Hi, same problem here after reboot on last pve-no-subscription :
I have half of the vms on this server not booting
# qm start 126
ipcc_send_rec failed: File too large
Failed to create message: Input/output error
start failed: command '/usr/bin/systemd-run --scope --slice qemu --unit 126 -p 'KillMode=none' -p 'CPUShares=1000' /usr/bin/kvm -id 126 -chardev 'socket,id=qmp,path=/var/run/qemu-server/126.qmp,server,nowait' -mon 'chardev=qmp,mode=control' -vnc unix:/var/run/qemu-server/126.vnc,x509,password -pidfile /var/run/qemu-server/126.pid -daemonize -smbios 'type=1,serial=regiesmtp391,uuid=d768ce9d-863d-45b1-affe-6000c1539549' -name regiesmtp391 -smp '2,sockets=1,cores=2,maxcpus=2' -nodefaults -boot 'menu=on,strict=on,reboot-timeout=1000' -vga cirrus -cpu kvm64,+lahf_lm,+sep,+kvm_pv_unhalt,+kvm_pv_eoi,enforce -m 1700 -object 'memory-backend-ram,size=1700M,id=ram-node0' -numa 'node,nodeid=0,cpus=0-1,memdev=ram-node0' -k fr -device 'pci-bridge,id=pci.1,chassis_nr=1,bus=pci.0,addr=0x1e' -device 'pci-bridge,id=pci.2,chassis_nr=2,bus=pci.0,addr=0x1f' -device 'piix3-usb-uhci,id=uhci,bus=pci.0,addr=0x1.0x2' -device 'virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3' -iscsi 'initiator-name=iqn.1993-08.org.debian:01:2337f5fe8fe9' -drive 'if=none,id=drive-ide2,media=cdrom,aio=threads' -device 'ide-cd,bus=ide.1,unit=0,drive=drive-ide2,id=ide2,bootindex=200' -drive 'file=/var/lib/vz/images/126/vm-126-disk-1.qcow2,if=none,id=drive-virtio0,format=qcow2,cache=none,aio=native,detect-zeroes=on' -device 'virtio-blk-pci,drive=drive-virtio0,id=virtio0,bus=pci.0,addr=0xa,bootindex=100' -netdev 'type=tap,id=net0,ifname=tap126i0,script=/var/lib/qemu-server/pve-bridge,downscript=/var/lib/qemu-server/pve-bridgedown,vhost=on' -device 'virtio-net-pci,mac=12:09:88:2A:79:71,netdev=net0,bus=pci.0,addr=0x12,id=net0,bootindex=300' -netdev 'type=tap,id=net1,ifname=tap126i1,script=/var/lib/qemu-server/pve-bridge,downscript=/var/lib/qemu-server/pve-bridgedown,vhost=on' -device 'virtio-net-pci,mac=D2:44:36:4E:4C:3F,netdev=net1,bus=pci.0,addr=0x13,id=net1,bootindex=301'' failed: exit code 1
ipcc_send_rec failed: File too large
Edit : after second reboot, no more problem. I had have also strange multicast problem on first reboot on all cluster nodes. Maybe something bad has happen.