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Oracle Linux: 64bit Features for EXT4 Filesystem (Doc ID 2704139.1)

Last updated on AUGUST 29, 2023

Applies to:

Linux OS - Version Oracle Linux 7.6 and later
Linux x86-64


To enable 64bit feature flag for ext4 filesystems.

ext4 allocates storage space in units of "blocks". A block is a group of sectors between 1KiB and 64KiB, and the number of sectors must be an integral power of 2. Blocks are in turn grouped into larger units called block groups. Block size is specified at mkfs time and typically is 4KiB. By default a filesystem can contain 2^32 blocks; if the '64bit' feature is enabled, then a filesystem can have 2^64 blocks.


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In this Document
 For systems running Oracle Linux 7
 For systems running Oracle Linux 8

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