Clik here to view.
Nova’s way of using a disk image when it boots a guest for first time
Let’s see how Nova — the compute component of OpenStack — uses a disk image from the time it was initially imported into Glance (OpenStack’s repository for virtual machine disk images) till a new...
View ArticleClik here to view.
OpenStack nova — dealing with unused base images
Nova uses disk image cache management to handle unused base disk images, validate their integrity, etc. In this entry, let’s try to find out how unused base images are cleaned up. For context on...
View ArticleClik here to view.
Debugging nova — a small illustration with pdb
The other day, I was testing non-ascii characters with nova commands. I started with adding an ssh key to nova with a non-ascii name, not realizing key-pair names won’t support them. This is how we...
View ArticleClik here to view.
Finding serial console log of a nova instance
The other day I was debugging why a volume booted nova instance doesn’t get dhcp leases. For that I need to find networking information of the instance during boot. Fortunately, nova attempts to log...
View Article