~ubuntu-installer/partman-btrfs/master

1 by Joey Hess
initial commit of partman-btrfs
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* Support for multi-volume btrfs filesystems
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* Support for other mkfs.btrfs options, if any are useful.
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* Support for btrfs snapshots / using existing btrfs?
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* mountoptions is missing a few options that may be worth supporting,
11 by Colin Watson
typo
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  including degraded, and all options that require a parameter.
1 by Joey Hess
initial commit of partman-btrfs
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* mountoptions contains nobarrier, which is an unsafe option. Remove? Warn?
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* Resizing?
2 by Joey Hess
idea from Roger Leigh re subvolumes
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* How about installation into different subvolumes?
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  Example:
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  / (root), /usr, /var and /home each on the same btrfs filesystem,
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  but as separate named subvolumes (root/default, usr, var and home).
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  This would break the one filesystem==one mount concept currently
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  used by the partitioner.  Here, one filesystem would be mounted
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  in several places, but with a slightly different subvol mount
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  option.  Maybe handle like LVM, where there's a separate dialogue
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  for creating LVs (subvolumes), and then select individual
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  subvolumes on the main partitioning dialogue for mounting in a
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  given location.
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