Posts Tagged ‘linux’

Recently I noticed that my clock was beginning to skew, and NTP wasn’t able to keep up with it.  This is due to having a “system clock” and a “hardware clock” the system clock is the one that the OS controls, while the hardware clock is controlled by the BIOS and runs on the hardware.  […]

Monday, July 15th, 2013 at 06:00 | Comments Off
Categories: How To, Linux

I have been doing a bit of cleanup around my home file server, and have noticed that while I have a really beautiful collections of family photographs there is no logical organization around these photos.  I have many duplicates names, which would collide in the event of trying to merge multiple directories, and even worse […]

Monday, June 17th, 2013 at 06:00 | Comments Off
Categories: How To, Linux

Today we are going to go through the process of creating a clustered file system on a pair of Oracle Linux 6.3 nodes.  This exercise is not very resource intensive.  I am using two VMs each with 1GB of RAM a single CPU and a shared virtual disk file in addition to the OS drivers. […]

Monday, March 4th, 2013 at 06:00 | 2 comments
Categories: How To, Linux, OCFS2

Today I am revisiting my previous post on Openvswitch on Ubuntu 12.04.  Things have changed since then.  Previously Openvswitch was relatively new and as such the userland tools (with libvirt being the one I use) didn’t support it yet, so while you could have used Openvswitch by executing the kvm processes for each VM manually.  […]

Wednesday, October 24th, 2012 at 06:00 | 46 comments

Logical Volume Manager makes the dynamic expansion of file systems dead stupid simple.  However there is a weakness, if you are using a partitioned file system as your Physical Volume (PV) then you will end up needing to expand the file system if you ever need to grow the actual storage.  This can be avoided […]

Monday, August 20th, 2012 at 06:00 | 4 comments
Categories: How To, Linux, LVM2
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