataset="poolz1",zpool="poolz1"} 0
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node_zfs_zpool_dataset_nwritten{dataset="poolz1/dataset1",zpool="poolz1"} 32806
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# HELP node_zfs_zpool_dataset_reads kstat.zfs.misc.objset.reads
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# TYPE node_zfs_zpool_dataset_reads untyped
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node_zfs_zpool_dataset_reads{dataset="pool1",zpool="pool1"} 0
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node_zfs_zpool_dataset_reads{dataset="pool1/dataset1",zpool="pool1"} 2
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node_zfs_zpool_dataset_reads{dataset="poolz1",zpool="poolz1"} 0
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node_zfs_zpool_dataset_reads{dataset="poolz1/dataset1",zpool="poolz1"} 2
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# HELP node_zfs_zpool_dataset_writes kstat.zfs.misc.objset.writes
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# TYPE node_zfs_zpool_dataset_writes untyped
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node_zfs_zpool_dataset_writes{dataset="pool1",zpool="pool1"} 0
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node_zfs_zpool_dataset_writes{dataset="pool1/dataset1",zpool="pool1"} 4
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node_zfs_zpool_dataset_writes{dataset="poolz1",zpool="poolz1"} 0
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node_zfs_zpool_dataset_writes{dataset="poolz1/dataset1",zpool="poolz1"} 10
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# HELP node_zfs_zpool_nread kstat.zfs.misc.io.nread
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# TYPE node_zfs_zpool_nread untyped
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node_zfs_zpool_nread{zpool="pool1"} 1.88416e+06
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@ -3677,6 +3677,42 @@ node_zfs_zil_zil_itx_needcopy_bytes 1.8446744073709537e+19
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# HELP node_zfs_zil_zil_itx_needcopy_count kstat.zfs.misc.zil.zil_itx_needcopy_count
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# TYPE node_zfs_zil_zil_itx_needcopy_count untyped
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node_zfs_zil_zil_itx_needcopy_count 0
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# HELP node_zfs_zpool_dataset_nread kstat.zfs.misc.objset.nread
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# TYPE node_zfs_zpool_dataset_nread untyped
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node_zfs_zpool_dataset_nread{dataset="pool1",zpool="pool1"} 0
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node_zfs_zpool_dataset_nread{dataset="pool1/dataset1",zpool="pool1"} 28
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node_zfs_zpool_dataset_nread{dataset="poolz1",zpool="poolz1"} 0
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node_zfs_zpool_dataset_nread{dataset="poolz1/dataset1",zpool="poolz1"} 28
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# HELP node_zfs_zpool_dataset_nunlinked kstat.zfs.misc.objset.nunlinked
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# TYPE node_zfs_zpool_dataset_nunlinked untyped
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node_zfs_zpool_dataset_nunlinked{dataset="pool1",zpool="pool1"} 0
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node_zfs_zpool_dataset_nunlinked{dataset="pool1/dataset1",zpool="pool1"} 3
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node_zfs_zpool_dataset_nunlinked{dataset="poolz1",zpool="poolz1"} 0
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node_zfs_zpool_dataset_nunlinked{dataset="poolz1/dataset1",zpool="poolz1"} 14
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# HELP node_zfs_zpool_dataset_nunlinks kstat.zfs.misc.objset.nunlinks
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# TYPE node_zfs_zpool_dataset_nunlinks untyped
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node_zfs_zpool_dataset_nunlinks{dataset="pool1",zpool="pool1"} 0
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node_zfs_zpool_dataset_nunlinks{dataset="pool1/dataset1",zpool="pool1"} 3
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node_zfs_zpool_dataset_nunlinks{dataset="poolz1",zpool="poolz1"} 0
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node_zfs_zpool_dataset_nunlinks{dataset="poolz1/dataset1",zpool="poolz1"} 14
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# HELP node_zfs_zpool_dataset_nwritten kstat.zfs.misc.objset.nwritten
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# TYPE node_zfs_zpool_dataset_nwritten untyped
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node_zfs_zpool_dataset_nwritten{dataset="pool1",zpool="pool1"} 0
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node_zfs_zpool_dataset_nwritten{dataset="pool1/dataset1",zpool="pool1"} 12302
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node_zfs_zpool_dataset_nwritten{dataset="poolz1",zpool="poolz1"} 0
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node_zfs_zpool_dataset_nwritten{dataset="poolz1/dataset1",zpool="poolz1"} 32806
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# HELP node_zfs_zpool_dataset_reads kstat.zfs.misc.objset.reads
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# TYPE node_zfs_zpool_dataset_reads untyped
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node_zfs_zpool_dataset_reads{dataset="pool1",zpool="pool1"} 0
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node_zfs_zpool_dataset_reads{dataset="pool1/dataset1",zpool="pool1"} 2
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node_zfs_zpool_dataset_reads{dataset="poolz1",zpool="poolz1"} 0
