similar to: does anyone know how to communicate between domUs on xen?

Hi, I believe I can post this here. I have a domU ( Redhat 6) running in Paravirt mode. When I migrate this domU to another host, looks like the domU is freezing in the other host. When I take it back to original host ,it starts to run normally and this is what can see in dmesg of domU : suspending xenstore... trying to map vcpu_info 0 at ffff88000434b020, mfn b67660, offset 32 cpu 0 using

Hello! I recently upgraded a number of Debian testing packages (three days ago) and just now rebooted the system, with the effect that the Xen domUs don't know their `eth0' devices anymore: #v+ # ifconfig eth0 eth0: error fetching interface information: Device not found #v- I'm using xen-hypervisor-3.0.3-1-i386-pae 3.0.3-0-2 and upgraded linux-image-2.6.18-4-xen-686 from

Hi, All I''m just new to this list, I''m started to dealing with OSS Xen to XCP migration earlier this week, seem the domUs installed via virt-install are function well, but domUs copied via dom0 are failed during bootup process, finally I realize if I could fix this on my OSS Xen will resolve all. Can I have any suggestion from you please ? *Details* *Source XenHost* OS:

Hi, I want to know how everything communicates with XenStore. Do domUs use the front-end/back-end driver to dom0 and then the back-end driver contacts xenstored? In particular, how do the xenstore-* commands work on a dom0 and domU? And when should unix-domain sockets be used to communicate with xenstored? Thanks, Hayawardh _______________________________________________ Xen-users mailing

Hello, On a xenserver with several (39) domUs, we experience problems with the system clock of the domUs. The clock seems to drift away several seconds up to two minutes from the dom0 clock. We do have set independent_wallclock=0. According to the docs (i.e. http://wiki.xensource.com/xenwiki/InstallationNotes) that way domUs should use the dom0 clock, but apparently that''s not the case.

All, Is there a way to setup serial communication between dom0 and domU. The idea is to have some way of exchanging messages between dom0 and domUs. Certainly, it is possible to use s host-only network, and ssh or shared file system to exchange data. However, there could be cases where the dom0 is not networked. You may want to automate configuring domUs from dom0. Any suggestions. Arijit

Sorry for the top post, blackberry. Well I like to be able to install my machines in the xenstore with 'xm new' and then manage them from there, but virt-install and virsh are useful too, so I just use CentOS base then replace their xen with the one from xen.org keeping libvirt and now I have the best of both worlds. The commercial one isn't without gripes too. Like I wish they had

Package: xen-utils-common Version: 4.3.0-3 Severity: normal Dear Maintainer, I've just set up a fresh Jessie system using the installer dated 2014-03-05, then installed and enabled Xen 4.3. I've done this quite a few times before using Wheezy and 4.1. I set up xenbr0, then created a test domU using xen-create-image, which completed without issue. However I was unable to start the new

Hi All, Having an issue with xen-4.0-unstable where after completing a live migration, an arp is never sent out to update the switch with the new location of the mac address. Network is configured as per libvirt''s instructions with the xen network-script disabled and the bridge (xenbr0) always up.

Dom0 is Wheezy 64 bit with kernel 3.2.0-1-amd64 version 3.2.4-1, xen from xen-unstable.hg changeset 24858:a88ba599add1 plus these patch for not fail build: http://xen.1045712.n5.nabble.com/PATCH-0-of-2-rename-libxl-yajl-gen-alloc-td5469362.html And also this change for lib patch modified with multiarch support: vi config/StdGNU.mk LIBLEAFDIR_x86_64 ?= lib DomUs PV working, domUs with

I''m creating a new domU using ''virsh create <xmlfile>'' without specifying the MAC address within the XML file, under the assumption that the dom0 or hypervisor generates the MAC address for me. Next I''d like to get the MAC address that was assigned to this new domU, and I don''t see a way to get that information from the command line via virsh

Package: xcp-xapi Version: 1.3.2-6 Severity: important Tags: upstream xe vm-memory-target-set does not write new target to /local/domain/ID/memory/target. Balloon in guest domain is expecting this value to be changed to do selfballooning. This breaks 'dynamic memory control' feature. Steps to reproduce: 1) Setup any PV virtual machine with static-memory-min < static-memory-max 2)

Hi, George sent a patch on this problem before, but it was not completed. This patch makes libxl use xenbus to communicate with xenstored if libxl cannot open a socket. There''s a place that does not close fd in the case of failure, which is also fixed in this patch. -----------------------------------------Patch------------------------------------------------------ diff -r eff592364826

Hello! I've noticed this problem two times now.. last time I fixed it by rebooting the (centos 5.1 x86 32b) xen host/dom0. Symptoms: - Already running domUs (debian 2.6.18-6-xen-686 32b PAE) continue running and working OK - Cannot start new domUs (debian 2.6.18-6-xen-686).. kernel bootup just hangs before running initrd. Same domU with the exact same xen domU cfgfile worked earlier.

I have a CentOS 5.1 dom0 running on a machine with two cores and 4gb of memory. It runs three 4.6 domUs and one 5.1 domU. Just out of the blue the other night all the 4.6 domUs crashed, but the dom0 stayed up. I ran xm console (domU-name) and got the Oops information below. I didn't get anything from the 5.1 domU. I think it had been rebooted a few days before and hadn't come up

I have a CentOS 5.1 dom0 running on a machine with two cores and 4gb of memory. It runs three 4.6 domUs and one 5.1 domU. Just out of the blue the other night all the 4.6 domUs crashed, but the dom0 stayed up. I ran xm console (domU-name) and got the Oops information below. I didn't get anything from the 5.1 domU. I think it had been rebooted a few days before and hadn't come up

Dear all, I wanted to know the processes running inside domU from dom0. Is it possible? if yes,how to know? Thanks & Regards, Yashwanth _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users

I''m looking at building a xenstore-based watchdog, as described at http://lists.xensource.com/archives/html/xen-users/2005-07/msg00597.html However, being somewhat new to xenstore, I''d appreciate some pointers. - What portions of the xenstore namespace should I use? I''m looking for at least two settings writable by the DomUs: A flag to enable/disable the watchdog

Hi, recently on irc channel (##xen) was some "discussion" about xen vs kvm... There was idea that it would be nice if domUs could survive dom0 restart, but this needs, for example, to have xenstored running in separate domain. In 2009 Alex Zeffertt posted some patches (http://lists.xensource.com/archives/html/xen-devel/2009-04/msg00696.html) to add this functionallity, but they

Hi everybody! I know this is an ultraknown issue, but in my case i think it is going beyond. As you may guess my domUs clocks go faster or slower They come with the same OS (Centos 5 2.6.18-92.1.18.el5 ) but each of them have a different clock speed. Why? Dom0 does not syncronize domUs : So i watched out looking for any solution.... First attempt: /proc/sys/xen/independent_wallclock = 0