Hi Andrew, sorry about the dyndbg. It all lokked like it would be tied to that but right now I am not sure it is. I need to check the code again. If anything else fails we can do a special kernel. I have the same issue as Boris in that I am not able to cause the same problem on HVM guests locally. I am using an Ubuntu base install (Xen-4.2.2 + dom kernel 3.8). xend-config is set to allow ballooning. Now the question is how memory for a guest is configured on the host. I can see the issue on a c3.large instance but we have no way of knowing anything outside the guest.
One note, too. There is one other memory related message in the guests dmesg: [ 0.000000] NUMA: Warning: invalid memblk node 0 [mem 0x100000000-0x0fffffff] I vaguely remember NUMA related problems at some point. But I cannot remember whether this was something that needed fixes in the hypervisor, the dom0 kernel or the guest kernel. Or combinations of that. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1304001 Title: xen:balloon errors in 14.04 beta Status in “linux” package in Ubuntu: Confirmed Bug description: Xen balloon errors on HVM instances on EC2 (Xen 4.2.amazon): ubuntu@ip-10-63-20-99:~$ uname -a Linux ip-10-63-20-99 3.13.0-23-generic #45-Ubuntu SMP Fri Apr 4 06:58:38 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux ubuntu@ip-10-63-20-99:~$ dmesg |grep xen [ 0.000000] xen:events: Xen HVM callback vector for event delivery is enabled [ 0.494613] xen:balloon: Initialising balloon driver [ 0.496046] xen_balloon: Initialising balloon driver [ 0.500077] xen:balloon: reserve_additional_memory: add_memory() failed: -17 [ 0.541047] Switched to clocksource xen [ 0.562579] xen: --> pirq=16 -> irq=8 (gsi=8) [ 0.562622] xen: --> pirq=17 -> irq=12 (gsi=12) [ 0.562649] xen: --> pirq=18 -> irq=1 (gsi=1) [ 0.562673] xen: --> pirq=19 -> irq=6 (gsi=6) [ 0.562705] xen: --> pirq=20 -> irq=4 (gsi=4) [ 0.920527] xen: --> pirq=21 -> irq=47 (gsi=47) [ 0.920596] xen:grant_table: Grant tables using version 1 layout [ 1.029661] xen_netfront: Initialising Xen virtual ethernet driver [ 1.236083] xenbus_probe_frontend: Device with no driver: device/vfb/0 [ 2.516067] xen:balloon: reserve_additional_memory: add_memory() failed: -17 [ 6.533941] xen:balloon: reserve_additional_memory: add_memory() failed: -17 [ 14.560075] xen:balloon: reserve_additional_memory: add_memory() failed: -17 [ 30.592064] xen:balloon: reserve_additional_memory: add_memory() failed: -17 [ 62.688153] xen:balloon: reserve_additional_memory: add_memory() failed: -17 [ 94.752164] xen:balloon: reserve_additional_memory: add_memory() failed: -17 [ 126.816161] xen:balloon: reserve_additional_memory: add_memory() failed: -17 [ 158.880084] xen:balloon: reserve_additional_memory: add_memory() failed: -17 [ 190.944069] xen:balloon: reserve_additional_memory: add_memory() failed: -17 [ 223.008141] xen:balloon: reserve_additional_memory: add_memory() failed: -17 [ 255.072112] xen:balloon: reserve_additional_memory: add_memory() failed: -17 [ 287.136190] xen:balloon: reserve_additional_memory: add_memory() failed: -17 [ 319.200053] xen:balloon: reserve_additional_memory: add_memory() failed: -17 [ 351.264164] xen:balloon: reserve_additional_memory: add_memory() failed: -17 [ 383.328080] xen:balloon: reserve_additional_memory: add_memory() failed: -17 [ 415.392077] xen:balloon: reserve_additional_memory: add_memory() failed: -17 [ 447.456112] xen:balloon: reserve_additional_memory: add_memory() failed: -17 [ 479.520128] xen:balloon: reserve_additional_memory: add_memory() failed: -17 [ 511.584110] xen:balloon: reserve_additional_memory: add_memory() failed: -17 [ 543.648181] xen:balloon: reserve_additional_memory: add_memory() failed: -17 [ 575.712070] xen:balloon: reserve_additional_memory: add_memory() failed: -17 [ 607.776178] xen:balloon: reserve_additional_memory: add_memory() failed: -17 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1304001/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
