Re: [Xen-API] Bug#674161: xcp-xapi: 'the device disappeared from xenstore' message during vbd-plug (vm-start)

[George Shuklin <george.shuklin@xxxxxxxxx>]

Some more data:

Done clean reinstall (now with i386 in dom0), got exactly same error.

After some digging around got this (new uuids, same problem):

Key logs entries:
[20120523T17:50:08.602Z|debug|lab-xh3|249 UNIX 
/var/lib/xcp/xapi|VM.start R:1c6c2941c565|xenops] Device.Vbd.add 
(device_number=Xen(0, 0) | 
params=/dev/sm/backend/357e7a73-ec60-6ae6-fe0d-56ca87d228b2/741cb833-b2c3-4bf7-b724-1295e984f097 
| phystype=vhd)
[20120523T17:50:08.602Z|debug|lab-xh3|249 UNIX 
/var/lib/xcp/xapi|VM.start R:1c6c2941c565|xenops] adding device 
B0[/local/domain/0/backend/vbd/4/51712] 
F4[/local/domain/4/device/vbd/51712] H[/xapi/4/hotplug/vbd/51712]
[20120523T17:50:08.603Z|debug|lab-xh3|249 UNIX 
/var/lib/xcp/xapi|VM.start R:1c6c2941c565|backtrace] Raised at 
device.ml:65.10-42 -> xst.ml:52.18-23 -> xst.ml:55.9-12 -> 
device.ml:497.1-60 -> vbdops.ml:102.37-229 -> 
storage_access.ml:516.14-317 -> xapi_xenops_errors.ml:79.4-8
[20120523T17:50:08.603Z|debug|lab-xh3|249 UNIX 
/var/lib/xcp/xapi|VM.start R:1c6c2941c565|xapi] Converting xenops 
exception (INTERNAL_ERROR: [ Device_common.Device_backend_vanished(_) ]) 
into nice API internal error

I've checked - when I plug vbd to dom0 it works fine, but I can't do it 
with other domains.
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