859301b009
The agent needs to update device entries in the OCI spec so that it has the correct major:minor numbers for the guest, which may differ from the host. Entries in the main device list are looked up by device path, but entries in the device resources list are looked up by (host) major:minor. This is done one device at a time, updating as we go in update_spec_device_list(). But since the host and guest have different namespaces, one device might have the same major:minor as a different device on the host. In that case we could update one resource entry to the correct guest values, then mistakenly update it again because it now matches a different host device. To avoid this, rather than looking up and updating one by one, we make all the lookups in advance, creating a map from (host) device path to the indices in the spec where the device and resource entries can be found. Port from the Go agent in Kata 1, https://github.com/kata-containers/agent/commit/d88d46849130 Fixes: #703 Signed-off-by: David Gibson <david@gibson.dropbear.id.au> |
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| .github/workflows | ||
| ci | ||
| docs | ||
| pkg/logging | ||
| snap | ||
| src | ||
| tools | ||
| .gitignore | ||
| .travis.yml | ||
| CODE_OF_CONDUCT.md | ||
| CODEOWNERS | ||
| CONTRIBUTING.md | ||
| LICENSE | ||
| Makefile | ||
| README.md | ||
| utils.mk | ||
| VERSION | ||
| versions.yaml | ||
Kata Containers
Welcome to Kata Containers!
The purpose of this repository is to act as a "top level" site for the project. Specifically it is used:
-
To provide a list of the various other Kata Containers repositories, along with a brief explanation of their purpose.
-
To provide a general area for Raising Issues.
Raising issues
This repository is used for raising issues:
-
That might affect multiple code repositories.
-
Where the raiser is unsure which repositories are affected.
Note:
- If an issue affects only a single component, it should be raised in that components repository.
Kata Containers repositories
CI
The CI repository stores the Continuous Integration (CI) system configuration information.
Community
The Community repository is the first place to go if you want to use or contribute to the project.
Code Repositories
Kata Containers-developed components
Agent
The kata-agent runs inside the
virtual machine and sets up the container environment.
KSM throttler
The kata-ksm-throttler
is an optional utility that monitors containers and deduplicates memory to
maximize container density on a host.
Runtime
The kata-runtime is usually
invoked by a container manager and provides high-level verbs to manage
containers.
Trace forwarder
The kata-trace-forwarder is a component only used
when tracing the agent process.
Additional
Hypervisor
The qemu hypervisor is used to
create virtual machines for hosting the containers.
Kernel
The hypervisor uses a Linux* kernel to boot the guest image.
Documentation
The docs directory holds documentation common to all code components.
Packaging
We use the packaging to create packages for the system components including rootfs and kernel images.
Test code
The tests repository hosts all test code except the unit testing code (which is kept in the same repository as the component it tests).
Utilities
OS builder
The osbuilder tool can create a rootfs and a "mini O/S" image. This image is used by the hypervisor to setup the environment before switching to the workload.
kata-agent-ctl
kata-agent-ctl is a low-level test tool for
interacting with the agent.
Web content
The www.katacontainers.io repository contains all sources for the https://www.katacontainers.io site.
Credits
Kata Containers uses packagecloud for package hosting.