zfsdu - ZFS Disk Usage

A ncdu-like TUI application for ZFS with snapshot management. Navigate your ZFS pools, datasets, and volumes in a tree view, and manage snapshots interactively.

Quick Install

curl -sSL https://gitlab.datazone.de/kidev/zfsdu/-/raw/main/install-binary.sh | sudo bash

Features

• Tree View: Hierarchical display of ZFS pools, datasets, and volumes
• Expand/Collapse: Navigate the tree structure interactively
• Snapshot Management: Mark and delete multiple snapshots at once
• Size Visualization: Bar graphs showing relative sizes
• Date Column: Shows creation date of datasets and snapshots
• Search: Find datasets or snapshots by name
• Filter: Filter the view to show only matching items
• Bulk Selection: Select/unselect all visible snapshots (like Midnight Commander)
• Sorting: Toggle between Size/Date/Name sorting
• Dry-Run Mode: Preview deletions without actually deleting
• Auto-Refresh: Automatically refresh the view periodically
• Mouse Support: Click to select, scroll wheel to navigate, right-click to mark
• Configurable Colors: Customize the UI via config file
• MC-Style UI: Classic Midnight Commander look and feel

Screenshot

 zfsdu [Sort: Size]
┌─────────────────────────────────────────────────────────────────────────────┐
│ Name                                             Date          Size         │
│─────────────────────────────────────────────────────────────────────────────│
│ ▾ rpool                                      2024-01-01      500.0G  █████  │
│  ├──▾ ROOT                                   2024-01-01      120.0G  ██     │
│  │   ├── pve-1                               2024-01-15       80.0G  █      │
│  │   └──○ @autosnap_2024-01-15               2024-01-15       12.0G         │
│  └──▸ data                                   2024-01-01      380.0G  ████   │
│ ▸ tank                                       2023-12-01        2.0T  █████  │
├─────────────────────────────────────────────────────────────────────────────┤
│ 2 marked (45.5G)                                                            │
└─────────────────────────────────────────────────────────────────────────────┘
 ? Help  s Sort  D Dry  a Auto  / Find  f Filt  d Del  q Quit

Installation

Binary (recommended)

curl -sSL https://gitlab.datazone.de/kidev/zfsdu/-/raw/main/install-binary.sh | sudo bash

Build from Source

# Install Rust
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
source ~/.cargo/env

# Clone and build
git clone https://gitlab.datazone.de/kidev/zfsdu.git
cd zfsdu
cargo build --release

# Install
sudo cp target/release/zfsdu /usr/local/bin/

Usage

zfsdu

Keyboard Shortcuts

Key	Action
Navigation
↑/k, ↓/j	Move up/down
Enter/→/l	Expand/collapse dataset
Home/End	First/last item
PgUp/PgDn	Page up/down
Mouse scroll	Scroll list
Left-click	Select item
Right-click	Toggle mark
Tree
e	Expand all
c	Collapse all
Selection (current scope)
Space	Mark/unmark snapshot
+	Select all in scope
-	Unselect all in scope
*	Invert selection in scope
Search & Filter
/	Search (n=next, N=prev)
f	Filter visible items
Esc	Clear filter
Sort & View
s	Toggle sort: Size/Date/Name
D	Toggle dry-run mode
a	Toggle auto-refresh (30s)
Actions
d / F8	Delete marked snapshots (2x to confirm)
r / F5	Refresh
? / F1	Help
q / F10	Quit

Configuration

Create ~/.config/zfsdu/config.toml to customize colors:

# Auto-refresh interval in seconds (0 to disable)
auto_refresh_interval = 30

[colors]
# Available: black, red, green, yellow, blue, magenta, cyan, white
# Light: lightred, lightgreen, lightyellow, lightblue, lightmagenta, lightcyan
# Also: gray, darkgray

background = "blue"
foreground = "white"
header = "yellow"
selected_bg = "cyan"
selected_fg = "black"
marked = "yellow"
snapshot = "lightcyan"
size = "lightgreen"
tree = "darkgray"
search_match = "lightred"

Requirements

• Linux with ZFS installed
• Terminal with UTF-8 support
• Root privileges (for snapshot deletion)

Author

Florian Schermer DATAZONE GmbH

License

CDDL (Common Development and Distribution License) - same as OpenZFS.

See LICENSE for details.