TASK ERROR: start failed: org.freedesktop.systemd1.UnitExists: Unit scope already exists.

[encore]

update: Linux KVM VMs are also affected
LXC container are not affected.

 

[mira]

Can you post the output of 'systemctl status <vmid>.scope' when this happens?

 

[encore]

Can you post the output of 'systemctl status <vmid>.scope' when this happens?

Scope is running when the VM freezes:

root@captive023-79001-bl03:~# systemctl status 1200645.scope
● 1200645.scope
Loaded: loaded (/run/systemd/transient/1200645.scope; transient; vendor preset: enabled)
Transient: yes
Active: active (running) since Thu 2019-06-06 10:44:26 CEST; 2h 18min ago
Tasks: 43 (limit: 9830)
CPU: 1h 12min 51.005s
CGroup: /qemu.slice/1200645.scope
└─11121 /usr/bin/kvm -id 1200645 -name vps-zap386293-1.zap-srv.com -chardev socket,id=qmp,path=/var/run/qemu-server/1200645.qmp,server,nowait -mon chardev=qmp,mode=control -chardev socket,id=qmp-event,path=/var/run/qmeventd.so

Jun 06 10:44:26 captive023-79001-bl03 systemd[1]: Started 1200645.scope.

Also please take a look into the resource usage of a freezing VM:
http://prntscr.com/nychsb
CPU jumps to 15-20%, memory jumps to 78% and network jumps to 0%

 

[encore]

Update: After a while, without killing the VM and wait until the process disappears (takes 5-15mins), the VM starts working again:
http://prntscr.com/nyco0x

 

[mira]

Looks like the qemu process is hanging. What's running in the VM?

 

[encore]

Looks like the qemu process is hanging. What's running in the VM?

These are VMs used by customers as well as test VMs without any custom services running. All KVM VMs are affected, Linux and windows. We are facing this on all nodes in our cluster using CEPH RBD storage or directory storage. LXC containers on the same hosts are not affected.

 

[encore]

the moment, a VM is freezing http://prntscr.com/nykjl6 (see 21:18 - 21:42) all other VMs show high disk usage:
http://prntscr.com/nykk4d
http://prntscr.com/nykk8g

What does the Disk I/O Graph on a VM means? Is it related to the VM only or to the overall disk?

 

[mira]

Please post the output of 'top -b -n 1 | head -n 15' when this happens. As well as the VM config.
Please also check if any processes are in 'D' state at that time.
In addition your hardware configuration would also be useful. (CPU, Mainboard, RAM, BIOS version)

You can also try monitoring your node with 'atop'.

 

[encore]

root@captive023-79001-bl03:~# top -b -n 1 | head -n 15
top - 18:00:08 up 1 day, 7:25, 2 users, load average: 20.87, 19.75, 18.87
Tasks: 1022 total, 4 running, 754 sleeping, 0 stopped, 0 zombie
%Cpu(s): 25.4 us, 10.8 sy, 0.2 ni, 56.6 id, 6.0 wa, 0.0 hi, 1.0 si, 0.0 st
KiB Mem : 26410505+total, 54241876 free, 20167544+used, 8187744 buff/cache
KiB Swap: 0 total, 0 free, 0 used. 66865996 avail Mem

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
3449224 root 20 0 9555708 8.052g 27288 S 400.0 3.2 254:55.22 kvm
3114381 root 20 0 5338756 4.059g 27436 S 330.0 1.6 891:25.72 kvm
3062631 root 20 0 17.275g 0.016t 27996 t 100.0 6.4 118:21.34 kvm
3665345 root 20 0 585036 139504 12728 R 100.0 0.1 8:06.85 pvedaemon worke
3102005 root 20 0 33.313g 0.029t 27424 S 90.0 11.6 365:40.19 kvm
3425985 root 20 0 5406636 4.059g 27412 S 60.0 1.6 122:09.18 kvm
2504 ceph 20 0 5708412 4.655g 29672 S 35.0 1.8 330:51.32 ceph-osd
3581158 1002 20 0 8229688 1.213g 19400 S 35.0 0.5 57:23.93 java

no D state processes, expect sometimes ceph process has D state for some seconds.

