feat: added suspended as a node_zfs_zpool_state (#2449)

Signed-off-by: Pablo Caderno <kaderno@gmail.com>

collector/fixtures/e2e-64k-page-output.txt

@@ -4165,16 +4165,25 @@ node_zfs_zpool_rupdate{zpool="poolz1"} 1.10734831944501e+14
 # HELP node_zfs_zpool_state kstat.zfs.misc.state
 # TYPE node_zfs_zpool_state gauge
 node_zfs_zpool_state{state="degraded",zpool="pool1"} 0
+node_zfs_zpool_state{state="degraded",zpool="pool2"} 0
 node_zfs_zpool_state{state="degraded",zpool="poolz1"} 1
 node_zfs_zpool_state{state="faulted",zpool="pool1"} 0
+node_zfs_zpool_state{state="faulted",zpool="pool2"} 0
 node_zfs_zpool_state{state="faulted",zpool="poolz1"} 0
 node_zfs_zpool_state{state="offline",zpool="pool1"} 0
+node_zfs_zpool_state{state="offline",zpool="pool2"} 0
 node_zfs_zpool_state{state="offline",zpool="poolz1"} 0
 node_zfs_zpool_state{state="online",zpool="pool1"} 1
+node_zfs_zpool_state{state="online",zpool="pool2"} 0
 node_zfs_zpool_state{state="online",zpool="poolz1"} 0
 node_zfs_zpool_state{state="removed",zpool="pool1"} 0
+node_zfs_zpool_state{state="removed",zpool="pool2"} 0
 node_zfs_zpool_state{state="removed",zpool="poolz1"} 0
+node_zfs_zpool_state{state="suspended",zpool="pool1"} 0
+node_zfs_zpool_state{state="suspended",zpool="pool2"} 1
+node_zfs_zpool_state{state="suspended",zpool="poolz1"} 0
 node_zfs_zpool_state{state="unavail",zpool="pool1"} 0
+node_zfs_zpool_state{state="unavail",zpool="pool2"} 0
 node_zfs_zpool_state{state="unavail",zpool="poolz1"} 0
 # HELP node_zfs_zpool_wcnt kstat.zfs.misc.io.wcnt
 # TYPE node_zfs_zpool_wcnt untyped

collector/fixtures/e2e-output.txt

@@ -4187,16 +4187,25 @@ node_zfs_zpool_rupdate{zpool="poolz1"} 1.10734831944501e+14
 # HELP node_zfs_zpool_state kstat.zfs.misc.state
 # TYPE node_zfs_zpool_state gauge
 node_zfs_zpool_state{state="degraded",zpool="pool1"} 0
+node_zfs_zpool_state{state="degraded",zpool="pool2"} 0
 node_zfs_zpool_state{state="degraded",zpool="poolz1"} 1
 node_zfs_zpool_state{state="faulted",zpool="pool1"} 0
+node_zfs_zpool_state{state="faulted",zpool="pool2"} 0
 node_zfs_zpool_state{state="faulted",zpool="poolz1"} 0
 node_zfs_zpool_state{state="offline",zpool="pool1"} 0
+node_zfs_zpool_state{state="offline",zpool="pool2"} 0
 node_zfs_zpool_state{state="offline",zpool="poolz1"} 0
 node_zfs_zpool_state{state="online",zpool="pool1"} 1
+node_zfs_zpool_state{state="online",zpool="pool2"} 0
 node_zfs_zpool_state{state="online",zpool="poolz1"} 0
 node_zfs_zpool_state{state="removed",zpool="pool1"} 0
+node_zfs_zpool_state{state="removed",zpool="pool2"} 0
 node_zfs_zpool_state{state="removed",zpool="poolz1"} 0
+node_zfs_zpool_state{state="suspended",zpool="pool1"} 0
+node_zfs_zpool_state{state="suspended",zpool="pool2"} 1
+node_zfs_zpool_state{state="suspended",zpool="poolz1"} 0
 node_zfs_zpool_state{state="unavail",zpool="pool1"} 0
+node_zfs_zpool_state{state="unavail",zpool="pool2"} 0
 node_zfs_zpool_state{state="unavail",zpool="poolz1"} 0
 # HELP node_zfs_zpool_wcnt kstat.zfs.misc.io.wcnt
 # TYPE node_zfs_zpool_wcnt untyped

collector/fixtures/proc/spl/kstat/zfs/pool2/state

@@ -0,0 +1 @@
+SUSPENDED

collector/zfs_linux.go

@@ -42,7 +42,7 @@ const (
 	// kstatDataString = "7"
 )
 
-var zfsPoolStatesName = []string{"online", "degraded", "faulted", "offline", "removed", "unavail"}
+var zfsPoolStatesName = []string{"online", "degraded", "faulted", "offline", "removed", "unavail", "suspended"}
 
 func (c *zfsCollector) openProcFile(path string) (*os.File, error) {
 	file, err := os.Open(procFilePath(path))

collector/zfs_linux_test.go

@@ -535,6 +535,15 @@ func TestPoolStateParsing(t *testing.T) {
 					t.Fatalf("Incorrect parsed value for degraded state")
 				}
 			}
+			if poolName == "pool2" {
+				if isActive != uint64(1) && stateName == "suspended" {
+					t.Fatalf("Incorrect parsed value for suspended state")
+				}
+				if isActive != uint64(0) && stateName != "suspended" {
+					t.Fatalf("Incorrect parsed value for suspended state")
+				}
+			}
+
 		})
 		file.Close()
 		if err != nil {