Re: Backup and bdb-logfile removal

[Gavin Henry <ghenry@suretecsystems.com>]

Peter Mogensen wrote:
> Hi,
>
> I've been going all documentation I can find (FAQ/bdb-docs..) and I 
> still have some doubt whether I understand this correctly.
>
> I run frequent dumps with slapcat to backup the database, but I still 
> need to cleanup the BDB logfiles and it would also be nice get faster 
> back online after a crash than you can from LDIF.
>
> So I understand how to create a hot backup by copying the database files 
> (db_archive -s) and then the log files (db_archive -l) and runing 
> db_recover -c.
>
> I can see that I can delete unused log files (db_archive [no options]) 
> from the backup. But when is it safe to remove log files from the active 
> environment?

Let auto-archive do that for you.

> db_archive on the active environment lists fewer files than on the 
> backup (predictable enough).
>
> The docs say that running db_archive -d can make recovery impossible.  
> OK... so I don't do that.
> But what is required of my hot backup snapshot to know that I can delete 
> log files from the active environment? (and which?) and still not 
> influence the posibility for recovery.
>
> Could anyone list a step-by-step procedure to create a snapshot for 
> backup and prune the log files from the active environment?
>
> btw: openldap 2.3.30/ bdb 4.2.52 (debian) ... but I guess that's not so 
> important here.
>
> regards,
> Peter
>
> PS: I expect still to do  occasional  slapcats just as an extra security 
> measure.


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Kind Regards,

Gavin Henry.
Managing Director.

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