tree c0b34141f5ee75e73a6e490e40540928594453f6
parent d6a88022d0c8ffdd2b938f161b8825148762b099
author Lorenz Brun <lorenz@monogon.tech> 1710782545 +0100
committer Lorenz Brun <lorenz@monogon.tech> 1710852688 +0000

m/test/l/cluster: use sparse-aware copy for images

This speeds up the image copy significantly as the file is less than 10%
allocated. Especially for many concurrent runs this greatly reduces disk
bottlenecking.

This has been tested by comparing the SHA256 hash of both the original
and the copied image, which is still the same.

Change-Id: I65f62537f048bc180cd732c53a03f980e016b723
Reviewed-on: https://review.monogon.dev/c/monogon/+/2874
Tested-by: Jenkins CI
Reviewed-by: Serge Bazanski <serge@monogon.tech>