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docs: switch to blockfile snapshotter for SEV-SNP in runtime-rs

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Updated the configuration guide to use `shared_fs = "none"`. This
change reflects that `virtio-9p` is deprecated in `runtime-rs` and
recommends the blockfile snapshotter as a stable alternative to
the buggy `virtio-fs` in SEV-SNP QEMU versions.

But this's limited in the nerdctl or ctr tools.

Signed-off-by: Alex Lyn <alex.lyn@antgroup.com>
This commit is contained in:
Alex Lyn
2026-03-06 10:59:10 +08:00
committed by Fabiano Fidêncio
parent 65b2a75aca
commit 8dae67794a
1 changed files with 4 additions and 0 deletions
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docs/how-to/how-to-run-kata-containers-with-SNP-VMs.md
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@@ -96,6 +96,10 @@ path = "/path/to/qemu/build/qemu-system-x86_64"
```toml
shared_fs = "virtio-9p"
```
- Use `blockfile` snapshotter: Since virtio-fs remains unsupported due to bugs in QEMU snp-v3, and virtio-9p is no longer supported in runtime-rs, it is recommended to use the blockfile snapshotter. This allows container images to be managed via block devices without relying on a shared file system. To enable this, set the `snapshotter` to `blockfile` in the containerd config file, please refer to [blockfile guide](https://github.com/containerd/containerd/blob/main/docs/snapshotters/blockfile.md) for more information. Additionally, shared_fs should be set to "none" since no shared file system is used.
```toml
shared_fs = "none"
```
- Disable `virtiofsd` since it is no longer required (comment out)
```toml
# virtio_fs_daemon = "/usr/libexec/virtiofsd"