mirror of
https://github.com/kata-containers/kata-containers.git
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annotations: Add annotations to support additional configurations
Add annotation to support all hypervisor configurations. Signed-off-by: Archana Shinde <archana.m.shinde@intel.com>
This commit is contained in:
Archana Shinde
parent
845bf73726
commit
afb91c2e02
@ -9,8 +9,23 @@ const (
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kataAnnotationsPrefix = "io.kata-containers."
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kataConfAnnotationsPrefix = kataAnnotationsPrefix + "config."
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kataAnnotHypervisorPrefix = kataConfAnnotationsPrefix + "hypervisor."
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kataAnnotAgentPrefix = kataConfAnnotationsPrefix + "agent."
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kataAnnotRuntimePrefix = kataConfAnnotationsPrefix + "runtime." // nolint: unused
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//
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// OCI
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//
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// BundlePathKey is the annotation key to fetch the OCI configuration file path.
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BundlePathKey = kataAnnotationsPrefix + "pkg.oci.bundle_path"
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// ContainerTypeKey is the annotation key to fetch container type.
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ContainerTypeKey = kataAnnotationsPrefix + "pkg.oci.container_type"
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)
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// Annotations related to Hypervisor configuration
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const (
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//
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// Assets
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//
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// KernelPath is a sandbox annotation for passing a per container path pointing at the kernel needed to boot the container VM.
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KernelPath = kataAnnotHypervisorPrefix + "kernel"
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@ -51,11 +66,122 @@ const (
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// AssetHashType is the hash type used for assets verification
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AssetHashType = kataAnnotationsPrefix + "asset_hash_type"
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// BundlePathKey is the annotation key to fetch the OCI configuration file path.
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BundlePathKey = kataAnnotationsPrefix + "pkg.oci.bundle_path"
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//
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// Generic annotations
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//
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// ContainerTypeKey is the annotation key to fetch container type.
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ContainerTypeKey = kataAnnotationsPrefix + "pkg.oci.container_type"
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// KernelParams is a sandbox annotation for passing additional guest kernel parameters.
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KernelParams = kataAnnotHypervisorPrefix + "kernel_params"
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// MachineType is a sandbox annotation to specify the type of machine being emulated by the hypervisor.
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MachineType = kataAnnotHypervisorPrefix + "machine_type"
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// MachineAccelerators is a sandbox annotation to specify machine specific accelerators for the hypervisor.
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MachineAccelerators = kataAnnotHypervisorPrefix + "machine_accelerators"
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// DisableVhostNet is a sandbox annotation to specify if vhost-net is not available on the host.
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DisableVhostNet = kataAnnotHypervisorPrefix + "disable_vhost_net"
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// GuestHookPath is a sandbox annotation to specify the path within the VM that will be used for 'drop-in' hooks.
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GuestHookPath = kataAnnotHypervisorPrefix + "guest_hook_path"
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// UseVSock is a sandbox annotation to specify use of vsock for agent communication.
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UseVSock = kataAnnotHypervisorPrefix + "use_vsock"
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// HotplugVFIOOnRootBus is a sandbox annotation used to indicate if devices need to be hotplugged on the
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// root bus instead of a bridge.
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HotplugVFIOOnRootBus = kataAnnotHypervisorPrefix + "hotplug_vfio_on_root_bus"
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// EntropySource is a sandbox annotation to specify the path to a host source of
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// entropy (/dev/random, /dev/urandom or real hardware RNG device)
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EntropySource = kataAnnotHypervisorPrefix + "entropy_source"
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//
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// CPU Annotations
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//
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// DefaultVCPUs is a sandbox annotation for passing the default vcpus assigned for a VM by the hypervisor.
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DefaultVCPUs = kataAnnotHypervisorPrefix + "default_vcpus"
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// DefaultVCPUs is a sandbox annotation that specifies the maximum number of vCPUs allocated for the VM by the hypervisor.
