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Bink on
on August 7 2008, 10:06 AM
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Charles Sterling:
I just started playing with Hyper V images for the Team System team and noticed the directory of our primary image contains 48 gigabytes of AVHD files! Looking it up on Technet it turns out AVHD files are Snapshots….Fair Enough how do i merge our ONE snapshot in Hyper-V? According to the documentation you do this by editing the virtual hard drive…Unfortunately the UI in my Hyper –V it doesn’t give me that option. In doing more some more reading and by talking to Michael Kleef you can force the merge by deleting the snapshot(s) in the Hyper –V.
Not certain who thought of that as a good UI but it worked kinda –at least the UI indicating it was merging the snapshot.
-But it didn’t seem to do much for the files sitting on the disk.
The reason i started looking at these files was to copy the image to another computer.
So in the mean time i decided to export all 48gb of the AVHDs and the 7gb VHD to an export directory….I import this into a new (STOPPED) image; as i am sitting there wondering about the ramifications for starting the exact same server on our corpnet i notice the Hyper-V status of my stopped image changes to “Waiting to merge disk…” That’s interesting, what does that mean? As i watch my “Snapshots” folder i notice one of these AVHD files disappear and a couple of minutes later another goes PSFFT –gone!
Turns out the Virtual image had several snapshots created against but never had any down time to magically merge them back to the base VHD.
Edit Virtual Hard Disk Wizard
You can use the Edit Virtual Hard Disk Wizard to perform various actions that modify virtual hard disks. The available actions differ depending on the type of disk you select.
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