similar to: Again with same Cgroup issue :)

Hello All, i am trying to set "memory.limit_in_bytes" for all process created by libvirt.But i am not able to achieve this on RHEL systems in Ubuntu servers creating memory cgroup for "libvirt-qemu" user solves the issue.But in case of RHEL system i tried to create a group by editing "cgconfig.conf" and then changing cgrules.conf and restarted cgconfig and

On Centos 6.4 x64,with libvirt-0.10.2-18.el6.x86_64 i am trying to set "memory.limit_in_bytes" for all qemu process. changed "cgconfig.conf" group mygroup{ perm { admin { uid = root; gid = root; } task { uid = qemu; gid = kvm;

Hi, I'm trying to use cgroups to limit the apache webserver but this doesn't seem to work as far as I can tell. I modified cgconfig.conf like this: group webserver { cpu { cpu.shares="250"; } } and addes this to cgrules.conf: *:httpd * webserver Looking into the "webserver" cgroup shows that the pid's of

Dear list, I am building a Arch server on my Arch box. My tools are QEMU/KVM and libvirt to manage the guest, systemd as system manager. I am looking at implementing the Linux Control Groups facilities for resource management. Even after long hours of reading, I am not quite sure about how to deal with the cgroups facilities. First, do I really need to care about all that, or libvirt and

Dear list, I am bulding a VM using libvirt and lxc for linux container. I have an issue with my cgroups settings: gabx@hortensia ➤➤ ~ # virsh start dahlia error: Failed to start domain dahlia error: internal error: No valid cgroup for machine dahlia My environement: Host : Arch Linux - systemd 208-11, libvirt 1.2.1-4 guest : Arch Linux , machine name : dahlia , /etc/libvirt/lxc/dahlia.xml ,

Is there a way to automatically set the permissions of cgroups directories created by libvirt when a VM is launched? Although it looks like I can set permissions on top-level /cgroup directories via cgconfig.conf, the cgconfig.conf manpage says "Permissions are related only to enclosing control group and are not inherited by subgroups.". From this, I believe that when libvirt

hi, I am currently investigating a bug with libvirt lxc. Whenever I do a systemctl daemon-reload on the host, my container loses his memory limit and then reports having access to 8 exabyte of memory. I have tracked the issue down to two parts: memory.limit_in_bytes jumps from the correct value to 9223372036854771712. libvirt lxc appears to set the memory limit in transient way without writing

Hello, I'm running Debian Sid with libvirt/qemu/kvm packages from experimental: $ qemu --version QEMU emulator version 0.13.0 (Debian 0.13.0+dfsg-2), Copyright (c) 2003-2008 Fabrice Bellard $ kvm --version QEMU emulator version 0.13.0 (qemu-kvm-0.13.0 Debian 0.13.0+dfsg-2), Copyright (c) 2003-2008 Fabrice Bellard $ libvirtd --version libvirtd (libvirt) 0.8.6 /etc/libvirt/qemu.conf

Hi all I have CentOS Linux release 7.0.1406, libvirt 1.2.7 installed. Just after create and start inside LXC container present cgroups. Example for memory: [root@ce7-t1 /]# ls -la /sys/fs/cgroup/memory/ total 0 drwxr-xr-x 2 root root 0 Sep 15 17:14 . drwxr-xr-x 12 root root 280 Sep 15 17:14 .. -rw-r--r-- 1 root root 0 Sep 15 17:14 cgroup.clone_children --w--w--w- 1 root root 0 Sep 15

Hi I was asking about the fedora 14 kernel if it is good enough for cgroup usage because I am trying to set a cgroup under cpu subsytem ( /dev/cgroup/cpu/group1/ ) that have /cpu.rt_runtime_us of 100000 while cpu.rt_period_us has a value of 1000000 i.e a ratio of 1/10 . still when I run a task (endless loop) in that group (cgexec -g cpu,cpuset:group1 ./test) it gets all the cpu core time

Hi, I have OS 'image' that boots via PXE and mounts over NFS. (7.5.1804). I am wanting to explore allowing cgroup usage on this configuration. The root image is exported read-only over NFS and am using statetab & rwtab to allow some persistent parts of the filesystem as well as read/write where needed. I have tried setting /sys in the statetab and this causes the machine to fail,

Hello libvirt users, I'm using the cgroup with QEMU guests. At /etc/libvirt/qemu.conf, I have the following parameter: cgroup_controllers = [ "cpu" ] This controller is successfully mounted and libvirt is able to create subgroups for each VM, it's really great the cgroups support in libvirt. The problem is that I can only set the parameters of a given cgroup under the cpu

Hi all > Has anyone seen this issue? We're running containers under CentOS 7.2 > and some of these containers are reporting incorrect memory allocation > in /proc/meminfo. The output below comes from a system with 32G of > memory and 84GB of swap. The values reported are completely wrong. yes, it's occured time to time on our installations. Centos 7.2 + libvirt 1.2.18 and

Hi, I'm running OpenStack to manage LXC instance through libvirt. The same setting runs perfectly well on Ubuntu 12.04, while on CentOS 6u3, libvirt dumped following message when starting lxc instance. virsh -c lxc:/// start instance-00000032 error: internal error The 'cpuacct', 'devices' & 'memory' cgroups controllers must be mounted Really appreciated if

I have a RHEL6 that hosts many kvm virtual machines. It has been working fine for a couple years. I apply errata updates about once a week. In the last couple weeks, I've ran into a bug where the virtual machines start failing to start with a cgroup error message. If I reboot the host (very disruptive) then things start working normaly for a few days. Can I configure qemu/libvirt not to use

Hi Currently we are using cgroups to limit samba memory usage on our target we have limited the memory to 20MB and we are able to see samba is restricted to it. With this we are able to restrict the cache memory to ~34MB (never goes beyond this) BUt issue we arere facing is the Buffers are increasing gradually and it is not able to restrict. Commands Used to restrict memory on target: echo

Hi there, Do you know if there is a way to modify how libvirt interacts with the cgroup? Because, I successfully add the /dev/net/tun support in my LXC container by doing: echo c 10:200 rwm >> /cgroup/libvirt/lxc/instance-00000005/devices.allow But when I restart the instance/LXC container, this option has gone. How can I make this persistant? Is there a configuration file? Thanks

Hello All, We were under the assumption that Cgroups memory controller, limits memory based on just the RSS size of the process. However, i see that the process is getting killed even when the RSS size is very low compared to the limit in bytes. For example: cat memory.stat cache 85880266752 rss 2441216 rss_huge 0 mapped_file 8192 swap 0 pgpgin 29265847812 pgpgout 29244880354 pgfault

I'm trying to permanently change memory allocation for a libvirt-lxc domain. So far I tried changing memory in memory.limit_in_bytes under /cgroup/memory/libvirt/lxc/<container>/.  This didn't help. It appears that libvirt is not reading changes in cgroup. My requirements are 1) Be able to dynamically change memory of a LXC domain without reboot 2) The memory change must survive

On 08/08/2013 05:03 PM, Brano Zarnovican wrote: > On Thu, Aug 8, 2013 at 9:39 AM, Martin Kletzander <mkletzan@redhat.com> wrote: >> At first let me explain that libvirt is not ignoring the cache=none. >> This is propagated to qemu as a parameter for it's disk. From qemu's >> POV (anyone feel free to correct me if I'm mistaken) this means the file >> is