<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Hi guys,<div class=""><br class=""></div><div class="">Recently I got a strange problem in StarlingX. When I reboot one VM with two physical pci-passthrough NICs, then all of VMs cannot be connected. I lost connections with all VMs and also the VMs lost each others. </div><div class=""><br class=""></div><div class="">Below is the StarlingX environment.</div><div class=""><br class=""></div><div class="">1. stx1.0 version, bootimage[1] </div><div class="">2. Simplex deployment</div><div class="">3. 5 Network ports. Only one don’t support DPDK,and it is used to OAM Network. In the rest, two are used to data network, and another two are used to passthrough to a VM.</div><div class="">4. The VM was attached two more virtual networks. I have tested the case of attaching one virtual net, it was no problem. </div><div class=""><br class=""></div><div class="">When I reboot the VM, something were happened. The interfaces and bridges were down, all the virtual dhcp services were down and ovs-vswitchd was restarted. But when I up the interfaces and dhcp services and reboot the other VMs, I have got the connections with them again.</div><div class=""><br class=""></div><div class="">It’s ok when to reboot the VM without physical NIC. We think it may be caused by ovs-dpdk, so we stop to use ovs-dpdk and start the ovs manually, the problem was gone.</div><div class=""><br class=""></div><div class="">I cannot understand the problem, anybody could give me some comments for it? Thanks a lot.</div><div class=""><br class=""></div><div class="">[1] <a href="http://mirror.starlingx.cengn.ca/mirror/starlingx/r2018.10/centos/2018.10.0/outputs/iso/bootimage.iso" class="">http://mirror.starlingx.cengn.ca/mirror/starlingx/r2018.10/centos/2018.10.0/outputs/iso/bootimage.iso</a></div><div class=""><br class=""></div><div class="">Kunpeng</div></body></html>