Re: [BackupPC-users] Linux backups with rsync vs tar

[Carl W. S. <ch...@re...>]

On 08/31 02:53 , charlesboyo wrote:
> 1. since over 90% of the files change every day and "incremental" backups involve transferring the whole file to the BackupPC server, won't it make better sense to just run a full backup everyday?
> 2. from Pavel's questions, he observed that BackupPC is unable to recover from interrupted tar transfer. Such interruptions simply cannot happen in my case. Should I switch to tar? And in the unlikely event that the transferred does get interrupted, what mechanisms do I need to implement to resume/recover from the failure?


Tar can often give several times greater performance than rsync, if most of
the files are being transferred. In your case, I would suggest experimenting
with it and seeing how much of a difference it makes.

As for recovering from tar errors; I would think it just involves re-running
the backup.

As for how to make the change; just edit your per-host config file
(/etc/backupc/<hostname>.pl). I don't know how extensive the compatibility
problems are; some experimentation may be in order.

-- 
Carl Soderstrom
Systems Administrator
Real-Time Enterprises
www.real-time.com