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

[Jonas Björklund <jb@xxxxxx>]

Hello,

On Sat, 1 Sep 2007, 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....
Use pciback.hide in grub.conf for you SCSI card attached to your tape 
drive.
itle CentOS (2.6.18-8.1.4.el5xen)
        root (hd0,0)
        kernel /xen.gz-2.6.18-8.1.4.el5
        module /vmlinuz-2.6.18-8.1.4.el5xen ro root=LABEL=/ 
pciback.hide=(02:0b.0)
        module /initrd-2.6.18-8.1.4.el5xen.img

And then allow access to the PCI card in your domU configuration.

kernel = "domU-current"
memory = 256
name = "backup01"
vif = ['ip=192.168.1.2]
pci = [ '0000:02:0b.0' ]
dhcp = "dhcp"
disk = ['phy:/dev/vg/disk01,sda1,w', 'phy:/dev/vg/disk01.swap,sda2,w']
root = "/dev/sda1 ro"

/Jonas

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