Dear all,
I use libvirt lxc to host a real-time application with priority of -50. The
native OS is fedora21 and lxc is also fedora21. Everything works fine. Linux
"top" command shows the priority is -50).
Then I use Openstack to manage lxc. The native compute node OS is CentOS7.2.
and the lxc
Dear all,
In my applications, the real-time performance is very important, so I used 4
containers, with only one application running in each container and a physical
CPU core is only dedicated to one lxc. and I must know which container is
hosted by which CPU core. That is, I need to pin a
Dear all,
I installed 8 containers using "yum --installroot=/root/fedora16lxc" to create
the container filesystem. Now I want to manage these containers with openstack.
So I need to deploy these containers by openstack which needs the container
image.
Can anyone tell me how to export my
Dear all,
I want to have a view of lxc CPU usage in openstack Dashboard. According the
Openstack official site , Openstack Ceilometer can poll libvirt daemon to
obtain CPU usage of a virtual machine. I tried the command locally on the
libvirtd host "virsh -c lxc:/// domjobinfo", I got an error
container, whether I
also can share memory between Ubuntu containers?
From: Dominique Ramaekers [mailto:dominique.ramaek...@cometal.be]
Sent: 2015年3月27日 14:47
To: WANG Cheng D; libvirt-users@redhat.com
Subject: RE: [libvirt-users] Installation of libvirt on Ubuntu
Libvirt is in the standard
Dear all,
I wonder if libvirt can work on Ubuntu.
As you know, it is very convenient to install libvirt on Fedora. I can download
the libvirt packet from libvirt.org and install it using command ./configure,
make and make install.
As I am going to install an open source simulation system
Dear all,
I want my container to run on the third CPU core and I define this by the
following xml scrpits:
vcpu placement=static cpuset=31/vcpu
When I run my application in a container terminal, I can see the application
runs on the third core as expected.
When I run my application using
Message-
From: Martin Kletzander [mailto:mklet...@redhat.com]
Sent: 2014年12月22日 18:13
To: WANG Cheng D
Cc: libvirt-users@redhat.com
Subject: Re: [libvirt-users] why CPU pinning doesn't take effect when using
lxc-enter-namespace to run an application
On Mon, Dec 22, 2014 at 08:40:03AM +, WANG
Dear all,
When I run my application in a container, sometimes the thread can exit
correctly, sometime a core dump error occurs when it exits.
But the application always exits correctly when it runs in a native fedora.
Malloc() and free() functions are used in my application. I wonder if this
Dear all,
On my last post Why a core dump error occurs when a thread exits in
container but it's correct when running in native linux might be misleading. I
did further test and the steps are described below.
1) First, the container is started (we have the first terminal window)
2)
[mailto:berra...@redhat.com]
Sent: 2014年10月23日 16:11
To: WANG Cheng D
Cc: libvirt-users@redhat.com
Subject: Re: [libvirt-users] How can a user process be automatically started
after the container is started?
On Thu, Oct 23, 2014 at 05:09:50AM +, WANG Cheng D wrote:
Dear All,
I want to start my
Dear All,
I want to start my application automatically after I start the container with a
virsh command virsh -c lxc:/// start mycontainer
How can I achieve this?
Thank you in advance.
Cheng
___
libvirt-users mailing list
libvirt-users@redhat.com
Dear all,
I want to assign multiple IP address to a container, does anybody know how to
achieve that?
Thanks in advance.
Cheng
___
libvirt-users mailing list
libvirt-users@redhat.com
https://www.redhat.com/mailman/listinfo/libvirt-users
Dear Gene,
Thank you for your response.
I want to assign a static IP address to my container, I wonder if I can achieve
this by editing the container's /etc/sysconfig/network-scripts/ifcfg-eth0. I
tried this, but failed, and eth0 is always not assigned an IP address
automatically (my host and
Dear all,
I want to run a TCP/IP application automatically after I start the container
using virsh -c lxc:/// start mycontainer. Does anybody know how to configure
the NIC automatically with an assigned IP address? I couldn't find useful
information from domain XML format spec and it only talks
Dear all,
I want to dynamically change the CPU affinity of multiple processes/threads
started in a container. Changing affinity operation is done in native OS. My
problem is how to obtain the mapping relationship between the two pids owned by
the process/thread. As you know, one pid is given by
Yes, I installed yajl-devel and 4 other rpm packags.,then it works
Thank a lot for your response.
