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22.7 Mounting at Boot

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chrisgshaw
chrisgshaw Posts: 1
edited June 2018 in LFS201 Class Forum - Discontinued

In section 22.7, Mounting at Boot, it says to enter SECRET /dev/mapper/MYSECRET but according to the man 5 page for crypttab, I'm interpreting it as needing the first field to be /dev/mapper/MYSECRET and the second to be /dev/sdb7, or the underlying block device. 

It seems that both work so I was wondering what the difference was, if any.

Thanks!

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  • luisviveropena
    luisviveropena Posts: 1,154
    edited June 2018
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    Hi,

    From the crypttab(5) man page:

    [...]

    The first field contains the name of the resulting encrypted block device; the device is set up at /dev/mapper/name.

    The second field contains a path to the underlying block device. If the block device contains a LUKS signature, it is opened as a LUKS encrypted partition; otherwise it is assumed to be a raw dm-crypt partition.

    [...]

    So it's ok as it's shown in 22.7, as the _name_ of the encrypted block device goes first, and second the underlying block device.

    Note: BTW, I'm deleting the duplicated post.

    Regards,

    Luis.

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