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DefaultMaxVCPUs = kataAnnotHypervisorPrefix + "default_max_vcpus"
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//
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// Memory related annotations
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//
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// DefaultMemory is a sandbox annotation for the memory assigned for a VM by the hypervisor.
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DefaultMemory = kataAnnotHypervisorPrefix + "default_memory"
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// MemSlots is a sandbox annotation to specify the memory slots assigned to the VM by the hypervisor.
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MemSlots = kataAnnotHypervisorPrefix + "memory_slots"
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// MemOffset is a sandbox annotation that specifies the memory space used for nvdimm device by the hypervisor.
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MemOffset = kataAnnotHypervisorPrefix + "memory_offset"
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// MemPrealloc is a sandbox annotation that specifies the memory space used for nvdimm device by the hypervisor.
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MemPrealloc = kataAnnotHypervisorPrefix + "enable_mem_prealloc"
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// EnableSwap is a sandbox annotation to enable swap of vm memory.
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// The behaviour is undefined if mem_prealloc is also set to true
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EnableSwap = kataAnnotHypervisorPrefix + "enable_swap"
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// HugePages is a sandbox annotation to specify if the memory should be pre-allocated from huge pages
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HugePages = kataAnnotHypervisorPrefix + "enable_hugepages"
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// FileBackedMemRootDir is a sandbox annotation to soecify file based memory backend root directory
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FileBackedMemRootDir = kataAnnotHypervisorPrefix + "file_mem_backend"
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//
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// Shared File System related annotations
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//
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// Msize9p is a sandbox annotation to specify as the msize for 9p shares
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Msize9p = kataAnnotHypervisorPrefix + "msize_9p"
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// SharedFs is a sandbox annotation to specify the shared file system type, either virtio-9p or virtio-fs.
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SharedFS = kataAnnotHypervisorPrefix + "shared_fs"
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// VirtioFSDaemon is a sandbox annotations to specify virtio-fs vhost-user daemon path
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VirtioFSDaemon = kataAnnotHypervisorPrefix + "virtio_fs_daemon"
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// VirtioFSCache is a sandbox annotation to specify the cache mode for fs version cache or "none"
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VirtioFSCache = kataAnnotHypervisorPrefix + "virtio_fs_cache"
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// VirtioFSCacheSize is a sandbox annotation to specify the DAX cache size in MiB
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VirtioFSCacheSize = kataAnnotHypervisorPrefix + "virtio_fs_cache_size"
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// VirtioFSExtraArgs is a sandbox annotation to pass options to virtiofsd daemon
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VirtioFSExtraArgs = kataAnnotHypervisorPrefix + "virtio_fs_extra_args"
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//
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// Block Device related annotations
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//
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// BlockDeviceDriver specifies the driver to be used for block device either VirtioSCSI or VirtioBlock
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BlockDeviceDriver = kataAnnotHypervisorPrefix + "block_device_driver"
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// DisableBlockDeviceUse is a sandbox annotation that disallows a block device from being used.
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DisableBlockDeviceUse = kataAnnotHypervisorPrefix + "disable_block_device_use"
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// EnableIOThreads is a sandbox annotation to enable IO to be processed in a separate thread.
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// Supported currently for virtio-scsi driver.
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EnableIOThreads = kataAnnotHypervisorPrefix + "enable_iothreads"
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// BlockDeviceCacheSet is a sandbox annotation that specifies cache-related options will be set to block devices or not.
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BlockDeviceCacheSet = kataAnnotHypervisorPrefix + "block_device_cache_set"
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// BlockDeviceCacheDirect is a sandbox annotation that specifies cache-related options for block devices.
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// Denotes whether use of O_DIRECT (bypass the host page cache) is enabled.
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BlockDeviceCacheDirect = kataAnnotHypervisorPrefix + "block_device_cache_direct"
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// BlockDeviceCacheNoflush is a sandbox annotation that specifies cache-related options for block devices.
