go-ceph: add warn logs to finalizers.

Signed-off-by: Sven Anderson <sven@redhat.com>

cephfs/userperm.go

@@ -10,6 +10,8 @@ import "C"
 import (
 	"runtime"
 	"unsafe"
+
+	"github.com/ceph/go-ceph/internal/log"
 )
 
 // UserPerm types may be used to get or change the credentials used by the
@@ -68,5 +70,8 @@ func (p *UserPerm) Destroy() {
 }
 
 func destroyUserPerm(p *UserPerm) {
+	if p.userPerm != nil && p.managed {
+		log.Warnf("unreachable UserPerm object has not been destroyed. Cleaning up.")
+	}
 	p.Destroy()
 }

rados/operation.go

@@ -7,6 +7,8 @@ import (
 	"fmt"
 	"strings"
 	"unsafe"
+
+	"github.com/ceph/go-ceph/internal/log"
 )
 
 // The file operation.go exists to support both read op and write op types that
@@ -116,6 +118,7 @@ func (o *operation) update(kind opKind, ret C.int) error {
 
 func opStepFinalizer(s opStep) {
 	if s != nil {
+		log.Warnf("unreachable opStep object found. Cleaning up.")
 		s.free()
 	}
 }

rados/rados.go

@@ -9,6 +9,8 @@ import "C"
 import (
 	"runtime"
 	"unsafe"
+
+	"github.com/ceph/go-ceph/internal/log"
 )
 
 const (
@@ -120,6 +122,7 @@ func NewConnWithClusterAndUser(clusterName string, userName string) (*Conn, erro
 // called.
 func freeConn(conn *Conn) {
 	if conn.cluster != nil {
+		log.Warnf("unreachable Conn object has not been shut down. Cleaning up.")
 		C.rados_shutdown(conn.cluster)
 		// prevent calling rados_shutdown() more than once
 		conn.cluster = nil