Re: Re: Xen-unstable save error

[Michal Novotny <minovotn@redhat.com>]

On 06/21/2010 04:06 PM, Keir Fraser wrote:
> On 21/06/2010 15:02, "Michal Novotny"<minovotn@redhat.com>  wrote:
>
>    
>> Ok Keir, but what I don't understand is why there's nothing in
>> `/local/domain/%d/device/suspend/event-channel`. So this is OK?
>>      
> Yes that's okay. The guest writes that location only If it supports the new
> event-channel notification method for suspend.
>
>    
>> For the restore functionality:
>>
>> # ls -ahl rhel5-32fv.sav
>> -rwxr-xr-x 1 root root 53M Jun 21  2010 rhel5-32fv.sav
>>      
> Okay, yeah, if the guest really has 1G of memory allocated to it at the time
> of the save, then something has gone wrong on the save side. But no errors
> were apparent on the save side, apart from that event-channel port warning
> which is benign? That's weird.
>
>   -- Keir
>
>
>    
Well, I see what's going on now but I had to turn on the debug flag now. 
According to the code, this is what's being hit per almost each page and 
MFN:

...
                 if ( pfn_type[j] == XEN_DOMCTL_PFINFO_XTAB )
                 {
                     printf("type fail: page %i mfn %08lx\n", j, gmfn);
                     continue;
                 }
...

Xend.log is having many occurences of type failures:

[2010-06-21 16:48:53 10573] DEBUG (XendCheckpoint:381) type fail: page 
414 mfn 0000659e
[2010-06-21 16:48:53 10573] DEBUG (XendCheckpoint:129) In 
saveInputHandler type fail: page 414 mfn 0000659e
[2010-06-21 16:48:53 10573] DEBUG (XendCheckpoint:381) type fail: page 
415 mfn 0000659f
[2010-06-21 16:48:53 10573] DEBUG (XendCheckpoint:129) In 
saveInputHandler type fail: page 415 mfn 0000659f
[2010-06-21 16:48:53 10573] DEBUG (XendCheckpoint:381) type fail: page 
416 mfn 000065a0
[2010-06-21 16:48:53 10573] DEBUG (XendCheckpoint:129) In 
saveInputHandler type fail: page 416 mfn 000065a0

Well, did somebody hit those save issues or similar?

Thanks,
Michal

-- 
Michal Novotny<minovotn@redhat.com>, RHCE
Virtualization Team (xen userspace), Red Hat