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// Denotes whether flush requests for the device are ignored.
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BlockDeviceCacheNoflush = kataAnnotHypervisorPrefix + "block_device_cache_noflush"
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)
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const (
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kataAnnotAgentPrefix = kataConfAnnotationsPrefix + "agent."
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// KernelModules is the annotation key for passing the list of kernel
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// modules and their parameters that will be loaded in the guest kernel.
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@ -69,18 +195,6 @@ const (
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// The first word is considered as the module name and the rest as its parameters.
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//
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KernelModules = kataAnnotAgentPrefix + "kernel_modules"
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// DefaultVCPUs is a sandbox annotation for passing the default vcpus assigned for a VM by the hypervisor.
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DefaultVCPUs = kataAnnotHypervisorPrefix + "default_vcpus"
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// DefaultVCPUs is a sandbox annotation that specifies the maximum number of vCPUs allocated for the VM by the hypervisor.
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DefaultMaxVCPUs = kataAnnotHypervisorPrefix + "default_max_vcpus"
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// DefaultMemory is a sandbox annotation for the memory assigned for a VM by the hypervisor.
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DefaultMemory = kataAnnotHypervisorPrefix + "default_memory"
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// KernelParams is a sandbox annotation for passing additional guest kernel parameters.
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KernelParams = kataAnnotHypervisorPrefix + "kernel_params"
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)
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const (
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@ -358,19 +358,166 @@ func addAssetAnnotations(ocispec specs.Spec, config *vc.SandboxConfig) {
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}
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func addHypervisorConfigOverrides(ocispec specs.Spec, config *vc.SandboxConfig) error {
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if err := addHypervisorCPUOverrides(ocispec, config); err != nil {
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return err
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}
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if err := addHypervisorMemoryOverrides(ocispec, config); err != nil {
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return err
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}
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if err := addHypervisorBlockOverrides(ocispec, config); err != nil {
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return err
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}
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if err := addHypervisporVirtioFsOverrides(ocispec, config); err != nil {
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return err
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}
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if value, ok := ocispec.Annotations[vcAnnotations.KernelParams]; ok {
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if value != "" {
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params := vc.DeserializeParams(strings.Fields(value))
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for _, param := range params {
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if err := config.HypervisorConfig.AddKernelParam(param); err != nil {
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return fmt.Errorf("Error adding kernel parameters in annotation kernel_params : %v", err)
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}
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}
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}
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}
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if value, ok := ocispec.Annotations[vcAnnotations.MachineType]; ok {
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if value != "" {
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config.HypervisorConfig.HypervisorMachineType = value
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}
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}
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if value, ok := ocispec.Annotations[vcAnnotations.MachineAccelerators]; ok {
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if value != "" {
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config.HypervisorConfig.MachineAccelerators = value
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}
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}
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if value, ok := ocispec.Annotations[vcAnnotations.DisableVhostNet]; ok {
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disableVhostNet, err := strconv.ParseBool(value)
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if err != nil {
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return fmt.Errorf("Error parsing annotation for disable_vhost_net: Please specify boolean value 'true|false'")
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}
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config.HypervisorConfig.DisableVhostNet = disableVhostNet
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}
