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/cloud-hypervisor/docs/
H A Dlive_migration.md1 # Live Migration
3 This document gives examples of how to use the live migration support
6 1. local migration - migrating a VM from one Cloud Hypervisor instance to another on the same machi…
7 1. remote migration - migrating a VM between two machines;
12 ## Local Migration (Suitable for Live Upgrade of VMM)
17 $ target/release/cloud-hypervisor
18 --kernel ~/workloads/vmlinux \
19 --disk path=~/workloads/focal.raw \
20 --cpus boot=1 --memory size=1G,shared=on \
21 --cmdline "root=/dev/vda1 console=ttyS0" \
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H A Dapi.md1 - [Cloud Hypervisor API](#cloud-hypervisor-api)
2 - [External API](#external-api)
3 - [REST API](#rest-api)
4 - [REST API Location and availability](#rest-api-location-and-availability)
5 - [REST API Endpoints](#rest-api-endpoints)
6 - [Virtual Machine Manager (VMM) Actions](#virtual-machine-manager-vmm-actions)
7 - [Virtual Machine (VM) Actions](#virtual-machine-vm-actions)
8 - [REST API Examples](#rest-api-examples)
9 - [Create a Virtual Machine](#create-a-virtual-machine)
10 - [Boot a Virtual Machine](#boot-a-virtual-machine)
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/cloud-hypervisor/vm-migration/src/
H A Dlib.rs3 // SPDX-License-Identifier: Apache-2.0 AND BSD-3-Clause
28 #[error("Failed to send migratable component snapshot")]
37 #[error("Failed to start migration for migratable component")]
40 #[error("Failed to stop migration for migratable component")]
46 #[error("Failed to start migration for migratable component")]
49 #[error("Failed to complete migration for migratable component")]
52 #[error("Failed to release a disk lock before the migration")]
59 fn pause(&mut self) -> std::result::Result<(), MigratableError> { in pause()
64 fn resume(&mut self) -> std::result::Result<(), MigratableError> { in resume()
71 /// Migratable component can split their migration snapshot into
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H A Dprotocol.rs3 // SPDX-License-Identifier: Apache-2.0
13 // Migration protocol
16 // 2: Source -> Dest : send "start command"
17 // 3: Dest -> Source : sends "ok response" when read to accept state data
18 // 4: Source -> Dest : sends "config command" followed by config data, length
20 // 5: Dest -> Source : sends "ok response" when ready to accept memory data
21 // 6: Source -> Dest : send "memory command" followed by table of u64 pairs (GPA, size)
24 // 7: Dest -> Source : sends "ok response" when ready to accept more memory data
25 // 8..(n-4): Repeat steps 6 and 7 until source has no more memory to send
26 // (n-3): Source -> Dest : sends "state command" followed by state data, length
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/cloud-hypervisor/src/bin/
H A Dch-remote.rs3 // SPDX-License-Identifier: Apache-2.0
79 fn vmm_ping(&self) -> zbus::Result<String>; in vmm_ping()
80 fn vmm_shutdown(&self) -> zbus::Result<()>; in vmm_shutdown()
81 fn vm_add_device(&self, device_config: &str) -> zbus::Result<Optional<String>>; in vm_add_device()
82 fn vm_add_disk(&self, disk_config: &str) -> zbus::Result<Optional<String>>; in vm_add_disk()
83 fn vm_add_fs(&self, fs_config: &str) -> zbus::Result<Optional<String>>; in vm_add_fs()
84 fn vm_add_net(&self, net_config: &str) -> zbus::Result<Optional<String>>; in vm_add_net()
85 fn vm_add_pmem(&self, pmem_config: &str) -> zbus::Result<Optional<String>>; in vm_add_pmem()
86 fn vm_add_user_device(&self, vm_add_user_device: &str) -> zbus::Result<Optional<String>>; in vm_add_user_device()
87 fn vm_add_vdpa(&self, vdpa_config: &str) -> zbus::Result<Optional<String>>; in vm_add_vdpa()
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/cloud-hypervisor/vmm/src/api/
H A Dmod.rs4 // SPDX-License-Identifier: Apache-2.0
9 //! This API is a synchronous, [mpsc](https://doc.rust-lang.org/std/sync/mpsc/)
11 //! Cloud Hypervisor threads. The IPC follows a command-response protocol, i.e.
25 //! able to send the response back.
