[Bug 1902103] [NEW] Ensure default fstab options are sane and consistent across all images

[David Krauser]

Public bug reported:

The default fstab entries for ubuntu cloud images are:

LABEL=cloudimg-rootfs / ext4 defaults 0 0
LABEL=UEFI /boot/efi vfat defaults 0 0

These entries do not align with the defaults that we use elsewhere. We
should decide on the defaults for fstab, and apply those consistently
across all Ubuntu images.

--

quoted from ~xnox: I expect [these entries] to be:

LABEL=cloudimg-rootfs / ext4 discard,errors=remount-ro 0 1
LABEL=UEFI /boot/efi vfat umask=0077 0 1

** Affects: curtin (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: livecd-rootfs (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: maas (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: subiquity (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: ubiquity (Ubuntu)
     Importance: Undecided
         Status: New

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

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

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

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

** Description changed:

  The default fstab entries for ubuntu cloud images are:
  
  LABEL=cloudimg-rootfs / ext4 defaults 0 0
  LABEL=UEFI /boot/efi vfat defaults 0 0
  
  These entries do not align with the defaults that we use elsewhere. We
  should decide on the defaults for fstab, and apply those consistently
  across all Ubuntu images.
  
  --
  
- quoted from ~xnox: the expect [these entries] to be:
+ quoted from ~xnox: I expect [these entries] to be:
  
  LABEL=cloudimg-rootfs / ext4 discard,errors=remount-ro 0 1
  LABEL=UEFI /boot/efi vfat umask=0077 0 1

-- 
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https://bugs.launchpad.net/bugs/1902103

Title:
  Ensure default fstab options are sane and consistent across all images

Status in curtin package in Ubuntu:
  New
Status in livecd-rootfs package in Ubuntu:
  New
Status in maas package in Ubuntu:
  New
Status in subiquity package in Ubuntu:
  New
Status in ubiquity package in Ubuntu:
  New

Bug description:
  The default fstab entries for ubuntu cloud images are:

  LABEL=cloudimg-rootfs / ext4 defaults 0 0
  LABEL=UEFI /boot/efi vfat defaults 0 0

  These entries do not align with the defaults that we use elsewhere. We
  should decide on the defaults for fstab, and apply those consistently
  across all Ubuntu images.

  --

  quoted from ~xnox: I expect [these entries] to be:

  LABEL=cloudimg-rootfs / ext4 discard,errors=remount-ro 0 1
  LABEL=UEFI /boot/efi vfat umask=0077 0 1

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