[Pkg-xen-devel] Bug#799122: Bug#799122: xen-hypervisor-4.4-amd64: Networking of domUs stops working after a few minutes

[Ian Campbell]

On Wed, 2015-09-16 at 01:52 +0200, Arne Klein wrote:
> 
[...]
> At the moment when the network in the domU completely stops working,
> there is the error message
> [2178752.854380] vif vif-33-0 vif33.0: Guest Rx stalled
> visible in dmesg in the dom0.

This will therefore be a kernel issue not a hypervisor one. It sounds
like a backend one given the issue is with both new and existing Wheezy
guests.

> We tested the current lenny kernel linux-image-3.16.0-4-amd64 as well
> as the backport linux-image-4.1.0-0.bpo.1-amd64 on the dom0 as well
> as the domU.

(I suppose you meant s/lenny/jessie/ ;-)

These are kernel ABI versions, the package release versions are things
like 3.16.7-ckt17-1 or 4.2.5-1~bpo8+1, which yu can either get from
dpkg or from /proc/version (at the end, before the date, I think).

If you can let me know the versions then I can more sensibly reassign
this to the kernel packages. It will also give some baselines to see
what if any fixes we do or don't have.

>  The problem happens with newly created domUs via 'xen-create-image', 
> as well as with older domUs which have been migrated from a debian
> wheezy dom0. It happens with the vif-route as well as the vif-bridge
> script in the domU configuration.
> 
> When the network stops working, the ARP tables are no longer filled
> on dom0 and domU, for example:
> 
> Address                  HWtype  HWaddress           Flags
> Mask            Iface
> x.y.z.v                     (incomplete)                             
>  vif33.0
> 
> 
> -- System Information:
> Debian Release: 8.2
>   APT prefers stable-updates
>   APT policy: (500, 'stable-updates'), (500, 'stable')
> Architecture: amd64 (x86_64)
> 
> Kernel: Linux 4.1.0-0.bpo.1-amd64 (SMP w/8 CPU cores)
> Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
> Shell: /bin/sh linked to /bin/dash
> Init: systemd (via /run/systemd/system)
> 
> xen-hypervisor-4.4-amd64 depends on no packages.
> 
> Versions of packages xen-hypervisor-4.4-amd64 recommends:
> ii  xen-utils-4.4  4.4.1-9+deb8u1
> 
> xen-hypervisor-4.4-amd64 suggests no packages.
> 
> -- no debconf information
> 
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