This commit introduces generic support for running the VMM in rootless mode in runtime-rs:
1.Detect whether the VMM is running in rootless mode.
2.Before starting the VMM process, create a non-root user and launch the VMM with that user’s UID and GID; also add the KVM user's group ID to the VMM process's supplementary groups so the VMM process can access /dev/kvm.
3.Add the setup of the rootless directory located in the dir /run/user/<uid> directory, and modify some path variables to be functions that return the path with the rootless directory prefix when running in rootless mode.
Fixes: #11414
Signed-off-by: stevenfryto <sunzitai_1832@bupt.edu.cn>
Change the default block driver to virtio-scsi.
Since the latest qemu's commit:
https://gitlab.com/qemu-project/qemu/-/commit/
984a32f17e8dab0dc3d2328c46cb3e0c0a472a73
brings a bug for virtio-blk-pci with io_uring mode at line:
https://gitlab.com/qemu-project/qemu/-/commit/
984a32f17e8dab0dc3d2328c46cb3e0c0a472a73#
ce8eeb01f8b84f8cb8d3c35684d473fe1ee670f9_345_352
In order to avoid this issue, change the default block driver
to virtio-scsi.
Signed-off-by: Fupan Li <fupan.lfp@antgroup.com>
As OCI Spec annotation has been updated with adding or remove items,
we should use the updated annotation as the passed argument.
Signed-off-by: Alex Lyn <alex.lyn@antgroup.com>
This commit removes the InitData annotation from the OCI Spec's
annotations.
Similar to the Policy annotation, InitData is now exclusively handled
and transmitted to the guest via the sandbox's init data mechanism.
Removing this redundant and potentially large annotation simplifies the
OCI Spec and streamlines the guest initialization process.
This change aligns the handling of InitData with existing practices
within runtime-go.
Signed-off-by: Alex Lyn <alex.lyn@antgroup.com>
Correctly set dir's permissions and mode. This update ensures:
The dir_mode field of CopyFileRequest is set to DIR_MODE_PERMS
(equivalent to Go's 0o750 | os.ModeDir), which is primarily used for the
top-level directory creation permissions.
The file_mode field now directly uses metadata.mode() (equivalent to
Go's st.Mode) for the target entry.
This change aims to resolve potential permission issues or inconsistencies
during directory and file creation within the guest environment by precisely
matching the expected mode propagation of the Kata agent.
Signed-off-by: Alex Lyn <alex.lyn@antgroup.com>
The core purpose of introducing volume_manager to VolumeResource is to
centralize the management of shared file system volumes. By creating a
single VolumeManager instance within VolumeResource, all shared file
volumes are managed by one central entity. This single volume_manager
can accurately track the references of all ShareFsVolume instances to
the shared volumes, ensuring correct reference counting, proper volume
lifecycle management, and preventing issues like volumes being
overwritten.
This new design ensures that all shared volumes are managed by a central
entity, which:
(1) Guarantees correct reference counting.
(2) Manages the volume lifecycle correctly, avoiding issues like volumes
being overwritten.
Signed-off-by: Alex Lyn <alex.lyn@antgroup.com>
This commit integrates the new `VolumeManager` into the `ShareFsVolume`
lifecycle. Instead of directly copying files, `ShareFsVolume::new` now
uses the `VolumeManager` to get a guest path and determine if the volume
needs to be copied. It also updates the `cleanup` function to release
the volume's reference count, allowing the `VolumeManager` to manage its
state and clean up resources when no longer in use.
Signed-off-by: Alex Lyn <alex.lyn@antgroup.com>
This commit introduces a new `VolumeManager` to track the state of shared
volumes, including their reference count and its corresponding container
ids.
The manager's goal is to handle the lifecycle of shared filesystem volumes,
including:
(1) Volume State Tracking: Tracks the mapping from host source paths to guest
destination paths.
(2) Reference Counting: Manages reference counts for each volume, preventing
premature cleanup when multiple containers share the same source.
