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



On 05/18/12 17:58, Ian Campbell wrote:

> 
>> In libxl__build_post() I check the return value
>> of libxl__sched_set_params().
> 
> The mesages about scheduler params are a known and benign issue.
> 
>> 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
> 
> Is your device model dying for some reason? Anything
> in /var/log/xen/*guest*.log about it?


The guest logfile doesn't exist. Does that mean the errors happens
before device model has been started at all?

> 
> You could try "xl -vvv cr ..." too, not sure what it will say.


libxl: debug: libxl_device.c:183:libxl__device_disk_set_backend: Disk
vdev=hda spec.backend=unknown
libxl: debug: libxl_device.c:219:libxl__device_disk_set_backend: Disk
vdev=hda, using backend phy
xc: detail: elf_parse_binary: phdr: paddr=0x100000 memsz=0x9bd04
xc: detail: elf_parse_binary: memory: 0x100000 -> 0x19bd04
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
xc: detail: elf_load_binary: phdr 0 at 0x0x7f7ff7f42000 -> 0x0x7f7ff7fd4b74
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 2
xc: debug: hypercall buffer: total allocations:1251 total releases:1251
xc: debug: hypercall buffer: current allocations:0 maximum allocations:2
xc: debug: hypercall buffer: cache current size:2
xc: debug: hypercall buffer: cache hits:1248 misses:2 toobig:1
libxl: error: libxl.c:155:libxl_ctx_free: libxl_ctx_free: call
xs_daemon_close   <-- the printf annotation


Christoph


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