Cheng
-Original Message-
From: Martin Kletzander [mailto:mklet...@redhat.com]
Sent: 2014年7月1日 17:58
To: WANG Cheng D
Cc: libvirt-users@redhat.com
Subject: Re: [libvirt-users] Libvirt
Yes, I installed yajl-devel and 4 other rpm packags.,then it works
Thanks a lot for your help
Cheng
-Original Message-
From: Claudio Bley [mailto:cb...@av-test.de]
Sent: 2014年7月1日 15:57
To: WANG Cheng D
Cc: libvirt-users@redhat.com
Subject: Re: [libvirt-users] Libvirt installion error
Dear Jan,
I installed yajl-devel and 4 other rpm packags.,then it works
Thanks a lot for your help
Cheng
-Original Message-
From: Ján Tomko [mailto:jto...@redhat.com]
Sent: 2014年7月1日 15:56
To: WANG Cheng D; libvirt-users@redhat.com
Subject: Re: [libvirt-users] Libvirt installion error
Dear all,
I want to run a process in a container with a real-time (RT) priority. When the
sched_setscheduler(0, SCHED_RR, sparam) is called in the container, an error
is reported which is operation not permitted
I had added the following line in the file /etc/security/limits.conf for both
the
Dear all,
I want to setup a privileged container, which means I can set the priority of a
process to SCHED_RR (real-time) dynamically by calling sched_setscheduler() in
a C program running on a container.
In my system (host: fedora19, container: fedora19, libvirt 1.2.5), my C code
reports
Dear all,
I am installing the libvirt 1.2.5 on my newly installed Fedora19.
When I run ./configure, an error is reported: You must install the libyajl
library headers to compile libvirt
In fact, the package yajl-2.0.4-2fc19.x86_64.rpm has been installed on the
fedora19.
I found several links
:-(
Thank you for your response.
Cheng
-Original Message-
From: Ján Tomko [mailto:jto...@redhat.com]
Sent: 2014年7月1日 15:56
To: WANG Cheng D; libvirt-users@redhat.com
Subject: Re: [libvirt-users] Libvirt installion error: You must install the
libyajl library headers to compile libvirt
On 07/01
Sorry.
I confused yajl with yajl-devel. I will try again
Thanks
cheng
-Original Message-
From: Ján Tomko [mailto:jto...@redhat.com]
Sent: 2014年7月1日 15:56
To: WANG Cheng D; libvirt-users@redhat.com
Subject: Re: [libvirt-users] Libvirt installion error: You must install the
libyajl
Sorry.
I confused yajl with yajl-devel. I will try again
Thanks
cheng
-Original Message-
From: Claudio Bley [mailto:cb...@av-test.de]
Sent: 2014年7月1日 15:57
To: WANG Cheng D
Cc: libvirt-users@redhat.com
Subject: Re: [libvirt-users] Libvirt installion error: You must install
Dear all,
What I want to do is to share a hugepage memory segment between the host and a
container (I am trying to use intel DPDK package in container). For a normal
memory (4k page), the memory sharing can be achieved by memory-mapped I/O
(mmap())method with the same disk file on the host
Dear all,
There are two containers hosted by my host machine. And the host machine has
two same 1G NICs. I want to assign a dedicated NIC to one container. The host
and the other container share the second NIC. How can I achieve this?
Any comments will be highly appreciated.
Cheng
Dear all,
I use virsh command to start a container and connect to it.
When I use virsh -c lxc:/// console mycontainer, I only have one console. I
wonder how to open multiple terminal windows for the same container.
Thank you in advance
Cheng Wang
___
2) Open a new post to see if lxc experts can help you
Good luck!
Cheng
From: Filip Maj [mailto:f...@saucelabs.com]
Sent: 2014年4月15日 1:57
To: WANG Cheng D
Cc: libvirt-users@redhat.com
Subject: Re: [libvirt-users] LXC + USB passthrough = Operation not permitted
I'd also like to point out
Dear Fil,
I am not sure if my answer can help you.