Our cluster has 32 nodes.
Most of them are HP BL460c g8 blades with newest BIOS from 05/2018 (I31) and newest Raid Controller firmware (also tested in HBA mode to bypass the raid controller, no luck). 2x E5-2650v2 or 2xE5-2680v2 CPUs, 192 - 256 GB DDR3 regECC per node. Only using SSDs.
Also some supermicro server with v3 and v4 CPUs.
CEPH is only used by ~ 7 nodes.
All other nodes still running with local storages (ext4 directory + qcow2 for KVM and raw for LXC CTs)
Issue exists on ALL nodes.

For example, a node has 20 KVM VMs (Linux and Windows). Once you see a VM freezing, ALL VMs what are NOT freezing show heav disk i/O in proxmox graph http://prntscr.com/nyxssq but those VMs what shows this behaviour, do not freeze.
VMs what are freezing do have ZERO i/O at this point, looks like this then:
http://prntscr.com/nyxtbs
http://prntscr.com/nyxtft

We already played around with the cache setting (none and directsync) and which much other stuff. We are facing those issues for months now and we are very desperate.

 

[encore]

I observed "iotop" for a while.
Once those i/O on all VMs occur, there is a kworker process writing with ~ 500 MB/s:

2598573 be/4 root 0.00 B/s 478.63 M/s 0.00 % 5.02 % [kworker/u129:3]

Any ideas?

 

[encore]

I am still on that issue and figured out:
Once I remove the network adapter from the proxmox VM, it does not freeze anymore.
If I add it again - it is the same if it is virtio, intel or realtek - it freezes.
Also enabled the firewall dropping all incoming packets, still freezing.

 

[mira]

Could you provide the config of the VM you tried those things? In addition the network config of your host and the output of 'ip -details a' please. It might contain public IPs, you probably want to mask them or something.

 

[encore]

Host Node network config:

root@captive022-79001-bl01:~# cat /etc/network/interfaces
auto lo
iface lo inet loopback

iface eno1 inet manual

auto vmbr0
iface vmbr0 inet static
address 185.239.XXXXXX
netmask 255.255.255.0
gateway 185.239.XXXXXX
bridge_ports eno1
bridge_stp off
bridge_fd 0

auto vmbr0:0
iface vmbr0:0 inet static
address 10.10.10.219
netmask 255.255.255.0

auto eno2
iface eno2 inet static
address 10.10.20.30
netmask 255.255.255.0

vmbr0 is used for all VMs and CTs
vmbr0:0 is used for corosync.
eno2 is used for ceph traffic (currently just testing, most nodes use local ext4 dir storages)

VM config:

root@captive022-79001-bl01:~# qm config 1200920
agent: 1,fstrim_cloned_disks=1
balloon: 2048
bootdisk: scsi0
cipassword: **********
ciuser: Administrator
cores: 6
cpu: host
cpulimit: 6
ide2: captive022-lxcstor01-localLV:1200920/vm-1200920-cloudinit.qcow2,media=cdrom
ipconfig0: gw=92.42.47.1,ip=92.42.47.22/24
memory: 8192
name: vps-zap364572-1.zap-srv.com
onboot: 1
ostype: win10
scsi0: captive022-lxcstor01-localLV:1200920/vm-1200920-disk-0.qcow2,cache=directsync,discard=on,format=qcow2,iothread=1,mbps_rd=100,mbps_rd_max=100,mbps_wr=100,mbps_wr_max=100,size=50G,ssd=1
scsihw: virtio-scsi-single
serial0: socket
smbios1: uuid=1b2119a0-b6d9-471e-8df1-4646ebe6c658
vmgenid: 0de43e14-a16f-4954-90af-65f87695beb9

I already tried many different configs.
- virtio iscsi single
- virtio iscsi
- iothread/ no iothread
- discard/ no discard
- bandwidth disk limit / no limit
- realtek, virtio, intel network cards, without network card
- ceph storage (raw) ext4 dir storage (qcow2)

Nothing helps. Except removing the network adapter completly, then those VMs do not freeze.

I have a node with 10x VMs. All with Win2016/2019.
I stop all VMs, start them again - then 1-3 mins later, freezes are starting for 2-4 VMs (randomly)
After that, I stop them all again (what takes up to 30mins until those frozen VMs are gone (even if I use kill -9)) I change some settings and test it again. This is what I am doing for days now.

