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Re: [Qemu-devel] Question about a qemu Aarch64 error when adding several

From: Kevin Zhao
Subject: Re: [Qemu-devel] Question about a qemu Aarch64 error when adding several SCSI disks
Date: Wed, 22 Jun 2016 20:53:28 +0800

Hi David,
    Thanks for your advice. In this condition, there are  more than 1
virtio-scsi controllers for the guests will induce this error.
    I'm not familiar with Qemu development.  I will try to rebuild it and
get more debug info.

On 22 June 2016 at 20:08, Dr. David Alan Gilbert <address@hidden>

> * Kevin Zhao (address@hidden) wrote:
> > Hi All,
> >        Greetings from Linaro. This is Kevin from Linaro, and recently I
> > have met a problem of qemu-system-aarch64 when I am working on
> virt-manager.
> >        I have reported a bug here:
> > https://bugs.launchpad.net/qemu/+bug/1594239
> >
> >        It's mainly bout adding several SCSI disks to Aarch64 guests.
> >        If you have a moment, pls kindly give some advice about
> this.Thanks.
> Hi Kevin,
>   The assert you've got there really should not happen:
>  starting domain: internal error: process exited while connecting to
> monitor: qemu-system-aarch64:
> /build/qemu-zxCwKP/qemu-2.5+dfsg/migration/savevm.c:620:
> vmstate_register_with_alias_id: Assertion `!se->compat || se->instance_id
> == 0' failed.
> I've only seen that error once before, and that was when the
> device had a really long device path (lots and lots of PCI bridges)
> but you've not got that.
> Can you get a full backtrace from that?
> If you can rebuild it and debug then adding some
> prints into vmstate_register_with_alias_id should help, in particular
> if you can print the name that qdev_get-dev_path returns it would
> be good and also the vmsd->name value.
> Dave
> --
> Dr. David Alan Gilbert / address@hidden / Manchester, UK

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