Which statement is true about btrfs file system devices?

Question

Options

• AYou must execute the btrfs device scan after every reboot to add a device to a btrfs file system.
• BThe btrfs device scan -all-devices command scans physical devices looking for members of a btrfs
• CBlocks are automatically rebalanced across all existing devices after adding new devices.
• DA device may be added to btrfs only if the file system is unmounted.

• A
  6% (3)
• B
  70% (33)
• C
  4% (2)
• D
  19% (9)

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