On Thu, Jun 9, 2011 at 4:59 AM, Yongqiang Yang [off-list ref] wrote:

quoted

But I do understand the difference. And also, when it comes to fs level
snapshotting I would suspect that it would do something we can not do
with the current solutions, for example per-file or per-directory snapshots,
cat ext4 snapshots do that ?

Hi Lukas,

I noticed that there is no answer to this question in the thread.  I

I think I answered this question with No it can't ;-)

can give the question the answer that ext4 can snapshot per-file or
per-directory, and can exclude some files or directories from being
snapshotted.

So the full answer is that ext4 snapshot CAN exclude
certain files/dirs from snapshot, but this feature is not fully implemented yet
(I have it in a dev branch)

--
Best Wishes
Yongqiang Yang

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