Xen project Mailing List

Re: Network driver domain broken

To: Roger Pau Monné <roger.pau@xxxxxxxxxx>

From: Andrea Stevanato <andrea.stevanato@xxxxxxxxxxxxxxx>

Date: Fri, 4 Mar 2022 15:54:44 +0100

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Cc: Jason Andryuk <jandryuk@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, "wl@xxxxxxx" <wl@xxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>

Delivery-date: Fri, 04 Mar 2022 14:54:58 +0000

List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On 04/03/2022 14:46, Andrea Stevanato wrote: > On 3/4/2022 1:27 PM, Roger Pau Monné wrote: >> On Fri, Mar 04, 2022 at 01:05:55PM +0100, Andrea Stevanato wrote: >>> On 3/4/2022 12:52 PM, Roger Pau Monné wrote: >>>> On Thu, Mar 03, 2022 at 01:08:31PM -0500, Jason Andryuk wrote: >>>>> On Thu, Mar 3, 2022 at 11:34 AM Roger Pau Monné <roger.pau@xxxxxxxxxx> >>>>> wrote: >>>>>> >>>>>> On Thu, Mar 03, 2022 at 05:01:23PM +0100, Andrea Stevanato wrote: >>>>>>> On 03/03/2022 15:54, Andrea Stevanato wrote: >>>>>>>> Hi all, >>>>>>>> >>>>>>>> according to the conversation that I had with royger, aa67b97ed34 >>>>>>>> broke the driver domain support. >>>>>>>> >>>>>>>> What I'm trying to do is to setup networking between guests using >>>>>>>> driver domain. Therefore, the guest (driver) has been started with the >>>>>>>> following cfg. >>>>>>>> >>>>>>>> name = "guest0" >>>>>>>> kernel = "/media/sd-mmcblk0p1/Image" >>>>>>>> ramdisk = "/media/sd-mmcblk0p1/rootfs.cpio.gz" >>>>>>>> extra = "console=hvc0 rdinit=/sbin/init root=/dev/ram0" >>>>>>>> memory = 1024 vcpus = 2 >>>>>>>> driver_domain = 1 >>>>>>>> >>>>>>>> On guest0 I created the bridge, assigned a static IP and started the >>>>>>>> udhcpd on xenbr0 interface. >>>>>>>> While the second guest has been started with the following cfg: >>>>>>>> >>>>>>>> name = "guest1" >>>>>>>> kernel = "/media/sd-mmcblk0p1/Image" >>>>>>>> ramdisk = "/media/sd-mmcblk0p1/rootfs.cpio.gz" >>>>>>>> extra = "console=hvc0 rdinit=/sbin/init root=/dev/ram0" >>>>>>>> memory = 1024 vcpus = 2 >>>>>>>> vcpus = 2 >>>>>>>> vif = [ 'bridge=xenbr0, backend=guest0' ] >>>>>>>> >>>>>>>> Follows the result of strace xl devd: >>>>>>>> >>>>>>>> # strace xl devd >>>>>>>> execve("/usr/sbin/xl", ["xl", "devd"], 0xffffdf0420c8 /* 13 vars */) = >>>>>>>> 0 >>>>> >>>>>>>> ioctl(5, _IOC(_IOC_NONE, 0x50, 0, 0x30), 0xffffe6e41b40) = -1 EPERM >>>>>>>> (Operation not permitted) >>>>>>>> write(2, "libxl: ", 7libxl: ) = 7 >>>>>>>> write(2, "error: ", 7error: ) = 7 >>>>>>>> write(2, "libxl_utils.c:820:libxl_cpu_bitm"..., >>>>>>>> 87libxl_utils.c:820:libxl_cpu_bitmap_alloc: failed to retrieve the >>>>>>>> maximum number of cpus) = 87 >>>>>>>> write(2, "\n", 1 >>>>>>>> ) = 1 >>>>>>>> clone(child_stack=NULL, >>>>>>>> flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, >>>>>>>> child_tidptr=0xffff9ee7a0e0) = 814 >>>>>>>> wait4(814, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 814 >>>>>>>> --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=814, >>>>>>>> si_uid=0, si_status=0, si_utime=2, si_stime=2} --- >>>>> >>>>> xl devd is daemonizing, but strace is only following the first >>>>> process. Use `strace xl devd -F` to prevent the daemonizing (or >>>>> `strace -f xl devd` to follow children). >>>> >>>> Or as a first step try to see what kind of messages you get from `xl >>>> devd -F` when trying to attach a device using the driver domain. >>> >>> Nothing has changed. On guest0 (the driver domain): >>> >>> # xl devd -F >>> libxl: error: libxl_utils.c:820:libxl_cpu_bitmap_alloc: failed to retrieve >>> the maximum number of cpus >>> libxl: error: libxl_utils.c:820:libxl_cpu_bitmap_alloc: failed to retrieve >>> the maximum number of cpus >>> libxl: error: libxl_utils.c:820:libxl_cpu_bitmap_alloc: failed to retrieve >>> the maximum number of cpus >>> [ 696.805619] xenbr0: port 1(vif2.0) entered blocking state >>> [ 696.810334] xenbr0: port 1(vif2.0) entered disabled state >>> [ 696.824518] device vif2.0 entered promiscuous mode >> >> Can you use `xl -vvv devd -F` here? > > # xl -vvv devd -F > libxl: error: libxl_utils.c:820:libxl_cpu_bitmap_alloc: failed to retrieve > the maximum number of cpus > libxl: error: libxl_utils.c:820:libxl_cpu_bitmap_alloc: failed to retrieve > the maximum number of cpus > libxl: error: libxl_utils.c:820:libxl_cpu_bitmap_alloc: failed to retrieve > the maximum number of cpus > libxl: debug: libxl_device.c:1749:libxl_device_events_handler: ao > 0xaaaaece52130: create: how=(nil) callback=(nil) poller=0xaaaaece52430 > libxl: debug: libxl_event.c:813:libxl__ev_xswatch_register: watch > w=0xffffe628caf8 wpath=/local/domain/1/backend token=3/0: register slotnum=3 > libxl: debug: libxl_device.c:1806:libxl_device_events_handler: ao > 0xaaaaece52130: inprogress: poller=0xaaaaece52430, flags=i > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event epath=/local/domain/1/backend > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece51b90: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece51b90: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0 > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece4e7b0: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece4e7b0: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2 > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece4e990: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece4e990: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/frontend > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece4eaa0: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece4eaa0: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/frontend-id > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece4ebb0: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece4ebb0: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/online > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece52830: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_device.c:1714:backend_watch_callback: Domain 2:Added > domain to the list of active guests > libxl: debug: libxl_device.c:1569:add_device: Domain 2:Added device > /local/domain/1/backend/vif/2/0 to the list of active devices > libxl: debug: libxl_event.c:813:libxl__ev_xswatch_register: watch > w=0xaaaaece52a10 wpath=/local/domain/1/backend/vif/2/0/state token=2/1: > register slotnum=2 > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/state > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece52d50: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/script > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece52f30: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece52f30: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/mac > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece53110: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece53110: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/bridge > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece53110: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece53110: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/handle > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece53110: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece53110: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/type > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece53110: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece53110: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/feature-sg > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece53110: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece53110: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/feature-gso-tcpv4 > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece53110: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece53110: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/feature-gso-tcpv6 > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece53110: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece53110: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/feature-ipv6-csum-offload > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece53110: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece53110: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/feature-rx-copy > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece53110: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece53110: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/feature-xdp-headroom > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece53110: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece53110: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/feature-rx-flip > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece53110: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece53110: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/feature-multicast-control > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece53110: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece53110: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/feature-dynamic-multicast-control > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece53110: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece53110: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/feature-split-event-channels > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece53110: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece53110: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/multi-queue-max-queues > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece53110: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece53110: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/feature-ctrl-ring > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece53110: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece53110: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/feature-sg > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece53110: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece53110: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0 > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece53110: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece53110: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/feature-gso-tcpv4 > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece53110: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece53110: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/feature-gso-tcpv6 > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece53110: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece53110: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/feature-ipv6-csum-offload > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece53110: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece53110: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/feature-rx-copy > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece53110: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece53110: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/feature-xdp-headroom > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece53110: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece53110: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/feature-rx-flip > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece53110: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece53110: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/feature-multicast-control > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece53110: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece53110: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/feature-dynamic-multicast-control > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece53110: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece53110: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/feature-split-event-channels > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece53110: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece53110: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/multi-queue-max-queues > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece53110: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece53110: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/feature-ctrl-ring > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece53110: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaaece53110: > destroy > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/state > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece53110: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xaaaaece52a10 > wpath=/local/domain/1/backend/vif/2/0/state token=2/1: event > epath=/local/domain/1/backend/vif/2/0/state > libxl: debug: libxl_event.c:1055:devstate_callback: backend > /local/domain/1/backend/vif/2/0/state wanted state 2 still waiting state 5 > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/state > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece53fa0: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xaaaaece52a10 > wpath=/local/domain/1/backend/vif/2/0/state token=2/1: event > epath=/local/domain/1/backend/vif/2/0/state > libxl: debug: libxl_event.c:1055:devstate_callback: backend > /local/domain/1/backend/vif/2/0/state wanted state 2 still waiting state 5 > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xffffe628caf8 > wpath=/local/domain/1/backend token=3/0: event > epath=/local/domain/1/backend/vif/2/0/state > libxl: debug: libxl_event.c:2445:libxl__nested_ao_create: ao 0xaaaaece54180: > nested ao, parent 0xaaaaece52130 > libxl: debug: libxl_event.c:750:watchfd_callback: watch w=0xaaaaece52a10 > wpath=/local/domain/1/backend/vif/2/0/state token=2/1: event > epath=/local/domain/1/backend/vif/2/0/state > libxl: debug: libxl_event.c:1055:devstate_callback: backend > /local/domain/1/backend/vif/2/0/state wanted state 2 still waiting state 6 There were one piece missing, I copied-pasted too early. libxl: debug: libxl_aoutils.c:88:xswait_timeout_callback: backend /local/domain/1/backend/vif/2/0/state (hoping for state change to 2): xswait timeout (path=/local/domain/1/backend/vif/2/0/state) libxl: debug: libxl_event.c:850:libxl__ev_xswatch_deregister: watch w=0xaaaadbbd3a10 wpath=/local/domain/1/backend/vif/2/0/state token=2/1: deregister slotnum=2 libxl: debug: libxl_event.c:1039:devstate_callback: backend /local/domain/1/backend/vif/2/0/state wanted state 2 timed out libxl: debug: libxl_event.c:864:libxl__ev_xswatch_deregister: watch w=0xaaaadbbd3a10: deregister unregistered libxl: debug: libxl_device.c:1090:device_backend_callback: Domain 2:calling device_backend_cleanup libxl: debug: libxl_event.c:864:libxl__ev_xswatch_deregister: watch w=0xaaaadbbd3a10: deregister unregistered libxl: error: libxl_device.c:1103:device_backend_callback: Domain 2:unable to add device with path /local/domain/1/backend/vif/2/0 libxl: debug: libxl_event.c:864:libxl__ev_xswatch_deregister: watch w=0xaaaadbbd3b10: deregister unregistered libxl: debug: libxl_device.c:1444:device_complete: device /local/domain/1/backend/vif/2/0 add failed libxl: debug: libxl_event.c:2035:libxl__ao__destroy: ao 0xaaaadbbd3830: destroy >> I assume the process doesn't die unexpectedly? > > No, it does not. > >> Thanks, Roger. > > Regards, > Andrea Andrea

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