Thank you for your time. SSH is working in every host and I can connect to everyone. I'm not sure Super VDSM daemon server is vdsmd service. See commands and responses from HV3 systemctl -bash: systemctl: command not found service --status-all abrt-ccpp hook is not installed abrtd (pid 2709) is running... abrt-dump-oops is stopped acpid (pid 2163) is running... atd (pid 2775) is running... auditd (pid 1903) is running... automount (pid 2404) is running... certmonger (pid 2814) is running... Running cgred is stopped cpuspeed is stopped crond (pid 2762) is running... cupsd (pid 2138) is running... dnsmasq is stopped # Generated by ebtables-save v1.0 on Tue May 25 18:54:05 CEST 2021 *nat :PREROUTING ACCEPT :OUTPUT ACCEPT :POSTROUTING ACCEPT :libvirt-I-vnet7 ACCEPT :I-vnet7-mac ACCEPT :I-vnet7-arp-mac ACCEPT :libvirt-I-vnet0 ACCEPT :I-vnet0-mac ACCEPT :I-vnet0-arp-mac ACCEPT :libvirt-I-vnet4 ACCEPT :I-vnet4-mac ACCEPT :I-vnet4-arp-mac ACCEPT :libvirt-I-vnet5 ACCEPT :I-vnet5-mac ACCEPT :I-vnet5-arp-mac ACCEPT :libvirt-I-vnet1 ACCEPT :I-vnet1-mac ACCEPT :I-vnet1-arp-mac ACCEPT :libvirt-I-vnet2 ACCEPT :I-vnet2-mac ACCEPT :I-vnet2-arp-mac ACCEPT :libvirt-I-vnet3 ACCEPT :I-vnet3-mac ACCEPT :I-vnet3-arp-mac ACCEPT -A PREROUTING -i vnet7 -j libvirt-I-vnet7 -A PREROUTING -i vnet0 -j libvirt-I-vnet0 -A PREROUTING -i vnet4 -j libvirt-I-vnet4 -A PREROUTING -i vnet5 -j libvirt-I-vnet5 -A PREROUTING -i vnet1 -j libvirt-I-vnet1 -A PREROUTING -i vnet2 -j libvirt-I-vnet2 -A PREROUTING -i vnet3 -j libvirt-I-vnet3 -A libvirt-I-vnet7 -j I-vnet7-mac -A libvirt-I-vnet7 -p ARP -j I-vnet7-arp-mac -A I-vnet7-mac -s 0:1a:4a:6b:89:df -j RETURN -A I-vnet7-mac -j DROP -A I-vnet7-arp-mac -p ARP --arp-mac-src 0:1a:4a:6b:89:df -j RETURN -A I-vnet7-arp-mac -j DROP -A libvirt-I-vnet0 -j I-vnet0-mac -A libvirt-I-vnet0 -p ARP -j I-vnet0-arp-mac -A I-vnet0-mac -s 0:1a:4a:6b:89:12 -j RETURN -A I-vnet0-mac -j DROP -A I-vnet0-arp-mac -p ARP --arp-mac-src 0:1a:4a:6b:89:12 -j RETURN -A I-vnet0-arp-mac -j DROP -A libvirt-I-vnet4 -j I-vnet4-mac -A libvirt-I-vnet4 -p ARP -j I-vnet4-arp-mac -A I-vnet4-mac -s 0:1a:4a:6b:89:f5 -j RETURN -A I-vnet4-mac -j DROP -A I-vnet4-arp-mac -p ARP --arp-mac-src 0:1a:4a:6b:89:f5 -j RETURN -A I-vnet4-arp-mac -j DROP -A libvirt-I-vnet5 -j I-vnet5-mac -A libvirt-I-vnet5 -p ARP -j I-vnet5-arp-mac -A I-vnet5-mac -s 0:1a:4a:6b:89:fe -j RETURN -A I-vnet5-mac -j DROP -A I-vnet5-arp-mac -p ARP --arp-mac-src 0:1a:4a:6b:89:fe -j RETURN -A I-vnet5-arp-mac -j DROP -A libvirt-I-vnet1 -j I-vnet1-mac -A libvirt-I-vnet1 -p ARP -j I-vnet1-arp-mac -A I-vnet1-mac -s 0:1a:4a:6b:89:f8 -j RETURN -A I-vnet1-mac -j DROP -A I-vnet1-arp-mac -p ARP --arp-mac-src 0:1a:4a:6b:89:f8 -j RETURN -A I-vnet1-arp-mac -j DROP -A libvirt-I-vnet2 -j I-vnet2-mac -A libvirt-I-vnet2 -p ARP -j I-vnet2-arp-mac -A I-vnet2-mac -s 0:1a:4a:6b:89:11 -j RETURN -A I-vnet2-mac -j DROP -A I-vnet2-arp-mac -p ARP --arp-mac-src 0:1a:4a:6b:89:11 -j RETURN -A I-vnet2-arp-mac -j DROP -A libvirt-I-vnet3 -j I-vnet3-mac -A libvirt-I-vnet3 -p ARP -j I-vnet3-arp-mac -A I-vnet3-mac -s 0:1a:4a:6b:89:15 -j RETURN -A I-vnet3-mac -j DROP -A I-vnet3-arp-mac -p ARP --arp-mac-src 0:1a:4a:6b:89:15 -j RETURN -A I-vnet3-arp-mac -j DROP hald (pid 2172) is running... htcacheclean is stopped httpd (pid 11862) is running... Table: filter Chain INPUT (policy ACCEPT) num target prot opt source destination 1 ACCEPT all ::/0 ::/0 state RELATED,ESTABLISHED 2 ACCEPT icmpv6 ::/0 ::/0 3 ACCEPT all ::/0 ::/0 4 ACCEPT tcp ::/0 ::/0 state NEW tcp dpt:22 5 REJECT all ::/0 ::/0 reject-with icmp6-adm-prohibited Chain FORWARD (policy ACCEPT) num target prot opt source destination 1 REJECT all ::/0 ::/0 reject-with icmp6-adm-prohibited Chain OUTPUT (policy ACCEPT) num target prot opt source destination ipmievd is stopped Table: nat Chain PREROUTING (policy ACCEPT) num target prot opt source destination Chain POSTROUTING (policy ACCEPT) num target prot opt source destination Chain OUTPUT (policy ACCEPT) num target prot opt source destination Table: filter Chain INPUT (policy ACCEPT) num target prot opt source destination Chain FORWARD (policy ACCEPT) num target prot opt source destination Chain OUTPUT (policy ACCEPT) num target prot opt source destination irqbalance (pid 1957) is running... No active sessions iscsid (pid 3083) is running... jboss-as is running (pid 12011) Kdump is operational ksm is running ksmtuned is stopped Current ktune sysctl settings: kernel.sched_min_granularity_ns = 10000000 kernel.sched_wakeup_granularity_ns = 15000000 kernel.sched_migration_cost = 5000000 vm.swappiness = 10 vm.dirty_ratio = 5 vm.dirty_background_ratio = 2 Current elevator settings: /sys/block/dm-0/queue/scheduler: none /sys/block/dm-1/queue/scheduler: none /sys/block/dm-2/queue/scheduler: none /sys/block/dm-3/queue/scheduler: none /sys/block/dm-4/queue/scheduler: noop anticipatory [deadline] cfq /sys/block/dm-5/queue/scheduler: none /sys/block/sda/queue/scheduler: noop anticipatory [deadline] cfq /sys/block/sdb/queue/scheduler: noop anticipatory [deadline] cfq libvirtd (pid 2981) is running... stopped, with no saved guests lvmetad is stopped Checking for mcelog mcelog (pid 2495) is running... mdmonitor is stopped messagebus (pid 2122) is running... momd is stopped multipathd (pid 2897) is running... No open transaction netconsole module not loaded Active NFS mountpoints: /rhev/data-center/mnt/hv3.ncr-wmc.local:_ISO /rhev/data-center/mnt/hv3.ncr-wmc.local:_vm /rhev/data-center/mnt/10.10.0.56:_vm /rhev/data-center/mnt/10.10.0.60:_vm /rhev/data-center/mnt/10.10.0.28:_bacula /rhev/data-center/mnt/10.10.0.28:_BACKUP__oVirt Configured devices: lo VLAN_300 em1 em2 em2.300 ovirtmgmt Currently active devices: lo em1 em2 ovirtmgmt em2.300@em2 VLAN_300 vnet7 vnet0 vnet4 vnet5 vnet1 vnet2 vnet3 rpc.svcgssd is stopped rpc.mountd (pid 30724) is running... nfsd (pid 30738 30737 30736 30735 30734 30733 30732 30731) is running... rpc.rquotad (pid 30720) is running... rpc.statd (pid 2012) is running... ntpd (pid 29116) is running... numad is stopped oddjobd is stopped ovirt-engine (pid 46669) is running... ovirt-engine-notifier is stopped ovirt-websocket-proxy (pid 36182) is running... portreserve is stopped master (pid 2685) is running... postmaster (pid 2538) is running... Process accounting is disabled. quota_nld is stopped radvd is stopped Usage: /etc/init.d/rc.usbsrvd {start|stop|restart} rdisc is stopped rngd is stopped rpcbind (pid 1976) is running... rpc.gssd is stopped rpc.idmapd (pid 30761) is running... rpc.svcgssd is stopped rsyslogd (pid 1928) is running... sandbox is stopped sanlock (pid 2798 2797) is running... saslauthd is stopped smartd is stopped openssh-daemon (pid 2507) is running... sssd is stopped Super VDSM daemon server is running tuned (pid 2752) is running... VDS daemon server is running wdmd (pid 2786) is running... winbindd is stopped ypbind is stopped chkconfig --list abrt-ccpp 0:off 1:off 2:off 3:on 4:off 5:on 6:off abrtd 0:off 1:off 2:off 3:on 4:off 5:on 6:off acpid 0:off 1:off 2:on 3:on 4:on 5:on 6:off atd 0:off 1:off 2:off 3:on 4:on 5:on 6:off auditd 0:off 1:off 2:on 3:on 4:on 5:on 6:off autofs 0:off 1:off 2:off 3:on 4:on 5:on 6:off blk-availability 0:off 1:on 2:on 3:on 4:on 5:on 6:off certmonger 0:off 1:off 2:off 3:on 4:on 5:on 6:off cgconfig 0:off 1:off 2:on 3:on 4:on 5:on 6:off cgred 0:off 1:off 2:off 3:off 4:off 5:off 6:off cpuspeed 0:off 1:on 2:on 3:on 4:on 5:on 6:off crond 0:off 1:off 2:on 3:on 4:on 5:on 6:off cups 0:off 1:off 2:on 3:on 4:on 5:on 6:off dnsmasq 0:off 1:off 2:off 3:off 4:off 5:off 6:off ebtables 0:off 1:off 2:off 3:off 4:off 5:off 6:off haldaemon 0:off 1:off 2:off 3:on 4:on 5:on 6:off htcacheclean 0:off 1:off 2:off 3:off 4:off 5:off 6:off httpd 0:off 1:off 2:on 3:on 4:on 5:on 6:off ip6tables 0:off 1:off 2:on 3:on 4:on 5:on 6:off ipmievd 0:off 1:off 2:off 3:off 4:off 5:off 6:off iptables 0:off 1:off 2:on 3:on 4:on 5:on 6:off irqbalance 0:off 1:off 2:off 3:on 4:on 5:on 6:off iscsi 0:off 1:off 2:off 3:on 4:on 5:on 6:off iscsid 0:off 1:off 2:off 3:on 4:on 5:on 6:off kdump 0:off 1:off 2:off 3:on 4:on 5:on 6:off ksm 0:off 1:off 2:off 3:on 4:on 5:on 6:off ksmtuned 0:off 1:off 2:off 3:on 4:on 5:on 6:off ktune 0:off 1:off 2:off 3:on 4:on 5:on 6:off