Hi Fedor,
If your host is centos 8 than I heard there is a known bug (reported). For me chmod 777 helped (It was my local test setup so I did not care much about that 777)
Artur

On Saturday, February 15, 2020, Fedor Gavrilov <fgavrilo@redhat.com> wrote:
> Hi,
>
> Have you ever seen an error like this:
>
> 2020-02-15 20:05:16,246+01 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (ForkJoinPool-1-worker-27) [] EVENT_ID: VM_DOWN_ERROR(119), VM vm0 is down with error. Exit message: internal error: child reported (status=125): unable to open /rhev/data-center/mnt/banana:_nfsshare/45e51eaa-b608-40b1-9db6-6e6a1b3ed428/images/9d440b9a-b033-4209-898b-6667a4605281/ead2017a-a7fe-4408-b8d4-1670cb767474: Permission denied.
>
> in the engine logs? I'm getting it on my env (master branch) and can't figure out why. I login as admin, I have a perfectly working host and storage machines, on which I created this VM and its disk. Without any actions in between, I try to run it and get this. Storage domain and data center statuses are updated as you expect when you put the host to maintenance and back, so it seems this is the only thing wrong. Do you know what that might be?
>
> Thanks,
> Fedor
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--

Artur Socha

Senior Software Engineer, RHV

Red Hat