Displaying 20 results from an estimated 900 matches similar to: "libvirt with lxc: internal error The 'cpuacct', 'devices' & 'memory' cgroups controllers must be mounted"
2012 Aug 17
1
getCPUStats of a domain by a non-root user - libvirtError: Requested operation is not valid: cgroup CPUACCT controller is not mounted
Hello,
I'm trying to use libvirt as a non-root user to obtain statistics on the
CPU usage by VMs using the Python API. I'm performing basically the
following steps:
import libvirt
conn = libvirt.openReadOnly(None)
dom = conn.lookupByUUIDString('268e38ea-1bc7-41e4-c19e-8eff682e58e4')
dom.getCPUStats(True, 0)
However, they result in the following error:
libvir: QEMU Driver
2012 Jan 25
2
How to change libvirt / cgroup interaction?
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
2011 Jan 23
2
Cgroup
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
2012 Dec 13
1
RHEL6 cgroup error after a few days of uptime
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
2014 Feb 09
3
libvirt/qemu and cgroups
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
2014 Dec 14
0
Difficulty configuring Cgroups on redhat/centos
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
2013 Mar 14
1
cgroups not working?
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
2011 Nov 01
1
auto-set /cgroup/*/libvirt/qemu/<vm name>/ directory permissions on creation
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
2017 Feb 28
0
Re: Redhat 7: cgroup CPUACCT controller is not mounted
On Mon, Feb 27, 2017 at 01:44:44PM +0000, youssef.elfathi@orange.com wrote:
>Hi,
>
>With a non-root user account, I am launching virtual machines and would like to get CPU stats for each Core (using python API or not) but face the following problem:
>
>- When I issue the command "virsh --readonly cpu-stats MY_DOMAIN" I got the following error:
>
>error: Failed to
2017 Feb 28
0
Re: Redhat 7: cgroup CPUACCT controller is not mounted
On Tue, Feb 28, 2017 at 03:22:54PM +0000, youssef.elfathi@orange.com wrote:
>Thanks Martin to confirm that the issue is due to privilege access. How can I run a domain as non-root and be able to access the cpu information?
>
You need to use the system libvirt daemon, so you need to connect to
qemu:///system instead of qemu:///session. Good write-up about the
differences is here:
2013 Aug 21
2
Information needed regarding the libvirt version libvirt-1.0.6-1
Hi,
We have upgraded the libvirt version from libvirt-1.0.5 to libvirt-1.0.6-1
on our linux machine. After this upgrade "virsh cpu-stats <domain>" command
is not working on our HardWare.
*virsh # cpu-stats test
error: Failed to retrieve CPU statistics for domain 'test'
error: internal error error accessing cgroup cpuacct for vcpu*
**
*# cat /proc/cgroups
#subsys_name
2017 Feb 28
2
Re: Redhat 7: cgroup CPUACCT controller is not mounted
Thanks Martin to confirm that the issue is due to privilege access. How can I run a domain as non-root and be able to access the cpu information?
-----Original Message-----
From: Martin Kletzander [mailto:mkletzan@redhat.com]
Sent: Tuesday, February 28, 2017 16:18
To: EL FATHI Youssef OBS/OINIS
Cc: libvirt-users@redhat.com
Subject: Re: [libvirt-users] Redhat 7: cgroup CPUACCT controller is not
2014 Feb 10
2
Re: libvirt/qemu and cgroups
> The precise answer depends on which version of systemd you have. In
> any systemd host though, systemd should ensure all the filesystems
> are mounted correctly. If you have libvirt >= 1.1.1 and systemd >= 205
> then you can use its "slice" and "scope" concepts to setup grouping
> of VMs. If you have older systemd, then you have to setup groups
>
2017 Feb 27
2
Redhat 7: cgroup CPUACCT controller is not mounted
Hi,
With a non-root user account, I am launching virtual machines and would like to get CPU stats for each Core (using python API or not) but face the following problem:
- When I issue the command "virsh --readonly cpu-stats MY_DOMAIN" I got the following error:
error: Failed to retrieve CPU statistics for domain 'MY_DOMAIN'
error: Requested operation is not valid: cgroup
2015 Jul 08
2
cpuacct and emulator/cpuacct
Hello,
Does it exist some documentation concerning following topic ?
What's difference between following perf counters :
/cgroup/cpuacct/libvirt/qemu/test/cpuacct.usage
and
/cgroup/cpuacct/libvirt/qemu/test/emulator/cpuacct.usage
Thx .
Regards,
J.P. Ribeauville
P: +33.(0).1.47.17.27.78
Puteaux 3 Etage 5 Bureau 4
jpribeauville@axway.com<mailto:jpribeauville@axway.com>
2015 Jul 09
0
Re: cpuacct and emulator/cpuacct
On Wed, Jul 08, 2015 at 09:11:11AM +0000, Jean-Pierre Ribeauville wrote:
>Hello,
>
>Does it exist some documentation concerning following topic ?
>
>What's difference between following perf counters :
>
>/cgroup/cpuacct/libvirt/qemu/test/cpuacct.usage
>and
>/cgroup/cpuacct/libvirt/qemu/test/emulator/cpuacct.usage
>
I don't know from the top of my head whether
2015 Sep 24
1
Guest cpuacct counters and others location
Hi,
My piece of code ( C langage) uses cgroups to retrieve counters related to cpu and memory usage related to KVM guests hosted by the host where this code runs.
I noticed that depending on the O.S. running on the host , these counters are not found at the same location :
CentOS 7 :
ls /sys/fs/cgroup/cpuacct/machine.slice/machine-qemu\\x2drhel6.0.scope/vcpu0
cgroup.clone_children
2014 Feb 15
2
lxc and cgroups
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 ,
2011 Feb 15
2
monitiring cpu usage via cgroup
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
2014 Feb 10
0
Re: libvirt/qemu and cgroups
On Mon, Feb 10, 2014 at 12:29:10AM +0100, arnaud gaboury wrote:
> 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