64 /// API request send error
65 #[error("API request send error")]
184 /// Error starting migration receiver
185 #[error("Error starting migration receiver")]
188 /// Error starting migration sender
189 #[error("Error starting migration sender")]
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/cloud-hypervisor/vmm/src/
H A Dlib.rs3 // SPDX-License-Identifier: Apache-2.0
59 use crate::migration::get_vm_snapshot;
60 use crate::migration::{recv_vm_config, recv_vm_state};
86 pub mod migration; module
104 /// API response send error
132 /// Cannot create D-Bus thread
134 #[error("Error spawning D-Bus thread")]
137 /// Cannot start D-Bus session
139 #[error("Error starting D-Bus session")]
142 /// Cannot create `event-monitor` thread
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H A Dvm.rs6 // Use of this source code is governed by a BSD-style license that can be
7 // found in the LICENSE-BSD-3-Clause file.
11 // SPDX-License-Identifier: Apache-2.0 AND BSD-3-Clause
90 use crate::migration::get_vm_snapshot;
92 use crate::migration::url_to_file;
93 use crate::migration::{url_to_path, SNAPSHOT_CONFIG_FILE, SNAPSHOT_STATE_FILE};
157 ThreadCleanup(std::boxed::Box<dyn std::any::Any + std::marker::Send>),
210 #[error("Cannot send VM snapshot")]
219 #[error("Too many virtio-vsock devices")]
259 #[error("Error enabling SEV-SNP VM")]
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H A Ddevice_manager.rs4 // Use of this source code is governed by a BSD-style license that can be
5 // found in the LICENSE-BSD-3-Clause file.
9 // SPDX-License-Identifier: Apache-2.0 AND BSD-3-Clause
148 const VIRTIO_PCI_DEVICE_NAME_PREFIX: &str = "_virtio-pci";
161 /// Cannot create vhost-user-net device
162 #[error("Cannot create vhost-user-net device")]
165 /// Cannot create virtio-blk device
166 #[error("Cannot create virtio-blk device")]
169 /// Cannot create virtio-net device
170 #[error("Cannot create virtio-net device")]
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H A Dmemory_manager.rs3 // SPDX-License-Identifier: Apache-2.0
56 use crate::migration::url_to_path;
66 const SNAPSHOT_FILENAME: &str = "memory-ranges";
104 pub fn region(&self) -> &Arc<GuestRegionMmap> { in region()
110 pub fn hotplugged_size(&self) -> u64 { in hotplugged_size()
113 pub fn hugepages(&self) -> bool { in hugepages()
116 pub fn blocks_state(&self) -> &Arc<Mutex<BlocksState>> { in blocks_state()
119 pub fn plugged_ranges(&self) -> MemoryRangeTable { in plugged_ranges()
134 pub fn regions(&self) -> &Vec<Arc<GuestRegionMmap>> { in regions()
137 pub fn virtio_mem_zone(&self) -> &Option<VirtioMemZone> { in virtio_mem_zone()
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H A Dcpu.rs6 // Use of this source code is governed by a BSD-style license that can be
7 // found in the LICENSE-BSD-3-Clause file.
11 // SPDX-License-Identifier: Apache-2.0 AND BSD-3-Clause
94 /// Extract the specified bits of a 64-bit integer.
101 ($value >> $offset) & (!0u64 >> (64 - $length))
108 $value & (!0u64 >> (64 - $length))
155 ThreadCleanup(std::boxed::Box<dyn std::any::Any + std::marker::Send>),
337 /// A wrapper around creating and using a kvm-based VCPU.
354 /// * `id` - Represents the CPU number between [0, max vcpus).
355 /// * `vm` - The virtual machine this vcpu will get attached to.
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/cloud-hypervisor/scripts/
H A Ddev_cli.sh5 # SPDX-License-Identifier: Apache-2.0
9 CTR_IMAGE_TAG="ghcr.io/cloud-hypervisor/cloud-hypervisor"
11 # Needs to match explicit version in docker-image.yaml workflow
12 CTR_IMAGE_VERSION="20250412-0"
23 CLH_CTR_BUILD_DIR="/tmp/cloud-hypervisor/ctr-build"
27 CTR_CLH_ROOT_DIR="/cloud-hypervisor"
50 # Send a decorated message to stdout, followed by a new line
53 [ -t 1 ] && [ -n "$TERM" ] &&
58 # Send a decorated message to stdout, without a trailing new line
61 [ -t 1 ] && [ -n "$TERM" ] &&
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/cloud-hypervisor/vmm/src/api/openapi/
H A Dcloud-hypervisor.yaml4 description: Local HTTP based API for managing and inspecting a cloud-hypervisor virtual machine.
7 url: http://www.apache.org/licenses/LICENSE-2.0.html
11 - url: http://localhost/api/v1
27 summary: Shuts the cloud-hypervisor VMM.
35 summary: Returns general information about the cloud-hypervisor Virtual Machine (VM) instance.
57 …summary: Create the cloud-hypervisor Virtual Machine (VM) instance. The instance is not booted, on…
72 summary: Delete the cloud-hypervisor Virtual Machine (VM) instance.
