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David Gibson 64aa562355 agent: Correct mount point creation
mount_storage() first makes sure the mount point for the storage volume
exists.  It uses fs::create_dir_all() in the case of 9p or virtiofs volumes
otherwise ensure_destination_exists().  But.. ensure_destination_exists()
boils down to an fs::create_dir_all() in most cases anyway.  The only case
it doesn't is for a bind fstype, where it creates a file instead of a
directory.  But, that's not correct anyway because we need to create either
a file or a directory depending on the source of the bind mount, which
ensure_destination_exists() doesn't know.

The 9p/virtiofs paths also check if the mountpoint exists before calling
fs::create_dir_all(), which is unnecessary (fs::create_dir_all already
handles that case).

mount_storage() does have the information to know what we need to create,
so have it explicitly call ensure_destination_file_exists() for the bind
mount to a non-directory case, and fs::create_dir_all() in all other cases.

fixes #2390

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-09-16 12:24:47 +10:00
.github/workflows tests: Correct heading in static checks test 2021-09-14 20:17:27 +10:00
ci ci: Temporarily skip agent shutdown test on s390x 2021-08-25 16:34:38 +02:00
docs Merge pull request #2332 from sameo/topic/host-cgroups 2021-09-14 09:09:10 -07:00
pkg/logging logging: Use guard to make threaded logging safe 2021-03-29 14:32:11 +01:00
snap versions: Update qemu to v6.1.0 2021-09-11 16:43:22 +10:00
src agent: Correct mount point creation 2021-09-16 12:24:47 +10:00
tools Merge pull request #2502 from dgibson/qemu-6.1 2021-09-15 11:06:14 +10:00
utils branch: change 2.0-dev to main 2021-01-22 15:49:35 +08:00
.gitignore gitignore: Ignore *~ editor backup files 2021-02-19 09:54:53 +11:00
CODE_OF_CONDUCT.md docs: Add contributing and code of conduct docs 2018-02-06 10:41:09 +00:00
CODEOWNERS docs: fix static check errors 2020-09-28 11:01:03 +08:00
CONTRIBUTING.md docs: Add contributing and code of conduct docs 2018-02-06 10:41:09 +00:00
Glossary.md docs: added a glossary to support SEO tactics 2021-07-20 11:22:58 +02:00
LICENSE Initial commit 2017-12-06 23:01:13 -06:00
Makefile makefile: Include kata-deploy targets 2021-09-09 14:32:08 +00:00
README.md docs: Removed mention of 1.x 2021-07-30 10:58:22 +01:00
utils.mk build: Add make vendor 2021-07-14 13:59:41 +02:00
VERSION release: Kata Containers 2.3.0-alpha0 2021-08-31 18:43:09 +02:00
versions.yaml Merge pull request #2634 from dgibson/newer-rust 2021-09-16 12:23:37 +10:00

Kata Containers

Welcome to Kata Containers!

This repository is the home of the Kata Containers code for the 2.0 and newer releases.

If you want to learn about Kata Containers, visit the main Kata Containers website.

Introduction

Kata Containers is an open source project and community working to build a standard implementation of lightweight Virtual Machines (VMs) that feel and perform like containers, but provide the workload isolation and security advantages of VMs.

Getting started

See the installation documentation.

Documentation

See the official documentation (including installation guides, the developer guide, design documents and more).

Community

To learn more about the project, its community and governance, see the community repository. This is the first place to go if you wish to contribute to the project.

Getting help

See the community section for ways to contact us.

Raising issues

Please raise an issue in this repository.

Note: If you are reporting a security issue, please follow the vulnerability reporting process

Developers

Components

Main components

The table below lists the core parts of the project:

Component Type Description
runtime core Main component run by a container manager and providing a containerd shimv2 runtime implementation.
agent core Management process running inside the virtual machine / POD that sets up the container environment.
documentation documentation Documentation common to all components (such as design and install documentation).
tests tests Excludes unit tests which live with the main code.

Additional components

The table below lists the remaining parts of the project:

Component Type Description
packaging infrastructure Scripts and metadata for producing packaged binaries
(components, hypervisors, kernel and rootfs).
kernel kernel Linux kernel used by the hypervisor to boot the guest image. Patches are stored here.
osbuilder infrastructure Tool to create "mini O/S" rootfs and initrd images and kernel for the hypervisor.
agent-ctl utility Tool that provides low-level access for testing the agent.
trace-forwarder utility Agent tracing helper.
ci CI Continuous Integration configuration files and scripts.
katacontainers.io Source for the katacontainers.io site.

Packaging and releases

Kata Containers is now available natively for most distributions. However, packaging scripts and metadata are still used to generate snap and GitHub releases. See the components section for further details.

Glossary of Terms