Re: [Xen-devel] Openstack on ARM64

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

CC'ing xen-devel and Anthony

On Tue, 20 Oct 2015, suresh knv wrote:
> Hi Stefano,
> 
> I am starting xencommons after the boot explicitly and also xl list
> works fine it is showing as below.
> 
> ubuntu@arm64:~$ sudo xl list
> Name                                        ID   Mem VCPUs State Time(s)
> Domain-0                                     0 16384     1     r-----    
> 1056.9
> 
> and one more thing I have installed xen from source I have compiled
> the source and copied the xen to sda1 and then installed xen tools. I
> was searching for xen installation with ubuntu and found that
> https://help.ubuntu.com/community/Xen
> link he was asking to change some network settings and use bridge
> which i haven't done. Probably this can be the issue?

Maybe. It is advisable to create a bridge named "xenbr0" in dom0:

http://wiki.xenproject.org/wiki/Host_Configuration/Networking

The quick and dirty way is:

brctl addbr xenbr0
brctl addif xenbr0 eth0
ifconfig eth0 0.0.0.0 # loose network
dhclient xenbr0

Anthony, do you have any other ideas? strace attached from Suresh's
previous email.


> Thanks
> Suresh KN V
> 
> 
> On Mon, Oct 19, 2015 at 8:42 PM, Stefano Stabellini
> <stefano.stabellini@xxxxxxxxxxxxx> wrote:
> > Hello Suresh,
> >
> > it would be good to try with a newer version of libvirt, such as libvirt
> > 1.2.15, which is the one we are using with CentOS 7. I know that some
> > important fixes went in libvirt after 1.2.2, but I don't think that
> > they are the cause of the problem you are currently seeing.
> >
> > Has /etc/sysconfig/xencommons, or /etc/init.d/xencommons, depending on
> > whether you are using systemd, been run at boot time?
> >
> > What is the output of "xl list"?
> >
> > Cheers,
> >
> > Stefano
> >
> > On Mon, 19 Oct 2015, suresh knv wrote:
> >> Hi Stefano,
> >>
> >> I am trying to install openstack with xen and ubuntu on ARM64 machine
> >> and was stuck with a problem and need some help.
> >>
> >> I am trying to install libvirt 1.2.2 on arm64 board with xen. It got
> >> installed successfully but when i run the command
> >> virsh list --all
> >>
> >> it is taking too long time does not responding and application hangs. When
> >> I tried with
> >> strace virsh list --all
> >>
> >> these are the last few lines of the log
> >> futex(0x7fae646c48, FUTEX_WAKE_PRIVATE, 2147483647) = 0
> >> gettid()                                = 8589
> >> gettid()                                = 8589
> >> gettid()                                = 8589
> >> gettid()                                = 8589
> >> gettid()                                = 8589
> >> gettid()                                = 8589
> >> gettid()                                = 8589
> >> gettid()                                = 8589
> >> gettid()                                = 8589
> >> gettid()                                = 8589
> >> gettid()                                = 8589
> >> gettid()                                = 8589
> >> gettid()                                = 8589
> >> gettid()                                = 8589
> >> gettid()                                = 8589
> >> write(5, "\0", 1)                       = 1
> >> futex(0x7fae5e56d0, FUTEX_WAKE_PRIVATE, 1) = 1
> >> rt_sigprocmask(SIG_BLOCK, [PIPE CHLD WINCH], [], 8) = 0
> >> ppoll([{fd=6, events=POLLOUT}, {fd=7, events=POLLIN}], 2, NULL, NULL,
> >> 0) = 1 ([{fd=6, revents=POLLOUT}])
> >> rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
> >> write(6, "\0\0\0\34 \0\200\206\0\0\0\1\0\0\0B\0\0\0\0\0\0\0\0\0\0\0\0", 
> >> 28) = 28
> >> rt_sigprocmask(SIG_BLOCK, [PIPE CHLD WINCH], [], 8) = 0
> >> ppoll([{fd=6, events=POLLIN}, {fd=7, events=POLLIN}], 2, NULL, NULL, 0
> >>
> >>
> >> I am attaching the complete log with the mail. Can you help me out with 
> >> this?
> >>
> >>
> >> > ________________________________________
> >> > From: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
> >> > Sent: Wednesday, September 9, 2015 3:45 PM
> >> > To: Kumar, Vijaya
> >> > Cc: Stefano Stabellini; Suresh, Kunisetty; Anthony.Perard@xxxxxxxxxx; 
> >> > Julien Grall
> >> > Subject: Re: Openstack on ARM64
> >> >
> >> > Hello Vijay,
> >> >
> >> > we are currently working on the OpenStack and Xen packages for CentOS
> >> > ARM64, they should be ready in a week or two. Maybe it would be easier
> >> > for you to just wait and use those?
> >> >
> >> > Otherwise you need Xen 4.6 (use the latest RC) with a couple of patches
> >> > for Xen: http://marc.info/?l=xen-devel&m=144130282732203 and one patch
> >> > for QEMU (attached).
> >> >
> >> > If you intend to use 64K pages, then you also need
> >> > http://marc.info/?l=linux-kernel&m=144164011832641&w=2
> >> > plus a few more patches that haven't been published yet to support dom0
> >> > 64K. But if you compile your own kernels, just use 4K and you'll be
> >> > fine.
> >> >
> >> > For Libvirt, we are using version 1.2.15.
> >> >
> >> > Regarding OpenStack, we just follow the official OpenStack documentation
> >> > to install a Nova compute node:
> >> > http://docs.openstack.org/kilo/install-guide/install/yum/content/ch_nova.html#nova-compute-install
> >> >
> >> > I hope that helps.
> >> >
> >> > Cheers,
> >> >
> >> > Stefano
> >> >
> >> >
> >> > On Wed, 9 Sep 2015, Kumar, Vijaya wrote:
> >> >> Hi Stefano,
> >> >>
> >> >>
> >> >>   We want to run Openstack on Xen on ThunderX board.
> >> >> Can you please share the details on how to install and run Openstack.
> >> >>
> >> >> A good wiki is also fine.
> >> >>
> >> >>
> >> >> Regards
> >> >>
> >> >> Vijay
> >> >>
> >> >>
> >> >>
> >>
> 

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