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[Xen-devel] 答复: 答复: 答复: Re: Help:Can xen restore several snapshots more faster at same time?


  • To: Wei Liu <wei.liu2@xxxxxxxxxx>
  • From: "Chenjia (C)" <chenjia09@xxxxxxxxxx>
  • Date: Tue, 28 Nov 2017 01:38:34 +0000
  • Accept-language: zh-CN, en-US
  • Cc: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
  • Delivery-date: Tue, 28 Nov 2017 01:39:15 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
  • Thread-index: AQHTVupsaS3SYm1eW0arnpysYuClQ6MO6tLwgAAJO1CAAw8zIP//kpqAgBat8cD//4HTgIABXo4g
  • Thread-topic: 答复: 答复: Re: [Xen-devel] Help:Can xen restore several snapshots more faster at same time?

linux-lv5f:/home/huawei/vm/win7_x64 # Parsing config from win7_40.cfg
WARNING: you seem to be using "kernel" directive to override HVM guest 
firmware. Ignore that. Use "firmware_override" instead if you really want a 
non-default firmware
libxl: debug: libxl_create.c:1614:do_domain_create: ao 0xc43120: create: 
how=(nil) callback=(nil) poller=0xc395c0
libxl: debug: libxl_device.c:361:libxl__device_disk_set_backend: Disk vdev=xvda 
spec.backend=unknown
libxl: debug: libxl_device.c:324:disk_try_backend: Disk vdev=xvda, backend phy 
unsuitable due to format qcow2
libxl: debug: libxl_device.c:396:libxl__device_disk_set_backend: Disk 
vdev=xvda, using backend qdisk
libxl: debug: libxl_create.c:970:initiate_domain_create: running bootloader
libxl: debug: libxl_bootloader.c:324:libxl__bootloader_run: not a PV domain, 
skipping bootloader
libxl: debug: libxl_event.c:686:libxl__ev_xswatch_deregister: watch w=0xc3a0d0: 
deregister unregistered
libxl: debug: libxl_numa.c:502:libxl__get_numa_candidate: New best NUMA 
placement candidate found: nr_nodes=1, nr_cpus=12, nr_vcpus=13, free_memkb=2014
libxl: debug: libxl_numa.c:502:libxl__get_numa_candidate: New best NUMA 
placement candidate found: nr_nodes=1, nr_cpus=12, nr_vcpus=1, free_memkb=43799
libxl: detail: libxl_dom.c:182:numa_place_domain: NUMA placement candidate with 
1 nodes, 12 cpus and 43799 KB free selected
domainbuilder: detail: xc_dom_allocate: cmdline="(null)", features="(null)"
domainbuilder: detail: xc_dom_kernel_file: 
filename="/usr/lib/xen/boot/hvmloader"
domainbuilder: detail: xc_dom_malloc_filemap    : 463 kB
libxl: debug: libxl_dom.c:884:libxl__load_hvm_firmware_module: Loading BIOS: 
/usr/lib/xen/boot/seabios.bin
domainbuilder: detail: xc_dom_boot_xen_init: ver 4.8, caps xen-3.0-x86_64 
xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64 
domainbuilder: detail: xc_dom_parse_image: called
domainbuilder: detail: xc_dom_find_loader: trying multiboot-binary loader ... 
domainbuilder: detail: loader probe failed
domainbuilder: detail: xc_dom_find_loader: trying HVM-generic loader ... 
