Re: [ovirt-users] Removing Snapshot sub tasks

2014-05-25 Thread Meital Bourvine 
Hi, 

I'll try to explain - I hope that I'll get it right :) 

Lets say that you have a vm with one disk, and you create a snapshot - what it 
actually does is creating another disk and start writing to it from this point. 
Now lets say that you create another snapshot now - again, it'll create another 
disk and start writing to it. 
Now if you want to remove the first snapshot, you need to merge the information 
that was written on this snapshot, so you won't loose data in the second 
snapshot. 

- Original Message -

 From: Mohyedeen Nazzal mohyedeen.naz...@gmail.com
 To: Users@ovirt.org
 Sent: Sunday, May 25, 2014 9:40:57 AM
 Subject: [ovirt-users] Removing Snapshot sub tasks

 Greetings,
 When removing a snapshot, why does the following sub task is executed:

 * Merging snapshot of disk DiskNname ?

 Attached a screenshot of the tasks executed.

 I'm just wondering why there is a need to perform merge ?

 Thanks,
 Mohyedeen

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Re: [ovirt-users] Removing Snapshot sub tasks

2014-05-25 Thread Mohyedeen Nazzal 
Thanks Meital,
It seems reasonable now.

Thanks again.


On Sun, May 25, 2014 at 10:52 AM, Meital Bourvine mbour...@redhat.comwrote:

 Hi,

 I'll try to explain - I hope that I'll get it right :)

 Lets say that you have a vm with one disk, and you create a snapshot -
 what it actually does is creating another disk and start writing to it from
 this point. Now lets say that you create another snapshot now - again,
 it'll create another disk and start writing to it.
 Now if you want to remove the first snapshot, you need to merge the
 information that was written on this snapshot, so you won't loose data in
 the second snapshot.


 --

 *From: *Mohyedeen Nazzal mohyedeen.naz...@gmail.com
 *To: *Users@ovirt.org
 *Sent: *Sunday, May 25, 2014 9:40:57 AM
 *Subject: *[ovirt-users] Removing Snapshot sub tasks


 Greetings,
 When removing a snapshot, why does the following sub task is executed:

- Merging snapshot of disk DiskNname ?

 Attached a screenshot of the tasks executed.

 I'm just wondering why there is a need to perform merge ?


 Thanks,
 Mohyedeen


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 Users mailing list
 Users@ovirt.org
 http://lists.ovirt.org/mailman/listinfo/users



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