Open Stack

FYI

---------- Forwarded message ----------
From: Daniel Morris <daniel.morris at rackspace.com>
Date: 2013/11/7
Subject: Re: [Openstack] [TROVE] - Difference between Backup and Snapshot
To: Giuseppe Galeota <giuseppegaleota at gmail.com>


  Giuseppe,

 I recommend sending these questions on to the openstack-dev list.  This
may be why you are not seeing responses.   Someone from the Trove team
should jump in on that list give you a run down, and if not, I will do my
best to explain.  Per your first question, I believe it to be just a
terminology mismatch.  The system does backups and currently is implemented
using mysqldump and percona xtrabackup.  It is conceivable that someone
could create a backup type that does an actual volume snapshot, but that
capability has not been written yet.

 Thanks,
Daniel


  From: Giuseppe Galeota <giuseppegaleota at gmail.com>
Date: Wednesday, November 6, 2013 3:05 AM
To: "openstack at lists.openstack.org" <openstack at lists.openstack.org>
Subject: Re: [Openstack] [TROVE] - Difference between Backup and Snapshot

  Can you give me a simple workflow that explains the process of a
backup/snapshot?

 Thanks,
Giuseppe


2013/11/6 Giuseppe Galeota <giuseppegaleota at gmail.com>

> Dear all,
> what is the difference between Snapshot and Backup in the context of Trove
> (o Redwwarf) database backups that I see here<https://wiki.openstack.org/wiki/Trove/snapshot-design>
> ?
>
>  Is it maybe the following:
> - backup = copy of volume in which data are stored;
> - snapshot = copy of volume plus virtual machine used to host the engine?
>
>  Are they the same concept?
>
>  Thanks,
> Giuseppe
>
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