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Re: [Xen-users] Ubuntu Xen Kernel linux-image-4.15.0-64-generic no network devices


  • To: Bill MacAllister <bill@xxxxxxxxxxxxx>
  • From: Sarah Newman <srn@xxxxxxxxx>
  • Date: Fri, 27 Sep 2019 16:39:33 -0700
  • Cc: xen-users@xxxxxxxxxxxxxxxxxxxx
  • Delivery-date: Fri, 27 Sep 2019 23:40:00 +0000
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  • List-id: Xen user discussion <xen-users.lists.xenproject.org>

On 9/27/19 4:35 PM, Bill MacAllister wrote:
On 2019-09-27 13:38, Sarah Newman wrote:
On 9/27/19 11:00 AM, Bill MacAllister wrote:
I applied package dates, i.e. apt full-upgrade, to a Ubuntu 18.04 system and
when it rebooted there were no network devices.  The new kernel version is
linux-image-4.15.0-64-generic.  When I rebooted the system with the older
linux-image-4.15.0-54-generic kernel the network devices reappeared. I would
appreciate some suggestions on how to decipher this problem.

Thanks,

Bill


I'm assuming you mean a domU, not a dom0. We've booted that exact
kernel both in PV and HVM mode with no issues.

No, I do mean dom0.  None of the domU's were willing to come up with the
network in place.

Did you have any messages related to eth0 or xen_netfront from dmesg?
Is it reproducible?

Yes, it is reproducible.  I will need to reboot the system to get exact
messages from dmesg.  I do that later tonight.

If it's the dom0, I think it's less likely to be a xen specific issue. The first thing I would check is whether one of the partitions ran out of space or if one of the extra kernel module packages didn't get installed. You can compare the contents of /lib/modules for each version against each other.

--Sarah

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