Re: [Xen-devel] execute hotplug scripts from libxl v10

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

With this version I get a timeout when destroying an HVM guest which
uses stub domains. The timeout seems to be waiting for the stub domain's
non-primary consoles to move to state 6. I know that console 0 of a PV
domain is special (and doesn't follow the usual state machine) but this
is console 1,2 & 3 which I thought did. Perhaps Stefano can shed some
light?

I'm pretty certain this wasn't happening with the latest version of this
series I was using, which was either v8 or v9 IIRC.

Ian.


quartz:~# xl -vvv dest dHVM-1
libxl: debug: libxl.c:1262:libxl_domain_destroy: ao 0x8069688: create: 
how=(nil) callback=(nil) poller=0x80696c8
libxl: debug: libxl_dm.c:1228:libxl__destroy_device_model: Device Model signaled
libxl: debug: libxl_event.c:512:libxl__ev_xswatch_register: watch w=0x806b02c 
wpath=/local/domain/0/backend/vbd/69/768/state token=3/0: register slotnum=3
libxl: debug: libxl_event.c:512:libxl__ev_xswatch_register: watch w=0x806b24c 
wpath=/local/domain/0/backend/console/69/1/state token=2/1: register slotnum=2
libxl: debug: libxl_event.c:512:libxl__ev_xswatch_register: watch w=0x806b2d4 
wpath=/local/domain/0/backend/console/69/2/state token=1/2: register slotnum=1
libxl: debug: libxl_event.c:512:libxl__ev_xswatch_register: watch w=0x806b35c 
wpath=/local/domain/0/backend/console/69/3/state token=0/3: register slotnum=0
libxl: debug: libxl_event.c:512:libxl__ev_xswatch_register: watch w=0x806b3e4 
wpath=/local/domain/0/backend/vif/69/0/state token=19/4: register slotnum=19
libxl: debug: libxl_event.c:512:libxl__ev_xswatch_register: watch w=0x806ba34 
wpath=/local/domain/0/backend/vbd/68/768/state token=18/5: register slotnum=18
libxl: debug: libxl_event.c:512:libxl__ev_xswatch_register: watch w=0x806bbcc 
wpath=/local/domain/0/backend/vif/68/0/state token=17/6: register slotnum=17
libxl: debug: libxl.c:1271:libxl_domain_destroy: ao 0x8069688: inprogress: 
poller=0x80696c8, flags=i
libxl: debug: libxl_event.c:457:watchfd_callback: watch w=0x806b02c 
wpath=/local/domain/0/backend/vbd/69/768/state token=3/0: event 
epath=/local/domain/0/backend/vbd/69/768/state
libxl: debug: libxl_event.c:596:devstate_watch_callback: backend 
/local/domain/0/backend/vbd/69/768/state wanted state 6 ok
libxl: debug: libxl_event.c:549:libxl__ev_xswatch_deregister: watch w=0x806b02c 
wpath=/local/domain/0/backend/vbd/69/768/state token=3/0: deregister slotnum=3
libxl: debug: libxl_event.c:561:libxl__ev_xswatch_deregister: watch 
w=0x806b02c: deregister unregistered
libxl: debug: libxl_device.c:901:device_hotplug: calling hotplug script: 
/etc/xen/scripts/block remove
libxl: debug: libxl_event.c:426:watchfd_callback: watch 
epath=/local/domain/0/backend/vbd/69/768/state token=3/0: empty slot
libxl: debug: libxl_event.c:457:watchfd_callback: watch w=0x806b24c 
wpath=/local/domain/0/backend/console/69/1/state token=2/1: event 
epath=/local/domain/0/backend/console/69/1/state
libxl: debug: libxl_event.c:600:devstate_watch_callback: backend 
/local/domain/0/backend/console/69/1/state wanted state 6 still waiting state 5
libxl: debug: libxl_event.c:457:watchfd_callback: watch w=0x806b2d4 
