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Resize
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======
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2023-06-28 17:55:08 +00:00
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A mounted filesystem can be resized after creation, grown or shrunk. On a
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multi-device filesystem the space occupied on each device can be resized
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independently. Data that reside in the area that would be out of the new size
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are relocated to the remaining space below the limit, so this constrains the
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minimum size to which a filesystem can be shrunk.
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Growing a filesystem is quick as it only needs to take note of the available
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space, while shrinking a filesystem needs to relocate potentially lots of data
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and this is IO intense. It is possible to shrink a filesystem in smaller steps.
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See :ref:`btrfs filesystem resize<man-filesystem-resize>` for more.
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