Re: [BackupPC-users] backing on two raid arrays

[Martin L. <ml0...@le...>]

Gilles Guiot wrote:
> Hello Everybody
> I'm using backuppc 3.1.0 on a debian distro.
> My backup server has two raid 1 arrays
> I have been backing up some servers on the first array
> I need to backup other servers but not enough space on the first array /dev/sda1. 
> I would like to use the same backuppc install and backup other servers on the second array : dev/sdb
> Is it possible and if yes, how shall one proceed ? 


Hi,

No it is not possible. The FAQ at 
<http://backuppc.sourceforge.net/faq/BackupPC.html#what_type_of_storage_space_do_i_need> 
says:

> BackupPC uses hardlinks to pool files common to different backups. Therefore BackupPC's data store (__TOPDIR__) must point to a single file system that supports hardlinks. You cannot split this file system with multiple mount points or using symbolic links to point a sub-directory to a different file system (it is ok to use a single symbolic link at the top-level directory (__TOPDIR__) to point the entire data store somewhere else). You can of course use any kind of RAID system or logical volume manager that combines the capacity of multiple disks into a single, larger, file system. Such approaches have the advantage that the file system can be expanded without having to copy it.

Best regards,
/Martin