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if value, ok := ocispec.Annotations[vcAnnotations.GuestHookPath]; ok {
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if value != "" {
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config.HypervisorConfig.GuestHookPath = value
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}
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}
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if value, ok := ocispec.Annotations[vcAnnotations.UseVSock]; ok {
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useVsock, err := strconv.ParseBool(value)
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if err != nil {
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return fmt.Errorf("Error parsing annotation for use_vsock: Please specify boolean value 'true|false'")
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}
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config.HypervisorConfig.UseVSock = useVsock
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}
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if value, ok := ocispec.Annotations[vcAnnotations.HotplugVFIOOnRootBus]; ok {
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hotplugVFIOOnRootBus, err := strconv.ParseBool(value)
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if err != nil {
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return fmt.Errorf("Error parsing annotation for hotplug_vfio_on_root_bus: Please specify boolean value 'true|false'")
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}
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config.HypervisorConfig.HotplugVFIOOnRootBus = hotplugVFIOOnRootBus
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}
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if value, ok := ocispec.Annotations[vcAnnotations.EntropySource]; ok {
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if value != "" {
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config.HypervisorConfig.EntropySource = value
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}
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}
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return nil
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}
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func addHypervisorMemoryOverrides(ocispec specs.Spec, sbConfig *vc.SandboxConfig) error {
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if value, ok := ocispec.Annotations[vcAnnotations.DefaultMemory]; ok {
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memorySz, err := strconv.ParseUint(value, 10, 32)
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if err != nil || memorySz < 8 {
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return fmt.Errorf("Error encountered parsing annotation for default_memory: %v, please specify positive numeric value greater than 8", err)
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}
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sbConfig.HypervisorConfig.MemorySize = uint32(memorySz)
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}
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if value, ok := ocispec.Annotations[vcAnnotations.MemSlots]; ok {
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mslots, err := strconv.ParseUint(value, 10, 32)
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if err != nil {
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return fmt.Errorf("Error parsing annotation for memory_slots: %v, please specify positive numeric value", err)
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}
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if mslots > 0 {
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sbConfig.HypervisorConfig.MemSlots = uint32(mslots)
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}
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}
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if value, ok := ocispec.Annotations[vcAnnotations.MemOffset]; ok {
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moffset, err := strconv.ParseUint(value, 10, 32)
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if err != nil {
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return fmt.Errorf("Error parsing annotation for memory_offset: %v, please specify positive numeric value", err)
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}
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if moffset > 0 {
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sbConfig.HypervisorConfig.MemOffset = uint32(moffset)
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}
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}
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if value, ok := ocispec.Annotations[vcAnnotations.MemPrealloc]; ok {
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memPrealloc, err := strconv.ParseBool(value)
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if err != nil {
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return fmt.Errorf("Error parsing annotation for enable_mem_prealloc: Please specify boolean value 'true|false'")
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}
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sbConfig.HypervisorConfig.MemPrealloc = memPrealloc
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}
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if value, ok := ocispec.Annotations[vcAnnotations.EnableSwap]; ok {
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enableSwap, err := strconv.ParseBool(value)
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if err != nil {
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return fmt.Errorf("Error parsing annotation for enable_swap: Please specify boolean value 'true|false'")
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}
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sbConfig.HypervisorConfig.Mlock = !enableSwap
