Hi, I had similiar experience with some vms (really small amount of them). It hangs, cpu was 100%, console inresponsible and powering that vm off and on solves problem. But one of this vms was CentOS6, not 5 (in the fact it was our mirror.slu.cz which mirrors also ovirt project so sorry for unplanned outages ;-)
I am not sure if it is tied to migrations, I had this experience even without migrating this vm (as long as it was not migrated automatically) This didn't happen after I upgraded hosts to CentOS7.5.1804 (I am always using the latest oVirt in time here) Cpu familly is AMD Opteron(tm) Processor 6172 (yes, it is a little bit older cluster :-) Cheers, Jiri Slezka On 06/27/2018 08:59 AM, Eduardo Mayoral wrote: > Hi, > > I am experiencing that my RHEL5 guests frequently "hang" when > migrating host. Console is blank, CPU after migration is 100% and as far > as oVirt is concerned, the VM is OK. > > oVirt is 4.2.3.8-1.el7, on CentOS 7. Hosts are CentOS 7 as well. > Cluster is in "Intel Westmere family" CPU type. > > Guest is RHEL5, fully patched, kernel 4.2.3.8-1.el7 with > ovirt-guest-agent installed from EPEL. > > I do not see anything out of place in the ovirt-engine and vdsm > logs, and the guest logs are simply not there, the stop right before the > migration,as if the machine had "frozen". > > Powering the VM off and starting it starts the VM correctly. This > does not happen 100% of the time. If I try to migrate the VM when it is > freshly started the migration is faster (maybe 5 seconds), and the guest > OS does not hang. > > Anybody else experiencing something similar? Maybe something > (timeouts?) that I should tune on the guest OS for RHEL5? > > Thanks! > > -- > > Eduardo Mayoral. > > > > > _______________________________________________ > Users mailing list -- [email protected] > To unsubscribe send an email to [email protected] > 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/[email protected]/message/42D5IQBRX7ABZFAXA3O4SHABRPLDCMZA/ >
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