VM live migration and NFS 4.2

This is a multi-part message in MIME format. ------=_NextPartTM-000-43bd1b86-b37d-4e90-be0e-0009cc3cc1fc Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi,=0A= =0A= we are currently evaluating NFS 4.2 based storage for OVirt 4.1.2. Normal o= peration=0A= and discard support work like a charm. =0A= =0A= For some strange reason we cannot use VM live migration any more. As soon a= s one =0A= NFS 4.2 based VM disk is doing disk I/O during the operation. VM stalls and= is paused. =0A= It seems as if qemu on target node cannot take over disk images. See BZ1464= 787. =0A= =0A= Has anybody else seen similar issues?=0A= =0A= Best regards. =0A= =0A= Markus = ------=_NextPartTM-000-43bd1b86-b37d-4e90-be0e-0009cc3cc1fc 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-000-43bd1b86-b37d-4e90-be0e-0009cc3cc1fc--

On Sun, Jun 25, 2017 at 10:31 PM, Markus Stockhausen < stockhausen@collogia.de> wrote:
Hi,
we are currently evaluating NFS 4.2 based storage for OVirt 4.1.2. Normal operation and discard support work like a charm.
For some strange reason we cannot use VM live migration any more. As soon as one NFS 4.2 based VM disk is doing disk I/O during the operation. VM stalls and is paused. It seems as if qemu on target node cannot take over disk images. See BZ1464787.
Can you make sure you are not suffering from any SELinux issues? What NFS server are you using? If it's Linux based, it needs some selinux commands. For example (from ovirt-system-tests): semanage fcontext -a -t nfs_t '/exports/nfs(/.*)?' restorecon -Rv /exports/nfs
Has anybody else seen similar issues?
Raz? Y.
Best regards.
Markus _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
participants (2)
-
Markus Stockhausen
-
Yaniv Kaul