domainbuilder: detail: loader probe OK
xc: detail: ELF: phdr: paddr=0x100000 memsz=0x7bdc4
xc: detail: ELF: memory: 0x100000 -> 0x17bdc4
domainbuilder: detail: xc_dom_mem_init: mem 1016 MB, pages 0x3f800 pages, 4k 
each
domainbuilder: detail: xc_dom_mem_init: 0x3f800 pages
domainbuilder: detail: xc_dom_boot_mem_init: called
domainbuilder: detail: xc_dom_malloc            : 2032 kB
xc: detail: PHYSICAL MEMORY ALLOCATION:
xc: detail:   4KB PAGES: 0x0000000000000200
xc: detail:   2MB PAGES: 0x00000000000001fb
xc: detail:   1GB PAGES: 0x0000000000000000
domainbuilder: detail: xc_dom_build_image: called
domainbuilder: detail: xc_dom_pfn_to_ptr_retcount: domU mapping: pfn 0x100+0x7c 
at 0x7fd11a3e0000
domainbuilder: detail: xc_dom_alloc_segment:   kernel       : 0x100000 -> 
0x17c000  (pfn 0x100 + 0x7c pages)
xc: detail: ELF: phdr 0 at 0x7fd11a364000 -> 0x7fd11a3d6220
domainbuilder: detail: xc_dom_pfn_to_ptr_retcount: domU mapping: pfn 0x17c+0x40 
at 0x7fd11a3a0000
domainbuilder: detail: xc_dom_alloc_segment:   System Firmware module : 
0x17c000 -> 0x1bc000  (pfn 0x17c + 0x40 pages)
domainbuilder: detail: xc_dom_pfn_to_ptr_retcount: domU mapping: pfn 0x1bc+0x1 
at 0x7fd11a535000
domainbuilder: detail: xc_dom_alloc_segment:   HVM start info : 0x1bc000 -> 
0x1bd000  (pfn 0x1bc + 0x1 pages)
domainbuilder: detail: alloc_pgtables_hvm: doing nothing
domainbuilder: detail: xc_dom_build_image  : virt_alloc_end : 0x1bd000
domainbuilder: detail: xc_dom_build_image  : virt_pgtab_end : 0x0
domainbuilder: detail: xc_dom_boot_image: called
domainbuilder: detail: bootearly: doing nothing
domainbuilder: detail: xc_dom_compat_check: supported guest type: xen-3.0-x86_64
domainbuilder: detail: xc_dom_compat_check: supported guest type: 
xen-3.0-x86_32p
domainbuilder: detail: xc_dom_compat_check: supported guest type: 
hvm-3.0-x86_32 <= matches
domainbuilder: detail: xc_dom_compat_check: supported guest type: 
hvm-3.0-x86_32p
domainbuilder: detail: xc_dom_compat_check: supported guest type: hvm-3.0-x86_64
domainbuilder: detail: clear_page: pfn 0xfefff, mfn 0xfefff
domainbuilder: detail: clear_page: pfn 0xfeffc, mfn 0xfeffc
domainbuilder: detail: domain builder memory footprint
domainbuilder: detail:    allocated
domainbuilder: detail:       malloc             : 2039 kB
domainbuilder: detail:       anon mmap          : 0 bytes
domainbuilder: detail:    mapped
domainbuilder: detail:       file mmap          : 463 kB
domainbuilder: detail:       domU mmap          : 756 kB
domainbuilder: detail: vcpu_hvm: called
domainbuilder: detail: xc_dom_gnttab_hvm_seed: called, pfn=0xff000
domainbuilder: detail: xc_dom_gnttab_hvm_seed: called, pfn=0xff001
domainbuilder: detail: xc_dom_release: called
libxl: debug: libxl_device.c:361:libxl__device_disk_set_backend: Disk vdev=xvda 
spec.backend=qdisk
libxl: debug: libxl_linux.c:221:libxl__get_hotplug_script_info: backend_kind 3, 
no need to execute scripts
libxl: debug: libxl_device.c:1143:device_hotplug: No hotplug script to execute
libxl: debug: libxl_event.c:686:libxl__ev_xswatch_deregister: watch w=0xc3c100: 
deregister unregistered
libxl: debug: libxl.c:2899:libxl__device_disk_find_local_path: Directly 
accessing local QDISK target /home/huawei/vm/win7_x64/win7_work40.qcow2
libxl: debug: libxl_dm.c:1500:libxl__build_device_model_args_new: Could not 
find user xen-qemuuser-shared, starting QEMU as root
libxl: debug: libxl_dm.c:2094:libxl__spawn_local_dm: Spawning device-model 
/usr/lib/xen/bin/qemu-system-i386 with arguments:
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   
/usr/lib/xen/bin/qemu-system-i386
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   -xen-domid
