proxmox-rrd: implement new CBOR based format

Storing much more data points now got get better graphs.

Signed-off-by: Dietmar Maurer <dietmar@proxmox.com>
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

proxmox-rrd/src/lib.rs

@@ -1,23 +1,14 @@
-//! # Simple Round Robin Database files with fixed format
+//! # Round Robin Database files
 //!
 //! ## Features
 //!
 //! * One file stores a single data source
-//! * Small/constant file size (6008 bytes)
-//! * Stores avarage and maximum values
-//! * Stores data for different time resolution ([RRDTimeFrameResolution](proxmox_rrd_api_types::RRDTimeFrameResolution))
+//! * Stores data for different time resolution
+//! * Simple cache implementation with journal support
+
+mod rrd_v1;
 
 pub mod rrd;
 
 mod cache;
 pub use cache::*;
-
-/// RRD data source tyoe
-#[repr(u8)]
-#[derive(Copy, Clone)]
-pub enum DST {
-    /// Gauge values are stored unmodified.
-    Gauge = 0,
-    /// Stores the difference to the previous value.
-    Derive = 1,
-}