I have also tested WITH a network adapter but with "disconnect" option - still freezing.
Only thing helps is removing the network adapter :/

ip -details a:

Spoiler

root@captive022-79001-bl01:~# ip -details a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 promiscuity 0 numtxqueues 1 numrxqueues 1 gso_max_size 65536 gso_max_segs 65535
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq master vmbr0 state UP group default qlen 1000
link/ether d8:9d:67:6b:b3:b8 brd ff:ff:ff:ff:ff:ff promiscuity 1
bridge_slave state forwarding priority 32 cost 2 hairpin off guard off root_block off fastleave off learning on flood on port_id 0x8001 port_no 0x1 designated_port 32769 designated_cost 0 designated_bridge 8000.d8:9d:67:6b:b3:b8 designated_root 8000.d8:9d:67:6b:b3:b8 hold_timer 0.00 message_age_timer 0.00 forward_delay_timer 0.00 topology_change_ack 0 config_pending 0 proxy_arp off proxy_arp_wifi off mcast_router 1 mcast_fast_leave off mcast_flood on neigh_suppress off group_fwd_mask 0x0 group_fwd_mask_str 0x0 vlan_tunnel off numtxqueues 32 numrxqueues 32 gso_max_size 65513 gso_max_segs 65535 portid 01000000000000000000004a4a31364833
3: eno2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether d8:9d:67:6b:b3:bc brd ff:ff:ff:ff:ff:ff promiscuity 0 numtxqueues 32 numrxqueues 32 gso_max_size 65513 gso_max_segs 65535 portid 02000000000000000000004a4a31364833
inet 10.10.20.30/24 brd 10.10.20.255 scope global eno2
valid_lft forever preferred_lft forever
inet6 fe80::da9d:67ff:fe6b:b3bc/64 scope link
valid_lft forever preferred_lft forever
4: vmbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether d8:9d:67:6b:b3:b8 brd ff:ff:ff:ff:ff:ff promiscuity 0
bridge forward_delay 0 hello_time 200 max_age 2000 ageing_time 30000 stp_state 0 priority 32768 vlan_filtering 0 vlan_protocol 802.1Q bridge_id 8000.d8:9d:67:6b:b3:b8 designated_root 8000.d8:9d:67:6b:b3:b8 root_port 0 root_path_cost 0 topology_change 0 topology_change_detected 0 hello_timer 0.00 tcn_timer 0.00 topology_change_timer 0.00 gc_timer 3.07 vlan_default_pvid 1 vlan_stats_enabled 0 group_fwd_mask 0 group_address 01:80:c2:00:00:00 mcast_snooping 1 mcast_router 1 mcast_query_use_ifaddr 0 mcast_querier 0 mcast_hash_elasticity 4 mcast_hash_max 512 mcast_last_member_count 2 mcast_startup_query_count 2 mcast_last_member_interval 100 mcast_membership_interval 26000 mcast_querier_interval 25500 mcast_query_interval 12500 mcast_query_response_interval 1000 mcast_startup_query_interval 3124 mcast_stats_enabled 0 mcast_igmp_version 2 mcast_mld_version 1 nf_call_iptables 0 nf_call_ip6tables 0 nf_call_arptables 0 numtxqueues 1 numrxqueues 1 gso_max_size 65513 gso_max_segs 65535
inet 185.239.XXXXX/24 brd 185.239.XXXXX scope global vmbr0
valid_lft forever preferred_lft forever
inet 10.10.10.219/24 brd 10.10.10.255 scope global vmbr0:0
valid_lft forever preferred_lft forever
inet6 fe80::da9d:67ff:fe6b:b3b8/64 scope link
valid_lft forever preferred_lft forever
7: veth1098566i0@if6: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc htb master vmbr0 state UP group default qlen 1000
link/ether fe:69:de:a0:e8:82 brd ff:ff:ff:ff:ff:ff link-netnsid 0 promiscuity 1
veth
bridge_slave state forwarding priority 32 cost 2 hairpin off guard off root_block off fastleave off learning on flood on port_id 0x8003 port_no 0x3 designated_port 32771 designated_cost 0 designated_bridge 8000.d8:9d:67:6b:b3:b8 designated_root 8000.d8:9d:67:6b:b3:b8 hold_timer 0.00 message_age_timer 0.00 forward_delay_timer 0.00 topology_change_ack 0 config_pending 0 proxy_arp off proxy_arp_wifi off mcast_router 1 mcast_fast_leave off mcast_flood on neigh_suppress off group_fwd_mask 0x0 group_fwd_mask_str 0x0 vlan_tunnel off numtxqueues 1 numrxqueues 1 gso_max_size 65536 gso_max_segs 65535

