I have had a stressed time, and had no time to actually write down anything here. This is pity, since I have been doing so many things worth sharing. I will start with a small one now – how to convert a physical machine into Xen-based VM. I assume you know the drill of how…
I have had some work done lately with NetApp SnapMirror. I have snapped-mirrored some volumes and qtrees and I wanted to monitor their use and behavior over the line. As you can expect, site-to-site replication of data is a fragile thing, especially when done on the level of the storage device, which is agnostic to…
Warning: This is not the recommended method if you’re not sure you know what you’re doing. Linux Initial Ram Disk (initrd) is a mechanism to perform disk-independent actions before attempting to mount the ‘/’ disk. These actions usually include loading disk drivers, setting up LVM or software RAID, etc. The reason these actions are performed within initrd…
On RHEL-type of systems, with virt-manager (libvirt), you can make use of virt-manager to easy your life. I, for myself, prefer to work with ‘xm‘ tools, but for the initial install, virt-manager is the quickest and most simple available tool. To install a new Linux VM, all you need to follow this flow Create an…
Using iSCSI with dm-multipath is rather common setup. With iSCSI running over Ethernet cables, which are too easy to disconnect (either on purpose or by mistake), being cheap and common technology – multipath becomes a must. If you have multiple network links, this is only expected that you use multipath for your iSCSI configuration. It’s…
It has been long since I had the time to write here. I have recently been involved more and more with XenServer virtualization, as you might see in the blogs, and following a solution to a rather common problem, I have decided to post it here. The problem: When attempting to boot a Linux VM…