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}
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if value, ok := ocispec.Annotations[vcAnnotations.FileBackedMemRootDir]; ok {
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sbConfig.HypervisorConfig.FileBackedMemRootDir = value
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}
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if value, ok := ocispec.Annotations[vcAnnotations.HugePages]; ok {
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hugePages, err := strconv.ParseBool(value)
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if err != nil {
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return fmt.Errorf("Error parsing annotation for enable_hugepages: Please specify boolean value 'true|false'")
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}
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sbConfig.HypervisorConfig.HugePages = hugePages
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}
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return nil
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}
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func addHypervisorCPUOverrides(ocispec specs.Spec, sbConfig *vc.SandboxConfig) error {
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if value, ok := ocispec.Annotations[vcAnnotations.DefaultVCPUs]; ok {
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vcpus, err := strconv.ParseUint(value, 10, 32)
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if err != nil {
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return fmt.Errorf("Error encountered parsing annotation for default_vcpus: %v, please specify numeric value", err)
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return fmt.Errorf("Error encountered parsing annotation default_vcpus: %v, please specify numeric value", err)
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}
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numCPUs := goruntime.NumCPU()
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// Assign the override only if value is valid, else fallback to what is provided by the config
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if uint32(vcpus) < uint32(numCPUs) {
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config.HypervisorConfig.NumVCPUs = uint32(vcpus)
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if uint32(vcpus) > uint32(numCPUs) {
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return fmt.Errorf("Number of cpus %d specified in annotation default_vcpus is greater than the number of CPUs %d on the system", vcpus, numCPUs)
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}
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sbConfig.HypervisorConfig.NumVCPUs = uint32(vcpus)
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}
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if value, ok := ocispec.Annotations[vcAnnotations.DefaultMaxVCPUs]; ok {
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@ -381,24 +528,130 @@ func addHypervisorConfigOverrides(ocispec specs.Spec, config *vc.SandboxConfig)
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numCPUs := goruntime.NumCPU()
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max := uint32(maxVCPUs)
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if max < uint32(numCPUs) && max < vc.MaxQemuVCPUs() {
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config.HypervisorConfig.DefaultMaxVCPUs = max
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if max > uint32(numCPUs) {
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return fmt.Errorf("Number of cpus %d in annotation default_maxvcpus is greater than the number of CPUs %d on the system", max, numCPUs)
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}
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if sbConfig.HypervisorType == vc.QemuHypervisor && max > vc.MaxQemuVCPUs() {
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return fmt.Errorf("Number of cpus %d in annotation default_maxvcpus is greater than max no of CPUs %d supported for qemu", max, vc.MaxQemuVCPUs())
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}
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sbConfig.HypervisorConfig.DefaultMaxVCPUs = max
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}
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return nil
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}
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func addHypervisorBlockOverrides(ocispec specs.Spec, sbConfig *vc.SandboxConfig) error {
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if value, ok := ocispec.Annotations[vcAnnotations.BlockDeviceDriver]; ok {
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supportedBlockDrivers := []string{config.VirtioSCSI, config.VirtioBlock, config.VirtioMmio, config.Nvdimm, config.VirtioBlockCCW}
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valid := false
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for _, b := range supportedBlockDrivers {
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if b == value {
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sbConfig.HypervisorConfig.BlockDeviceDriver = value
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valid = true
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}
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}
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if !valid {
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return fmt.Errorf("Invalid hypervisor block storage driver %v specified in annotation (supported drivers: %v)", value, supportedBlockDrivers)
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}
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}
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if value, ok := ocispec.Annotations[vcAnnotations.DefaultMemory]; ok {
