I have a fedora 16 with all updates.
when I run xm mem-set 0 1024 the machines crashes after some seconds.
Itamar Reis Peixoto
msn, google talk: itamar(a)ispbrasil.com.br
+55 11 4063 5033 (FIXO SP)
+55 34 9158 9329 (TIM)
+55 34 8806 3989 (OI)
+55 34 3221 8599 (FIXO MG)
I remember you did a lot of the work on making libvirt interface
with Xen, and I was wondering what the status of it is?
I can use the virsh commands:
virt-install -l nfs:master:/data/tftpboot/f16-x86_64 --ram 1024 --disk /var/lib/libvirt/images/test.img --name F16
Retrieving file .treeinfo... | 1.7 kB 00:00 ...
Retrieving file vmlinuz... | 7.9 MB 00:00 ...
Retrieving file initrd.img... | 256 MB 00:12 ...
But I can't do the same using the 'virt-manager'. Is it some different code?
BTW, thanks for making 'libvirt' work with 'xl'!
What do you guys think of:
> Hi folks,
> F16 features should be at 100% by this point. How close are we at this
> point? It's showing at 90% right now but it's hard to gauge what the
> last 10% actually involves. Is it just the blocker bugs listed?
Are we there yet?
The only "blocker" bug I really see is Bugzilla #739134, "GRUB 2 has
extraneous menu entries after installing Xen". Even this is somewhat
On Thu, Sep 15, 2011 at 03:38:09PM -0700, Adam Williamson wrote:
> On Thu, 2011-09-15 at 10:10 -0500, W. Michael Petullo wrote:
> > >> There are known bugs in FC15/FC16 that have been filled some time ago that
> > >> folks will sadly run into: 728775, 658387 and 668063
> > >>
> > >> Fortunatly the bugs have patches attached and the files to be modified are shell scripts.
> > > Yep, links here:
> > >
> > > https://bugzilla.redhat.com/show_bug.cgi?id=728775
> > The Fedora update system reports this is fixed in grub2-1.99-6.fc16.
> > > https://bugzilla.redhat.com/show_bug.cgi?id=658387
> > Peter Jones submitted a new grubby package yesterday. This seems to fix
> > bug #658387 (i.e., new-kernel-pkg creates a Dom0-style grub.cfg entry
> > if /etc/sysconfig/kernel contains "HYPERVISOR=/boot/xen.gz").
> > I have not yet tested this on Fedora 16. However, I did test on Fedora
> > 15. In this case, bug #668063 is still in effect. That is, grubby creates
> > most of a GRUB record, but the "module initramfs-..." entry is missing.
> > Has anyone yet tested this new grubby package on Fedora 16 yet? Does
> > using GRUB 2 makes #668063 irrelevant?
I believe so (the irrelevant part). But the functionality part of grubby picking
up /etc/sysconfig/kernel and making that kernel the default is not in Grub2 - so
not sure how that can be addressed.
> > > https://bugzilla.redhat.com/show_bug.cgi?id=668063
> > I just added some more description to this bug.
> So, there's a meta-point here: we currently 'require' Beta releases to
> boot as guests on Xen hosts:
> "The release must boot successfully as a virtual guest in a situation
> where the virtual host is running a supported Xen implementation"
> I really don't have much knowledge of Xen and haven't followed this
> discussion closely, but do any currently-known bugs prevent this? If so,
> please flag them up so they can be considered as Beta blockers...thanks!
Somehow the xen-kbdfront driver is not included in the initrd image
(I think) - and we end with anaconda but can't type anything. I've been trying
to figure out how to inject said module in the install initrd to see if that is
really the problem but running in roadblocks (like xz 5.1.1alpha or 5.0.3 complains
about corrupt image, or I've no idea how to make driver disks).
Bob Cochran wrote:
> On 9/21/11 9:35 AM, Bill Davidsen wrote:
>> Bob Cochran wrote:
>>> I want to build a new computer system that features dual processors, a
>>> lot of memory, and is able to run Xen virtualization. Install Fedora
>>> Xen as the host on such a machine, and then start running a variety of
>>> other operating systems as virtual machines.
>>> What dual processor hardware configurations work well with Xen? For
>>> example will any Supermicro brand dual processor motherboard be
>>> compatible with Xen? I am thinking of Supermicro boards with Xeon
>>> processors. Or is there a better brand of motherboard?
>> With 2-4-6 core CPUs out there, do you really need that level of cost
>> and complexity? I run an x58 ASUS Sabertooth board with i7-950 CPU
>> and 24GB ram, and it seems up to most of what I even plan to do. With
>> eight threads I can handle lots of VMs, although I am running most
>> with KVM rather than xen. Newer boards will go to six (hyperthreaded)
>> cores, but I believe only support four sticks of mempry.
> I recently started working with a dual processor workstation bought
> from Dell. My role is to support the hardware and get the software
> installed. It is set up with two, Xeon E5645 6-core processors. Based
> on only about 2 hours of working with it -- they seem to make a
> significant speed difference difference. This is with a mere 12 Gb of
> registered DDR3 memory (6 Gb per processor.) Unfortunately we can only
> do 12 Gb for now, we were hitting the budget limit. I have a question
> out to my customer asking about the actual experience with
> applications. My impression is there is a lot more speed.
> I have a second person who really maxes out cpu performance and I
> think that person needs to go beyond the single processor stage. Maybe
> it is time for multiple processors, each with loads of cache and
> cores, and some serious memory.
There's no question that if you are CPU bound and have lots of tasks
more is better. But that's an unusual case, the load type seen in
scientific calculations and rendering images. For more common loads
memory, storage, or network are often the limiting factor. Since the
original question didn't really make it clear what the load would be or
what budget was available I thought it was worth suggesting an option
leaving more budget for things which may be bottlenecks.
General questions often get general answers.
We are not out of the woods yet, but we know the direction and have
taken the first step. The steps are many, but finite in number, and if
we persevere we will reach our destination. -me, 2010
I want to build a new computer system that features dual processors, a
lot of memory, and is able to run Xen virtualization. Install Fedora and
Xen as the host on such a machine, and then start running a variety of
other operating systems as virtual machines.
What dual processor hardware configurations work well with Xen? For
example will any Supermicro brand dual processor motherboard be hardware
compatible with Xen? I am thinking of Supermicro boards with Xeon
processors. Or is there a better brand of motherboard?