How to identify whether the machine supports full-virtual guests?
To run fully virtualized guests, host CPU support is needed. This is typically referred to as Intel VT, or AMD-V. To check for Intel VT support look for the 'vmx'…
To run fully virtualized guests, host CPU support is needed. This is typically referred to as Intel VT, or AMD-V. To check for Intel VT support look for the 'vmx'…
If the machine supports para virtual guests, then you should see a "pae" flag in /proc/info. This means - the machine has PAE support and can run para virtual guests.#…
Command: storage show disk –a (or) vol status –r Filer> storage show disk –a Disk: 2b.18Shelf: 1Bay: 2Serial: XYZASDFVendor: NETAPPModel: X266_MTOMC320PADRev: R5VVRPM: 5400WWN: x:200:xxxx:1817d2 Filer> vol status -r RAID Disk Device HA …
This command displays the latency details of each NFS call and its histogram. Zero the counter with –z option before you start debugging. You should be in advanced privilege to…
A very good article on Unix Load averages and how it is calculated . Worth reading for every sysadmin and performance engineers.
In project management tools, now there is an alternative to MS Project. OpenProj is a new open source solution for project management. It’s simple user interface is very similar to…
lguest - A simple and tiny virtualization solution for x86. URL : http://lguest.ozlabs.org/
http://code.google.com/p/ganeti/ - Ganeti is a virtual server management software tool built on top of Xen virtual machine monitor - found this in Google code. Ganeti features: support for Xen virtualization.…
Xen is an external hypervisor; it assumes control of the machine and divides resources among guests. On the other hand, kvm is part of Linux and uses the regular Linux…
Dmidecode reports information about your system's hardware as described in your system BIOS. This command gives you vendor name, model name, serial number, BIOS version, asset tag as well as…
Find clock different between two hosts in linux - using clockdiff # clockdiff -o unixfoo2 .................................................. host=unixfoo2 rtt=60(3)ms/54ms delta=22153ms/22153ms Mon Oct 29 01:42:13 2007 # clockdiff -o unixfoo3 .................................................. host=unixfoo3…
Redhat ET ( emerging technology ) url : http://et.redhat.com/page/Main_Page . This has good information on the developments around redhat's virtualization.
To see the timestamp at which a system call executes and how much time spent on each system, try -Tttt option in strace. There are different formats of this.-t :…
Here are some useful Netapp Storage Administation commands. Some commands are for experience netapp administrators. For learning purpose try these commands on Netapp simulator. More commands on Netapp Administration Pocket…
Hugepages is a mechanism that allows the Linux kernel to utilize the multiple page size capabilities of modern hardware architectures. Linux uses pages as the basic unit of memory, where…