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memorySz, err := strconv.ParseUint(value, 10, 32)
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if err != nil || memorySz < 8 {
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return fmt.Errorf("Error encountered parsing annotation for default_memory: %v, please specify positive numeric value greater than 8", err)
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if value, ok := ocispec.Annotations[vcAnnotations.DisableBlockDeviceUse]; ok {
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disableBlockDeviceUse, err := strconv.ParseBool(value)
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if err != nil {
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return fmt.Errorf("Error parsing annotation for disable_block_device_use: Please specify boolean value 'true|false'")
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}
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config.HypervisorConfig.MemorySize = uint32(memorySz)
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sbConfig.HypervisorConfig.DisableBlockDeviceUse = disableBlockDeviceUse
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}
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if value, ok := ocispec.Annotations[vcAnnotations.KernelParams]; ok {
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if value != "" {
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config.HypervisorConfig.KernelParams = vc.DeserializeParams(strings.Fields(value))
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if value, ok := ocispec.Annotations[vcAnnotations.EnableIOThreads]; ok {
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enableIOThreads, err := strconv.ParseBool(value)
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if err != nil {
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return fmt.Errorf("Error parsing annotation for enable_iothreads: Please specify boolean value 'true|false'")
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}
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sbConfig.HypervisorConfig.EnableIOThreads = enableIOThreads
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}
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if value, ok := ocispec.Annotations[vcAnnotations.BlockDeviceCacheSet]; ok {
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blockDeviceCacheSet, err := strconv.ParseBool(value)
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if err != nil {
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return fmt.Errorf("Error parsing annotation for block_device_cache_set: Please specify boolean value 'true|false'")
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}
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sbConfig.HypervisorConfig.BlockDeviceCacheSet = blockDeviceCacheSet
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}
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if value, ok := ocispec.Annotations[vcAnnotations.BlockDeviceCacheDirect]; ok {
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blockDeviceCacheDirect, err := strconv.ParseBool(value)
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if err != nil {
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return fmt.Errorf("Error parsing annotation for block_device_cache_direct: Please specify boolean value 'true|false'")
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}
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sbConfig.HypervisorConfig.BlockDeviceCacheDirect = blockDeviceCacheDirect
|
||||
}
|
||||
|
||||
if value, ok := ocispec.Annotations[vcAnnotations.BlockDeviceCacheNoflush]; ok {
|
||||
blockDeviceCacheNoflush, err := strconv.ParseBool(value)
|
||||
if err != nil {
|
||||
return fmt.Errorf("Error parsing annotation for block_device_cache_noflush: Please specify boolean value 'true|false'")
|
||||
}
|
||||
|
||||
sbConfig.HypervisorConfig.BlockDeviceCacheNoflush = blockDeviceCacheNoflush
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func addHypervisporVirtioFsOverrides(ocispec specs.Spec, sbConfig *vc.SandboxConfig) error {
|
||||
if value, ok := ocispec.Annotations[vcAnnotations.SharedFS]; ok {
|
||||
supportedSharedFS := []string{config.Virtio9P, config.VirtioFS}
|
||||
valid := false
|
||||
for _, fs := range supportedSharedFS {
|
||||
if fs == value {
|
||||
sbConfig.HypervisorConfig.SharedFS = value
|
||||
valid = true
|
||||
}
|
||||
}
|
||||
|
||||
if !valid {
|
||||
return fmt.Errorf("Invalid hypervisor shared file system %v specified for annotation shared_fs, (supported file systems: %v)", value, supportedSharedFS)
|
||||
}
|
||||
}
|
||||
|
||||
if value, ok := ocispec.Annotations[vcAnnotations.VirtioFSDaemon]; ok {
|
||||
sbConfig.HypervisorConfig.VirtioFSDaemon = value
|
||||
}
|
||||
|
||||
if sbConfig.HypervisorConfig.SharedFS == config.VirtioFS && sbConfig.HypervisorConfig.VirtioFSDaemon == "" {
|
||||
return fmt.Errorf("cannot enable virtio-fs without daemon path")
|
||||
}
|
||||
|
||||
if value, ok := ocispec.Annotations[vcAnnotations.VirtioFSCache]; ok {
|
||||
sbConfig.HypervisorConfig.VirtioFSCache = value
|
||||
}
|
||||
|
||||
if value, ok := ocispec.Annotations[vcAnnotations.VirtioFSCacheSize]; ok {
|
||||
cacheSize, err := strconv.ParseUint(value, 10, 32)
|
||||
if err != nil {
|
||||
return fmt.Errorf("Error parsing annotation for virtio_fs_cache_size: %v, please specify positive numeric value", err)
|
||||
}
|
||||
|
||||
sbConfig.HypervisorConfig.VirtioFSCacheSize = uint32(cacheSize)
|
||||
}
|
||||
|
||||
if value, ok := ocispec.Annotations[vcAnnotations.Msize9p]; ok {
|
||||
msize9p, err := strconv.ParseUint(value, 10, 32)
|
||||
if err != nil || msize9p == 0 {
|
||||
return fmt.Errorf("Error parsing annotation for msize_9p, please specify positive numeric value")
|
||||
}
|
||||
|
||||
sbConfig.HypervisorConfig.Msize9p = uint32(msize9p)
|
||||
}
|
||||
|
||||
return nil
|
||||
|
||||
Loading…
Reference in New Issue
Block a user