[libvirt] can't start domain with a corrupted disk attatched

[shu ming]

On 2011-11-3 18:12, Daniel P. Berrange wrote:
> On Thu, Nov 03, 2011 at 05:33:56PM +0800, lvroyce wrote:
>> Hi all,
>>
>>     I came across below issue when testing:
>>
>>     1.make a volume and attach it to  a domain A
>>     2.unplug the vg from the host in order to emulating a volume failure
>>     3.start domain A(failed)
>>
>>      In step 3 can't start domainA . because can't find disk listed
>> in xml when create the Domain.
>>
>>      I'm not sure if it is reasonable. In common sense, we can still
>> start our system even if we have a corrupt data disk .And also ,if
>> in data center we carelessly attatch a corrupt volumn to all the
>> guest, it will result in all guests fail to boot .
>>
>>      I suggest to  automatically detach a disk if it can't be found
>> and just give out a warning.Please let me know your opinion about if
>> it is a bug or a feature.Thanks.
> You are not simulating a corrupt data disk in your example, you are
> simulating a completely missing disk. This is simply administrative
> error and thus is it perfectly reasonable for the guest to not
> start when its disk is missing.
I think the she was talking about a non-root disk missing.  In physical 
machine, if a non-root disk was gone, the system can also start up 
without the disk.


>
>
> Daniel