[Dovecot] Mail deduplication

[Charles Marcus]

On 2013-05-06 11:23 AM, Timo Sirainen <tss at iki.fi> wrote:
> On 6.5.2013, at 18.03, Charles Marcus <CMarcus at Media-Brokers.com> wrote:
>> Hey Timo - so, how will rsync be affected as a backup app? Will it 
>> maintain the deduped state in the backup target?

> Ideally you'd rsync from a filesystem snapshot instead of from live filesystem, otherwise the link counts might go wrong. And you need to use the -H parameter for rsync so it preserves hard links.

Understood, and figured as much - I'll be using lvm snapshots and 
rsnapshot (which keeps backups using hardlinks against previous backup 
snapshots, making it easy to keep backups going back years without 
taking up much more additional space.

Thanks,

-- 

Best regards,

Charles