Hi,

This was an old issue bug solved in 4.2.2, as you mentioned.
The problem then was due to correlation failure with  devices reported by
vdsm.
I suspect that this time it may re-occur because of alias name correlation
failure, but not sure.

1. Did you run the VM with "run once" or a regular running operation?
2. Can you please send the vdsm.log and engine log from the time range of
creating the VM till restarting the VM with a failure?

Thanks,
Sharon


On Thu, Nov 15, 2018 at 1:04 PM Mike Lykov <co...@ya.ru> wrote:

> Hi all.
>
> I'm testing oVirt (it's new to me also) and create some VM with
> nearly-all-default parameters.
> (ovirt 4.2.7, with last updates)
>
> I create one disk for VM (via webui) :
> General -> create -> new image with default interface virtio-scsi (boot,
> 50 Gb size)
> resource allocation - virtio-scsi enabled by default
> IO threads enabled by default
> I run it with cdrom+iso for install centos.
>
> When i try to reboot it this VM can start or not can start with error
> (one time start, next reboot - not start, sometimes after it start...)
>
> [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector]
> (ForkJoinPool-1-worker-3) [] EVENT_ID: VM_DOWN_ERROR(119), VM test_rh1
> is down with error. Exit message: Ошибка XML: Обнаружено нескол
> ько контроллеров «scsi» с индексом «0».
>
> (by the way , why errors are localised? it means  "Multiple 'scsi'
> controllers with index '0'"
>
> In engine log here is a config xml dump:
>
>      <controller type="scsi" index="0">
>        <address bus="0x00" domain="0x0000" function="0x0" slot="0x05"
> type="pci"/>
>      </controller>
>       <controller type="scsi" model="virtio-scsi" index="0">
>        <driver iothread="1"/>
>        <alias name="ua-8d89c0be-523d-4e8f-8968-3658adcd6748"/>
>      </controller>
>
> It is really contain two controllers:
>
>      <controller type="scsi" index="0">
>      <controller type="scsi" model="virtio-scsi" index="0">
>
> But I do NOT add two this controllers by hand!
> And sometimes it can start! (without configuration change)
>
> So there is a Question: How to workaround this and start the VM?
> In "vm devices" I have two controllers:
>
> virtio-scsi {ioThreadId=1}
> scsi {type=pci, slot=0x05, bus=0x00, domain=0x0000, function=0x0 {index=0}
>
> But all checkboxes are greyed
>
> bug like in this list post:
> https://lists.ovirt.org/pipermail/users/2018-February/086860.html
>
> There is a "CLOSED" bugs about this
> https://bugzilla.redhat.com/show_bug.cgi?id=1543833#c9
> https://bugzilla.redhat.com/show_bug.cgi?id=1563769
> https://bugzilla.redhat.com/show_bug.cgi?id=1535961
>
>
> --
> Mike
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