Limitations of Resizing a ThawSpace

The minimum ThawSpace size is the actual data space being used or 1 MB (whichever is higher) and the maximum ThawSpace size is the actual partition size or 120 GB (whichever is lower). Increasing the size of a ThawSpace does not have any limitations. However, reducing the size of a ThawSpace may not be possible in some circumstances.

For example, a 10 MB ThawSpace is successfully resized when increased to 20 MB even if data is stored on the entire ThawSpace. However, if a 10 MB ThawSpace is reduced to anything less than 10 MB, it may not be possible to resize a ThawSpace depending on where the data is written. If the data is distributed over the 10 MB space, the ThawSpace cannot be resized. However, if the data is written only at the start of the ThawSpace, it can be resized to the limit where there is continuous free space till the end of the ThawSpace.

To defragment the ThawSpace, copy all the data out of it, delete the ThawSpace, re-create the ThawSpace with the desired size and copy all the data back to the ThawSpace. You can also copy the data, delete the data from the ThawSpace and copy the data back to the ThawSpace, it does not guarantee that the operating system will use a contiguous drive space.