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From: Ron Schneider <news-io-dx32@spamfilter.de>
Date: Mon, 02 Sep 2013 22:21:14 +0200
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Subject: [linux-lvm] Question before merging snapshot
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To: linux-lvm@redhat.com


Hi all,

Situation:

I have a volume A that contains production data.
For an experiment I created volume a' from A using
the snapshot function.
I then used a' for my experiment, which went very well.

Now I want to merge snapshot a' back into A. I have read that the merge
will effectively make A to be what a' was before, then a' will
disappear. However, all examples that I found on the net referred to
making snapshot a' then making changes to the origin A and finally using
--merge to revert A back to a'.
In my case though, I used the snapshot a' for writing instead of origin
A. I just want you to confirm that --merge will function the same way
nevertheless, thus making the modified content of a' appear in the
origin LV A.
Of course I will backup everything before the merge but I'd like to save
myself unnecessary recovery cycles so I thought I'd just ask the pros
beforehand - just to be sure.

-- 
kind regards,
             Ron