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[Xen-devel] Unhandle NONE type device model broke QDISK backend


  • To: Olaf Hering <olaf@xxxxxxxxx>
  • From: Wei Liu <wei.liu2@xxxxxxxxxx>
  • Date: Tue, 21 May 2019 15:37:02 +0100
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  • Cc: Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Wei Liu <wei.liu2@xxxxxxxxxx>
  • Delivery-date: Tue, 21 May 2019 14:37:13 +0000
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  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

Hi Olaf

It appears there is at least one instance that's not properly handled.

See 
http://logs.test-lab.xenproject.org/osstest/logs/136440/test-amd64-amd64-xl-qcow2/10.ts-debian-di-install.log

bxl: debug: libxl_device.c:380:libxl__device_disk_set_backend: Disk vdev=xvda 
spec.backend=qdisk
libxl: debug: libxl_linux.c:235:libxl__get_hotplug_script_info: Domain 
1:backend_kind 3, no need to execute scripts
libxl: debug: libxl_device.c:1174:device_hotplug: Domain 1:No hotplug script to 
execute
libxl: debug: libxl_event.c:689:libxl__ev_xswatch_deregister: watch 
w=0x556be6153370: deregister unregistered
libxl: error: libxl_dm.c:326:libxl__domain_device_model: invalid device model 
version 3
libxl: error: libxl_dm.c:2747:device_model_spawn_outcome: Domain 1:(null): 
spawn failed (rc=-3)

The same thing showed up in the vhd test. Both test cases use QDISK
backend.

Wei.

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