fix: ensure fs sync before snapshot

admin/scripts/joj-container-backup

@@ -10,6 +10,7 @@ bck_list() {
 bck_update() {
 
 	zfs set sync=standard joj
+	sleep 5
 	LIST=($(zfs list -j -t snapshot | jq -rc '[ .datasets | .[] | {dataset: .dataset, version: .snapshot_name} ] | group_by(.dataset) | map({(.[0].dataset): .[-1].version}) | .[]' | tr "\n" " " | sed 's/[{}:"]/ /g'))
 	for((i=0; i < ${#LIST[@]}; i+=2)); do 
 		zfs snapshot ${LIST[i]}@$DATE
@@ -32,6 +33,7 @@ bck_prune() {
 bck_init() {
 
 	zfs set sync=standard joj
+	sleep 5
 	zfs snapshot joj/$FS
 	zfs send -v joj/$FS | ssh manuel@202.121.180.23 $FS
 	zfs set sync=disabled joj