Enabling compression on the existing setup

[Martin Prochazka]

Hi,

i am validating possibility to enable compression for space saving (currently 24 TB data). 

Version 25.03 Community, Always Incremental mode. Turning it on the bareos (storage daemon) side.

- what will happen if compression is enabled - will bareos still works with previous uncompressed volumes and just new volumes will be compressed? 

- opposite scenario, disabling compression if there will be issue - will bareos process combination plain + compressed + plain volumes?

Thanks.

[Bruno Friedmann (bruno-at-bareos)]

Compression is per block and if is detected, so if you do compression on the storage, it will work transparently (well more cpu / ram etc .. but you get it).

Also if a block is compressed, you can also send it compressed back to the FD which do the uncompression.

Just be sure to have SD and FD supporting the same compression algo.

Regards