Re: [BackupPC-users] Prepare for the worst, Howto backup the backuppc-se

AOE is quite simple. on ubuntu you can build a target like this

have a spare drive/partition/lvm!
sudo apt-get install vblade
vblade 0 0 eth0 /dev/sdc

thats it! now you are exporting a device on shelf 0, slot 0 (vblade 0 0)

on another machine
sudo apt-get install aoetools
modprobe aoe

you should now see /dev/etherd/e0.0 (this is the shelf 0, slot 0 drive from the other machine)

done!

a 'client' can see any aoe device on the network, without even having an IP address. IP is not used at all on aoe.

now on the 'client' machine, you can
"mkfs.ext3 /dev/etherd/e0.0 && mkdir /mnt/e0.0 && mount /dev/etherd/e0.0 /mnt/e0.0"

or better yet, add it to your raid array with mdadm.

On Sun, Jul 13, 2008 at 6:44 PM, Kurt Tunkko <kurt.tunko AT web DOT de> wrote:

Hello Dan & ...,

back from a 2 weeks vacation time to implemend your ideas about how to
backup the backuppc-server.

I'll try to add a 3rd harddrive to my RAID1-setup.

As far I understand you also mentioned two other possibilities:

1) builting a iSCSI-device by using another pc. I didn't know that this
is possible, but doing while browsing the web, I found:

"Don't put your iSCSI SAN on your regular IP network, either. There's
plenty of traffic running over that, and iSCSI is bandwidth-intensive.
Also consider whether your servers have enough CPU power to handle
iSCSI. Unwrapping and reassembling iSCSI packets can take a lot of CPU
time."

Since I didn't found a beginner-friendly step-by-step guide, I think I
have to wait until I gain more experience in order to try to setup an
own iSCSI-device.

2) AoE - ATA-over-Ethernet.
Sounds really interesting but also seems to be harder to implement than
adding another disk to my raid-system.

> Maybe I'm crazy, I don't know!

uhm .. maybe you just know much much more than I know about linux,
server-administration :-)

As soon as I have succesfully added more disks to my raid I'll update
the wiki and will also your ideas (iSCSI, AoE).

- Kurt

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Re: [BackupPC-users] Prepare for the worst, Howto backup the backuppc-server