Re: [Xen-users] Bacula + DomUs and LTO Tapes

[Nico Kadel-Garcia <nkadel@xxxxxxxxx>]

JC Júnior wrote:
> Hi Friends !!!
>
>        I have one xen server (debian etch) already in production; 
> there are samba, squid, 2 ldap servers , apache2, postgresql and 
> others, 8 virtual machines at total in a hardware raid5. Now I need a 
> backup system, and i will use bacula with a dell ultrium3 LTO.
>       I would like to know if there are problems with i/o?  How can I 
> connect a DomU directly to /dev/st0 of Dom0 ??  Its a very good 
> machine ( 4xXeon 4GB Ram ) , but i'm afraid to run bacula-fd in all 
> DomUs and bacula-dir and bacula-sd in a DomU too, and get I/O 
> problems, or may crash xen , corrupt data... whatever....
>
> Someone Can help-me??? any help will be good.....
You don't if you want to throw away half your performance, roughly. The 
backup server should really reside on Dom0, where things like disk I/O 
are so critical, lest you double your backup times. Puting it on Dom0 
also lets you back up or image DomU partitions more directly, even by 
doing things like LVM snapshots.
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