libvirt-guests 0:off 1:off 2:off 3:off 4:off 5:off 6:off libvirtd 0:off 1:off 2:off 3:off 4:off 5:off 6:off lvm2-monitor 0:off 1:on 2:on 3:on 4:on 5:on 6:off mcelogd 0:off 1:off 2:off 3:on 4:off 5:on 6:off mdmonitor 0:off 1:off 2:on 3:on 4:on 5:on 6:off messagebus 0:off 1:off 2:on 3:on 4:on 5:on 6:off momd 0:off 1:off 2:off 3:off 4:off 5:off 6:off multipathd 0:off 1:off 2:off 3:off 4:off 5:off 6:off netconsole 0:off 1:off 2:off 3:off 4:off 5:off 6:off netfs 0:off 1:off 2:off 3:on 4:on 5:on 6:off network 0:off 1:off 2:on 3:on 4:on 5:on 6:off nfs 0:off 1:off 2:on 3:on 4:on 5:on 6:off nfslock 0:off 1:off 2:off 3:on 4:on 5:on 6:off ntpd 0:off 1:off 2:off 3:off 4:off 5:off 6:off ntpdate 0:off 1:off 2:off 3:off 4:off 5:off 6:off numad 0:off 1:off 2:off 3:off 4:off 5:off 6:off oddjobd 0:off 1:off 2:off 3:off 4:off 5:off 6:off ovirt-engine 0:off 1:off 2:on 3:on 4:on 5:on 6:off ovirt-engine-notifier 0:off 1:off 2:off 3:off 4:off 5:off 6:off ovirt-websocket-proxy 0:off 1:off 2:off 3:off 4:off 5:off 6:off portreserve 0:off 1:off 2:on 3:on 4:on 5:on 6:off postfix 0:off 1:off 2:on 3:on 4:on 5:on 6:off postgresql 0:off 1:off 2:on 3:on 4:on 5:on 6:off psacct 0:off 1:off 2:off 3:off 4:off 5:off 6:off quota_nld 0:off 1:off 2:off 3:off 4:off 5:off 6:off radvd 0:off 1:off 2:off 3:off 4:off 5:off 6:off rc.usbsrvd 0:off 1:off 2:on 3:on 4:on 5:on 6:off rdisc 0:off 1:off 2:off 3:off 4:off 5:off 6:off restorecond 0:off 1:off 2:off 3:off 4:off 5:off 6:off rngd 0:off 1:off 2:off 3:off 4:off 5:off 6:off rpcbind 0:off 1:off 2:on 3:on 4:on 5:on 6:off rpcgssd 0:off 1:off 2:off 3:on 4:on 5:on 6:off rpcsvcgssd 0:off 1:off 2:off 3:off 4:off 5:off 6:off rsyslog 0:off 1:off 2:on 3:on 4:on 5:on 6:off sanlock 0:off 1:off 2:on 3:on 4:on 5:on 6:off saslauthd 0:off 1:off 2:off 3:off 4:off 5:off 6:off smartd 0:off 1:off 2:off 3:off 4:off 5:off 6:off sshd 0:off 1:off 2:on 3:on 4:on 5:on 6:off sssd 0:off 1:off 2:off 3:off 4:off 5:off 6:off supervdsmd 0:off 1:off 2:on 3:on 4:on 5:on 6:off sysstat 0:off 1:on 2:on 3:on 4:on 5:on 6:off tuned 0:off 1:off 2:on 3:on 4:on 5:on 6:off udev-post 0:off 1:on 2:on 3:on 4:on 5:on 6:off vdsmd 0:off 1:off 2:on 3:on 4:on 5:on 6:off wdmd 0:off 1:off 2:on 3:on 4:on 5:on 6:off winbind 0:off 1:off 2:off 3:off 4:off 5:off 6:off ypbind 0:off 1:off 2:off 3:off 4:off 5:off 6:off

vdsmd has been started service vdsmd start vdsm: already running [ OK ] vdsm start [ OK ] I checked /var/log/vdsm/vdsm.log . 