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   10
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   -chardev
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   
socket,id=libxl-cmd,path=/var/run/xen/qmp-libxl-10,server,nowait
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   -no-shutdown
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   -mon
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   
chardev=libxl-cmd,mode=control
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   -chardev
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   
socket,id=libxenstat-cmd,path=/var/run/xen/qmp-libxenstat-10,server,nowait
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   -mon
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   
chardev=libxenstat-cmd,mode=control
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   -nodefaults
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   -no-user-config
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   -name
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   aap_40
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   -vnc
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   0.0.0.0:0,to=99
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   -display
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   none
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   -device
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   cirrus-vga,vgamem_mb=8
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   -boot
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   order=cd
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   -usb
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   -usbdevice
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   tablet
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   -device
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   
rtl8139,id=nic0,netdev=net0,mac=18:c5:8a:15:c1:39
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   -netdev
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   
type=tap,id=net0,ifname=vif10.0-emu,script=no,downscript=no
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   -machine
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   xenfv
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   -m
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   1016
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   -drive
libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   
file=/home/huawei/vm/win7_x64/win7_work40.qcow2,if=ide,index=0,media=disk,format=qcow2,cache=writeback
libxl: debug: libxl_dm.c:2098:libxl__spawn_local_dm: Spawning device-model 
/usr/lib/xen/bin/qemu-system-i386 with additional environment:
libxl: debug: libxl_dm.c:2100:libxl__spawn_local_dm:   
XEN_QEMU_CONSOLE_LIMIT=1048576
libxl: debug: libxl_event.c:636:libxl__ev_xswatch_register: watch w=0xc3a3c8 
wpath=/local/domain/0/device-model/10/state token=3/0: register slotnum=3
libxl: debug: libxl_create.c:1640:do_domain_create: ao 0xc43120: inprogress: 
poller=0xc395c0, flags=i
libxl: debug: libxl_event.c:573:watchfd_callback: watch w=0xc3a3c8 
wpath=/local/domain/0/device-model/10/state token=3/0: event 
epath=/local/domain/0/device-model/10/state
libxl: debug: libxl_exec.c:398:spawn_watch_event: domain 10 device model: spawn 
watch p=(null)
libxl: debug: libxl_event.c:573:watchfd_callback: watch w=0xc3a3c8 
wpath=/local/domain/0/device-model/10/state token=3/0: event 
epath=/local/domain/0/device-model/10/state
libxl: debug: libxl_exec.c:398:spawn_watch_event: domain 10 device model: spawn 
