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Introduction We needed to migrate a big XFS filesystem from one virtual machine to another virtual machine. The original XFS system did have project quotas enabled and we wanted to preserve them. Actually we were not migrating the XFS filesystem but all the system so that meant some key files specific to XFS were already … Leer más

Last night I had to migrate a physical GNU/Linux installation to a virtual GNU/Linux installation based on KVM. Usually the Linux kernel or its initrd enables virtio by default and everything works as expected and vda1 is used as the root filesystem. However this was not the case yesterday. I got a message similar to: … Leer más

Introduction As you might know source code is very similar to a cooking recipe. I’m going to borrow (and adapt) some lines from Free as in Freedom by Sam Williams for describing the analogy: Both program and a cooking recipe provide useful step-by-step instructions on how to complete a desired task and can be easily … Leer más

I have had recently to debug my fence_ovh agent which I suppose I will update soon.I am writing some notes specifically for fence_ovh. Most of them might be applied also to other fencing agents. If you are trying to develop your own fencing agent these notes might help you. The idea is not to learn … Leer más