On Wed, Apr 3, 2019 at 5:55 PM Dominik Holler <dhol...@redhat.com> wrote: > > Hello, > would you help me to understand if the dhcp client in an oVirt guest > should refresh his dhcp configuration after the guest is resumed? > If this is the case, how this should be triggered? > > The reason why I ask is, that if a VM suspends on a first host, and > resumes on a second one, libvirt's nwfilter losses the IP address of > the guest, which means that the guest is not reachable until he > refreshes dhcp config, if the clean-traffic filter with > CTRL_IP_LEARNING=dhcp is used.
Do you know if libvirt's nwfilter transfers the IP address during live migration? I'd suspect that you'd have the same problem there. I believe that libvirt should handle this in BOTH cases (live migration and suspend/resume). It should store the learned IP in the suspended data and revive it on the target host. Calling in +Laine Stump for his opinion. Regardless of this, I think that a guest should request a dhcp renewal upon resume. After all, it may have been suspended for few years. This can be done if we add a "resumed" notification to the guest agent, and have libvvirt/Vdsm trigger after resume. > This scenario might happen in OST basic-suite-master and > basic-suite-4.3 in verify_suspend_resume_vm0. I suspect that we can work around this bug in OST by requesting Engine to resume vm0 on the same host it was suspended from > Thanks > Dominik _______________________________________________ Devel mailing list -- devel@ovirt.org To unsubscribe send an email to devel-le...@ovirt.org Privacy Statement: https://www.ovirt.org/site/privacy-policy/ oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/devel@ovirt.org/message/YMU3LEOQ34NJSTLP2U2ASVZ7CCIBA3EK/