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node_zfs_zpool_dataset_reads{dataset="poolz1/dataset1",zpool="poolz1"} 2
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# HELP node_zfs_zpool_dataset_writes kstat.zfs.misc.objset.writes
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# TYPE node_zfs_zpool_dataset_writes untyped
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node_zfs_zpool_dataset_writes{dataset="pool1",zpool="pool1"} 0
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node_zfs_zpool_dataset_writes{dataset="pool1/dataset1",zpool="pool1"} 4
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node_zfs_zpool_dataset_writes{dataset="poolz1",zpool="poolz1"} 0
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node_zfs_zpool_dataset_writes{dataset="poolz1/dataset1",zpool="poolz1"} 10
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# HELP node_zfs_zpool_nread kstat.zfs.misc.io.nread
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# TYPE node_zfs_zpool_nread untyped
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node_zfs_zpool_nread{zpool="pool1"} 1.88416e+06
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9
collector/fixtures/proc/spl/kstat/zfs/pool1/objset-1
Normal file
9
collector/fixtures/proc/spl/kstat/zfs/pool1/objset-1
Normal file
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@ -0,0 +1,9 @@
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23 1 0x01 7 2160 221578688875 6665999035587
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name type data
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dataset_name 7 pool1
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writes 4 0
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nwritten 4 0
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reads 4 0
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nread 4 0
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nunlinks 4 0
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nunlinked 4 0
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9
collector/fixtures/proc/spl/kstat/zfs/pool1/objset-2
Normal file
9
collector/fixtures/proc/spl/kstat/zfs/pool1/objset-2
Normal file
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@ -0,0 +1,9 @@
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24 1 0x01 7 2160 221611904716 7145015038451
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name type data
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dataset_name 7 pool1/dataset1
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writes 4 4
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nwritten 4 12302
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reads 4 2
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nread 4 28
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nunlinks 4 3
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nunlinked 4 3
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9
collector/fixtures/proc/spl/kstat/zfs/poolz1/objset-1
Normal file
9
collector/fixtures/proc/spl/kstat/zfs/poolz1/objset-1
Normal file
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@ -0,0 +1,9 @@
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30 1 0x01 7 2160 217993779684 2621674546179
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name type data
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dataset_name 7 poolz1
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writes 4 0
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nwritten 4 0
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reads 4 0
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nread 4 0
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nunlinks 4 0
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nunlinked 4 0
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9
collector/fixtures/proc/spl/kstat/zfs/poolz1/objset-2
Normal file
9
collector/fixtures/proc/spl/kstat/zfs/poolz1/objset-2
Normal file
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@ -0,0 +1,9 @@
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31 1 0x01 7 2160 218133979890 3024169078920
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name type data
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dataset_name 7 poolz1/dataset1
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writes 4 10
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nwritten 4 32806
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reads 4 2
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nread 4 28
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nunlinks 4 14
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nunlinked 4 14
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@ -34,17 +34,19 @@ func init() {
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}
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type zfsCollector struct {
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linuxProcpathBase string
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linuxZpoolIoPath string
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linuxPathMap map[string]string
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logger log.Logger
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linuxProcpathBase string
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linuxZpoolIoPath string
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linuxZpoolObjsetPath string
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linuxPathMap map[string]string
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logger log.Logger
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}
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// NewZFSCollector returns a new Collector exposing ZFS statistics.
