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EXT4 In Linux 4.1 Adds File-System Level Encryption

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  • EXT4 In Linux 4.1 Adds File-System Level Encryption

    Phoronix: EXT4 In Linux 4.1 Adds File-System Level Encryption

    The EXT4 file-system updates for the Linux 4.1 kernel have been sent in and it features the file-system-level encryption support...

    http://www.phoronix.com/scan.php?pag...nges-Linux-4.1

  • #2
    Does this mean no more LUKS?

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    • #3
      Originally posted by Redi44 View Post
      Does this mean no more LUKS?
      No, it should be compared with eCryptfs.

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      • #4
        What about compatibility with older kernel?

        For example if I encrypt an ext4 with a brand new 4.1 kernel will it be readable if I move the disk to another machine with 3.16?

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        • #5
          Originally posted by Passso View Post
          What about compatibility with older kernel?

          For example if I encrypt an ext4 with a brand new 4.1 kernel will it be readable if I move the disk to another machine with 3.16?
          How could it be?

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          • #6
            Can i encrypt an existing partition with data on it without re-formatting?

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            • #7
              Passso
              There will be a filesystem feature flag for encryption. If your older kernel does not recognize this flag, it will refuse to mount the filesystem until you manually clear it with e2fsprogs.
              Then you can still access the unencrypted parts of the filesystem. Whether the encrypted parts will be preserved or lost I don't know.

              Kemosabe
              I would expect so, same as with eCryptFS.

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