proxmox-rrd: use syncfs after writing rrd files

Signed-off-by: Dietmar Maurer <dietmar@proxmox.com>

src/bin/proxmox-backup-proxy.rs

@@ -30,7 +30,9 @@ use proxmox_rest_server::{
     ServerAdapter, WorkerTask, cleanup_old_tasks,
 };
 
-use proxmox_backup::rrd_cache::{ rrd_update_gauge, rrd_update_derive, initialize_rrd_cache};
+use proxmox_backup::rrd_cache::{
+    initialize_rrd_cache, rrd_update_gauge, rrd_update_derive, rrd_sync_journal,
+};
 use proxmox_backup::{
     server::{
         auth::check_pbs_auth,
@@ -896,6 +898,8 @@ async fn run_stat_generator() {
 
         generate_host_stats().await;
 
+        rrd_sync_journal();
+
         tokio::time::sleep_until(tokio::time::Instant::from_std(delay_target)).await;
 
      }

src/rrd_cache.rs

@@ -94,6 +94,14 @@ pub fn extract_rrd_data(
     rrd_cache.extract_cached_data(basedir, name, cf, resolution, Some(start), Some(end))
 }
 
+/// Sync/Flush the RRD journal
+pub fn rrd_sync_journal() {
+    if let Ok(rrd_cache) = get_rrd_cache() {
+        if let Err(err) = rrd_cache.sync_journal() {
+            log::error!("rrd_sync_journal failed - {}", err);
+        }
+    }
+}
 /// Update RRD Gauge values
 pub fn rrd_update_gauge(name: &str, value: f64) {
     if let Ok(rrd_cache) = get_rrd_cache() {