On 13-9-2018 23:05, hugo.larson@... [firebird-support] wrote:

>
>
>> Do you mean you increase the back up level continuously?
>
> Yes
> My strategy is:
> Level 0 once.
> Increment level continuously every third Day.
>
> Works fine most of the times. Sometimes I get mysteriously the following
> error even though my logs tell that the order is right. I suspect there
> might be an old bug in NBAK in version i'm using 2.5.3.26778
>
> Invalid level 6 of incremental backup file:
> /home/firebird/store_fdb/2058/unzip_nbak/N0006_201807
> 29_1000.nbk, expected 1 [SQLState:HY000, ISC error code:335544382]
>
> Whe n this happen I just step back one level.
>
> NBAK backup is done with Jaybird.
>
> It would be really cool if N backups can be reused when we migrate to FB4.

That is not possible given the ODS change between FB3 and FB4.

Mark
--
Mark Rotteveel