[root@astar ~]# xl -vvv create mars.xl
Parsing config from mars.xl
libxl: debug: libxl_create.c:1322:do_domain_create: ao 0x233c870: create: how=(nil) callback=(nil) poller=0x233ca10
libxl: debug: libxl_device.c:251:libxl__device_disk_set_backend: Disk vdev=hda spec.backend=unknown
libxl: debug: libxl_device.c:286:libxl__device_disk_set_backend: Disk vdev=hda, using backend phy
libxl: debug: libxl_create.c:777:initiate_domain_create: running bootloader
libxl: debug: libxl_bootloader.c:321:libxl__bootloader_run: not a PV domain, skipping bootloader
libxl: debug: libxl_event.c:607:libxl__ev_xswatch_deregister: watch w=0x23323b8: deregister unregistered
libxl: debug: libxl_numa.c:475:libxl__get_numa_candidate: New best NUMA placement candidate found: nr_nodes=1, nr_cpus=6, nr_vcpus=6, free_memkb=6039
libxl: detail: libxl_dom.c:195:numa_place_domain: NUMA placement candidate with 1 nodes, 6 cpus and 6039 KB free selected
xc: detail: elf_parse_binary: phdr: paddr=0x100000 memsz=0x9e704
xc: detail: elf_parse_binary: memory: 0x100000 -> 0x19e704
xc: detail: VIRTUAL MEMORY ARRANGEMENT:
  Loader:        0000000000100000->000000000019e704
  Modules:       0000000000000000->0000000000000000
  TOTAL:         0000000000000000->00000000ff800000
  ENTRY ADDRESS: 0000000000100000
xc: detail: PHYSICAL MEMORY ALLOCATION:
  4KB PAGES: 0x0000000000000200
  2MB PAGES: 0x00000000000003fb
  1GB PAGES: 0x0000000000000002
xc: detail: elf_load_binary: phdr 0 at 0x7fb2a74eb000 -> 0x7fb2a758058d
libxl: debug: libxl_device.c:251:libxl__device_disk_set_backend: Disk vdev=hda spec.backend=phy
libxl: debug: libxl_event.c:559:libxl__ev_xswatch_register: watch w=0x2334008 wpath=/local/domain/0/backend/vbd/5/768/state token=3/0: register slotnum=3
libxl: debug: libxl_create.c:1336:do_domain_create: ao 0x233c870: inprogress: poller=0x233ca10, flags=i
libxl: debug: libxl_event.c:503:watchfd_callback: watch w=0x2334008 wpath=/local/domain/0/backend/vbd/5/768/state token=3/0: event epath=/local/domain/0/backend/vbd/5/768/state
libxl: debug: libxl_event.c:646:devstate_watch_callback: backend /local/domain/0/backend/vbd/5/768/state wanted state 2 still waiting state 1
libxl: debug: libxl_event.c:503:watchfd_callback: watch w=0x2334008 wpath=/local/domain/0/backend/vbd/5/768/state token=3/0: event epath=/local/domain/0/backend/vbd/5/768/state
libxl: debug: libxl_event.c:642:devstate_watch_callback: backend /local/domain/0/backend/vbd/5/768/state wanted state 2 ok
libxl: debug: libxl_event.c:595:libxl__ev_xswatch_deregister: watch w=0x2334008 wpath=/local/domain/0/backend/vbd/5/768/state token=3/0: deregister slotnum=3
libxl: debug: libxl_event.c:607:libxl__ev_xswatch_deregister: watch w=0x2334008: deregister unregistered
libxl: debug: libxl_device.c:1022:device_hotplug: calling hotplug script: /etc/xen/scripts/block add
libxl: debug: libxl_event.c:607:libxl__ev_xswatch_deregister: watch w=0x2334090: deregister unregistered
libxl: debug: libxl_event.c:607:libxl__ev_xswatch_deregister: watch w=0x2334090: deregister unregistered
libxl: debug: libxl_dm.c:1303:libxl__spawn_local_dm: Spawning device-model /usr/bin/qemu-system-x86_64 with arguments:
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   /usr/bin/qemu-system-x86_64
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -xen-domid
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   5
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -chardev
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   socket,id=libxl-cmd,path=/var/run/xen/qmp-libxl-5,server,nowait
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -mon
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   chardev=libxl-cmd,mode=control
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -nodefaults
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -name
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   mars
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -vnc
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   127.0.0.1:0,to=99
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -k
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   en-us