wpath=/local/domain/0/backend/console/69/2/state token=1/2: event 
epath=/local/domain/0/backend/console/69/2/state
libxl: debug: libxl_event.c:600:devstate_watch_callback: backend 
/local/domain/0/backend/console/69/2/state wanted state 6 still waiting state 5
libxl: debug: libxl_event.c:457:watchfd_callback: watch w=0x806b35c 
wpath=/local/domain/0/backend/console/69/3/state token=0/3: event 
epath=/local/domain/0/backend/console/69/3/state
libxl: debug: libxl_event.c:600:devstate_watch_callback: backend 
/local/domain/0/backend/console/69/3/state wanted state 6 still waiting state 5
libxl: debug: libxl_event.c:457:watchfd_callback: watch w=0x806b3e4 
wpath=/local/domain/0/backend/vif/69/0/state token=19/4: event 
epath=/local/domain/0/backend/vif/69/0/state
libxl: debug: libxl_event.c:600:devstate_watch_callback: backend 
/local/domain/0/backend/vif/69/0/state wanted state 6 still waiting state 5
libxl: debug: libxl_event.c:457:watchfd_callback: watch w=0x806ba34 
wpath=/local/domain/0/backend/vbd/68/768/state token=18/5: event 
epath=/local/domain/0/backend/vbd/68/768/state
libxl: debug: libxl_event.c:600:devstate_watch_callback: backend 
/local/domain/0/backend/vbd/68/768/state wanted state 6 still waiting state 5
libxl: debug: libxl_event.c:457:watchfd_callback: watch w=0x806bbcc 
wpath=/local/domain/0/backend/vif/68/0/state token=17/6: event 
epath=/local/domain/0/backend/vif/68/0/state
libxl: debug: libxl_event.c:600:devstate_watch_callback: backend 
/local/domain/0/backend/vif/68/0/state wanted state 6 still waiting state 5
libxl: debug: libxl_event.c:457:watchfd_callback: watch w=0x806b3e4 
wpath=/local/domain/0/backend/vif/69/0/state token=19/4: event 
epath=/local/domain/0/backend/vif/69/0/state
libxl: debug: libxl_event.c:596:devstate_watch_callback: backend 
/local/domain/0/backend/vif/69/0/state wanted state 6 ok
libxl: debug: libxl_event.c:549:libxl__ev_xswatch_deregister: watch w=0x806b3e4 
wpath=/local/domain/0/backend/vif/69/0/state token=19/4: deregister slotnum=19
libxl: debug: libxl_event.c:561:libxl__ev_xswatch_deregister: watch 
w=0x806b3e4: deregister unregistered
libxl: debug: libxl_device.c:901:device_hotplug: calling hotplug script: 
/etc/xen/scripts/vif-bridge offline
libxl: debug: libxl_event.c:457:watchfd_callback: watch w=0x806ba34 
wpath=/local/domain/0/backend/vbd/68/768/state token=18/5: event 
epath=/local/domain/0/backend/vbd/68/768/state
libxl: debug: libxl_event.c:596:devstate_watch_callback: backend 
/local/domain/0/backend/vbd/68/768/state wanted state 6 ok
libxl: debug: libxl_event.c:549:libxl__ev_xswatch_deregister: watch w=0x806ba34 
wpath=/local/domain/0/backend/vbd/68/768/state token=18/5: deregister slotnum=18
libxl: debug: libxl_event.c:561:libxl__ev_xswatch_deregister: watch 
w=0x806ba34: deregister unregistered
libxl: debug: libxl_device.c:901:device_hotplug: calling hotplug script: 
/etc/xen/scripts/block remove
libxl: debug: libxl_event.c:457:watchfd_callback: watch w=0x806bbcc 
wpath=/local/domain/0/backend/vif/68/0/state token=17/6: event 
epath=/local/domain/0/backend/vif/68/0/state
libxl: debug: libxl_event.c:596:devstate_watch_callback: backend 
/local/domain/0/backend/vif/68/0/state wanted state 6 ok
