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Securely deleting files from ext4 filesystems

Securely deleting files from ext4 filesystems

Posted Oct 13, 2011 12:14 UTC (Thu) by corbet (editor, #1)
In reply to: Securely deleting files from ext4 filesystems by lolando
Parent article: Securely deleting files from ext4 filesystems

Ext4 will normally overwrite blocks (btrfs, instead, is copy-on-write). The idea behind this patch set is that any blocks released from the file (as in the truncate case you mention) will be cleared/randomized by the filesystem code.


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