watch p=running
libxl: debug: libxl_event.c:673:libxl__ev_xswatch_deregister: watch w=0xc3a3c8 
wpath=/local/domain/0/device-model/10/state token=3/0: deregister slotnum=3
libxl: debug: libxl_exec.c:129:libxl_report_child_exitstatus: domain 10 device 
model (dying as expected) [11682] died due to fatal signal Killed
libxl: debug: libxl_event.c:686:libxl__ev_xswatch_deregister: watch w=0xc3a3c8: 
deregister unregistered
libxl: debug: libxl_qmp.c:707:libxl__qmp_initialize: connected to 
/var/run/xen/qmp-libxl-10
libxl: debug: libxl_qmp.c:296:qmp_handle_response: message type: qmp
libxl: debug: libxl_qmp.c:556:qmp_send_prepare: next qmp command: '{
    "execute": "qmp_capabilities",
    "id": 1
}
'
libxl: debug: libxl_qmp.c:296:qmp_handle_response: message type: return
libxl: debug: libxl_qmp.c:556:qmp_send_prepare: next qmp command: '{
    "execute": "query-chardev",
    "id": 2
}
'
libxl: debug: libxl_qmp.c:296:qmp_handle_response: message type: return
libxl: debug: libxl_qmp.c:556:qmp_send_prepare: next qmp command: '{
    "execute": "query-vnc",
    "id": 3
}
'
libxl: debug: libxl_qmp.c:296:qmp_handle_response: message type: return
libxl: debug: libxl_event.c:636:libxl__ev_xswatch_register: watch w=0xc41c40 
wpath=/local/domain/0/backend/vif/10/0/state token=3/1: register slotnum=3
libxl: debug: libxl_event.c:573:watchfd_callback: watch w=0xc41c40 
wpath=/local/domain/0/backend/vif/10/0/state token=3/1: event 
epath=/local/domain/0/backend/vif/10/0/state
libxl: debug: libxl_event.c:878:devstate_callback: backend 
/local/domain/0/backend/vif/10/0/state wanted state 2 still waiting state 1
libxl: debug: libxl_event.c:573:watchfd_callback: watch w=0xc41c40 
wpath=/local/domain/0/backend/vif/10/0/state token=3/1: event 
epath=/local/domain/0/backend/vif/10/0/state
libxl: debug: libxl_event.c:874:devstate_callback: backend 
/local/domain/0/backend/vif/10/0/state wanted state 2 ok
libxl: debug: libxl_event.c:673:libxl__ev_xswatch_deregister: watch w=0xc41c40 
wpath=/local/domain/0/backend/vif/10/0/state token=3/1: deregister slotnum=3
libxl: debug: libxl_device.c:1059:device_backend_callback: calling 
device_backend_cleanup
libxl: debug: libxl_event.c:686:libxl__ev_xswatch_deregister: watch w=0xc41c40: 
deregister unregistered
libxl: debug: libxl_device.c:1157:device_hotplug: calling hotplug script: 
/etc/xen/scripts/vif-bridge online
libxl: debug: libxl_device.c:1158:device_hotplug: extra args:
libxl: debug: libxl_device.c:1164:device_hotplug:       type_if=vif
libxl: debug: libxl_device.c:1166:device_hotplug: env:
libxl: debug: libxl_device.c:1173:device_hotplug:       script: 
/etc/xen/scripts/vif-bridge
libxl: debug: libxl_device.c:1173:device_hotplug:       XENBUS_TYPE: vif
libxl: debug: libxl_device.c:1173:device_hotplug:       XENBUS_PATH: 
backend/vif/10/0
libxl: debug: libxl_device.c:1173:device_hotplug:       XENBUS_BASE_PATH: 
backend
libxl: debug: libxl_device.c:1173:device_hotplug:       netdev: 
libxl: debug: libxl_device.c:1173:device_hotplug:       INTERFACE: vif10.0-emu
libxl: debug: libxl_device.c:1173:device_hotplug:       vif: vif10.0
libxl: debug: libxl_aoutils.c:593:libxl__async_exec_start: forking to execute: 
/etc/xen/scripts/vif-bridge online 
libxl: error: libxl_exec.c:118:libxl_report_child_exitstatus: 
/etc/xen/scripts/vif-bridge online [11694] exited with error status 127
libxl: debug: libxl_event.c:686:libxl__ev_xswatch_deregister: watch w=0xc41d40: 
deregister unregistered
libxl: debug: libxl_event.c:686:libxl__ev_xswatch_deregister: watch w=0xc41d40: 
deregister unregistered
libxl: error: libxl_create.c:1461:domcreate_attach_devices: unable to add nic 
