Hello everyone,
i'm planning on running one, possibly more, Windows 2012R2 Servers as a VBox Machine.
I performed a clean install of W2012R2, applied the latest security patches, sysprep'd and shut it down.
Now i have a perfectly fine template to use. In order to save disk space for multiple machines, obviously snapshots come into mind.
You probably already guessed where this is going... My plan was to create a ZVOL - not VBox snapshots for each Server instance. Similar to VMware where you can build trees of snapshots and decide from which to start.
It just wont work though. My assumption is that ZFS COW mechanism does not store its deltas in the snapshot file, but keeps writing to the original file, and saves the block before new data is written...
Can anyone confirm this?
I can't test it right now, but would it work if i keep the zvol template as it is, and create a snapshot from it on the VBox Layer for each Machine instance?
regards,
kleinem
P.S: I just realized that this is a kinda rough introduction - i will write a proper one when i get home :)
i'm planning on running one, possibly more, Windows 2012R2 Servers as a VBox Machine.
I performed a clean install of W2012R2, applied the latest security patches, sysprep'd and shut it down.
Now i have a perfectly fine template to use. In order to save disk space for multiple machines, obviously snapshots come into mind.
You probably already guessed where this is going... My plan was to create a ZVOL - not VBox snapshots for each Server instance. Similar to VMware where you can build trees of snapshots and decide from which to start.
It just wont work though. My assumption is that ZFS COW mechanism does not store its deltas in the snapshot file, but keeps writing to the original file, and saves the block before new data is written...
Can anyone confirm this?
I can't test it right now, but would it work if i keep the zvol template as it is, and create a snapshot from it on the VBox Layer for each Machine instance?
regards,
kleinem
P.S: I just realized that this is a kinda rough introduction - i will write a proper one when i get home :)