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func NewZFSCollector(logger log.Logger) (Collector, error) {
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return &zfsCollector{
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linuxProcpathBase: "spl/kstat/zfs",
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linuxZpoolIoPath: "/*/io",
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linuxProcpathBase: "spl/kstat/zfs",
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linuxZpoolIoPath: "/*/io",
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linuxZpoolObjsetPath: "/*/objset-*",
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linuxPathMap: map[string]string{
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"zfs_abd": "abdstats",
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"zfs_arc": "arcstats",
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@ -113,3 +115,20 @@ func (c *zfsCollector) constPoolMetric(poolName string, sysctl zfsSysctl, value
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poolName,
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)
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}
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func (c *zfsCollector) constPoolObjsetMetric(poolName string, datasetName string, sysctl zfsSysctl, value uint64) prometheus.Metric {
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metricName := sysctl.metricName()
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return prometheus.MustNewConstMetric(
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prometheus.NewDesc(
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prometheus.BuildFQName(namespace, "zfs_zpool_dataset", metricName),
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string(sysctl),
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[]string{"zpool", "dataset"},
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nil,
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),
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prometheus.UntypedValue,
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float64(value),
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poolName,
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datasetName,
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)
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}
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@ -90,6 +90,31 @@ func (c *zfsCollector) updatePoolStats(ch chan<- prometheus.Metric) error {
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}
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}
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zpoolObjsetPaths, err := filepath.Glob(procFilePath(filepath.Join(c.linuxProcpathBase, c.linuxZpoolObjsetPath)))
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if err != nil {
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return err
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}
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if zpoolObjsetPaths == nil {
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return nil
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}
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for _, zpoolPath := range zpoolObjsetPaths {
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file, err := os.Open(zpoolPath)
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if err != nil {
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// this file should exist, but there is a race where an exporting pool can remove the files -- ok to ignore
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level.Debug(c.logger).Log("msg", "Cannot open file for reading", "path", zpoolPath)
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return errZFSNotAvailable
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}
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err = c.parsePoolObjsetFile(file, zpoolPath, func(poolName string, datasetName string, s zfsSysctl, v uint64) {
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ch <- c.constPoolObjsetMetric(poolName, datasetName, s, v)
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})
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file.Close()
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if err != nil {
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return err
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}
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}
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return nil
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}
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@ -168,3 +193,43 @@ func (c *zfsCollector) parsePoolProcfsFile(reader io.Reader, zpoolPath string, h
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return scanner.Err()
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}
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func (c *zfsCollector) parsePoolObjsetFile(reader io.Reader, zpoolPath string, handler func(string, string, zfsSysctl, uint64)) error {
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scanner := bufio.NewScanner(reader)
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parseLine := false
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var zpoolName, datasetName string
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for scanner.Scan() {
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parts := strings.Fields(scanner.Text())
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if !parseLine && len(parts) == 3 && parts[0] == "name" && parts[1] == "type" && parts[2] == "data" {
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parseLine = true
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continue
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}
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if !parseLine || len(parts) < 3 {
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continue
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}
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if parts[0] == "dataset_name" {
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zpoolPathElements := strings.Split(zpoolPath, "/")
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pathLen := len(zpoolPathElements)
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zpoolName = zpoolPathElements[pathLen-2]
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datasetName = parts[2]
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continue
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}
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if parts[1] == kstatDataUint64 {
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key := fmt.Sprintf("kstat.zfs.misc.objset.%s", parts[0])
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value, err := strconv.ParseUint(parts[2], 10, 64)
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if err != nil {
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return fmt.Errorf("could not parse expected integer value for %q", key)
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}
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handler(zpoolName, datasetName, zfsSysctl(key), value)
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}
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}
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if !parseLine {
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return fmt.Errorf("did not parse a single %s %s metric", zpoolName, datasetName)
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}
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return scanner.Err()
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}
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@ -311,6 +311,46 @@ func TestZpoolParsing(t *testing.T) {
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}
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}
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func TestZpoolObjsetParsing(t *testing.T) {
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zpoolPaths, err := filepath.Glob("fixtures/proc/spl/kstat/zfs/*/objset-*")
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if err != nil {
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t.Fatal(err)
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}
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c := zfsCollector{}
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if err != nil {
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t.Fatal(err)
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}
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handlerCalled := false
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for _, zpoolPath := range zpoolPaths {
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file, err := os.Open(zpoolPath)
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if err != nil {
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t.Fatal(err)
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}
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err = c.parsePoolObjsetFile(file, zpoolPath, func(poolName string, datasetName string, s zfsSysctl, v uint64) {
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if s != zfsSysctl("kstat.zfs.misc.objset.writes") {
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return
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}
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handlerCalled = true
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if v != uint64(0) && v != uint64(4) && v != uint64(10) {
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t.Fatalf("Incorrect value parsed from procfs data %v", v)
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}
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})
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file.Close()
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if err != nil {
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t.Fatal(err)
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}
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}
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if !handlerCalled {
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t.Fatal("Zpool parsing handler was not called for some expected sysctls")
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}
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}
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func TestAbdstatsParsing(t *testing.T) {
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abdstatsFile, err := os.Open("fixtures/proc/spl/kstat/zfs/abdstats")
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if err != nil {
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