Hello
2018-02-23 9:32 GMT+01:00 Fourie Joubert <fourie.joub...@up.ac.za>:
> Hi Folks
>
> I know similar topics have been addressed before in many posts, but none
> of them provide me with a workable solution…
>
> - We are backing up fairly large volumes: 250TB up to 1.5 PB over 40Gbps
> Infiniband
> - Bacula backups up to a target PB-scale ZFS pool
> - The volumes created are each 100GB in size
>
> We are having trouble getting the first full backups to finish
> successfully in one job (due to various IT issues that we do not have
> control over).
>
> The result is that although the backups are configured as incrementals,
> there is never a successful full backup in a single job, and the next job
> starts backing up everything all over again. This happens over and over so
> we never get a backup of all the content and we fill up our ZFS backup
> target pool with all the uncompleted attempts.
>
> Is there a way to prevent this, so that despite a backup job being flagged
> as unsuccessfully terminated, the next session will be forced to only be
> incremental?
>
As others already pointed out in this thread you are requesting an
impossible as incremental backup in any real backup software require a
successful full. But you can resolve from this situation in the following
ways:
- resolve all the issues which prevents your full to complete successfully
- restart the failed full job which should backup all remaining data only -
it is possible when a full job finishes as incomplete and not failed one.
You can repeat this as long as all data will be archived without problem
- use a client side deduplication (available in BEE only) which should
backup the data unavailable on backup server until all data will be
archived successfully
- split your backup jobs into a number of smaller ones which has a higher
level of probability to complete with success, you can run all this jobs
concurrently to achieve a required throughput
best regards
--
Radosław Korzeniewski
rados...@korzeniewski.net
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