[CUT SOME STUFF; AS IT IS TOO MUCH]

357: veth1200922i0@if356: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc htb master vmbr0 state UP group default qlen 1000
link/ether fe:67:8b:39:7d:a3 brd ff:ff:ff:ff:ff:ff link-netnsid 42 promiscuity 1
veth
bridge_slave state forwarding priority 32 cost 2 hairpin off guard off root_block off fastleave off learning on flood on port_id 0x8006 port_no 0x6 designated_port 32774 designated_cost 0 designated_bridge 8000.d8:9d:67:6b:b3:b8 designated_root 8000.d8:9d:67:6b:b3:b8 hold_timer 0.00 message_age_timer 0.00 forward_delay_timer 0.00 topology_change_ack 0 config_pending 0 proxy_arp off proxy_arp_wifi off mcast_router 1 mcast_fast_leave off mcast_flood on neigh_suppress off group_fwd_mask 0x0 group_fwd_mask_str 0x0 vlan_tunnel off numtxqueues 1 numrxqueues 1 gso_max_size 65536 gso_max_segs 65535
359: veth1200921i0@if358: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc htb master vmbr0 state UP group default qlen 1000
link/ether fe:3a:2f:63:c6:40 brd ff:ff:ff:ff:ff:ff link-netnsid 40 promiscuity 1
veth
bridge_slave state forwarding priority 32 cost 2 hairpin off guard off root_block off fastleave off learning on flood on port_id 0x8009 port_no 0x9 designated_port 32777 designated_cost 0 designated_bridge 8000.d8:9d:67:6b:b3:b8 designated_root 8000.d8:9d:67:6b:b3:b8 hold_timer 0.00 message_age_timer 0.00 forward_delay_timer 0.00 topology_change_ack 0 config_pending 0 proxy_arp off proxy_arp_wifi off mcast_router 1 mcast_fast_leave off mcast_flood on neigh_suppress off group_fwd_mask 0x0 group_fwd_mask_str 0x0 vlan_tunnel off numtxqueues 1 numrxqueues 1 gso_max_size 65536 gso_max_segs 65535
381: veth1198665i0@if380: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc htb master vmbr0 state UP group default qlen 1000
link/ether fe:43:af:a0:02:fc brd ff:ff:ff:ff:ff:ff link-netnsid 7 promiscuity 1
veth
bridge_slave state forwarding priority 32 cost 2 hairpin off guard off root_block off fastleave off learning on flood on port_id 0x8002 port_no 0x2 designated_port 32770 designated_cost 0 designated_bridge 8000.d8:9d:67:6b:b3:b8 designated_root 8000.d8:9d:67:6b:b3:b8 hold_timer 0.00 message_age_timer 0.00 forward_delay_timer 0.00 topology_change_ack 0 config_pending 0 proxy_arp off proxy_arp_wifi off mcast_router 1 mcast_fast_leave off mcast_flood on neigh_suppress off group_fwd_mask 0x0 group_fwd_mask_str 0x0 vlan_tunnel off numtxqueues 1 numrxqueues 1 gso_max_size 65536 gso_max_segs 65535
382: tap1098564i0: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc htb master fwbr1098564i0 state UNKNOWN group default qlen 1000
link/ether 02:0e:17:d4:ae:c2 brd ff:ff:ff:ff:ff:ff promiscuity 2
tun
bridge_slave state forwarding priority 32 cost 100 hairpin off guard off root_block off fastleave off learning on flood on port_id 0x8002 port_no 0x2 designated_port 32770 designated_cost 0 designated_bridge 8000.2a:43:80:6b:b9:80 designated_root 8000.2a:43:80:6b:b9:80 hold_timer 0.00 message_age_timer 0.00 forward_delay_timer 0.00 topology_change_ack 0 config_pending 0 proxy_arp off proxy_arp_wifi off mcast_router 1 mcast_fast_leave off mcast_flood on neigh_suppress off group_fwd_mask 0x0 group_fwd_mask_str 0x0 vlan_tunnel off numtxqueues 1 numrxqueues 1 gso_max_size 65536 gso_max_segs 65535
