[CentOS] merge an lvm snapshot back

[John R Pierce]

Joseph L. Casale wrote:
>> Well, I was thinking about vm and such, assuming at some point there was an OS
>> reading the filesystem tht can run rsync.  But I concede the point, it
>> definitely makes things tricky.
>>     
>
> It does seem there is some talk about the functionality, I assume it will happen sooner or later...
>   


indeed, most of the snapshot systems I've seen to date have a 'revert' 
function which makes the specified snapshot the 'default' live 
version.   OTOH, most of these only support readonly snapshots.