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SubjectRe: Problems starting Xen domU after latest stable update
On Thu, Jan 28, 2021 at 7:03 PM Boris Ostrovsky
<boris.ostrovsky@oracle.com> wrote:
>
>
> On 1/28/21 6:52 PM, Michael D Labriola wrote:
> > Hey, everyone. I've run into problems starting up my Xen domUs as of
> > the latest batch of stable updates. Whenever I try to create one, I
> > get a bunch of block device errors like this:
> >
> > libxl: error: libxl_device.c:1105:device_backend_callback: Domain 4:unable to add device with path /local/domain/0/backend/vbd/4/51712
> > libxl: error: libxl_device.c:1105:device_backend_callback: Domain 4:unable to add device with path /local/domain/0/backend/vbd/4/51728
> > libxl: error: libxl_device.c:1105:device_backend_callback: Domain 4:unable to add device with path /local/domain/0/backend/vbd/4/51744
> > libxl: error: libxl_device.c:1105:device_backend_callback: Domain 4:unable to add device with path /local/domain/0/backend/vbd/4/51760
> > libxl: error: libxl_device.c:1105:device_backend_callback: Domain 4:unable to add device with path /local/domain/0/backend/vbd/4/51776
> > libxl: error: libxl_create.c:1452:domcreate_launch_dm: Domain 4:unable to add disk devices
> > libxl: error: libxl_device.c:1105:device_backend_callback: Domain 4:unable to remove device with path /local/domain/0/backend/vbd/4/51712
> > libxl: error: libxl_device.c:1105:device_backend_callback: Domain 4:unable to remove device with path /local/domain/0/backend/vbd/4/51728
> > libxl: error: libxl_device.c:1105:device_backend_callback: Domain 4:unable to remove device with path /local/domain/0/backend/vbd/4/51744
> > libxl: error: libxl_device.c:1105:device_backend_callback: Domain 4:unable to remove device with path /local/domain/0/backend/vbd/4/51760
> > libxl: error: libxl_device.c:1105:device_backend_callback: Domain 4:unable to remove device with path /local/domain/0/backend/vbd/4/51776
> > libxl: error: libxl_domain.c:1290:devices_destroy_cb: Domain 4:libxl__devices_destroy failed
> > libxl: error: libxl_domain.c:1177:libxl__destroy_domid: Domain 4:Non-existant domain
> > libxl: error: libxl_domain.c:1131:domain_destroy_callback: Domain 4:Unable to destroy guest
> > libxl: error: libxl_domain.c:1058:domain_destroy_cb: Domain 4:Destruction of domain failed
> >
> > I'm using Xen 4.13.1 on the box I've been testing with.
> >
> > I bisected down to this commit, and reverting it does indeed fix my
> > problem. Well, this commit upstream and it's cherry-picked variants
> > on linux-5.4.y and linux-5.10.y.
>
>
> You most likely need 5f46400f7a6a4fad635d5a79e2aa5a04a30ffea1. It hit Linus tree a few hours ago.

Indeed! That commit fixes my problem when cherry-picked onto master
and the 5.4 and 5.10 stable branches.

Is that commit already headed to the stable/longterm branches or do we
have to make a bit more noise?

Thanks!

-Mike

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