24 Jul
2014
24 Jul
'14
8:02 p.m.
This is a multi-part message in MIME format. ------=_NextPartTM-000-9c8a835a-e3bd-44a7-a757-932bd6dfbb12 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable > users-bounces@ovirt.org [users-bounces@ovirt.org]" im Auftrag von &q= uot;Federico Alberto Sayd [fsayd@uncu.edu.ar]=0A= > Gesendet: Donnerstag, 24. Juli 2014 18:16=0A= > An: users@ovirt.org=0A= > Betreff: [ovirt-users] Disk migration eats all CPU, vms running in SP= M become unresponsive=0A= > =0A= > Hello:=0A= > =0A= > I am experiencing some troubles with ovirt nodes:=0A= > =0A= > When a node is selected as SPM and I move a disk between storage=0A= > domains, it seems that migration process eats all CPU and some VMs=0A= > (running on the SPM) hang, others lose network connectivity. The events= =0A= > tab at Ovirt Engine reports the CPU exceeding the defined threshold and= =0A= > then reports that VMs in such host (SPM) are not responding.=0A= > =0A= > How can I debug this? Why do the VMs become unresponsive or lost network= =0A= > connectivity when the host CPU goes too high?=0A= > =0A= > I have attached a screenshot of the ovirt-engine events, and the=0A= > relevant engine.log=0A= > =0A= > =0A= > My setup:=0A= > =0A= > oVirt Engine Version:=0A= > 3.4.0-1.el6 (Centos 6.5)=0A= > Nodes:=0A= > Centos 6.5=0A= > vdsm-4.14.6-0.el6=0A= > libvirt-0.10.2-29.el6_5.9=0A= > KVM: 0.12.1.2 - 2.415.el6_5.10 (jenkins build)=0A= > =0A= =0A= Hi, =0A= =0A= just a quick guess:=0A= =0A= I would start the analysis by looking if SPM is swapping during the =0A= disk move. We had issues during snapshot deletion. More details at =0A= https://bugzilla.redhat.com/show_bug.cgi?id=3D1116558=0A= =0A= If you encounter BSODs for windows VMs during that operation have =0A= a look at https://bugzilla.redhat.com/show_bug.cgi?id=3D1110305=0A= =0A= Lessons learned so far for us:=0A= =0A= - run SPM on the smallest host (with the fewest running VMs)=0A= to mit mitigate side effects of high CPU/disk utilization.=0A= =0A= - Clear page cache if nodes run out of free memory.=0A= =0A= Markus=0A= ------=_NextPartTM-000-9c8a835a-e3bd-44a7-a757-932bd6dfbb12 Content-Type: text/plain; name="InterScan_Disclaimer.txt" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="InterScan_Disclaimer.txt" **************************************************************************** Diese E-Mail enthält vertrauliche und/oder rechtlich geschützte Informationen. Wenn Sie nicht der richtige Adressat sind oder diese E-Mail irrtümlich erhalten haben, informieren Sie bitte sofort den Absender und vernichten Sie diese Mail. Das unerlaubte Kopieren sowie die unbefugte Weitergabe dieser Mail ist nicht gestattet. Über das Internet versandte E-Mails können unter fremden Namen erstellt oder manipuliert werden. Deshalb ist diese als E-Mail verschickte Nachricht keine rechtsverbindliche Willenserklärung. Collogia Unternehmensberatung AG Ubierring 11 D-50678 Köln Vorstand: Kadir Akin Dr. Michael Höhnerbach Vorsitzender des Aufsichtsrates: Hans Kristian Langva Registergericht: Amtsgericht Köln Registernummer: HRB 52 497 This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorized copying, disclosure or distribution of the material in this e-mail is strictly forbidden. e-mails sent over the internet may have been written under a wrong name or been manipulated. That is why this message sent as an e-mail is not a legally binding declaration of intention. Collogia Unternehmensberatung AG Ubierring 11 D-50678 Köln executive board: Kadir Akin Dr. Michael Höhnerbach President of the supervisory board: Hans Kristian Langva Registry office: district court Cologne Register number: HRB 52 497 **************************************************************************** ------=_NextPartTM-000-9c8a835a-e3bd-44a7-a757-932bd6dfbb12--