Editing XFS (section)

=== Third generation XFS===
[[File:XFS v4 Linux Kernel Option.jpg|thumb|XFS v4 is deprecated. Partitions have to be reformatted with XFS v5.]]
Linux kernel 5.10, released in December 2020, included the new on-disk format XFS v5. This was a hard break, since the deprecated XFS v4 can not be converted to XFS v5. Data on partitions formatted with XFS v4 has to be backed up to another partition or media in order to restore it after formatting the old partition with XFS v5, which completely wipes all data on it. The support for XFS v4 will be removed from the Linux kernel in September 2030.<ref>https://www.haiku-os.org/docs/develop/file_systems/xfs.html</ref>

XFS v5 introduced "bigtime", to store inode timestamps as a 64-bit nanosecond counter instead of the traditional 32-bit seconds counter. This postpones the previous [[Year 2038 problem]] until the year 2486.<ref name="bigtime"/> It also introduced metadata checksums.

The Gentoo Handbook, [[Gentoo Linux]]'s official installation manual, has recommended XFS as the "all-purpose all-platform filesystem" since 28 Jun 2023, succeeding [[Ext4]].<ref>{{Cite web |title=Difference between revisions of "Handbook:Parts/Installation/Disks" - Gentoo wiki |url=https://wiki.gentoo.org/index.php?title=Handbook:Parts/Installation/Disks&diff=prev&oldid=1248552 |access-date=2024-04-25 |website=wiki.gentoo.org}}</ref>