Re: [BackupPC-users] Backup PC - Out of memory , BackupPC_dump killed

[Arnold K. <ar...@ar...>]

Hi,

Am 2013-08-13 14:24, schrieb Florian Streibelt:
> we are trying to backup out mailserver with lots and lots of small
> files using backuppc.
> The backup server already has 8 GB of RAM, but this seems not to be
> enough - anything we can do besides comitting more RAM to the machine?

You are probably using rsync as transfer-method. Which makes perfectly 
sense, since you want to backup many files that don't change, so there 
is no need to transfer all files as you would with tar. Unfortunately 
that means that both client and server have to built the while fs-tree 
with checksums in memory...

Two solutions:
  - use tar as transfer-method. Shouldn't hurt much as on incrementals 
tar only transfers files that are newer and normal mails aren't touched 
again after initial storage.
  - define two or more "hosts" in backuppc that backup different parts 
of your mail-store. Then you can also shift full-backups so that the 
load distributes over the days.

Have fun,

Arnold