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    |   xen-devel
Re: [Xen-devel] Windows Bug Check 0x101 issue 
| To: | Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx> |  
| Subject: | Re: [Xen-devel] Windows Bug Check 0x101 issue |  
| From: | Alan Cox <alan@xxxxxxxxxxxxxxxxxxx> |  
| Date: | Thu, 27 Mar 2008 16:30:46 +0000 |  
| Cc: | xen-devel@xxxxxxxxxxxxxxxxxxx, Keir Fraser <keir.fraser@xxxxxxxxxxxxx>,	Kouya Shimura <kouya@xxxxxxxxxxxxxx>,	Samuel Thibault <samuel.thibault@xxxxxxxxxxxxx> |  
| Delivery-date: | Thu, 27 Mar 2008 09:48:00 -0700 |  
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| > having decided to violate it, perhaps the right answer is to make the
> disk simply vanish: ignore all future command writes, zero all of the
> registers that the host is attempting to read, not issue an interrupt,
> and somehow discard the responses from any overlapped IO which is in
> flight.
I think it is safest - and if the underlying storage fails something bad
has happened and anything else we do would make it worse
> 
> Is that what you meant by `offline the virtual device' ?
Just leave the busy bit set forever, the host will get fed up of waiting,
reset, rinse repeat a few times and (except for older Linux) then offline
the device. Older Linux (ie drivers/ide) has problems coping with failed
drives so will carry on spewing but limp along ok.
Alan
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