Choosing Between rsync and btrfs receive in LXD: Exposure Differences Under CVE-2026-87799

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Choosing Between rsync and btrfs receive in LXD: Exposure Differences Under CVE-2026-87799 Storage design is security design Two LXD operators can run the same release, apply the same patch cadence, and carry different risk from CVE-2026-87799. The variable is how they move workloads and which storage driver they chose. When LXD receives an instance or custom volume through migration, it hands the stream to an external tool. The default is rsync. On hosts using the btrfs driver, LXD can instead use btrfs receive to replay an optimized send stream.

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