[Bug 1818209] Re: installing on NVMe fails no disk with serial

[Ryan Harper]

Thanks for the report.

I suspect subiquity may need to validate the serial value with what's
present in /dev/disk/by-id to ensure that curtin finds the same device
here.


** Also affects: subiquity (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: curtin
       Status: New => Incomplete

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Title:
  installing on NVMe fails no disk with serial

Status in curtin:
  Incomplete
Status in subiquity package in Ubuntu:
  New

Bug description:
  While installing Ubuntu Server 18.04.2: curtin seems to compose the serial (id) for my NVMe storage incorrectly.
  Right after I give the installer the go-ahead to perform the installation (with nothing but default values) the command: ['curtin', 'block-meta', 'simple'] fails. The tracedump says:
  ValueError: no disk with serial 'THNSN5512GPU7_NVMe_TOSHIBA_512GB_________76KS12H7T5ZV' found.
  Under '/dev/disk/by-id' there indeed is no "nvme-THNSN5512GPU7_NVMe_TOSHIBA_512GB_________76KS12H7T5ZV" but rather "nvme-THNSN5512GPU7_NVMe_TOSHIBA_512GB__76KS12H7T5ZV" (missing 7 of the underscores)

  Workaround:
  Rebooting back to the installer, and before doing anything else, switch to a different terminal and manually create a symlink with the name curtis expects to find: cd /dev/disk/by_id ; ln -s ../../nvme0n1 nvme-THNSN5512GPU7_NVMe_TOSHIBA_512GB_________76KS12H7T5ZV
  After that the installation goes fine.

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