docs: Allocation

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Kroese 2023-12-18 12:36:03 +01:00 committed by GitHub
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@ -89,14 +89,17 @@ docker run -it --rm -p 5000:5000 --device=/dev/kvm --cap-add NET_ADMIN --stop-ti
* ### How do I create a growable disk? * ### How do I create a growable disk?
By default, the entire capacity of the disk is reserved in advance. To create a growable disk that only allocates space that is actually used, add the following environment variable: By default, the entire capacity of the disk is reserved in advance. To create a growable disk that only allocates space that is actually used, add the following environment variables:
```yaml ```yaml
environment: environment:
ALLOCATE: "N"
DISK_FMT: "qcow2" DISK_FMT: "qcow2"
``` ```
This can also be used to convert any existing disks to the ```qcow2``` format. This can also be used to convert your existing disks to the ```qcow2``` format.
Please note that disabling preallocation will negatively affect write performance any time the image needs to grow.
* ### How do I increase the amount of CPU or RAM? * ### How do I increase the amount of CPU or RAM?