diff --git a/docs/linux/filesystems.md b/docs/linux/filesystems.md
index 3dbec96..81a20bb 100644
--- a/docs/linux/filesystems.md
+++ b/docs/linux/filesystems.md
@@ -24,6 +24,10 @@ btrfs subvolume delete "`echo main-* | tr ' ' \\\\n | sort | head -n 1`"
 #### Resize
 ```bash
 btrfs filesystem resize max /mnt/dmp/
+
+# or for view ID
+btrfs device usage /mnt/dmp/
+btrfs filesystem resize ID:max /mnt/dmp/
 ```
 #### Defragment / compress
 ```bash