383: fwbr1098564i0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 2a:43:80:6b:b9:80 brd ff:ff:ff:ff:ff:ff promiscuity 0
bridge forward_delay 0 hello_time 200 max_age 2000 ageing_time 30000 stp_state 0 priority 32768 vlan_filtering 0 vlan_protocol 802.1Q bridge_id 8000.2a:43:80:6b:b9:80 designated_root 8000.2a:43:80:6b:b9:80 root_port 0 root_path_cost 0 topology_change 0 topology_change_detected 0 hello_timer 0.00 tcn_timer 0.00 topology_change_timer 0.00 gc_timer 295.10 vlan_default_pvid 1 vlan_stats_enabled 0 group_fwd_mask 0 group_address 01:80:c2:00:00:00 mcast_snooping 1 mcast_router 1 mcast_query_use_ifaddr 0 mcast_querier 0 mcast_hash_elasticity 4 mcast_hash_max 512 mcast_last_member_count 2 mcast_startup_query_count 2 mcast_last_member_interval 100 mcast_membership_interval 26000 mcast_querier_interval 25500 mcast_query_interval 12500 mcast_query_response_interval 1000 mcast_startup_query_interval 3124 mcast_stats_enabled 0 mcast_igmp_version 2 mcast_mld_version 1 nf_call_iptables 0 nf_call_ip6tables 0 nf_call_arptables 0 numtxqueues 1 numrxqueues 1 gso_max_size 65536 gso_max_segs 65535
384: fwpr1098564p0@fwln1098564i0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master vmbr0 state UP group default qlen 1000
link/ether a2:4c:0a:f0:ce:4d brd ff:ff:ff:ff:ff:ff promiscuity 1
veth
bridge_slave state forwarding priority 32 cost 2 hairpin off guard off root_block off fastleave off learning on flood on port_id 0x8007 port_no 0x7 designated_port 32775 designated_cost 0 designated_bridge 8000.d8:9d:67:6b:b3:b8 designated_root 8000.d8:9d:67:6b:b3:b8 hold_timer 0.00 message_age_timer 0.00 forward_delay_timer 0.00 topology_change_ack 0 config_pending 0 proxy_arp off proxy_arp_wifi off mcast_router 1 mcast_fast_leave off mcast_flood on neigh_suppress off group_fwd_mask 0x0 group_fwd_mask_str 0x0 vlan_tunnel off numtxqueues 1 numrxqueues 1 gso_max_size 65536 gso_max_segs 65535
385: fwln1098564i0@fwpr1098564p0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master fwbr1098564i0 state UP group default qlen 1000
link/ether 2a:43:80:6b:b9:80 brd ff:ff:ff:ff:ff:ff promiscuity 1
veth
bridge_slave state forwarding priority 32 cost 2 hairpin off guard off root_block off fastleave off learning on flood on port_id 0x8001 port_no 0x1 designated_port 32769 designated_cost 0 designated_bridge 8000.2a:43:80:6b:b9:80 designated_root 8000.2a:43:80:6b:b9:80 hold_timer 0.00 message_age_timer 0.00 forward_delay_timer 0.00 topology_change_ack 0 config_pending 0 proxy_arp off proxy_arp_wifi off mcast_router 1 mcast_fast_leave off mcast_flood on neigh_suppress off group_fwd_mask 0x0 group_fwd_mask_str 0x0 vlan_tunnel off numtxqueues 1 numrxqueues 1 gso_max_size 65536 gso_max_segs 65535
386: tap1098622i0: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN group default qlen 1000
link/ether 2a:b8:47:9a:25:14 brd ff:ff:ff:ff:ff:ff promiscuity 1
tun numtxqueues 1 numrxqueues 1 gso_max_size 65536 gso_max_segs 65535

