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From: Zdenek Kabelac <zkabelac@redhat.com>
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Date: Fri, 4 Sep 2015 13:05:34 +0200
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Subject: Re: [linux-lvm] Does LVM always do 'dm suspend' when lvcreating a
	thin snapshot?
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Dne 4.9.2015 v 00:04 Mike McCracken napsal(a):
> When creating a thin snapshot of a thin volume, does LVM always freeze the FS?
>
> I see when I run lvcreate with -vvv that it sends the 'dm suspend' message to
> the origin lv, but on looking at the code I wasn't quite able to convince
> myself that it will always do that, or under what circumstances it won't.
>

Hi

Yes - suspend of thin's snapshot origin is always enforced
as you normally want snapshot FS to be in consistent state.

Zdenek