# Advancements in FSCK for EOS

- Institution: CERN
- Department: HEP Computing
- Speaker: Gianmaria Del Monte
- Year: 2025
- Language: English
- Subjects: Computer science
- Source: [CERN](https://videos.cern.ch/record/3022350)
- Licence: [CERN](http://copyright.web.cern.ch)
- Who can watch: Tweens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

One of a critical components in EOS is fsck, responsible for scanning, verifying, and repairing inconsistencies in the filesystem.

This talk will provide an in-depth exploration of fsck in EOS, covering its architecture, scanning mechanisms, and repair strategies. We will discuss recent improvements, including the introduction of a best-effort mode, and enhancements in erasure-coded file scanning, which significantly boost performance while minimizing the impact on the running instance..

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## Lectures

1. [Advancements in FSCK for EOS](https://invisiblenetwork.ai/learn/cern/3022350/2b566b7baa08), 17 min (CERN's player)