Re: [Xen-devel] [PATCH v8 00/15] execute hotplug scripts from libxl

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

(resending as I don't think I had SMTP setup properly on my laptop -- sorry if 
you get this twice!)

On Wed, 2012-07-04 at 07:59 -0400, Roger Pau Monne wrote:
> This new serie (v8) fixes a code refactoring problem that was present 
> in v7 (06/15 changed code introduced by 05/15).

>From somewhere in here I'm seeing timeouts waiting for the b/e to go to
state 5 when doing cd-insert on an HVM guest. I suspect because this is
(or should be) turned into a virtual media change rather than an actual
device remove and insert?

BTW libxl_cdrom_insert hasn't been async'd up yet -- I was actually just
looking into that when I noticed this.

Ian.

        ~# xl -vvv cd-insert dHVM-1 hdc /scratch/mini.iso,raw
        libxl: debug: libxl.c:3074:libxl_device_disk_remove: ao 0x8069c30: 
create: how=(nil) callback=(nil) poller=0x8069a50
        libxl: debug: libxl_event.c:512:libxl__ev_xswatch_register: watch 
w=0x8069dcc wpath=/local/domain/0/backend/qdisk/43/5632/state token=3/0: 
register slotnum=3
        libxl: debug: libxl.c:3074:libxl_device_disk_remove: ao 0x8069c30: 
inprogress: poller=0x8069a50, flags=i
        libxl: debug: libxl_event.c:457:watchfd_callback: watch w=0x8069dcc 
wpath=/local/domain/0/backend/qdisk/43/5632/state token=3/0: event 
epath=/local/domain/0/backend/qdisk/43/5632/state
        libxl: debug: libxl_event.c:600:devstate_watch_callback: backend 
/local/domain/0/backend/qdisk/43/5632/state wanted state 6 still waiting state 5
        
        [... long wait ...]
        
        libxl: debug: libxl_event.c:614:devstate_timeout: backend 
/local/domain/0/backend/qdisk/43/5632/state wanted state 6  timed out
        libxl: debug: libxl_event.c:549:libxl__ev_xswatch_deregister: watch 
w=0x8069dcc wpath=/local/domain/0/backend/qdisk/43/5632/state token=3/0: 
deregister slotnum=3
        libxl: debug: libxl_event.c:561:libxl__ev_xswatch_deregister: watch 
w=0x8069dcc: deregister unregistered
        libxl: debug: libxl_event.c:512:libxl__ev_xswatch_register: watch 
w=0x8069dcc wpath=/local/domain/0/backend/qdisk/43/5632/state token=3/1: 
register slotnum=3
        libxl: debug: libxl_event.c:457:watchfd_callback: watch w=0x8069dcc 
wpath=/local/domain/0/backend/qdisk/43/5632/state token=3/1: event 
epath=/local/domain/0/backend/qdisk/43/5632/state
        libxl: debug: libxl_event.c:600:devstate_watch_callback: backend 
/local/domain/0/backend/qdisk/43/5632/state wanted state 6 still waiting state 5
        
        [... long wait ...]
        
        libxl: debug: libxl_event.c:614:devstate_timeout: backend 
/local/domain/0/backend/qdisk/43/5632/state wanted state 6  timed out
        libxl: debug: libxl_event.c:549:libxl__ev_xswatch_deregister: watch 
w=0x8069dcc wpath=/local/domain/0/backend/qdisk/43/5632/state token=3/1: 
deregister slotnum=3
        libxl: debug: libxl_event.c:561:libxl__ev_xswatch_deregister: watch 
w=0x8069dcc: deregister unregistered
        libxl: debug: libxl_device.c:759:device_backend_callback: unable to 
disconnect device with path /local/domain/0/backend/qdisk/43/5632
        libxl: debug: libxl_event.c:1434:libxl__ao_complete: ao 0x8069c30: 
complete, rc=0
        libxl: debug: libxl_event.c:1406:libxl__ao__destroy: ao 0x8069c30: 
destroy
        libxl: debug: libxl.c:1958:libxl_device_disk_add: ao 0x8069c30: create: 
how=(nil) callback=(nil) poller=0x8069a50
        libxl: debug: libxl_device.c:255:libxl__device_disk_set_backend: Disk 
vdev=hdc spec.backend=unknown
        libxl: debug: libxl_device.c:258:libxl__device_disk_set_backend:      
format=raw cdrom=yes
        libxl: debug: libxl_device.c:209:disk_try_backend: Disk vdev=hdc, 
backend phy unsuitable as phys path not a block device
        libxl: debug: libxl_device.c:216:disk_try_backend: Disk vdev=hdc, 
backend tap unsuitable because blktap not available
        libxl: debug: libxl_device.c:293:libxl__device_disk_set_backend: Disk 
vdev=hdc, using backend qdisk
        libxl: debug: libxl_event.c:1434:libxl__ao_complete: ao 0x8069c30: 
complete, rc=0
        libxl: debug: libxl.c:1971:libxl_device_disk_add: ao 0x8069c30: 
inprogress: poller=0x8069a50, flags=ic
        libxl: debug: libxl_event.c:1406:libxl__ao__destroy: ao 0x8069c30: 
destroy
        xc: debug: hypercall buffer: total allocations:2 total releases:2
        xc: debug: hypercall buffer: current allocations:0 maximum allocations:2
        xc: debug: hypercall buffer: cache current size:1
        xc: debug: hypercall buffer: cache hits:0 misses:1 toobig:1




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