similar to: Using Wireshark on CentOS without UI

Hi Michal, Thank you for your suggestion. My apologies that I took sometime to get back on further confirmation. Regrettably, my tshark is still unable to find libvirt payload inside packet capture, though it lists libvirt as a possible filter. # rpm -ql libvirt-wireshark-1.2.9.3-2.fc21.x86_64 /usr/lib64/wireshark/plugins/1.12.5/libvirt.so As I used wireshark 1.12.6 version, I

Hi I wanted to download and install the net-snmp package. Usually on my other CentOS boxes i use the following command to do it: yum install net-snmp I was able to successfully install net-snmp on 4 of my CentOS boxes but not on one of them. It reports me the following error message: [root at localhost yum.repos.d]# yum install net-snmp Loaded plugins: fastestmirror Determining fastest

Hi I am using QEMU 0.12.1 as the hypervisor in my RHEL installation of 6.5. I wanted to know if there are any side-effects with respect to VM image corruption when i use SIGTERM signal to kill a qemu-kvm process which effectively stops my VM running on the host. Appreciate if you can provide me some valuable information in this regard. Thanks Jatin

Thank you Michal. With your pcap, I could confirm that, libvirt dissector worked in my environment as well. Yes, it could be that, my pcap do not have libvirt rpc packets correctly though I would have expected. I am checking on it. Regards, Gowrishankar On Thursday 07 January 2016 03:51 PM, Michal Privoznik wrote: > On 07.01.2016 08:05, gowrishankar wrote: >> Hi Michal, >>

On 4/14/2015 4:58 PM, Daniel P. Berrange wrote: > On Tue, Apr 14, 2015 at 04:53:52PM +0530, Jatin Davey wrote: >> On 4/14/2015 4:42 PM, Dominique Ramaekers wrote: >>> About Spice: I think it’s good practice to use spice because it improves >>> the performance of the VM in general by improving screen performance. If >>> your VM is constantly displaying output,

Thanks Dominique & Daniel. Looks like i need to upgrade my VMs kernel to make it aware of virtio. Found this information from this link: http://wiki.libvirt.org/page/Virtio#Disk_.28block.29_device_driver I tried without upgrading the Kernel and as soon as i start my VM it got into Kernel Panic. I will try using virtio after upgrading my VMs kernel. Thanks for all the responses and

Hi, I am trying libvirt plugin in wireshark to dissect RPC payload in TCP, but finding dissector code not really working. My env is Fedora core 21 (x86_64) and installed packages are as follow: wireshark-1.12.6-1.fc21.x86_64 libvirt-wireshark-1.2.9.3-2.fc21.x86_64 Earlier, just after installation, I noticed libvirt.so available only in /usr/lib64/wireshark/plugins/1.12.5/ . Wireshark

Hi I have a linux box which has CentOS running in it. I logged into the box using root and wrote a script in the /home/proc_threads directory. saved the file and quit. I changed the file permissions such that any user could execute it using the "chmod 777 filename" command. When i log out and log in as a non-root user i was not able to execute the script though. Could some one

Hi Not a specific question on CentOS but in general about java processes running on Linux boxes. I have a couple of java processes running on my linux boxes , They basically form a component of a bigger application. My point of interest is to monitor the resource usage of the java processes running on the linux box. So currently when i have these procs running on my box they show up as

Hi All I have two hosts. Host A and Host B Host A routing table ------------------------ [root at localhost ~]# route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 172.29.110.0 172.29.109.1 255.255.255.0 UG 0 0 0 eth0 172.29.109.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 169.254.0.0 0.0.0.0

Hi I know we can get the total number of processes running in the system using the 'ps -A' command but is it possible to get the total number of threads running in the system ? Is this information exposed using any of the MIB's ? Thanks Jatin

How do i know which NTP server is my linux box contacting to synchronize its time with that of the server ? Thanks Jatin

On 1/28/2015 11:07 PM, John R Pierce wrote: > On 1/28/2015 4:32 AM, Jatin Davey wrote: >> I am using RHEL 6.5 on my server. >> >> From top command i can see that the processors in my server are >> spending a lot of time on wait for I/O. >> I can see high percentage in terms of 30-50% on "wa" time. >> >> Here is the df output about the disk

Hi All We use CentOS 6.6 for our application. I have profiled the application and find that we have a heavy requirement in terms of Disk writes. On an average when our application operates at a certain load i can observe that the disk writes / second is around 2 Mbps (Average). The block size set is 4k ******************* [root at localhost ~]# blockdev --getbsz /dev/sda3 4096

On 2/2/2015 8:52 PM, Jatin Davey wrote: > So , You dont think that any configuration changes like increasing the > number of volumes or anything else will help in reducing the I/O wait > time ? not by much. it might reduce the overhead if you use LVM volumes for virtual disks instead of using files, but if you're doing too much disk IO, there's not much that helps other

Hi All I looked at this page for reference to using virtio drivers on KVM guests. http://wiki.libvirt.org/page/Virtio In the requirements section it is mentioned that we need a virtio compatible guest with kernel >= 2.6.25 One of my guest has this version: [root@localhost ~]# uname -a Linux localhost 2.6.18-164.el5 #1 SMP Thu Sep 3 03:28:30 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux I was

Hi All My guest is a CentOS 5.4 VM: [root at localhost ~]# uname -a Linux localhost 2.6.18-164.el5 #1 SMP Thu Sep 3 03:28:30 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux [root at localhost ~]# cat /etc/*release CentOS release 5.4 (Final) I wanted to know if the virtio drivers on this guest are stable. The reason for asking this question is that i found this link:

2015-05-06 9:12 GMT+03:00 Jatin Davey <jashokda@cisco.com>: > My guest is: > > [root@localhost ~]# cat /etc/*release > CentOS release 5.4 (Final) > > Let me know if i need to provide any more information in this regard. In case of centos you can use 2.6.18 because redhat backported all needed virtio drivers from never kernels. -- Vasiliy Tolstov, e-mail:

On Mon, Feb 2, 2015 at 11:37 PM, Jatin Davey <jashokda at cisco.com> wrote: > > I will test and get the I/O speed results with the following and see what > works best with the given workload: > > Create 5 volumes each with 150 GB in size for the 5 VMs that i will be > running on the server > Create 1 volume with 600GB in size for the 5 VMs that i will be running on >

On 5/6/2015 1:18 PM, Leon Fauster wrote: > Am 06.05.2015 um 09:33 schrieb Jatin Davey <jashokda at cisco.com>: >> My guest is a CentOS 5.4 VM: > > Best practice: update to the latest OS version: > > # cat /etc/redhat-release > CentOS release 5.11 (Final) > > > >> [root at localhost ~]# uname -a >> Linux localhost 2.6.18-164.el5 #1 SMP Thu Sep 3