Stripping away the layers of abstractions: How does a filesystem work?
The article discusses the creation of TinyVFS, a simplified virtual filesystem designed to help users understand how filesystems operate. It highlights the architectural choices made to keep the system straightforward and accessible for learning. The author provides instructions on how to set up and use TinyVFS for educational purposes.
- ▪TinyVFS is a tiny virtual file system built in C, with a Python CLI to drive it.
- ▪The design of TinyVFS allows users to explore filesystem mechanics without the complexity of larger systems.
- ▪Users can create, import, and export files within the virtual disk using simple command-line commands.
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Record
| Original publisher | DEV.to (Top) |
| Canonical URL | https://dev.to/2sidcode/stripping-away-the-layers-of-abstractions-how-does-a-filesystem-work-35jf |
| Publication time | Fri, 29 May 2026 09:35:02 +0000 |
| Retrieval time | 2026-05-29T09:50:00.154Z |
| Last seen | 2026-05-29T09:50:00.154Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | ZEiwx4ptgYqP |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
Rights status (four layers)
WeSearch handling by dimension
| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 3958154) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } Siddharth Posted on May 29 Stripping away the layers of abstractions: How does a filesystem work? #filesystem #c #python #systemdesign Modern operating system filesystems (like ext4 or NTFS) are intimidating to look at. If you dive into their source code, you're immediately drowned in millions of lines of C and endless layers of kernel abstraction.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at DEV.to (Top).
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