hi everyone

i have a bad problem in ovirt3.6.1. my hosts goes to nonresponsiveness or nonoperational. i take stale file handle in df -h  command on my main host and some other hosts too:

[root@mainhv ~]# df -h
df: ‘/rhev/data-center/mnt/hv03:_VM’: Stale file handle
df: ‘/rhev/data-center/mnt/hv04:_VM’: Stale file handle
df: ‘/rhev/data-center/mnt/hv05:_VM’: Stale file handle
df: ‘/rhev/data-center/mnt/hv07:_VM’: Stale file handle
Filesystem                                  Size  Used Avail Use% Mounted on
/dev/sda6                                   4.0G  112M  3.9G   3% /
devtmpfs                                     24G     0   24G   0% /dev
tmpfs                                        24G  4.0K   24G   1% /dev/shm
tmpfs                                        24G   41M   24G   1% /run
tmpfs                                        24G     0   24G   0% /sys/fs/cgroup

i attached  vdsm.log and  engine.log too.

my server specification:

os: centos7.1  updated

ovirt 3.6.1

vdsm : 4.17.13-0.el7.centos

libvirt: 1.2.8-16.el7_1.5

data storage:  /VM  based on xfs  filesystem

fstab:

uuid ......     /VM    xfs    defaults    0  0

thanks inadvance