* rhel6 guest fail to do save?
@ 2011-01-12 2:15 Zhang, Yang Z
2011-01-12 7:37 ` Pasi Kärkkäinen
0 siblings, 1 reply; 10+ messages in thread
From: Zhang, Yang Z @ 2011-01-12 2:15 UTC (permalink / raw)
To: xen-devel@lists.xensource.com
Anyone had tried the save/restore against rhel6 guest? I found it always throw timeout when I tried to save the guest. And only fail with rhel6 guest.(ubuntu, fedora are ok).
best regards
yang
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: rhel6 guest fail to do save?
2011-01-12 2:15 rhel6 guest fail to do save? Zhang, Yang Z
@ 2011-01-12 7:37 ` Pasi Kärkkäinen
2011-01-12 7:38 ` Zhang, Yang Z
0 siblings, 1 reply; 10+ messages in thread
From: Pasi Kärkkäinen @ 2011-01-12 7:37 UTC (permalink / raw)
To: Zhang, Yang Z; +Cc: xen-devel@lists.xensource.com
On Wed, Jan 12, 2011 at 10:15:59AM +0800, Zhang, Yang Z wrote:
> Anyone had tried the save/restore against rhel6 guest? I found it always throw timeout when I tried to save the guest. And only fail with rhel6 guest.(ubuntu, fedora are ok).
>
I think people have generally been able to save/restore with rhel6,
but there are some issues with live migration between different MHz CPUs,
for example: https://bugzilla.redhat.com/show_bug.cgi?id=663755
Did you search the Redhat bugzilla for save/restore issues?
btw I assume you're talking about rhel6 PV domU..?
-- Pasi
^ permalink raw reply [flat|nested] 10+ messages in thread
* RE: rhel6 guest fail to do save?
2011-01-12 7:37 ` Pasi Kärkkäinen
@ 2011-01-12 7:38 ` Zhang, Yang Z
2011-01-12 17:16 ` Ian Jackson
0 siblings, 1 reply; 10+ messages in thread
From: Zhang, Yang Z @ 2011-01-12 7:38 UTC (permalink / raw)
To: Pasi Kärkkäinen; +Cc: xen-devel@lists.xensource.com
> -----Original Message-----
> From: Pasi Kärkkäinen [mailto:pasik@iki.fi]
> Sent: Wednesday, January 12, 2011 3:37 PM
> To: Zhang, Yang Z
> Cc: xen-devel@lists.xensource.com
> Subject: Re: [Xen-devel] rhel6 guest fail to do save?
>
> On Wed, Jan 12, 2011 at 10:15:59AM +0800, Zhang, Yang Z wrote:
> > Anyone had tried the save/restore against rhel6 guest? I found it always
> throw timeout when I tried to save the guest. And only fail with rhel6
> guest.(ubuntu, fedora are ok).
> >
>
> I think people have generally been able to save/restore with rhel6,
> but there are some issues with live migration between different MHz CPUs,
> for example: https://bugzilla.redhat.com/show_bug.cgi?id=663755
>
> Did you search the Redhat bugzilla for save/restore issues?
>
> btw I assume you're talking about rhel6 PV domU..?
Sorry, I mean the HVM.
best regards
yang
> -- Pasi
^ permalink raw reply [flat|nested] 10+ messages in thread
* RE: rhel6 guest fail to do save?
2011-01-12 7:38 ` Zhang, Yang Z
@ 2011-01-12 17:16 ` Ian Jackson
2011-01-12 19:37 ` Pasi Kärkkäinen
2011-01-13 7:36 ` Ian Campbell
0 siblings, 2 replies; 10+ messages in thread
From: Ian Jackson @ 2011-01-12 17:16 UTC (permalink / raw)
To: Zhang, Yang Z; +Cc: xen-devel@lists.xensource.com
Zhang, Yang Z writes ("RE: [Xen-devel] rhel6 guest fail to do save?"):
> From: Pasi Kärkkäinen [mailto:pasik@iki.fi]
> > I think people have generally been able to save/restore with rhel6,
> > but there are some issues with live migration between different MHz CPUs,
> > for example: https://bugzilla.redhat.com/show_bug.cgi?id=663755
...
> Sorry, I mean the HVM.
This is known not to work. It fails in my automatic tests.