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -serial
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   pty
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -device
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   cirrus-vga
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -global
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   vga.vram_size_mb=8
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -boot
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   order=c
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -usb
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -usbdevice
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   tablet
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -soundhw
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   es1370
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -smp
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   4,maxcpus=4
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -device
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   e1000,id=nic0,netdev=net0,mac=00:16:3e:f1:61:85
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -netdev
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   type=tap,id=net0,ifname=vif5.0-emu,script=no,downscript=no
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -machine
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   xenfv
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -m
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   4088
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   -drive
libxl: debug: libxl_dm.c:1305:libxl__spawn_local_dm:   file=/dev/astar_0/mars,if=ide,index=0,media=disk,format=raw,cache=writeback
libxl: debug: libxl_event.c:559:libxl__ev_xswatch_register: watch w=0x23325f0 wpath=/local/domain/0/device-model/5/state token=3/1: register slotnum=3
libxl: debug: libxl_event.c:503:watchfd_callback: watch w=0x23325f0 wpath=/local/domain/0/device-model/5/state token=3/1: event epath=/local/domain/0/device-model/5/state
libxl: debug: libxl_event.c:595:libxl__ev_xswatch_deregister: watch w=0x23325f0 wpath=/local/domain/0/device-model/5/state token=3/1: deregister slotnum=3
libxl: error: libxl_dm.c:1371:device_model_spawn_outcome: domain 5 device model: spawn failed (rc=-3)
libxl: error: libxl_create.c:1166:domcreate_devmodel_started: device model did not start: -3
libxl: error: libxl_dm.c:1475:kill_device_model: Device Model already exited
libxl: debug: libxl_event.c:559:libxl__ev_xswatch_register: watch w=0x2337568 wpath=/local/domain/0/backend/vbd/5/768/state token=3/2: register slotnum=3
libxl: debug: libxl_event.c:503:watchfd_callback: watch w=0x2337568 wpath=/local/domain/0/backend/vbd/5/768/state token=3/2: event epath=/local/domain/0/backend/vbd/5/768/state
libxl: debug: libxl_event.c:642:devstate_watch_callback: backend /local/domain/0/backend/vbd/5/768/state wanted state 6 ok
libxl: debug: libxl_event.c:595:libxl__ev_xswatch_deregister: watch w=0x2337568 wpath=/local/domain/0/backend/vbd/5/768/state token=3/2: deregister slotnum=3
libxl: debug: libxl_event.c:607:libxl__ev_xswatch_deregister: watch w=0x2337568: deregister unregistered
libxl: debug: libxl_device.c:1022:device_hotplug: calling hotplug script: /etc/xen/scripts/block remove
libxl: debug: libxl_event.c:472:watchfd_callback: watch epath=/local/domain/0/backend/vbd/5/768/state token=3/2: empty slot
libxl: debug: libxl_event.c:607:libxl__ev_xswatch_deregister: watch w=0x23375f0: deregister unregistered
libxl: debug: libxl_event.c:607:libxl__ev_xswatch_deregister: watch w=0x23375f0: deregister unregistered
libxl: debug: libxl_event.c:607:libxl__ev_xswatch_deregister: watch w=0x23377d0: deregister unregistered
libxl: debug: libxl_event.c:1560:libxl__ao_complete: ao 0x233c870: complete, rc=-3
libxl: debug: libxl_event.c:1532:libxl__ao__destroy: ao 0x233c870: destroy
xc: debug: hypercall buffer: total allocations:2619 total releases:2619
xc: debug: hypercall buffer: current allocations:0 maximum allocations:4
xc: debug: hypercall buffer: cache current size:4
xc: debug: hypercall buffer: cache hits:2611 misses:4 toobig:4
[root@astar ~]#