Use the composite disk support in crosvm.
Depends on this:
https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1667767
Performance characteristics:
Composite disk assembly on disk: 60 seconds
Composite disk assembly on tmpfs: 20 seconds
Composite disk support in crosvm: 0.3 seconds
bpttool creates "holes" between the partition table and the first disk
and between the last disk and the backup partition table. Android seems
to use these so this change creates separate temporary files for them.
Test: launch_cvd -composite_disk=composite.img
Bug: 135293952
Change-Id: I7b22839b7ea6b1bd85ea89cbc0f82a4838c822ef
5 files changed