How do I archive qemu images with the same efficiency as gcloud

This command stub show efficiency. Around 80% on pre installed images of OSes notorious for their install size. 40g actual physical files on the disk on a fresh install archived as 5g file. Ready to uncompress and use

gcloud compute images describe

The command does not show the uncompressed file size. 40g is the output of df on a running image

My own attempt based on finding zero help on this is a disaster. Low efficiency. 20%. The OS is a whopping 30g and the results are only 25g

gzip qcow2

qemu-img convert -c -O qcow2 -o compression_type=zstd


How to enable zstd for your qcow2 files

  • I am not familiar with gcloud so it is difficult for me to answer this question. You might get more answers or get them more quickly if you explained what this gcloud does. Image archiving can be accelerated with base images, snapshots, and compression. Jun 25, 2023 at 6:51


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