kernel-fuse-diagnosis

Diagnose FUSE kernel faults by analyzing mount points, connection states, and daemon behavior.

3|2|Updated Apr 24, 2026
One-click install
npx skills add https://github.com/openeuler-mirror/witty-diagnosis-agent --skill kernel-fuse-diagnosis
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: kernel-fuse-diagnosis
Source: https://github.com/openeuler-mirror/witty-diagnosis-agent/tree/main/skills/kernel-fuse-diagnosis
Command: npx skills add https://github.com/openeuler-mirror/witty-diagnosis-agent --skill kernel-fuse-diagnosis

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This skill addresses complex FUSE (Filesystem in Userspace) failures, such as system hangs, EIO errors, and performance degradation, by providing a structured, three-layer diagnostic path from system-level symptoms to code-level root causes.

Core Features & Use Cases

  • Multi-Layered Analysis: Systematically isolates issues across the mount point, FUSE connection, daemon process, and kernel module.
  • Automated Branching: Automatically identifies and triggers specific diagnostic branches for common failure modes like daemon crashes, request queue blocking, and writeback cache inconsistencies.
  • Use Case: When a FUSE-based filesystem becomes unresponsive or returns EIO, this skill analyzes the kernel connection state and daemon thread status to pinpoint whether the issue is a deadlock, a configuration error, or a kernel-level bug.

Quick Start

Use the kernel-fuse-diagnosis skill to analyze the FUSE mount point at /mnt/fuse and identify the root cause of the current filesystem hang.

Frequently Asked Questions about kernel-fuse-diagnosis

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I diagnose a FUSE filesystem hang or unresponsive mount point?

Diagnosing a FUSE filesystem hang requires analyzing the kernel connection state and daemon thread status to pinpoint whether the issue is a deadlock, a configuration error, or a kernel-level bug. This skill systematically isolates issues across the mount point, FUSE connection, daemon process, and kernel module.

What causes EIO errors in FUSE-based filesystems and how do I troubleshoot them?

EIO errors in FUSE-based filesystems often stem from daemon crashes, request queue blocking, or writeback cache inconsistencies. Troubleshooting involves a multi-layered analysis that automatically identifies and triggers specific diagnostic branches to trace the failure from system-level symptoms to code-level root causes.

How does kernel-level FUSE fault diagnosis identify daemon process deadlocks?

Kernel-level FUSE fault diagnosis identifies daemon process deadlocks by analyzing mount points, connection states, and daemon process behavior. It applies automated branching to check daemon thread status and kernel module parameters, isolating the specific failure mode causing the unresponsiveness.

Do I need access to system-level diagnostic tools to troubleshoot FUSE kernel module bugs?

Yes, troubleshooting FUSE kernel module bugs requires access to system-level diagnostic tools and kernel module parameters. This access is necessary to perform comprehensive root cause analysis and systematically isolate issues across the FUSE connection and daemon process layers.

What is the best way to resolve FUSE performance bottlenecks and degradation?

The best way to resolve FUSE performance bottlenecks is through a structured three-layer diagnostic path that analyzes the mount point, FUSE connection, and daemon process behavior. This approach isolates configuration errors or writeback cache inconsistencies that cause performance degradation.