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 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
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 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
> -----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_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
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.
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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 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
> -----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_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
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. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
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 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
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_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
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 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel