Watch out – lvmcache doesn’t support snapshots yet! I discovered this when my backup system tried to create a snapshot of a filesystem to back up after I enabled lvmcache on it. I removed the cache pool logical volume (disabling lvmcache for the volume) using lvremove, and will re-visit once lvmcache’d volumes have snapshot support…
Fed up with FedUp? or Upgrading from Fedora 18 to Fedora 20
I like the concept and convenience of over-the-network upgrades with minimal downtime, but FedUp (Fedora‘s new official method) did not work quite right for my Fedora 18 to Fedora 20 upgrade without some hackery. Here is what I had to do to get the upgrade to work: Moved the FedUp cache directories off the /var…
GNU parted partition alignment warnings – solution
Getting those pesky “Warning: The resulting partition is not properly aligned for best performance” messages when creating partitions on your new 3TB-4TB disk using GNU parted under Linux? Start parted with the “-a optimal” command line parameter to tell parted to use optimal alignment! Example: /sbin/parted -a optimal /dev/sdd Thanks go to this post on…
How to Quiet a Garage Door and Opener
One of our garage door openers died of old age recently – it was an old builder-model (in other words, as cheap as the builder can get) chain drive opener that was incredibly noisy. I took advantage of the opportunity to reduce the noise made by the garage door opener and the door itself especially…
Fedora 16 Upgrade
I upgraded our server to Fedora 16 from Fedora 14 recently, so I thought I’d continue my tradition of posting the solutions to the problems I encountered to help others. Two major changes in Fedora recently increased the difficulty of this upgrade: the switch to grub2 from the grub legacy bootloader, and the switch to…
New Weather Station!
The new Vantage Pro2 Plus weather station worked, recording about one inch of precipitation during the recent rainfall! Now I just need to get the USB interface working and wview set up to analyze the results. We installed the weather station up on the roof along with the new Wineguard HS-1000 omnidirectional HD antenna, which…
Hit Games Developed in Austin
I recently heard from a friend that past (and maybe present) West Coast game industry executives view Austin as developing no successful titles generating significant profit and/or receiving critical acclaim. I want to convince them otherwise, so here’s the a partial list of hit games developed in Austin: Dishonored (Arkane/Bethesda) – Released October 2012 Sales…
Fedora 14 could not find root filesystem on RAID-1 array, solution
Here’s a problem I ran into recently: I temporarily switched the root filesystem of my Fedora 14 install from RAID-5 to non-RAID. After I received the new SSD drives, I switched it to RAID-1 but the dracut boot sequence could not find the RAID-1 array and mount the root filesystem, ending in the errors ‘Can’t…
nut 2.6.0 not working with USB CyberPower System UPS, fixed in trunk
Have a USB-attached CyberPower System UPS but can’t get it to work with Network UPS Tools aka nut 2.6.0 (such as from the Fedora 14 or 15 rpms)? See the link to the rpms below I built. The errors you might see (especially when running usbhid-ups -D -D -D) include “could not connect to ups”,…
Oldie but Goodie: Lego Camelot!
An oldie but goodie! Can’t go wrong combining Monty Python, the Holy Grail, musical knights, and Lego! 🙂