sdb

The Slick/Simple Debugger – a pipeline-based debugger for Linux kernel and userland, built on drgn.

sdb attaches to a live kernel, a running process, or a crash/core dump and provides a composable set of commands connected by pipes:

sdb> stacks -m zfs | count
(unsigned long long)12

sdb> find_task 1 | member comm
(char [16])"systemd"

sdb> spa | member spa_name ! sort
(char [256])"data"
(char [256])"rpool"

Features

  • 50+ built-in commands for Linux kernel internals, ZFS, and SPL data structures.

  • Pipeline architecture – compose commands with | and pipe to the shell with !.

  • Session recording – capture memory accesses into a portable vmcore and replay offline.

  • Extensible – write your own commands in Python and load them at runtime.

  • Library API – embed sdb in your own tools (see Using sdb as a library).

  • mdb compatibility – use the familiar symbol::cmd syntax.

Getting Started

Tutorials

Reference

Project