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…
It has been a long while, I know. I was busy with life, work and everything around it. Not much worth mentioning. This, however, is something else. I have discovered an issue with Citrix XenServer 5.0 (probably the case with 5.5, but I have other issues with that release) using NetApp through NetApp API SR…
XenServer is a wonderful tool. One of the better parts of it is its powerful scripting language, powered by the ‘xe’ command. In order to capture a mass of snapshots, you can either do it manually from the GUI, or scripted. The script supplied below will include shell functions to capture Quiesce snapshots, and it…
I have a nice SCSI tape connected to a single server. This allows for on-demand backups, with the hope (and seldom, with the established knowledge) that I can recover the data I have there. Old computers, decommissioned computers and systems I wish to erase and reuse are seldom backed-up, just because of the effort in…
Oracle begin to push their Clusterware as a 3rd party HA framework. In this article we will review a quick example of how to do it. I will refer to this post as a quick-guide, as this is by no means any full-scale guide. This article assumes you have installed Oracle Clusterware following one of…