devices
libxl: debug: libxl_dm.c:2306:kill_device_model: Device Model signaled
libxl: debug: libxl_event.c:636:libxl__ev_xswatch_register: watch w=0xc40960 
wpath=/local/domain/0/backend/vif/10/0/state token=3/2: register slotnum=3
libxl: debug: libxl_event.c:573:watchfd_callback: watch w=0xc40960 
wpath=/local/domain/0/backend/vif/10/0/state token=3/2: event 
epath=/local/domain/0/backend/vif/10/0/state
libxl: debug: libxl_event.c:878:devstate_callback: backend 
/local/domain/0/backend/vif/10/0/state wanted state 6 still waiting state 5
libxl: debug: libxl_event.c:573:watchfd_callback: watch w=0xc40960 
wpath=/local/domain/0/backend/vif/10/0/state token=3/2: event 
epath=/local/domain/0/backend/vif/10/0/state
libxl: debug: libxl_event.c:874:devstate_callback: backend 
/local/domain/0/backend/vif/10/0/state wanted state 6 ok
libxl: debug: libxl_event.c:673:libxl__ev_xswatch_deregister: watch w=0xc40960 
wpath=/local/domain/0/backend/vif/10/0/state token=3/2: deregister slotnum=3
libxl: debug: libxl_device.c:1059:device_backend_callback: calling 
device_backend_cleanup
libxl: debug: libxl_event.c:686:libxl__ev_xswatch_deregister: watch w=0xc40960: 
deregister unregistered
libxl: debug: libxl_device.c:1157:device_hotplug: calling hotplug script: 
/etc/xen/scripts/vif-bridge offline
libxl: debug: libxl_device.c:1158:device_hotplug: extra args:
libxl: debug: libxl_device.c:1164:device_hotplug:       type_if=vif
libxl: debug: libxl_device.c:1166:device_hotplug: env:
libxl: debug: libxl_device.c:1173:device_hotplug:       script: 
/etc/xen/scripts/vif-bridge
libxl: debug: libxl_device.c:1173:device_hotplug:       XENBUS_TYPE: vif
libxl: debug: libxl_device.c:1173:device_hotplug:       XENBUS_PATH: 
backend/vif/10/0
libxl: debug: libxl_device.c:1173:device_hotplug:       XENBUS_BASE_PATH: 
backend
libxl: debug: libxl_device.c:1173:device_hotplug:       netdev: 
libxl: debug: libxl_device.c:1173:device_hotplug:       INTERFACE: vif10.0-emu
libxl: debug: libxl_device.c:1173:device_hotplug:       vif: vif10.0
libxl: debug: libxl_aoutils.c:593:libxl__async_exec_start: forking to execute: 
/etc/xen/scripts/vif-bridge offline 
libxl: debug: libxl_event.c:542:watchfd_callback: watch 
epath=/local/domain/0/backend/vif/10/0/state token=3/2: empty slot
libxl: debug: libxl_event.c:686:libxl__ev_xswatch_deregister: watch w=0xc40a60: 
deregister unregistered
libxl: debug: libxl_device.c:1157:device_hotplug: calling hotplug script: 
/etc/xen/scripts/vif-bridge remove
libxl: debug: libxl_device.c:1158:device_hotplug: extra args:
libxl: debug: libxl_device.c:1164:device_hotplug:       type_if=tap
libxl: debug: libxl_device.c:1166:device_hotplug: env:
libxl: debug: libxl_device.c:1173:device_hotplug:       script: 
/etc/xen/scripts/vif-bridge
libxl: debug: libxl_device.c:1173:device_hotplug:       XENBUS_TYPE: vif
libxl: debug: libxl_device.c:1173:device_hotplug:       XENBUS_PATH: 
backend/vif/10/0
libxl: debug: libxl_device.c:1173:device_hotplug:       XENBUS_BASE_PATH: 
backend
libxl: debug: libxl_device.c:1173:device_hotplug:       netdev: 
libxl: debug: libxl_device.c:1173:device_hotplug:       INTERFACE: vif10.0-emu
libxl: debug: libxl_device.c:1173:device_hotplug:       vif: vif10.0
libxl: debug: libxl_aoutils.c:593:libxl__async_exec_start: forking to execute: 
/etc/xen/scripts/vif-bridge remove 
libxl: debug: libxl_event.c:686:libxl__ev_xswatch_deregister: watch w=0xc40a60: 
deregister unregistered
libxl: debug: libxl_linux.c:213:libxl__get_hotplug_script_info: num_exec 2, not 
running hotplug scripts
libxl: debug: libxl_device.c:1143:device_hotplug: No hotplug script to execute