The current RHEL6 kernel has enough pv-on-hvm drivers to get the
toolstack to try to negotiate with the guest during save, but not
enough (or not working enough) drivers to actually complete the
negotiation. So the toolstack times out and the migrate/save fails.
Ian.
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: rhel6 guest fail to do save?
2011-01-12 17:16 ` Ian Jackson
@ 2011-01-12 19:37 ` Pasi Kärkkäinen
2011-01-13 2:03 ` Zhang, Yang Z
2011-01-13 7:36 ` Ian Campbell
1 sibling, 1 reply; 10+ messages in thread
From: Pasi Kärkkäinen @ 2011-01-12 19:37 UTC (permalink / raw)
To: Ian Jackson; +Cc: Zhang, Yang Z, xen-devel@lists.xensource.com
On Wed, Jan 12, 2011 at 05:16:12PM +0000, Ian Jackson wrote:
> Zhang, Yang Z writes ("RE: [Xen-devel] rhel6 guest fail to do save?"):
> > From: Pasi Kärkkäinen [mailto:pasik@iki.fi]
> > > I think people have generally been able to save/restore with rhel6,
> > > but there are some issues with live migration between different MHz CPUs,
> > > for example: https://bugzilla.redhat.com/show_bug.cgi?id=663755
> ...
> > Sorry, I mean the HVM.
>
> This is known not to work. It fails in my automatic tests.
>
> The current RHEL6 kernel has enough pv-on-hvm drivers to get the
> toolstack to try to negotiate with the guest during save, but not
> enough (or not working enough) drivers to actually complete the
> negotiation. So the toolstack times out and the migrate/save fails.
>
Ok.
Zhang: Would you like to open an entry to Redhat bugzilla
about the RHEL6 PVHVM save/restore problem?
-- Pasi
^ permalink raw reply [flat|nested] 10+ messages in thread
* RE: rhel6 guest fail to do save?
2011-01-12 19:37 ` Pasi Kärkkäinen
@ 2011-01-13 2:03 ` Zhang, Yang Z
0 siblings, 0 replies; 10+ messages in thread
From: Zhang, Yang Z @ 2011-01-13 2:03 UTC (permalink / raw)
To: Pasi Kärkkäinen, Ian Jackson; +Cc: xen-devel@lists.xensource.com
> -----Original Message-----
> From: Pasi Kärkkäinen [mailto:pasik@iki.fi]
> Sent: Thursday, January 13, 2011 3:38 AM
> To: Ian Jackson
> Cc: Zhang, Yang Z; xen-devel@lists.xensource.com
> Subject: Re: [Xen-devel] rhel6 guest fail to do save?
>
> On Wed, Jan 12, 2011 at 05:16:12PM +0000, Ian Jackson wrote:
> > Zhang, Yang Z writes ("RE: [Xen-devel] rhel6 guest fail to do save?"):
> > > From: Pasi Kärkkäinen [mailto:pasik@iki.fi]
> > > > I think people have generally been able to save/restore with rhel6,
> > > > but there are some issues with live migration between different MHz
> CPUs,
> > > > for example: https://bugzilla.redhat.com/show_bug.cgi?id=663755
> > ...
> > > Sorry, I mean the HVM.
> >
> > This is known not to work. It fails in my automatic tests.
> >
> > The current RHEL6 kernel has enough pv-on-hvm drivers to get the
> > toolstack to try to negotiate with the guest during save, but not
> > enough (or not working enough) drivers to actually complete the
> > negotiation. So the toolstack times out and the migrate/save fails.
> >
>
> Ok.
>
> Zhang: Would you like to open an entry to Redhat bugzilla
> about the RHEL6 PVHVM save/restore problem?
sure
here is the link:
https://bugzilla.redhat.com/show_bug.cgi?id=669252
best regards
yang
> -- Pasi
^ permalink raw reply [flat|nested] 10+ messages in thread
* RE: rhel6 guest fail to do save?
2011-01-12 17:16 ` Ian Jackson
2011-01-12 19:37 ` Pasi Kärkkäinen
@ 2011-01-13 7:36 ` Ian Campbell
2011-01-13 7:47 ` Pasi Kärkkäinen
1 sibling, 1 reply; 10+ messages in thread
From: Ian Campbell @ 2011-01-13 7:36 UTC (permalink / raw)
To: Ian Jackson; +Cc: Zhang, Yang Z, xen-devel@lists.xensource.com
On Wed, 2011-01-12 at 17:16 +0000, Ian Jackson wrote:
> Zhang, Yang Z writes ("RE: [Xen-devel] rhel6 guest fail to do save?"):
> > From: Pasi Kärkkäinen [mailto:pasik@iki.fi]
> > > I think people have generally been able to save/restore with rhel6,
> > > but there are some issues with live migration between different MHz CPUs,
> > > for example: https://bugzilla.redhat.com/show_bug.cgi?id=663755
> ...
