Not sure of /etc/crypttab entry on Ubuntu 18.04












1














I have been following the following guides:
http://www.cim.mcgill.ca/~anqixu/blog/index.php/2018/06/20/install-18-04-on-encrypted-partitions-xps15-cuda/
How can I install Ubuntu encrypted with LUKS with dual-boot?



I have created a 4G Swap Partition on the encrypted LVM partition as per the latter link however not sure of the entry to use in /etc/crypttab file.



If I run:



blkid | grep swap

/dev/mapper/vgroot-lvswap: UUID="12345678987654321" TYPE=swap


Does the entry need to be



vgroot-lvswap UID=12345678987654321 /dev/urandom swap,offset=1024,cipher=aes-xts-plain64









share|improve this question



























    1














    I have been following the following guides:
    http://www.cim.mcgill.ca/~anqixu/blog/index.php/2018/06/20/install-18-04-on-encrypted-partitions-xps15-cuda/
    How can I install Ubuntu encrypted with LUKS with dual-boot?



    I have created a 4G Swap Partition on the encrypted LVM partition as per the latter link however not sure of the entry to use in /etc/crypttab file.



    If I run:



    blkid | grep swap

    /dev/mapper/vgroot-lvswap: UUID="12345678987654321" TYPE=swap


    Does the entry need to be



    vgroot-lvswap UID=12345678987654321 /dev/urandom swap,offset=1024,cipher=aes-xts-plain64









    share|improve this question

























      1












      1








      1







      I have been following the following guides:
      http://www.cim.mcgill.ca/~anqixu/blog/index.php/2018/06/20/install-18-04-on-encrypted-partitions-xps15-cuda/
      How can I install Ubuntu encrypted with LUKS with dual-boot?



      I have created a 4G Swap Partition on the encrypted LVM partition as per the latter link however not sure of the entry to use in /etc/crypttab file.



      If I run:



      blkid | grep swap

      /dev/mapper/vgroot-lvswap: UUID="12345678987654321" TYPE=swap


      Does the entry need to be



      vgroot-lvswap UID=12345678987654321 /dev/urandom swap,offset=1024,cipher=aes-xts-plain64









      share|improve this question













      I have been following the following guides:
      http://www.cim.mcgill.ca/~anqixu/blog/index.php/2018/06/20/install-18-04-on-encrypted-partitions-xps15-cuda/
      How can I install Ubuntu encrypted with LUKS with dual-boot?



      I have created a 4G Swap Partition on the encrypted LVM partition as per the latter link however not sure of the entry to use in /etc/crypttab file.



      If I run:



      blkid | grep swap

      /dev/mapper/vgroot-lvswap: UUID="12345678987654321" TYPE=swap


      Does the entry need to be



      vgroot-lvswap UID=12345678987654321 /dev/urandom swap,offset=1024,cipher=aes-xts-plain64






      partitioning encryption swap






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Jan 3 at 22:27









      drossdross

      1083




      1083






















          1 Answer
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          Your format is valid for entry in the /etc/crypttab but update your UID to UUID



          vgroot-lvswap  UUID="12345678987654321" /dev/urandom swap,offset=1024,cipher=aes-xts-plain64


          And also make sure the name vgroot-lvswap is the name you used when you ran sudo cryptsetup luksOpen .... name_of_device_mapper!






          share|improve this answer





















          • Thanks with the slight adjustment things seem to be running nicely now.
            – dross
            Jan 3 at 23:27











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          Your format is valid for entry in the /etc/crypttab but update your UID to UUID



          vgroot-lvswap  UUID="12345678987654321" /dev/urandom swap,offset=1024,cipher=aes-xts-plain64


          And also make sure the name vgroot-lvswap is the name you used when you ran sudo cryptsetup luksOpen .... name_of_device_mapper!






          share|improve this answer





















          • Thanks with the slight adjustment things seem to be running nicely now.
            – dross
            Jan 3 at 23:27
















          1














          Your format is valid for entry in the /etc/crypttab but update your UID to UUID



          vgroot-lvswap  UUID="12345678987654321" /dev/urandom swap,offset=1024,cipher=aes-xts-plain64


          And also make sure the name vgroot-lvswap is the name you used when you ran sudo cryptsetup luksOpen .... name_of_device_mapper!






          share|improve this answer





















          • Thanks with the slight adjustment things seem to be running nicely now.
            – dross
            Jan 3 at 23:27














          1












          1








          1






          Your format is valid for entry in the /etc/crypttab but update your UID to UUID



          vgroot-lvswap  UUID="12345678987654321" /dev/urandom swap,offset=1024,cipher=aes-xts-plain64


          And also make sure the name vgroot-lvswap is the name you used when you ran sudo cryptsetup luksOpen .... name_of_device_mapper!






          share|improve this answer












          Your format is valid for entry in the /etc/crypttab but update your UID to UUID



          vgroot-lvswap  UUID="12345678987654321" /dev/urandom swap,offset=1024,cipher=aes-xts-plain64


          And also make sure the name vgroot-lvswap is the name you used when you ran sudo cryptsetup luksOpen .... name_of_device_mapper!







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Jan 3 at 23:05









          George UdosenGeorge Udosen

          20.1k94367




          20.1k94367












          • Thanks with the slight adjustment things seem to be running nicely now.
            – dross
            Jan 3 at 23:27


















          • Thanks with the slight adjustment things seem to be running nicely now.
            – dross
            Jan 3 at 23:27
















          Thanks with the slight adjustment things seem to be running nicely now.
          – dross
          Jan 3 at 23:27




          Thanks with the slight adjustment things seem to be running nicely now.
          – dross
          Jan 3 at 23:27


















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