Re: Q: Why subvolumes?

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On Jul 23, 2013, at 1:43 PM, Jerome Haltom <wasabi@xxxxxxxxx> wrote:

> Why not just create the new dev_id on the destination snapshot of any
> directory?

Right now, snapshots of subvolumes do not contain the contents of contained subvolumes. Hmmm, that sounds horrid.

Subvolume A
	File 1
	File 2
	Subvolume B
		File 3
		File 4

If I snapshot subvolume A, the resulting snapshot does not contain File 3 and File 4. Subvolume B is a regular folder in the snapshot of Subvolume A.

So if every directory were a subvolume by default, this limitation would need to be resolved or snapshotting would become useless. I'm sure there's a more coherent explanation why this isn't desired.

> That way the snapshot can share inodes with is source.


Snapshots already share inode numbers.


Chris Murphy--
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