> > Sorry, I mean the HVM.
>
> This is known not to work. It fails in my automatic tests.
>
> The current RHEL6 kernel has enough pv-on-hvm drivers to get the
> toolstack to try to negotiate with the guest during save, but not
> enough (or not working enough) drivers to actually complete the
> negotiation. So the toolstack times out and the migrate/save fails.
Does any of the pv-on-hvm functionality work at all in RHEL6?
Perhaps setting "platform_pci = 0" in the guest configuration would work
around this issue? In particular if RHEL6 has no useful pv-on-hvm
functionality in the first place then nothing is lost.
Ian.
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: rhel6 guest fail to do save?
2011-01-13 7:36 ` Ian Campbell
@ 2011-01-13 7:47 ` Pasi Kärkkäinen
2011-01-13 21:22 ` Don Dutile
0 siblings, 1 reply; 10+ messages in thread
From: Pasi Kärkkäinen @ 2011-01-13 7:47 UTC (permalink / raw)
To: Ian Campbell; +Cc: Zhang, Yang Z, xen-devel@lists.xensource.com, Ian Jackson
On Thu, Jan 13, 2011 at 07:36:02AM +0000, Ian Campbell wrote:
> On Wed, 2011-01-12 at 17:16 +0000, Ian Jackson wrote:
> > Zhang, Yang Z writes ("RE: [Xen-devel] rhel6 guest fail to do save?"):
> > > From: Pasi Kärkkäinen [mailto:pasik@iki.fi]
> > > > I think people have generally been able to save/restore with rhel6,
> > > > but there are some issues with live migration between different MHz CPUs,
> > > > for example: https://bugzilla.redhat.com/show_bug.cgi?id=663755
> > ...
> > > Sorry, I mean the HVM.
> >
> > This is known not to work. It fails in my automatic tests.
> >
> > The current RHEL6 kernel has enough pv-on-hvm drivers to get the
> > toolstack to try to negotiate with the guest during save, but not
> > enough (or not working enough) drivers to actually complete the
> > negotiation. So the toolstack times out and the migrate/save fails.
>
> Does any of the pv-on-hvm functionality work at all in RHEL6?
>
> Perhaps setting "platform_pci = 0" in the guest configuration would work
> around this issue? In particular if RHEL6 has no useful pv-on-hvm
> functionality in the first place then nothing is lost.
>
RHEL6 is supposed to have working PV-on-HVM drivers,
based on Stefano's patches.
Redhat has tested them with RHEL5 dom0, afaik.
-- Pasi
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: rhel6 guest fail to do save?
2011-01-13 7:47 ` Pasi Kärkkäinen
@ 2011-01-13 21:22 ` Don Dutile
2011-01-13 21:45 ` Pasi Kärkkäinen
0 siblings, 1 reply; 10+ messages in thread
From: Don Dutile @ 2011-01-13 21:22 UTC (permalink / raw)
To: Pasi Kärkkäinen
Cc: Zhang, Yang Z, xen-devel@lists.xensource.com, Ian Jackson,
Ian Campbell
Pasi Kärkkäinen wrote:
> On Thu, Jan 13, 2011 at 07:36:02AM +0000, Ian Campbell wrote:
>> On Wed, 2011-01-12 at 17:16 +0000, Ian Jackson wrote:
>>> Zhang, Yang Z writes ("RE: [Xen-devel] rhel6 guest fail to do save?"):
>>>> From: Pasi Kärkkäinen [mailto:pasik@iki.fi]
>>>>> I think people have generally been able to save/restore with rhel6,
>>>>> but there are some issues with live migration between different MHz CPUs,
>>>>> for example: https://bugzilla.redhat.com/show_bug.cgi?id=663755
>>> ...
>>>> Sorry, I mean the HVM.
>>> This is known not to work. It fails in my automatic tests.
