Re: [Xen-devel] xen 4.6 regression: xl create fails if domU have custom vifname

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Thu, Aug 27, 2015 at 04:41:46PM +0200, Fabio Fantoni wrote:
> Today trying xen 4.6.0-rc2 with all things needed for future production
> server I found a regression: xl create fails if domU have custom vifname.
> xl create test.cfg
> Parsing config from test.cfg
> libxl: error: libxl_exec.c:118:libxl_report_child_exitstatus:
> /etc/xen/scripts/vif-bridge add [14581] exited with error status 1
> libxl: error: libxl_device.c:1085:device_hotplug_child_death_cb: script: ip
> link set vif14.0-emu name frc-0-0-emu failed

This is the culprit.

Did you do a clean install?

You need to remove udev files in /etc. I should have mentioned this in
testing instructions.

Wei.

> libxl: error: libxl_create.c:1380:domcreate_attach_vtpms: unable to add nic
> devices
> libxl: error: libxl_exec.c:118:libxl_report_child_exitstatus:
> /etc/xen/scripts/block remove [14615] exited with error status 1
> libxl: error: libxl_device.c:1085:device_hotplug_child_death_cb: script:
> /etc/xen/scripts/block failed; error detected.
> libxl: error: libxl.c:1580:libxl__destroy_domid: non-existant domain 14
> libxl: error: libxl.c:1538:domain_destroy_callback: unable to destroy guest
> with domid 14
> libxl: error: libxl.c:1465:domain_destroy_cb: destruction of domain 14
> failed
> 
> From domU xl cfg:
> vif=['bridge=xenbr0,mac=00:16:3e:dd:e3:f1,vifname=frc-0-0']
> 
> Same domU removing only vifname is working.
> 
> On production server with xen 4.4.2 or 4.5.1 domUs with vifname are working.
> 
> I did a fast search without found the exact bug/regression cause.
> 
> If you need more informations/tests tell me and I'll post them.
> 
> Thanks for any reply and sorry for my bad english.

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