Commits on Apr 5, 2024

1. storage: Improve handling of LUKS backed btrfs …

   Single-device btrfs volumes now behave like other filesystems:
   Unmounting all subvolumes will automatically lock the LUKS device, and
   mounting the first subvolume will automatically unlock it.
   
   Options in /etc/crypttab are now maintained correctly for btrfs
   volumes with multiple subvolumes. For example, the LUKS device is only
   "noauto" when all of the subvolumes are also "noauto", and it is
   readonly exactly when all of the subvolumes are readonly.
   
   Cockpit can't unfortunately always know whether a locked LUKS device
   is part of a single-device or multi-device btrfs volume.  (Because
   UDisks2 only tracks one parent of a fstab entry, we would need to fix
   that.) We assume that they are single-device volumes (because they are
   more common, probably) and let the user mount their subvolumes
   directly.
   
   If the assumption turns out to have been wrong, the mount operation is
   cleanly aborted.

   

   mvollmer committed Apr 5, 2024
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