Re: [Xen-users] HVM domU on storage driver domain

[Roger Pau Monné <roger.pau@xxxxxxxxxx>]

On Wed, Jan 25, 2017 at 02:17:39AM +0800, G.R. wrote:
> On Fri, Jan 20, 2017 at 7:39 PM, Roger Pau Monné <roger.pau@xxxxxxxxxx> wrote:
> >
> > Hello,
> >
> > Could you please fix your mail client so that it properly quotes messages?
> > Not adding ">" to quotes makes it hard to follow the conversation.
> For unknown reason, gmail is using html mode... Should be fixed now.
> Sorry for the inconvenience.
> 
> > > Do you have any suggestion about what I should do next to help
> > > understanding the situation here?
> >
> > Can you provide the output with `xl -vvv ...`? That will be more verbose.
> >
> Please find the xl log in the attachment.
> Thanks!

Sorry, I'm quite busy ATM and I don't have time to setup an environment in
order to try to reproduce your failure.

[...]
> libxl: debug: libxl_device.c:361:libxl__device_disk_set_backend: Disk 
> vdev=xvda spec.backend=phy
> libxl: debug: libxl_device.c:270:disk_try_backend: Disk vdev=xvda, is using a 
> storage driver domain, skipping physical device check
> libxl: debug: libxl_event.c:636:libxl__ev_xswatch_register: watch 
> w=0x56365a68a700 wpath=/local/domain/1/backend/vbd/92/51712/state token=3/1: 
> register slotnum=3
> libxl: debug: libxl_event.c:573:watchfd_callback: watch w=0x56365a68a700 
> wpath=/local/domain/1/backend/vbd/92/51712/state token=3/1: event 
> epath=/local/domain/1/backend/vbd/92/51712/state
> libxl: debug: libxl_event.c:878:devstate_callback: backend 
> /local/domain/1/backend/vbd/92/51712/state wanted state 2 still waiting state 
> 1
> libxl: debug: libxl_event.c:573:watchfd_callback: watch w=0x56365a68a700 
> wpath=/local/domain/1/backend/vbd/92/51712/state token=3/1: event 
> epath=/local/domain/1/backend/vbd/92/51712/state
> libxl: debug: libxl_event.c:874:devstate_callback: backend 
> /local/domain/1/backend/vbd/92/51712/state wanted state 2 ok
> libxl: debug: libxl_event.c:673:libxl__ev_xswatch_deregister: watch 
> w=0x56365a68a700 wpath=/local/domain/1/backend/vbd/92/51712/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=0x56365a68a700: deregister unregistered
> libxl: debug: libxl_device.c:1114:device_hotplug: Backend domid 1, domid 0, 
> assuming driver domains
> libxl: debug: libxl_device.c:1117:device_hotplug: Not a remove, not executing 
> hotplug scripts
> libxl: debug: libxl_event.c:686:libxl__ev_xswatch_deregister: watch 
> w=0x56365a68a800: deregister unregistered
> libxl: debug: libxl_dm.c:2094:libxl__spawn_local_dm: Spawning device-model 
> /usr/local/lib/xen/bin/qemu-dm with arguments:
> libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   
> /usr/local/lib/xen/bin/qemu-dm
> libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   -d
> libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   92
> libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   -domain-name
> libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   ruibox-dm
> 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
> libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   -vncunused
> libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   -M
> libxl: debug: libxl_dm.c:2096:libxl__spawn_local_dm:   xenpv
> libxl: debug: libxl_dm.c:2098:libxl__spawn_local_dm: Spawning device-model 
> /usr/local/lib/xen/bin/qemu-dm 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=0x56365a684860 wpath=/local/domain/0/device-model/92/state token=3/2: 
> register slotnum=3
> libxl: debug: libxl_event.c:573:watchfd_callback: watch w=0x56365a684860 
> wpath=/local/domain/0/device-model/92/state token=3/2: event 
> epath=/local/domain/0/device-model/92/state
> libxl: debug: libxl_exec.c:398:spawn_watch_event: domain 92 device model: 
> spawn watch p=(null)
> libxl: debug: libxl_event.c:573:watchfd_callback: watch w=0x56365a684860 
> wpath=/local/domain/0/device-model/92/state token=3/2: event 
> epath=/local/domain/0/device-model/92/state
> libxl: debug: libxl_exec.c:398:spawn_watch_event: domain 92 device model: 
> spawn watch p=running
> libxl: debug: libxl_event.c:673:libxl__ev_xswatch_deregister: watch 
> w=0x56365a684860 wpath=/local/domain/0/device-model/92/state token=3/2: 
> deregister slotnum=3
> libxl: debug: libxl_exec.c:129:libxl_report_child_exitstatus: domain 92 
> device model (dying as expected) [733] died due to fatal signal Killed

This seems suspicious, you shouldn't need a device-model for the subdomain
itself, can you please paste your domain config file?

Roger.

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