snapshot: add container_snapshot_path to load snapshot request
#4072
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This PR is not intended to be merged, it just serves as an illustration of what I want to achieve in #4014. |
When a snapshot of a VM created by firecracker-containerd is restored, due to the non-deterministic container snapshot path (it depends on the containerd snapshotter implementation), the container snapshot path at the time of the snapshot creation is different from the container snapshot path at the time of the snapshot loading. Firecracker does not support renaming resources at snapshot-restore, so as a workaround we manually substitute the VM state with the path of the block device backing the container snapshot to the path of the new container snapshot path received from the LoadSnapshot request. Closes firecracker-microvm#4014 Signed-off-by: Georgiy Lebedev <lebedev.gk@phystech.edu>
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Changes
Firecracker does not support renaming resources at snapshot-restore, so as a workaround we manually substitute the VM state with the path of the block device backing the container snapshot to the path of the new container snapshot path received from the LoadSnapshot request.
Reason
When a snapshot of a VM created by firecracker-containerd is restored, due to the non-deterministic container snapshot path (it depends on the containerd snapshotter implementation), the container snapshot path at the time of the snapshot creation is different from the container snapshot path at the time of the snapshot loading.
Closes #4014
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CONTRIBUTING.md.PR Checklist
CHANGELOG.md.TODOs link to an issue.rust-vmm.