m/test/launch: build image at runtime
Test launch now builds the node disk image from the OCI image, instead
of creating a qcow2 snapshot of the pre-built disk image. This speeds up
tests and test cluster launch.
The OCI image is uncompressed and payloads are not verified, which
enables the previously implemented copy_file_range optimization. If the
host file system supports reflinks, this has a similar effect as the
qcow2 snapshot had previously: Building the image is very fast as the
rootfs data is not copied on disk. On my machine, it takes 30 ms.
The build before launching a cluster is now faster: The MkImage step
taking 6 s is replaced by MkOCI taking 1 s. The majority of this time is
spent by Bazel computing hashes of files. For MkImage, the generated
file was a 5 GB disk image consisting mostly of zeroes, which took a
long time to hash.
Additionally, the qcow2 layer added some overhead, which is now gone.
The HA e2e test previously took 103 s on my machine, now it takes 80 s.
Change-Id: I0ce5059626cc682061c26ac3c8d11b752e641c60
Reviewed-on: https://review.monogon.dev/c/monogon/+/4294
Tested-by: Jenkins CI
Reviewed-by: Tim Windelschmidt <tim@monogon.tech>
diff --git a/metropolis/test/launch/launch.go b/metropolis/test/launch/launch.go
index 759bf28..3864eb2 100644
--- a/metropolis/test/launch/launch.go
+++ b/metropolis/test/launch/launch.go
@@ -22,6 +22,7 @@
xKernelPath string
xInitramfsPath string
xNodeImagePath string
+ xAbloaderPath string
)
func init() {
@@ -30,7 +31,7 @@
&xSwtpmPath, &xSwtpmSetupPath, &xSwtpmLocalCAPath,
&xSwtpmCertPath, &xCerttoolPath, &xMetroctlPath,
&xOvmfCodePath, &xOvmfVarsPath, &xKernelPath,
- &xInitramfsPath, &xNodeImagePath,
+ &xInitramfsPath, &xNodeImagePath, &xAbloaderPath,
} {
*path, err = runfiles.Rlocation(*path)
if err != nil {