Re: [Xen-users] vhd support in xen-4.4

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

On Tue, 2015-04-28 at 09:46 +0200, dmitry@xxxxxxxxxx wrote:
> Hello.
> I use Xen 4.4.1-10.el6 CentOS 6.5 (3.10.68-11.el6). I use xl to create HVM 
> domain (WinXP). VM disk in VHD format.
> disk = [ "tap2:vhd:/var/lib/xen/images/disk.vhd,xvda,w" ].
> 1. One time terminal type "Parsing config" and VM start successfull.
> 2. Next time terminal type :
> DEBUG libxl_blktap_devpath 76 vhd:/var/lib/xen/images/disk.vhd
> DEBUG libxl_blktap_devpath 81 /dev/xen/blktap-2/tapdev0
> libxl: error: libxl_exec.c:396:spawn_timeout: domain 5 device model: startup 
> timed out
> libxl: error: libxl_dm.c:1399:device_model_spawn_outcome: domain 5 device 
> model: spawn failed (rc=-3)
> libxl: error: libxl_create.c:1186:domcreate_devmodel_started: device model 
> did not start: -3
> DEBUG libxl_device_destroy_tapdisk 105 type=vhd:/var/lib/xen/images/disk.vhd 
> disk=:/var/lib/xen/images/disk.vhd
> 
> And VM don't start. xl list show VM domain, but it not work.
> 
> Next see case 1.
> Then case 2.
> Etc.
> 
> What's wrong?

I suspect a resource leak from the first case, which is
recovered/cleaned-up on failure in the second case.

Any clues in the log files under /var/log/xen?

Please can you provide the full output of "xl -vvv create <usual
options>" for both cases.

After #1 and before #2 do you have an spurious qemu or blktap/tapdisk
processes?

Ian.


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