(3) Deterministic guest paths: Generates unique guest paths using random string
to avoid naming conflicts.
(4) Improved Management: Provides a centralized way to handle volume creation,
copying, and release, including aborting file watchers when volumes are no longer
in use.
Signed-off-by: Alex Lyn <alex.lyn@antgroup.com>
This commit refactors the `CopyFile` related code to streamline the
logic for creating guest directories and make the code structure
clearer.
Its main goal is to improve the overall maintainability and facilitate
future feature extensions.
Signed-off-by: Alex Lyn <alex.lyn@antgroup.com>
This commit is designed to perform a full sync before starting monitoring
to ensure that files which exist before monitoring starts are also synced.
Signed-off-by: Alex Lyn <alex.lyn@antgroup.com>
This commit updates the configuration for the initdata block
device to use the BlockDeviceAio::Native mode.
Signed-off-by: Alex Lyn <alex.lyn@antgroup.com>
This commit enhances control over block device AIO modes via hotplug.
Previously, hotplugging block devices was set with default AIO mode (io_uring).
Even if users reset the AIO mode in the configuration file, the changes would
not be correctly applied to individual block devices.
With this update, users can now explicitly configure the AIO mode for hot-plugging
block devices via the configuration, and those settings will be correctly applied.
Signed-off-by: Alex Lyn <alex.lyn@antgroup.com>
We need more information about block device, just relapce the original
method get_block_driver with get_block_device_info and return its
BlockDeviceInfo.
Signed-off-by: Alex Lyn <alex.lyn@antgroup.com>
- Add disable_selinux and selinux_label fields to hypervisor for SELinux support.
- Implement related SELinux support functions.
Fixes: #9866
Signed-off-by: Caspian443 <scrisis843@gmail.com>
Add the annotation of OCI bundle path to store its path.
As it'll be checked within agent policy, we need add them
to pass agent policy validations.
Signed-off-by: Alex Lyn <alex.lyn@antgroup.com>
With the help of `update_ocispec_annotations`, we'll add the contaienr
type key with "io.katacontainers.pkg.oci.container_type" and its
corresponding type "pod_sandbox" when it's pause container and
"pod_container" when it's an other containers.
Signed-off-by: Alex Lyn <alex.lyn@antgroup.com>
Add the annotation of nerdctl network namespace to let nerdctl know which namespace
to use when calling the selected CNI plugin with "nerdctl/network-namespace".
As it'll be checked within agent policy, we need add them to pass agent policy validations.
Signed-off-by: Alex Lyn <alex.lyn@antgroup.com>
Docker containers support specifying the shm size using the --shm-size
option and support sandbox-level shm volumes, so we've added support for
shm volumes. Since Kubernetes doesn't support specifying the shm size,
it typically uses a memory-based emptydir as the container's shm, and
its size can be specified.
Signed-off-by: Fupan Li <fupan.lfp@antgroup.com>
Since the rate limiter would be shared by cloud-hypervisor
and firecracker etc, thus move it from clh's config to
hypervisor config crate which would be shared by other vmm.
Signed-off-by: Fupan Li <fupan.lfp@antgroup.com>
Given that Rust-based VMMs like cloud-hypervisor, Firecracker, and
Dragonball naturally offer user-level block I/O rate limiting, I/O
throttling has been implemented to leverage this capability for these
VMMs. This PR specifically introduces support for cloud-hypervisor.
Signed-off-by: Fupan Li <fupan.lfp@antgroup.com>
Support for the share-rw=true parameter has been added. While this
parameter is essential for maintaining data consistency across multiple
QEMU instances sharing a backend disk image, its implementation also
serves to standardize parameters with the block device hotplug
functionality in kata-runtime/qemu.
Signed-off-by: Alex Lyn <alex.lyn@antgroup.com>
As prvious configure with overlayfs is incorrect, which causes the agent
policy validation failure. And it's also different with runtime-go's
configuration. In this patch, we'll correct its fstype with overlay and
align with runtime on this matter.
