Re: [Xen-devel] libxl: cannot start guest

[Christoph Egger <Christoph.Egger@xxxxxxx>]

On 05/18/12 16:23, Christoph Egger wrote:

> On 05/18/12 15:30, Ian Campbell wrote:
> 
>> On Fri, 2012-05-18 at 14:17 +0100, Christoph Egger wrote:
>>> Hi,
>>>
>>> I am currently using c/s 25371:e9058654ca08.
>>> When I try to start a HVM guest I get this failure:
>>>
>>>
>>> xc: info: VIRTUAL MEMORY ARRANGEMENT:
>>>   Loader:        0000000000100000->000000000019bd04
>>>   TOTAL:         0000000000000000->00000000ff800000
>>>   ENTRY ADDRESS: 0000000000100000
>>> xc: info: PHYSICAL MEMORY ALLOCATION:
>>>   4KB PAGES: 0x0000000000000200
>>>   2MB PAGES: 0x00000000000003fb
>>>   1GB PAGES: 0x0000000000000002
>>> libxl: error: libxl.c:3208:libxl_sched_credit_domain_set: Cpu weight out
>>> of range, valid values are within range from 1 to 65535
>>> libxl: error: libxl_xshelp.c:102:libxl__xs_get_dompath: failed to get
>>> dompath for 1: Bad file descriptor
>>
>> This is on NetBSD?
> 
> 
> Yes.
> 
>>
>> These sorts of symptoms are similar to those fixed by 25364:8dce7a4121b9
>> but you've already got that. It might be worth doing a full clean and
>> rebuild, just in case.
> 
> 
> This is a clean build.
> 
>  
>> What does your guest config look like?
> 
> 
> builder='hvm'
> memory=4096
> nestedhvm=1
> name="guest"
> vcpus=4
> cpuid="host,page1gb=k,hypervisor=0"
> acpi=1
> apic=1
> vif = [ 'type=ioemu, bridge=bridge0, model=e1000' ]
> disk = [ 'file:/hvm-guest/guest.img,ioemu:hda,w' ]
> serial='pty'
> vnc=1
> sdl=0
> 
>> What is your command line?
> 
> xl create -c guest.conf
> 
>  
>> Do you know when it last worked?
> 
> 
> Changeset 24462 worked. I need to bisect the exact
> changeset.
> 
>  
>> The places which close ctx->xsh are very few -- might be worth
>> annotating any call to xs_daemon_close() with a printf. 
> 
> 
> ok.

In libxl__build_post() I check the return value
of libxl__sched_set_params().
Now trying to start a guest results in this failure:

xc: info: VIRTUAL MEMORY ARRANGEMENT:
  Loader:        0000000000100000->000000000019bd04
  TOTAL:         0000000000000000->00000000ff800000
  ENTRY ADDRESS: 0000000000100000
xc: info: PHYSICAL MEMORY ALLOCATION:
  4KB PAGES: 0x0000000000000200
  2MB PAGES: 0x00000000000003fb
  1GB PAGES: 0x0000000000000002
libxl: error: libxl.c:3211:libxl_sched_credit_domain_set: Cpu weight out
of range, valid values are within range from 1 to 65535
libxl: error: libxl_create.c:694:domcreate_bootloader_done: cannot
(re-)build domain: -6
libxl: error: libxl_dm.c:1104:libxl__destroy_device_model: Couldn't find
device model's pid: No such file or directory
libxl: error: libxl.c:1162:libxl_domain_destroy:
libxl__destroy_device_model failed for 1
libxl: error: libxl.c:155:libxl_ctx_free: libxl_ctx_free: call
xs_daemon_close  <-- the printf annotation


Christoph


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