>>>
>>> The current RHEL6 kernel has enough pv-on-hvm drivers to get the
>>> toolstack to try to negotiate with the guest during save, but not
>>> enough (or not working enough) drivers to actually complete the
>>> negotiation. So the toolstack times out and the migrate/save fails.
>> Does any of the pv-on-hvm functionality work at all in RHEL6?
>>
>> Perhaps setting "platform_pci = 0" in the guest configuration would work
>> around this issue? In particular if RHEL6 has no useful pv-on-hvm
>> functionality in the first place then nothing is lost.
>>
>
> RHEL6 is supposed to have working PV-on-HVM drivers,
> based on Stefano's patches.
>
> Redhat has tested them with RHEL5 dom0, afaik.
>
Correct. xen-emul-unplug doesn't work, though, due to late
patch that broke that bit of it.
A fair number of upstream patches for pv-hvm & save/restore
have been backported to the next rhel6 update, so hoping this
state of missing pieces in rhel6 pv-on-hvm will be short-lived.
oh, added benefit: the patches should improve rhel6 (pv-on)hvm
on non-RHEL5 dom0's as well.
> -- Pasi
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: rhel6 guest fail to do save?
2011-01-13 21:22 ` Don Dutile
@ 2011-01-13 21:45 ` Pasi Kärkkäinen
0 siblings, 0 replies; 10+ messages in thread
From: Pasi Kärkkäinen @ 2011-01-13 21:45 UTC (permalink / raw)
To: Don Dutile
Cc: Zhang, Yang Z, xen-devel@lists.xensource.com, Ian Jackson,
Ian Campbell
On Thu, Jan 13, 2011 at 04:22:36PM -0500, Don Dutile wrote:
> Pasi Kärkkäinen wrote:
> > On Thu, Jan 13, 2011 at 07:36:02AM +0000, Ian Campbell wrote:
> >> On Wed, 2011-01-12 at 17:16 +0000, Ian Jackson wrote:
> >>> Zhang, Yang Z writes ("RE: [Xen-devel] rhel6 guest fail to do save?"):
> >>>> From: Pasi Kärkkäinen [mailto:pasik@iki.fi]
> >>>>> I think people have generally been able to save/restore with rhel6,
> >>>>> but there are some issues with live migration between different MHz CPUs,
> >>>>> for example: https://bugzilla.redhat.com/show_bug.cgi?id=663755
> >>> ...
> >>>> Sorry, I mean the HVM.
> >>> This is known not to work. It fails in my automatic tests.
> >>>
> >>> The current RHEL6 kernel has enough pv-on-hvm drivers to get the
> >>> toolstack to try to negotiate with the guest during save, but not
> >>> enough (or not working enough) drivers to actually complete the
> >>> negotiation. So the toolstack times out and the migrate/save fails.
> >> Does any of the pv-on-hvm functionality work at all in RHEL6?
> >>
> >> Perhaps setting "platform_pci = 0" in the guest configuration would work
> >> around this issue? In particular if RHEL6 has no useful pv-on-hvm
> >> functionality in the first place then nothing is lost.
> >>
> >
> > RHEL6 is supposed to have working PV-on-HVM drivers,
> > based on Stefano's patches.
> >
> > Redhat has tested them with RHEL5 dom0, afaik.
> >
> Correct. xen-emul-unplug doesn't work, though, due to late
> patch that broke that bit of it.
> A fair number of upstream patches for pv-hvm & save/restore
> have been backported to the next rhel6 update, so hoping this
> state of missing pieces in rhel6 pv-on-hvm will be short-lived.
> oh, added benefit: the patches should improve rhel6 (pv-on)hvm
> on non-RHEL5 dom0's as well.
>
Great! Thanks for the reply!
-- Pasi
^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2011-01-13 21:45 UTC | newest]
Thread overview: 10+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2011-01-12 2:15 rhel6 guest fail to do save? Zhang, Yang Z
2011-01-12 7:37 ` Pasi Kärkkäinen
2011-01-12 7:38 ` Zhang, Yang Z
2011-01-12 17:16 ` Ian Jackson
2011-01-12 19:37 ` Pasi Kärkkäinen
2011-01-13 2:03 ` Zhang, Yang Z
2011-01-13 7:36 ` Ian Campbell
2011-01-13 7:47 ` Pasi Kärkkäinen
2011-01-13 21:22 ` Don Dutile
2011-01-13 21:45 ` Pasi Kärkkäinen
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