According to https://github.com/g2p/bedup/tree/wip/dedup-syscall "The clone call is considered a write operation and won''t work on read-only snapshots." Is this fixed on newer kernels? -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html