Add make targets to build the linux kernel #600
Merged
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Copied from the Firecracker main repo: https://github.com/firecracker-microvm/firecracker/tree/83ec483d4254936e1e2fd4adfe94761611a74a93/resources/guest_configs This allows us to have customized kernel builds for firecracker-containerd that are similar to upstream Signed-off-by: Kern Walster <[email protected]>
Firecracker 1.0.0's build tool parses the kernel version out of the specified config file to determine which kernel sources to downlod. The build tool requires the patch version to be specified: https://github.com/firecracker-microvm/firecracker/blob/v1.0.0/tools/devtool#L2015 However, the linux kernel cdn drops the patch version if it is 0 (i.e. sources for kernel 5.10.0 are hosted with a filename like linux-5.10.tar.gz). This means that firecracker-1.0.0 cannot build kernel 5.10.0. Signed-off-by: Kern Walster <[email protected]>
Signed-off-by: Kern Walster <[email protected]>
Firecracker-containerd requires a linux kerenl which is provided precompiled by default. For most use-cases, this is acceptable however it prevents us from enabling additional features (e.g. FUSE for remote snapshotters) and from updating kernel versions in a timely manner. This change adds optional `make kernel` and `make install-kernel` targets which compile a 4.14 kernel by default with FUSE enabled. 5.10 can be compiled instead with `KERNEL_VERSION=5.10 make install-kernel`. The `install-kernel` target overwrites any previously installed kernel (either the default pre-built or a previous `make install-kernel`) Signed-off-by: Kern Walster <[email protected]>
kzys
approved these changes
Mar 28, 2022
henry118
approved these changes
Mar 28, 2022
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This PR adds the ability to build a kernel from source instead of using the default pre-built that is downloaded during build.
By default, the pre-built kernel will be used however it can be overridden with:
This will build a 4.14 kernel that is similar to the pre-built, except that FUSE is enabled.
Alternatively, kernel 5.10 can be used by setting
KERNEL_VERSION=5.10, e.g.This is a step towards #597, but we still need to either:
or