Strangely according to the xen.spec that gets installed using the xen
SRPM from the sources ISO, it looks like it was setup with a
max_phys_cpus setting of 256.
Of course it also refers to an empty patch, so who really knows.
-Dustin
On Thu, Apr 14, 2011 at 12:55 PM, Outback Dingo <outbackdingo@xxxxxxxxx> wrote:
> I built and installed XEN 4.1 on the XCP platform, and rebooted, it loaded
> but none of the SRs appeared available
> so VMs wouldnt start, i then rebooted back into "stock" with the 3.4.2, and
> the xapi wouldnt even run, so it appears
> I tired to rebuild the API to no avail hoping maybe then the SR issues would
> be forgiven
> at this point im at XCP 1.0 with the 4.1 in a booted but unusable state
> also kinda curious what the next "devel" drop will be ready and if itll be
> at 4.1 by then, ive got a few CPU heavy boxes
> which are really not useable to capacity at the moment, so crossing fingers
> for someone with knowledge to pitch in with
> pointers
>
> On Thu, Apr 14, 2011 at 3:48 PM, Dustin Marquess <dmarquess@xxxxxxxxx>
> wrote:
>>
>> I'm having the same issue myself. However I'm trying to stay as close
>> to 'stock' XCP 1.0 as possible, since I need stability.
>>
>> I have the 2 source ISOs & even the xen-api.hg Mercurial repo cloned.
>> However, I'm not sure which piece of XCP I need to recompile. Is it
>> just the hypervisor kernel itself (eg, /boot/xen-3.4.2.gz), or the
>> dom0 kernel, or the entire xapi?
>>
>> The build instructions @
>> http://wiki.xen.org/xenwiki/XCP_Building_Instructions just show how to
>> rebuild xapi itself, not the entire XCP platform, sadly.
>>
>> -Dustin
>>
>> On Tue, Mar 8, 2011 at 11:51 AM, Todd Deshane <todd.deshane@xxxxxxx>
>> wrote:
>> > On Tue, Mar 8, 2011 at 2:46 PM, AP Xen <apxeng@xxxxxxxxx> wrote:
>> >> Technically, it is possible as XCP is open source. You would have to
>> >> download the source ISO and rebuild Xen with nr_phys_cpus=128. Trying
>> >> to
>> >> replace Xen in XCP with the Xen 4.x might be more difficult.
>> >>
>> >
>> > True it is open source and should be possible. You're going to want to
>> > make sure you use at least the 4.1 branch as it has better libxl
>> > integration.
>> >
>> > Do report any problems that you find to xen-devel. I think the
>> > intention is that this should work, I'm just not sure how much
>> > community testing we have gotten to this point. Do let us know if/when
>> > you test it and how you progress.
>> >
>> > Thanks,
>> > Todd
>> >
>> >
>> >>
>> >>
>> >> From: Outback Dingo [mailto:outbackdingo@xxxxxxxxx]
>> >> Sent: Tuesday, March 08, 2011 11:08 AM
>> >> To: Todd Deshane
>> >> Cc: AP Xen; Tapas Mishra; xen-users; Boris Quiroz
>> >>
>> >> Subject: Re: [Xen-users] XCP - Maximum CPU cores
>> >>
>> >>
>> >>
>> >> well, i need 128 cores now on XCP :( so im hardware heavy and cant
>> >> utilize
>> >> 3/4 my cores on 2 systems, so how can one compensates for this
>> >>
>> >> is it possible to use xen 4.x on XCP 1.0 ?
>> >>
>> >> On Tue, Mar 8, 2011 at 1:42 PM, Todd Deshane <todd.deshane@xxxxxxx>
>> >> wrote:
>> >>
>> >> On Tue, Mar 8, 2011 at 6:32 PM, AP Xen <apxeng@xxxxxxxxx> wrote:
>> >>> It is called max_phys_cpus=<nr>
>> >>>
>> >>> http://xenbits.xensource.com/xen-unstable.hg/rev/d7cbcf5d7cd6
>> >>>
>> >>>
>> >>>
>> >>> BTW, the default is 128 for Xen 4.x
>> >>>
>> >>
>> >> Just FYI, the plan will be to move to Xen 4.1+ starting with XCP 1.1
>> >>
>> >> We do also plan to track xen-unstable with an XCP unstable version as
>> >> well. More to come on this.
>> >>
>> >> Thanks,
>> >> Todd
>> >>
>> >>>
>> >>>
>> >>> Thanks,
>> >>>
>> >>> AP
>> >>>
>> >>>
>> >>>
>> >>> From: Tapas Mishra [mailto:mightydreams@xxxxxxxxx]
>> >>> Sent: Tuesday, March 08, 2011 10:03 AM
>> >>> To: xen-users
>> >>> Cc: AP Xen; Boris Quiroz; Outback Dingo
>> >>>
>> >>> Subject: Re: [Xen-users] XCP - Maximum CPU cores
>> >>>
>> >>>
>> >>>
>> >>> Hi please elaborate as how the compilation method of hypervisor can
>> >>> enhance
>> >>> the number of CPU's to be pinned.
>> >>>
>> >>>
>> >>>
>> >>> On Tue, Mar 8, 2011 at 11:24 PM, AP Xen <apxeng@xxxxxxxxx> wrote:
>> >>>
>> >>> The default is 32, however you can up the limit to 64 with a compile
>> >>> time
>> >>> option. So, It depends on how the hypervisor was compiled.
>> >>>
>> >>> Thanks,
>> >>> AP
>> >>>
>> >>>> -----Original Message-----
>> >>>> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-users-
>> >>>> bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Boris Quiroz
>> >>>> Sent: Tuesday, March 08, 2011 6:04 AM
>> >>>> To: Outback Dingo
>> >>>> Cc: xen-users
>> >>>> Subject: Re: [Xen-users] XCP - Maximum CPU cores
>> >>>>
>> >>>> 2011/3/8 Outback Dingo <outbackdingo@xxxxxxxxx>:
>> >>>> > Whats the maximum cpu cores XCP will see ?
>> >>>> > _______________________________________________
>> >>>> > Xen-users mailing list
>> >>>> > Xen-users@xxxxxxxxxxxxxxxxxxx
>> >>>> > http://lists.xensource.com/xen-users
>> >>>> >
>> >>>>
>> >>>> Somewhere I read they were 32 cores maximum. I'm checking..
>> >>>>
>> >>>> Cheers.
>> >>>>
>> >>>> --
>> >>>> @cereal_bars
>> >>>>
>> >>>> _______________________________________________
>> >>>> Xen-users mailing list
>> >>>> Xen-users@xxxxxxxxxxxxxxxxxxx
>> >>>> http://lists.xensource.com/xen-users
>> >>>
>> >>>
>> >>> _______________________________________________
>> >>> Xen-users mailing list
>> >>> Xen-users@xxxxxxxxxxxxxxxxxxx
>> >>> http://lists.xensource.com/xen-users
>> >>>
>> >>>
>> >>> --
>> >>> http://mightydreams.blogspot.com
>> >>>
>> >>> _______________________________________________
>> >>> Xen-users mailing list
>> >>> Xen-users@xxxxxxxxxxxxxxxxxxx
>> >>> http://lists.xensource.com/xen-users
>> >>>
>> >>
>> >>
>> >> --
>> >> Todd Deshane
>> >> http://www.linkedin.com/in/deshantm
>> >> http://www.xen.org/products/cloudxen.html
>> >>
>> >>
>> >
>> >
>> >
>> > --
>> > Todd Deshane
>> > http://www.linkedin.com/in/deshantm
>> > http://www.xen.org/products/cloudxen.html
>> >
>> > _______________________________________________
>> > Xen-users mailing list
>> > Xen-users@xxxxxxxxxxxxxxxxxxx
>> > http://lists.xensource.com/xen-users
>> >
>>
>> _______________________________________________
>> Xen-users mailing list
>> Xen-users@xxxxxxxxxxxxxxxxxxx
>> http://lists.xensource.com/xen-users
>
>
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