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Protech

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Reply with quote  #1 

Hi,

I have a 2008R2 Server that was P2V'd several years ago using DSK2VHD.

This is hosted on a 2012R2 Hyper-V Server.

There is one Dynamically expanding drive C:\ which has a Max size of 250Gb and a Current file size of 150Gb, therefore there is 100Gb free.

I noticed that there is a huge (1Tb) AVHD file associated with this Server, which seem to grow about 1Gb every hour.

There are no checkpoints present and if I shut the Server down, it merges the data from the AVHD in to the VHD and the AVHD disappers as expected.

So...

Why is an AVHD file being created which keeps growing when there is still 100Gb free on the Dynamically expanding disk?

How do I stop this happening?


Cheers guys 😉

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Pieter

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Reply with quote  #2 
Are you using Hyper-V replica and/or DPM backup ?
Both solutions create snapshots, and thus AVHD files.

>> Why is an AVHD file being created which keeps growing when there is still 100Gb free on the Dynamically expanding disk?
AVHD files are created when VSS snapshot are made. Has nothing to do with free space inside the VHD files.



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Pieter Demeulemeester
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wobble_wobble

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Reply with quote  #3 
You need to check and see if there is a know snapshot and delete it.
If there isn't then you will need to manually merge it.

Hyper-V is more flaky than VMware at doing that, a lot more flaky.


https://www.altaro.com/hyper-v/how-to-merge-hyper-v-checkpoints/

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