Re: Copying trees from one consumer to another

[Jonathan Clarke <jonathan@phillipoux.net>]

Hi,

On 22/06/2010 04:24, Nick Urbanik wrote:
> Dear Folks,
>
> With slurpd, copying a tree from one slave to another was like this:
> 1. stop slapd on both slaves.
> 2. netcat the directory across from one slave to the other.
> 3. stop slurpd on master
> 4. edit slurpd.status to make the time and replication number match
> by copying that for the source to that for the destination slave.
> 5. start everything back up.
>
> My question with syncrepl is:
>
> How do I copy the database for a tree from one consumer to another
> consumer (of the same producer) so that the newly copied replica knows
> where its replication should continue from?

In general, I avoid copying database files directly (I assume you're 
talking about the BDB files from a bdb/hdb backend).

However, it can be useful to copy over a LDIF file output by slapcat to 
speed up a consumer's initial synchronization with it's provider.

> Is the state for replication of the database stored in the contextCSN
> of the suffix entry?

Yes.

> If so, does that mean that with syncrepl, the above operation is
> reduced to the following three steps?
>
> 1. Stop slapd on both consumers.
> 2. Netcat the database from one to the other.
> 3. start both consumers.

That would probably work, yes.

I would instead recommend doing a slapcat on one consumer, copying over 
the file to second consumer, slapadd, then starting that consumer.

Jonathan
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Jonathan Clarke - jonathan@phillipoux.net
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Ldap Synchronization Connector (LSC) - http://lsc-project.org
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