7 MB. Most repeated errors VM Channels Listener::DEBUG::2021-05-26 15:01:01,741::vmChannels::128::vds::(_handle_unconnected) Trying to connect fileno 95. GuestMonitor-SFTP-R::DEBUG::2021-05-26 15:01:01,938::vm::645::vm.Vm::(_getDiskStats) vmId=`cc75abe4-94d3-44da-8a9c-f05a5c55f55f`::Disk hdc stats not available GuestMonitor-SFTP-R::DEBUG::2021-05-26 15:01:01,939::vm::645::vm.Vm::(_getDiskStats) vmId=`cc75abe4-94d3-44da-8a9c-f05a5c55f55f`::Disk vda stats not available GuestMonitor-SFTP-R::DEBUG::2021-05-26 15:01:01,939::vm::684::vm.Vm::(_getDiskLatency) vmId=`cc75abe4-94d3-44da-8a9c-f05a5c55f55f`::Disk hdc latency not available GuestMonitor-SFTP-R::DEBUG::2021-05-26 15:01:01,939::vm::684::vm.Vm::(_getDiskLatency) vmId=`cc75abe4-94d3-44da-8a9c-f05a5c55f55f`::Disk vda latency not available VM Channels Listener::DEBUG::2021-05-26 15:01:01,987::vmChannels::128::vds::(_handle_unconnected) Trying to connect fileno 95. VM Channels Listener::DEBUG::2021-05-26 15:01:02,988::vmChannels::128::vds::(_handle_unconnected) Trying to connect fileno 95. BindingXMLRPC::ERROR::2021-05-26 15:01:03,732::BindingXMLRPC::84::vds::(threaded_start) xml-rpc handler exception Traceback (most recent call last): File "/usr/share/vdsm/BindingXMLRPC.py", line 80, in threaded_start self.server.handle_request() File "/usr/lib64/python2.6/SocketServer.py", line 278, in handle_request self._handle_request_noblock() File "/usr/lib64/python2.6/SocketServer.py", line 288, in _handle_request_noblock request, client_address = self.get_request() File "/usr/lib64/python2.6/SocketServer.py", line 456, in get_request return self.socket.accept() File "/usr/lib64/python2.6/site-packages/vdsm/SecureXMLRPCServer.py", line 136, in accept raise SSL.SSLError("%s, client %s" % (e, address[0])) SSLError: sslv3 alert certificate unknown, client 127.0.0.1 VM Channels Listener::DEBUG::2021-05-26 15:01:03,742::vmChannels::91::vds::(_handle_timeouts) Timeout on fileno 91. VM Channels Listener::DEBUG::2021-05-26 15:01:03,743::vmChannels::128::vds::(_handle_unconnected) Trying to connect fileno 95. VM Channels Listener::DEBUG::2021-05-26 15:01:04,744::vmChannels::128::vds::(_handle_unconnected) Trying to connect fileno 95. So I checked disks df -h df: `/rhev/data-center/mnt/10.10.0.56:_vm': Input/output error Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg_hv3-lv_root 50G 21G 27G 44% / tmpfs 7.8G 20K 7.8G 1% /dev/shm /dev/sda1 485M 68M 393M 15% /boot /dev/mapper/vg_hv3-lv_home 49G 12G 35G 25% /home /dev/mapper/vg_hv3-LogVol03 445G 355G 68G 85% /vm hv3.RCV-wmc.local:/ISO 50G 21G 27G 44% /rhev/data-center/mnt/hv3.RCV-wmc.local:_ISO hv3.RCV-wmc.local:/vm 445G 355G 68G 85% /rhev/data-center/mnt/hv3.RCV-wmc.local:_vm 10.10.0.60:/vm 489G 51G 438G 11% /rhev/data-center/mnt/10.10.0.60:_vm 10.10.0.28:/bacula 457G 379G 79G 83% /rhev/data-center/mnt/10.10.0.28:_bacula 10.10.0.28:/BACKUP_oVirt 457G 379G 79G 83% /rhev/data-center/mnt/10.10.0.28:_BACKUP__oVirt I guess that below is a real problem /rhev/data-center/mnt/10.10.0.56:_vm': Input/output error I still digging :)