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Peter J. Mello's Experience
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CooperativeHyperion's Experience
Storage devices of different sizes can be combined transparently into a single storage pool, drives can be swapped out with larger drives, or more drives added to the pool to increase capacity, etc. Support for software-based RAID 0, RAID 1, RAID 10. RAID is supported even with drives of different sizes, on a per-file basis. See More
Checksums for data and metadata, automatic detection of silent data corruptions. Can set files to be stored redundantly as multiple copies on the same drive, or spread across multiple drives to protect against corruption. Background scrub process for finding and repairing errors of files with redundant copies. See More
Ext4 is now officially old enough to purchase and consume alcohol in the United States, having first been released in December 2000 as part of Linux kernel 2.6.28. Its status as the "primus inter pares" (first among equals) of in-tree Linux file system drivers ensures it continues to see a steady stream of upgrades and enhancements as well as bug fixes with no plans to be replaced by a new major release of ext or deprecated in favor of another filesystem entirely. It almost certainly will be with us for another decade or more as the default Linux filesystem. See More
Still the standard by which I judge all filesystems, ext4 has never let me down. See More
The upgrade to 48-bit addresses took the limitations of the filesystem from a tight orbit out into deep space, with the maximum volume size now a comfortable 1 EiB (that's exbibytes with an 'e', over a million tebibytes) and the maximum single file to 16 TiB when using the default 4KiB block size. See More
With modern XFS (talking about the year 2021) I had very good experiences on an external thumb drive I am booting Linux from. My filesystem didn't get corrupted for a couple of years, even after hard resets or power outages. With f2fs, NILFS2 and NTFS3 (new open source driver from Paragon since Linux 5.15) I experienced damaged filsystems. See More