libxl: debug: libxl_event.c:549:libxl__ev_xswatch_deregister: watch w=0x806bbcc 
wpath=/local/domain/0/backend/vif/68/0/state token=17/6: deregister slotnum=17
libxl: debug: libxl_event.c:561:libxl__ev_xswatch_deregister: watch 
w=0x806bbcc: deregister unregistered
libxl: debug: libxl_device.c:901:device_hotplug: calling hotplug script: 
/etc/xen/scripts/vif-bridge offline
libxl: debug: libxl_xshelp.c:222:libxl__xs_path_cleanup: unable to remove path 
/local/domain/69/device/vif/0: No such file or directory
libxl: debug: libxl_xshelp.c:222:libxl__xs_path_cleanup: unable to remove path 
/local/domain/68/device/vif/0: No such file or directory
libxl: debug: libxl_event.c:614:devstate_timeout: backend 
/local/domain/0/backend/console/69/1/state wanted state 6  timed out
libxl: debug: libxl_event.c:549:libxl__ev_xswatch_deregister: watch w=0x806b24c 
wpath=/local/domain/0/backend/console/69/1/state token=2/1: deregister slotnum=2
libxl: debug: libxl_event.c:561:libxl__ev_xswatch_deregister: watch 
w=0x806b24c: deregister unregistered
libxl: error: libxl_device.c:843:device_backend_callback: unable to disconnect 
device with path /local/domain/0/backend/console/69/1
libxl: debug: libxl_xshelp.c:222:libxl__xs_path_cleanup: unable to remove path 
/local/domain/69/device/console/1: No such file or directory
libxl: debug: libxl_event.c:614:devstate_timeout: backend 
/local/domain/0/backend/console/69/2/state wanted state 6  timed out
libxl: debug: libxl_event.c:549:libxl__ev_xswatch_deregister: watch w=0x806b2d4 
wpath=/local/domain/0/backend/console/69/2/state token=1/2: deregister slotnum=1
libxl: debug: libxl_event.c:561:libxl__ev_xswatch_deregister: watch 
w=0x806b2d4: deregister unregistered
libxl: error: libxl_device.c:843:device_backend_callback: unable to disconnect 
device with path /local/domain/0/backend/console/69/2
libxl: debug: libxl_xshelp.c:222:libxl__xs_path_cleanup: unable to remove path 
/local/domain/69/device/console/2: No such file or directory
libxl: debug: libxl_event.c:614:devstate_timeout: backend 
/local/domain/0/backend/console/69/3/state wanted state 6  timed out
libxl: debug: libxl_event.c:549:libxl__ev_xswatch_deregister: watch w=0x806b35c 
wpath=/local/domain/0/backend/console/69/3/state token=0/3: deregister slotnum=0
libxl: debug: libxl_event.c:561:libxl__ev_xswatch_deregister: watch 
w=0x806b35c: deregister unregistered
libxl: error: libxl_device.c:843:device_backend_callback: unable to disconnect 
device with path /local/domain/0/backend/console/69/3
libxl: debug: libxl_xshelp.c:222:libxl__xs_path_cleanup: unable to remove path 
/local/domain/69/device/console/3: No such file or directory
libxl: error: libxl.c:1462:devices_destroy_cb: libxl__devices_destroy failed 
for 69
libxl: debug: libxl_event.c:1434:libxl__ao_complete: ao 0x8069688: complete, 
rc=0
libxl: debug: libxl_event.c:1406:libxl__ao__destroy: ao 0x8069688: destroy
xc: debug: hypercall buffer: total allocations:67 total releases:67
xc: debug: hypercall buffer: current allocations:0 maximum allocations:2
xc: debug: hypercall buffer: cache current size:2
xc: debug: hypercall buffer: cache hits:64 misses:2 toobig:1



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