Odd BTRFS COW behaviour
lists at colorremedies.com
Fri Jan 17 13:38:58 UTC 2014
On Jan 17, 2014, at 6:06 AM, James Hogarth <james.hogarth at gmail.com> wrote:
> So far as I understand it when in the same pool cross-subvolume COW should be valid (as shown in /data on the server) - even if technically under separate mounts.
I haven't yet found anything newer than this:
The clone can be in different subvolumes but the source and destination must be the same mount point.
There's a similar effect with btrfs send that might be related, and it has patches upstream.
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