Protecting Data Integrity on Ext4 and XFS with dm-integrity and LUKS

Posted by linuxer on Dec 4, 2024 7:13 PM EDT
linuxconfig.org; By Egidio Docile 		Mail this story
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Unlike COW filesystems like BTRFS and ZFS, traditional Linux filesystems like ext4 and XFS have no way to detect slow data degradation (also known as bitrot), since they don’t perform data checksumming. When using those filesystems, however, we can store and verify integrity information at the block level, using dm-integrity. In this tutorial, we learn how to create dm-integrity devices with the integritysetup utility, and when creating LUKS containers, using cryptsetup.

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