The machine which exported gnbd is power off. The client machine fall into the state 'Open Disconnected Pending'. Any process access the dead gnbd fall into state 'D'. How can I destroy the gnbd block device on the client machine? [root@xen-727057 ~]# gnbd_import -n -l Device name : 63.131.xvdb ---------------------- Minor # : 0 sysfs name : /block/gnbd0 Server : 10.10.63.131 Port : 14567 State : Open Disconnected Pending Readonly : No Sectors : 16777216 [root@xen-727057 ~]# pvs & [1] 4561 [root@xen-727057 ~]# ps aux | fgrep pvs root 4561 0.6 0.1 79364 1544 pts/0 D 14:50 0:00 pvs root 4563 0.0 0.0 61112 608 pts/0 S+ 14:50 0:00 fgrep pvs [root@xen-727057 ~]# gnbd_import -n -R gnbd_import: ERROR cannot disconnect device #0 : Device or resource busy -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster