<div dir="ltr"><div>Yesterday I've decided to give centos xen a try and I get this messages also.<br><br>[root@fhpxen1 ~]# dmesg -c<br>System RAM resource 48000000 - 4fffffff cannot be added<br>xen_balloon: reserve_additional_memory: add_memory() failed: -17<br>
device vif10.0 entered promiscuous mode<br>ADDRCONF(NETDEV_UP): vif10.0: link is not ready<br>device vif10.0-emu entered promiscuous mode<br>virbr0: topology change detected, propagating<br>virbr0: port 2(vif10.0-emu) entered forwarding state<br>
virbr0: port 2(vif10.0-emu) entered forwarding state<br>System RAM resource 48000000 - 4fffffff cannot be added<br>xen_balloon: reserve_additional_memory: add_memory() failed: -17<br>System RAM resource 48000000 - 4fffffff cannot be added<br>
xen_balloon: reserve_additional_memory: add_memory() failed: -17<br>System RAM resource 48000000 - 4fffffff cannot be added<br>xen_balloon: reserve_additional_memory: add_memory() failed: -17<br>System RAM resource 48000000 - 4fffffff cannot be added<br>
xen_balloon: reserve_additional_memory: add_memory() failed: -17<br>System RAM resource 48000000 - 4fffffff cannot be added<br>xen_balloon: reserve_additional_memory: add_memory() failed: -17<br>System RAM resource 48000000 - 4fffffff cannot be added<br>
xen_balloon: reserve_additional_memory: add_memory() failed: -17<br>System RAM resource 48000000 - 4fffffff cannot be added<br>xen_balloon: reserve_additional_memory: add_memory() failed: -17<br>System RAM resource 48000000 - 4fffffff cannot be added<br>
xen_balloon: reserve_additional_memory: add_memory() failed: -17<br>System RAM resource 48000000 - 4fffffff cannot be added<br>xen_balloon: reserve_additional_memory: add_memory() failed: -17<br>System RAM resource 48000000 - 4fffffff cannot be added<br>
xen_balloon: reserve_additional_memory: add_memory() failed: -17<br>System RAM resource 48000000 - 4fffffff cannot be added<br><br><br>[root@fhpxen1 ~]# cat /sys/devices/system/xen_memory/xen_memory0/info/current_kb<br>1048568<br>
[root@fhpxen1 ~]# cat /sys/devices/system/xen_memory/xen_memory0/target_kb<br>1048576<br>[root@fhpxen1 ~]#<br><br>[root@fhpxen1 ~]# xl info<br>host : fhpxen1<br>release : 3.4.54-8.el6.centos.alt.x86_64<br>
version : #1 SMP Tue Jul 23 17:29:30 UTC 2013<br>machine : x86_64<br>nr_cpus : 8<br>max_cpu_id : 7<br>nr_nodes : 1<br>cores_per_socket : 4<br>threads_per_core : 2<br>
cpu_mhz : 3400<br>hw_caps : bfebfbff:2c100800:00000000:00007f40:77fafbff:00000000:00000021:00002fbb<br>virt_caps : hvm hvm_directio<br>total_memory : 32630<br>free_memory : 28071<br>
sharing_freed_memory : 0<br>sharing_used_memory : 0<br>free_cpus : 0<br>xen_major : 4<br>xen_minor : 2<br>xen_extra : .2-23.el6<br>xen_caps : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64 <br>
xen_scheduler : credit<br>xen_pagesize : 4096<br>platform_params : virt_start=0xffff800000000000<br>xen_changeset : unavailable<br>xen_commandline : dom0_mem=1024M,max:1024M loglvl=all guest_loglvl=all<br>
cc_compiler : gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-3)<br>cc_compile_by : mockbuild<br>cc_compile_domain : <a href="http://centos.org">centos.org</a><br>cc_compile_date : Thu Jul 18 13:42:23 UTC 2013<br>
xend_config_format : 4<br><br><br><br><br></div><div><br><br></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Fri, Aug 2, 2013 at 12:10 PM, David Vrabel <span dir="ltr"><<a href="mailto:david.vrabel@citrix.com" target="_blank">david.vrabel@citrix.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="HOEnZb"><div class="h5">On 01/08/13 19:28, Shaun Reitan wrote:<br>
> My /var/log/messages log is being flooded with kernel messages showing<br>
> the following messages<br>
><br>
> Aug 1 11:22:52 host43 kernel: System RAM resource 48000000 - 4fffffff<br>
> cannot be added<br>
> Aug 1 11:22:52 host43 kernel: xen_balloon: reserve_additional_memory:<br>
> add_memory() failed: –17<br>
><br>
> Doing a search I found a thread from xen-devel that talks a bit about<br>
> it. I’m not sure if this is related to the same issue or if that issue<br>
> was ever fixed. When I cat current_kb and target_kb the values don’t<br>
> match, they are just barely off. I have not tried setting them to match<br>
> yet.<br>
><br>
> <a href="http://marc.info/?t=135601508900004&r=1&w=3" target="_blank">http://marc.info/?t=135601508900004&r=1&w=3</a><br>
> <<a href="http://marc.info/?t=135601508900004&r=1&w=3" target="_blank">http://marc.info/?t=135601508900004&r=1&w=3</a>><br>
><br>
> [root@host ~]# cat<br>
> /sys/devices/system/xen_memory/xen_memory0/info/current_kb<br>
> 1048532<br>
> [root@host ~]# cat /sys/devices/system/xen_memory/xen_memory0/target_kb<br>
> 1048576<br>
<br>
</div></div>This should be fixed in the latest version of the kernel packages.<br>
Which version are you using?<br>
<br>
David<br>
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</blockquote></div><br></div>