I had ever asked a similar question to Daniel and I was using a thirty-party
card. As a container uses a shared kernel with the host, so hostdev
mode='subsystem' doesn't make sense. Maybe you can try to use hostdev
mode='capabilities'. Please
is a char device, but it really works.
If I use “ hostdev mode=’subsystem’”, it will fail to expose the PCIe card.
From: Filip Maj [mailto:f...@saucelabs.com]
Sent: 2014年4月14日 11:26
To: WANG Cheng D
Cc: libvirt-users@redhat.com
Subject: RE: [libvirt-users] LXC + USB passthrough = Operation not permitted
Dear all,
I am not clear about the 'vcpu' element for CPU allocation. I allocated 1 vCPU
to my container, after I started the container, I ran 4 computation-intensive
tasks on the container. And I found all the 4 physical core are 100% used (my
host has 4 physical cores and no other application
Dear yuanle,
Thank you for the information. You might be right.
But I am still confused about what’s the difference between a vCPU and a
physical core.
Regards,
Cheng
From: sylecn [mailto:syl...@gmail.com]
Sent: 2014年3月17日 15:06
To: WANG Cheng D
Cc: libvirt-users@redhat.com
Subject: Re: [libvirt
. It seems that the exposed file cannot be
recognized by shmget() function, although ftok() can work and return the value.
Do you have an idea?
Best wishes.
Cheng Wang
-Original Message-
From: Daniel P. Berrange [mailto:berra...@redhat.com]
Sent: 2014年2月27日 18:30
To: WANG Cheng D
Cc
Dear all,
In my system, two containers need to exchange data as quick as possible and the
two containers are hosted by the same physical machine, I wonder if socket is
the only method for communication between containers?
Thank you.
Cheng Wang
___
currently.
Have a nice day,
Cheng Wang
-Original Message-
From: Daniel P. Berrange [mailto:berra...@redhat.com]
Sent: 2014年1月16日 18:34
To: WANG Cheng D
Cc: libvirt-users@redhat.com
Subject: Re: [libvirt-users] If it's possible for a third-party PCIe card to be
shared by multiple
Dear Daniel,
Thank you for the information. I think I should study more about libvirt's Node
Device functions.
Have a nice day.
Cheng
-Original Message-
From: Daniel P. Berrange [mailto:berra...@redhat.com]
Sent: 2014年1月16日 18:34
To: WANG Cheng D
Cc: libvirt-users@redhat.com
Subject: Re
running in the which solely operates the PCIe
card, all the containers will send/receive data to this process via socket.
With my warmest regards,
Cheng Wang
-Original Message-
From: Daniel P. Berrange [mailto:berra...@redhat.com]
Sent: 2014年1月15日 18:46
To: WANG Cheng D
Cc: libvirt-users
Dear Daniel,
Thank you for the information. :-)
Cheng
On Wed, Jan 15, 2014 at 05:49:23AM +, WANG Cheng D wrote:
Dear all
I allocate only one vcpu for the container by the following statement,
that is, I want to pin the vcpu to physical core 2.
vcpu placement='static' cpuset=2 1/vcpu
Dear all,
I have a thirty-party PCIe card in my host which can work properly in native
mode.
I wonder if this card can be shared by multiple containers.
As far as the network interface is concerned, too many efforts have been made
for it. Two dedicated cgroup resource
Dear all
I allocate only one vcpu for the container by the following statement, that is,
I want to pin the vcpu to physical core 2.
vcpu placement='static' cpuset=2 1/vcpu
My host has 4 physical cores. Before test, all the 4 cores are idle. After I
run 4 processes in the container, I found all
Dear all,
I failed to start the container's network interface automatically. I have to
start it manually each time after the container finishes booting.
I know that in a native fedora, if we want the network interface to start
automatically, we should edit
Dear all,
I failed to start the linux container's network interface automatically. I have
to start it manually each time after the container finishes booting.
I know that in a native fedora, if we want the network interface to start
automatically, we should edit
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