A website about linux, kvm,gluster, ceph, kubernetes and programming
Humble Ah…… Why I forgot to write about dropwatch ? “Packets are dropped” , these strings are quite common in IT world, but how to prove it and where it is dropped ? Till now, people were behind ‘netstat’ ( for ex:netstat -s ) utiilty to see it , but retrieving more information on where it …
Libvirt provides support for ‘sharing a disk with mulitple VMs’, even virt-manager utililty has the support for it. How-ever there is a common misunderstanding that, once you enable ‘sharable’ it is done and you can concurrently write data to it. Please note that, the <shareable/> flag tells libvirt that the disk will be *concurrently* accessed …
Today I got this question, Is it possible to resize the guest block device without shutting down the guest? Or in another way, Is it possible to do online resizing of guest block devices ? The answer was ‘YES‘, it is possible with a switch called ‘blockresize’ of ‘virsh’ command : Below example would illustrate …
Simple, isn’t it ? why do you need to blog about it ? It was my thought til now. but I see its an unanswered question for many.. Highlight dropdown menu and just do ‘PrtSc’ (Print screen button ) .. thats it ? Unfortunately NO . If you press, ‘Prt Scrn’ key, the opened drop …
My (best) friend ‘Douglas’ ( vdsm engineering) was poking me to record a faq about ovirt in ovirt.org for quite some time now. Today, I came up with that. I believe it will be useful for ovirt enthusiasts . Here is the link : https://www.ovirt.org/develop/faq.html Let me know your comments/suggestions, I will be be ‘delighted’ …
It is quite some time I am receiving queries on ovirt-shell/ cli usage. Even-though I didn’t store those questions with me, I thought I will point something on this topic. Soon I will come up with more notes on this topic. Upto that, this is a place holder draft. But, dont get disappointed, you have …
In past weeks, I received some queries on gluster and ovirt integration .. People are seriously looking for its integration or details on , whats there now and where its moving.. I informed them about the work being done on this area, how-ever before I get more queries on this , I thought, I will …
The QEMU Monitor Protocol (QMP) is a JSON-based protocol which allows applications to communicate with a QEMU instance. Read more about QMP here :http://wiki.qemu.org/QMP Its a client server architecture where the data can be exchanged. The monitor protocol is really useful for debugging, experimenting and also useful for collecting statistics and for fetching data about …
When browsing through my laptop filesystem, I noticed one of the scripts which I used in past to convert a data domain to export domain to get my VMs back from a rhevm crashed instance.. Please note that, I had only one master domain in a NFS DC. My NFS master data domain metadata had …
Day by day, Ovirt is embedded with new features which make Ovirt an awesome piece of software … Ovirt 3.1 has added a new feature called ‘QUOTA’, quota new feature which enhance Ovirt/ RHEV project with its 3.1 version. It is really handy when you have to define acls for your setup. Better usage of …