--- title: "EROFS With Linux 7.2 Better Handles Large Sparse AI Datasets, More Efficient I/O" url: https://daily.dev/posts/erofs-with-linux-7-2-better-handles-large-sparse-ai-datasets-more-efficient-i-o-igyctzkue source_url: https://www.phoronix.com/news/EROFS-Sparse-AI-Datasets type: article source: "Phoronix" published: 2026-06-23T13:46:43.084Z updated: 2026-06-23T13:47:18.600Z tags: ["linux", "file-systems"] reading_time: 2 upvotes: 0 comments: 0 language: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # EROFS With Linux 7.2 Better Handles Large Sparse AI Datasets, More Efficient I/O **[Phoronix](https://daily.dev/sources/phoronix)** · 2 min read · 0 upvotes · 0 comments ## Summary Linux 7.2 brings two notable improvements to the EROFS read-only file system. First, chunk-based inode mapping has been optimized for more efficient I/O via an updated erofs_map_chunks() implementation. Second, sparse file support has been added to the pcluster layout, specifically to better handle large sparse AI datasets — without this, overlayfs would allocate excess space on copy-up and SEEK_HOLE would fail to report holes. Additionally, the EROFS FSCACHE back-end, previously deprecated due to NETFS becoming a hard dependency, has been fully removed in Linux 7.2, with equivalent functionality now covered by file-backed mounts and fanotify pre-content hooks. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [EXT4, EROFS & NTF3 File-System Drivers Ready With Improvements For Linux 6.18](https://daily.dev/posts/ext4-erofs-ntf3-file-system-drivers-ready-with-improvements-for-linux-6-18-hbelp7vf9) · Phoronix · 0 upvotes · 0 comments - [F2FS Integrates FSERROR Reporting, Reduces Memory Footprint In Linux 7.2](https://daily.dev/posts/f2fs-integrates-fserror-reporting-reduces-memory-footprint-in-linux-7-2-iz9sxnfev) · Phoronix · 0 upvotes · 0 comments - [F2FS Delivers "Several Key Performance Optimizations" With Linux 7.0](https://daily.dev/posts/f2fs-delivers-several-key-performance-optimizations-with-linux-7-0-avyyigqjl) · Phoronix · 0 upvotes · 0 comments --- Tags: [#linux](https://daily.dev/tags/linux), [#file-systems](https://daily.dev/tags/file-systems) [View this post on daily.dev](https://daily.dev/posts/erofs-with-linux-7-2-better-handles-large-sparse-ai-datasets-more-efficient-i-o-igyctzkue)