About rbd journal

About rbd journal

[changtao381]

HI,

There is requirement from customers that need to continuous backup rbd image
to backup device or another ceph cluster.

As far as I know , rbd journal can be used to record all the rbd mutations
to journal which is stored in rados objects in the same ceph cluster

Is it has interface to push rbd journal  to  another storage device or
another ceph cluster ? Or is is has dev plan? 

Or anyone has other good way to do backup ?  Thanks very much! 

Re: About rbd journal

[Jason Dillaman]

The in-development RBD journaling feature is designed to be utilized with a future RBD mirroring daemon to perform continuous and point-in-time consistent replication of RBD images to another Ceph cluster (specifically with disaster recovery situations in-mind).  

Until this feature is available and stable, periodic RBD incremental diff exports are probably the best backup alternative.

-- 

Jason Dillaman 


----- Original Message -----
> From: "changtao381" <changtao381@163.com>
> To: dillaman@redhat.com
> Cc: ceph-devel@vger.kernel.org
> Sent: Tuesday, December 8, 2015 10:10:17 PM
> Subject: About rbd journal
> 
> HI,
> 
> There is requirement from customers that need to continuous backup rbd image
> to backup device or another ceph cluster.
> 
> As far as I know , rbd journal can be used to record all the rbd mutations
> to journal which is stored in rados objects in the same ceph cluster
> 
> Is it has interface to push rbd journal  to  another storage device or
> another ceph cluster ? Or is is has dev plan?
> 
> Or anyone has other good way to do backup ?  Thanks very much!
> 
> 
> --
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