Signed-off-by: Alex Lyn <alex.lyn@antgroup.com>
When hot-removing a block device, the kernel must first unmount the
device and then destroy it on the VM. Therefore, a
prepare_remove_block_device procedure must be added to wait for the
kernel to unmount the device before destroying it on the VM.
Signed-off-by: Fupan Li <fupan.lfp@antgroup.com>
When hot-removing a block device, the kernel must first remove the
device and then destroy it on the VM. Therefore, a
prepare_remove_block_device procedure must be added to wait for the
kernel to unmount the device before destroying it on the VM.
Signed-off-by: Fupan Li <fupan.lfp@antgroup.com>
Since Dragonball's MMIO bus only supports legacy interrupts, while
the PCI bus supports MSIX interrupts, to improve performance for block
devices, virtio-blk devices are set to PCI bus mode by default.
We had tested the virtio-blk's performance using the fio with the
following commands:
fio -filename=./test -direct=1 -iodepth 32 -thread -rw=randrw
-rwmixread=50 -ioengine=libaio -bs=4k -size=10G -numjobs=4
-group_reporting -name=mytest
When used the legacy interrupt, the io test is as below:
read : io=20485MB, bw=195162KB/s, iops=48790, runt=107485msec
write: io=20475MB, bw=195061KB/s, iops=48765, runt=107485msec
Once switched to msix innterrupt, the io test is as below:
read : io=20485MB, bw=260862KB/s, iops=65215, runt= 80414msec
write: io=20475MB, bw=260727KB/s, iops=65181, runt= 80414msec
We can get 34% performance improvement.
Signed-off-by: Fupan Li <fupan.lfp@antgroup.com>
The previous document about the default of create_container_timeout
is 30,000 millseconds which not keep alignment with runtime-go.
In this commit, we'll change it as 30 seconds.
Signed-off-by: Alex Lyn <alex.lyn@antgroup.com>
In certain scenarios, particularly under CoCo/Agent Policy enforcement,
the default initial value of `Linux.Resources.Devices` is considered
non-compliant, leading to container creation failures. To address this
issue and ensure consistency with the behavior in `runtime-go`, this
commit removes the default value of `Linux.Resources.Devices` from the
OCI Spec.
This cleanup ensures that the OCI Spec aligns with runtime expectations
and prevents policy violations during container creation.
Signed-off-by: Alex Lyn <alex.lyn@antgroup.com>
Only the StartContainer hook needs to be reserved for execution in the
guest, but we also make sure that the setting happens only when the OCI
Hooks does exist, otherwise we do nothing.
Signed-off-by: Alex Lyn <alex.lyn@antgroup.com>
Mount validation for sealed secret requires the base path to start with
`/run/kata-containers/shared/containers`. Previously, it used
`/run/kata-containers/sandbox/passthrough`, which caused test
failures where volume mounts are used.
This commit renames the path to satisfy the validation check.
Signed-off-by: Hyounggyu Choi <Hyounggyu.Choi@ibm.com>
- Set guest Storage.options for block rootfs to empty (do not propagate host mount options).
- Align behavior with Go runtime: only add xfs nouuid when needed.
Signed-off-by: Caspian443 <scrisis843@gmail.com>
In #11693 the cc_init_data annotation was changes to be hypervisor
scoped, so each hypervisor needs to explicitly allow it in order to
use it now, so add this to both the go and rust runtime's remote
configurations
Signed-off-by: stevenhorsman <steven@uk.ibm.com>
Currently, we change vm_rootfs_driver as the initdata device driver
with block_device_driver.
Fixes#11697
Signed-off-by: Alex Lyn <alex.lyn@antgroup.com>
we also need support initdat within nonprotection even though the
platform is detected as NonProtection or usually is called nontee
host. Within these cases, there's no need to validate the item of
`confidential_guest=true`, we believe the result of the method
`available_guest_protection()?`.
Fixes#11697
Signed-off-by: Alex Lyn <alex.lyn@antgroup.com>
