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Re: [Xen-devel] Re: Xen-unstable save error



On 06/21/2010 07:57 PM, Keir Fraser wrote:
On 21/06/2010 15:50, "Michal Novotny"<minovotn@xxxxxxxxxx>  wrote:

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:
Hm, well I just saved/restored a 750MB PV guest and a 750MB HVM guest okay
with xen-unstable tip. However I think the above type-checking code may only
have been introduced for HVM guests as of Jan Beulich's recent changeset
21615. If your guest is an HVM guest, perhaps this changeset is to blame? I
would suggest reverting it and re-testing. I've cc'ed Jan in case he can
comment on the info you've given.

Keir,
you were right about the c/s 21615. I did try reverting it and it was working fine to both save and restore when I was having this patch reverted.

Michal

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


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