[prev in list] [next in list] [prev in thread] [next in thread] 

List:       zfs-discuss
Subject:    Re: [zfs-discuss] scripting incremental replication data streams
From:       Karl Wagner <karl () mouse-hole ! com>
Date:       2012-09-19 8:35:19
Message-ID: 4c459dc40ca038748ce7a27a8f88cf00 () mouse-hole ! com
[Download RAW message or body]

Hi Edward,

My own personal view on this is that the simplest option is the best.

In your script, create a new snapshot using one of 2 names. Let's call 
them SNAPSEND_A and SNAPSEND_B. You can decide which one by checking 
which currently exists.

As manual setup, on the first run, create SNAPSEND_A and send it to 
your target. This can, obviously, be done incrementally from your last 
replication/last common snapshot.

Now in your script, you would:
* Check your source dataset for the existence of SNAPSEND_A and 
SNAPSEND_B. Let's assume this is the first run after manual setup, so 
SNAPSEND_A will exist.
* Create SNAPSEND_B. Replicate this over to your receiving dataset.
* Remove SNAPSEND_A on both sides. This will leave all intermediate 
snapshots.

Next run, it will create SNAPSEND_A again, and remove B when finished.

Hope this helps.
Karl

_______________________________________________
zfs-discuss mailing list
zfs-discuss@opensolaris.org
http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
[prev in list] [next in list] [prev in thread] [next in thread]