libxl: debug: libxl_event.c:686:libxl__ev_xswatch_deregister: watch w=0xc40a60: 
deregister unregistered
libxl: debug: libxl_linux.c:221:libxl__get_hotplug_script_info: backend_kind 3, 
no need to execute scripts
libxl: debug: libxl_device.c:1143:device_hotplug: No hotplug script to execute
libxl: debug: libxl_event.c:686:libxl__ev_xswatch_deregister: watch w=0xc3e1a0: 
deregister unregistered
libxl: debug: libxl_linux.c:221:libxl__get_hotplug_script_info: backend_kind 6, 
no need to execute scripts
libxl: debug: libxl_device.c:1143:device_hotplug: No hotplug script to execute
libxl: debug: libxl_event.c:686:libxl__ev_xswatch_deregister: watch w=0xc406a0: 
deregister unregistered
libxl: debug: libxl.c:1712:devices_destroy_cb: forked pid 11834 for destroy of 
domain 10
libxl: debug: libxl_event.c:1869:libxl__ao_complete: ao 0xc43120: complete, 
rc=-3
libxl: debug: libxl_event.c:1838:libxl__ao__destroy: ao 0xc43120: destroy
libxl: debug: libxl.c:1445:libxl_domain_destroy: ao 0xc3b6a0: create: how=(nil) 
callback=(nil) poller=0xc395c0
libxl: error: libxl.c:1575:libxl__destroy_domid: non-existant domain 10
libxl: error: libxl.c:1534:domain_destroy_callback: unable to destroy guest 
with domid 10
libxl: error: libxl.c:1463:domain_destroy_cb: destruction of domain 10 failed
libxl: debug: libxl_event.c:1869:libxl__ao_complete: ao 0xc3b6a0: complete, 
rc=-21
libxl: debug: libxl.c:1454:libxl_domain_destroy: ao 0xc3b6a0: inprogress: 
poller=0xc395c0, flags=ic
libxl: debug: libxl_event.c:1838:libxl__ao__destroy: ao 0xc3b6a0: destroy
xencall:buffer: debug: total allocations:512 total releases:512
xencall:buffer: debug: current allocations:0 maximum allocations:3
xencall:buffer: debug: cache current size:3
xencall:buffer: debug: cache hits:490 misses:3 toobig:19



in the /var/log/message, have following message
2017-11-28T18:05:12.505919+08:00 linux-lv5f root: /etc/xen/scripts/vif-bridge: 
online type_if=vif XENBUS_PATH=backend/vif/11/0
2017-11-28T18:05:12.590404+08:00 linux-lv5f root: /etc/xen/scripts/vif-bridge: 
offline type_if=vif XENBUS_PATH=backend/vif/11/0
2017-11-28T18:05:12.621806+08:00 linux-lv5f root: /etc/xen/scripts/vif-bridge: 
brctl delif virbr0 vif11.0 failed
2017-11-28T18:05:12.632249+08:00 linux-lv5f root: /etc/xen/scripts/vif-bridge: 
ifconfig vif11.0 down failed
2017-11-28T18:05:12.654086+08:00 linux-lv5f root: /etc/xen/scripts/vif-bridge: 
Successful vif-bridge offline for vif11.0, bridge virbr0.
2017-11-28T18:05:12.680121+08:00 linux-lv5f root: /etc/xen/scripts/vif-bridge: 
remove type_if=tap XENBUS_PATH=backend/vif/11/0
2017-11-28T18:05:12.727256+08:00 linux-lv5f root: /etc/xen/scripts/vif-bridge: 
Successful vif-bridge remove for vif11.0-emu, bridge virbr0.



Thank you , wish for your reply.



-----邮件原件-----
发件人: Wei Liu [mailto:wei.liu2@xxxxxxxxxx] 
发送时间: 2017年11月27日 20:40
收件人: Chenjia (C) <chenjia09@xxxxxxxxxx>
抄送: Wei Liu <wei.liu2@xxxxxxxxxx>; xen-devel@xxxxxxxxxxxxxxxxxxxx
主题: Re: 答复: 答复: Re: [Xen-devel] Help:Can xen restore several snapshots more 
faster at same time?

On Mon, Nov 27, 2017 at 12:35:26PM +0000, Chenjia (C) wrote:
> when we use the Xen4.8.7(we compile from the source and install on SUSE 12 ), 
> if we create the VM, we got the error information:
> 
> libxl: error: libxl_exec.c:118:libxl_report_child_exitstatus: 
> /etc/xen/scripts/vif-bridge online [8284] exited with error status 127
> libxl: error: libxl_create.c:1461:domcreate_attach_devices: unable to 
> add nic devices
> 

Use  xl -vvv create to get more logs. Fundamentally the script failed, but 
there is not enough information to tell why it failed.
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