There are also some LXC containers (what work fine) on that node so only 11 VMs.

 

[mira]

Please post the VM config again with the net device. Also please attach the complete 'ip -details a' output as a text file when the VM is running with the net device.

 

[encore]

I started only one VM with a network adapter. These lines were added in the ip details a output, so I think they are relevant:

434: tap1098623i0: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc htb master fwbr1098623i0 state UNKNOWN group default qlen 1000
link/ether 06:a4:02:54:c7:1f brd ff:ff:ff:ff:ff:ff promiscuity 2
tun
bridge_slave state forwarding priority 32 cost 100 hairpin off guard off root_block off fastleave off learning on flood on port_id 0x8002 port_no 0x2 designated_port 32770 designated_cost 0 designated_bridge 8000.7a:60:4:97:59:bd designated_root 8000.7a:60:4:97:59:bd hold_timer 0.00 message_age_timer 0.00 forward_delay_timer 0.00 topology_change_ack 0 config_pending 0 proxy_arp off proxy_arp_wifi off mcast_router 1 mcast_fast_leave off mcast_flood on neigh_suppress off group_fwd_mask 0x0 group_fwd_mask_str 0x0 vlan_tunnel off numtxqueues 1 numrxqueues 1 gso_max_size 65536 gso_max_segs 65535
435: fwbr1098623i0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 7a:60:04:97:59:bd brd ff:ff:ff:ff:ff:ff promiscuity 0
bridge forward_delay 0 hello_time 200 max_age 2000 ageing_time 30000 stp_state 0 priority 32768 vlan_filtering 0 vlan_protocol 802.1Q bridge_id 8000.7a:60:4:97:59:bd designated_root 8000.7a:60:4:97:59:bd root_port 0 root_path_cost 0 topology_change 0 topology_change_detected 0 hello_timer 0.00 tcn_timer 0.00 topology_change_timer 0.00 gc_timer 241.70 vlan_default_pvid 1 vlan_stats_enabled 0 group_fwd_mask 0 group_address 01:80:c2:00:00:00 mcast_snooping 1 mcast_router 1 mcast_query_use_ifaddr 0 mcast_querier 0 mcast_hash_elasticity 4 mcast_hash_max 512 mcast_last_member_count 2 mcast_startup_query_count 2 mcast_last_member_interval 100 mcast_membership_interval 26000 mcast_querier_interval 25500 mcast_query_interval 12500 mcast_query_response_interval 1000 mcast_startup_query_interval 3124 mcast_stats_enabled 0 mcast_igmp_version 2 mcast_mld_version 1 nf_call_iptables 0 nf_call_ip6tables 0 nf_call_arptables 0 numtxqueues 1 numrxqueues 1 gso_max_size 65536 gso_max_segs 65535
436: fwpr1098623p0@fwln1098623i0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master vmbr0 state UP group default qlen 1000
link/ether b2:12:86:a5:83:15 brd ff:ff:ff:ff:ff:ff promiscuity 1
veth
bridge_slave state forwarding priority 32 cost 2 hairpin off guard off root_block off fastleave off learning on flood on port_id 0x8007 port_no 0x7 designated_port 32775 designated_cost 0 designated_bridge 8000.d8:9d:67:6b:b3:b8 designated_root 8000.d8:9d:67:6b:b3:b8 hold_timer 0.00 message_age_timer 0.00 forward_delay_timer 0.00 topology_change_ack 0 config_pending 0 proxy_arp off proxy_arp_wifi off mcast_router 1 mcast_fast_leave off mcast_flood on neigh_suppress off group_fwd_mask 0x0 group_fwd_mask_str 0x0 vlan_tunnel off numtxqueues 1 numrxqueues 1 gso_max_size 65536 gso_max_segs 65535
437: fwln1098623i0@fwpr1098623p0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master fwbr1098623i0 state UP group default qlen 1000
link/ether 7a:60:04:97:59:bd brd ff:ff:ff:ff:ff:ff promiscuity 1
veth
bridge_slave state forwarding priority 32 cost 2 hairpin off guard off root_block off fastleave off learning on flood on port_id 0x8001 port_no 0x1 designated_port 32769 designated_cost 0 designated_bridge 8000.7a:60:4:97:59:bd designated_root 8000.7a:60:4:97:59:bd hold_timer 0.00 message_age_timer 0.00 forward_delay_timer 0.00 topology_change_ack 0 config_pending 0 proxy_arp off proxy_arp_wifi off mcast_router 1 mcast_fast_leave off mcast_flood on neigh_suppress off group_fwd_mask 0x0 group_fwd_mask_str 0x0 vlan_tunnel off numtxqueues 1 numrxqueues 1 gso_max_size 65536 gso_max_segs 65535

 

[encore]

it seems like switching the network adapter to virtio fixes the issue, freezes are gone.