136 /vm.power-button:
139 operationId: power-buttonVM
166 /vm.resize-zone:
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/cloud-hypervisor/vmm/src/api/http/
H A Dmod.rs3 // SPDX-License-Identifier: Apache-2.0
75 /// The error message contained in the response is supposed to be user-facing,
78 pub fn error_response(error: HttpError, status: StatusCode) -> Response { in error_response()
85 // See <https://github.com/rust-lang/rust/issues/141673> in error_response()
103 /// After parsing the request, the handler could decide to send an
112 ) -> Response { in handle_request()
149 ) -> std::result::Result<Option<Body>, HttpError> { in put_handler()
158 ) -> std::result::Result<Option<Body>, HttpError> { in get_handler()
166 pub routes: BTreeMap<String, Box<dyn EndpointHandler + Sync + Send>>,
175 /// HTTP_ROUTES contain all the cloud-hypervisor HTTP routes.
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/cloud-hypervisor/tests/
H A Dintegration.rs3 // SPDX-License-Identifier: Apache-2.0
7 // hence have known dead-code. This annotation silences dead-code
36 pub const FOCAL_IMAGE_NAME: &str = "focal-server-cloudimg-amd64-custom-20210609-0.raw";
38 "jammy-server-cloudimg-amd64-custom-vfio-20241012-0.raw";
39 pub const FOCAL_IMAGE_NAME_QCOW2: &str = "focal-server-cloudimg-amd64-custom-20210609-0.qcow2";
41 "focal-server-cloudimg-amd64-custom-20210609-0-backing.qcow2";
42 pub const FOCAL_IMAGE_NAME_VHD: &str = "focal-server-cloudimg-amd64-custom-20210609-0.vhd";
43 pub const FOCAL_IMAGE_NAME_VHDX: &str = "focal-server-cloudimg-amd64-custom-20210609-0.vhdx";
44 pub const JAMMY_IMAGE_NAME: &str = "jammy-server-cloudimg-amd64-custom-20241017-0.raw";
45 pub const WINDOWS_IMAGE_NAME: &str = "windows-server-2022-amd64-2.raw";
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/cloud-hypervisor/virtio-devices/src/
H A Dvdpa.rs3 // SPDX-License-Identifier: Apache-2.0
35 #[error("Failed to create vhost-vdpa")]
57 #[error("Invalid IOVA range: {0}-{1}")]
122 ) -> Result<Self> { in new()
199 fn enable_vrings(&mut self, enable: bool) -> Result<()> { in enable_vrings()
221 ) -> Result<()> { in activate_vdpa()
318 fn reset_vdpa(&mut self) -> Result<()> { in reset_vdpa()
335 ) -> Result<()> { in dma_map()
336 let iova_last = iova + size - 1; in dma_map()
349 fn dma_unmap(&self, iova: u64, size: u64) -> Result<()> { in dma_unmap()
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/cloud-hypervisor/
H A Drelease-notes.md1 - [v46.0](#v460)
2 - [File-level Locking Support with `--disk`](#file-level-locking-support-with---disk)
3 - [Improved Error Reporting with VM Resizing](#improved-error-reporting-with-vm-resizing)
4 - [IPv6 Address Support with `--net`](#ipv6-address-support-with---net)
5 …- [Experimental AArch64 Support with the MSHV Hypervisor](#experimental-aarch64-support-with-the-m…
6 - [Deprecated SGX Support](#deprecated-sgx-support)
7 - [Notable Bug Fixes](#notable-bug-fixes)
8 - [Contributors](#contributors)
9 - [v45.0](#v450)
10 - [Experimental `riscv64` Architecture Support](#experimental-riscv64-architecture-support)
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/cloud-hypervisor/pci/src/
H A Dvfio_user.rs3 // SPDX-License-Identifier: Apache-2.0
63 fn get_register_value(&self) -> u8 { in get_register_value()
79 ) -> Result<Self, VfioUserPciDeviceError> { in new()
113 pub fn map_mmio_regions(&mut self) -> Result<(), VfioUserPciDeviceError> { in map_mmio_regions()
250 ) -> Result<(), VfioUserPciDeviceError> { in dma_map()
266 ) -> Result<(), VfioUserPciDeviceError> { in dma_unmap()
280 fn write(&mut self, base: u64, offset: u64, data: &[u8]) -> Option<Arc<Barrier>> { in write()
298 Migration, enumerator
322 fn get_irq_info(&self, irq_index: u32) -> Option<VfioIrq> { in get_irq_info()
335 fn enable_irq(&self, irq_index: u32, event_fds: Vec<&EventFd>) -> Result<(), VfioError> { in enable_irq()
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