ATAOverEthernet

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||<tablestyle="float:right; font-size: 0.9em; width:40%; background:#F1F1ED; margin: 0 0 1em 1em;" style="padding:0.5em;">'''Contents'''[[BR]][[TableOfContents]]||

= Introduction =

There is now a kernel module (aoe), tools (aoetools) and server
software (vblade) whoch allows anyone to set up an ATA over Ethernet
storage network... and it is very easy to do in Ubuntu (currently Dapper
6.06 LTS).

WARNING: These commands need to be run with root privileges (sudo -i).
Do this at your own risk.

= Required Packages =

With the 'universe' repository enabled..

On the Ubuntu host that you wish to be the disk server:
{{{
  (server)# apt-get install vblade
}}}
On the Ubuntu host that you wish to mount the disk on:
{{{
  (client)# apt-get install aoe-tools
}}}

= To Configure =
To test that everything is working correctly, we created and used a
1 Mbyte file (vblade0). Any other block device or file could be used.

On the server:
{{{
  (server)# dd if=/dev/zero of=vblade0 count=1 bs=1M
  (server)# vblade 1 1 eth0 vblade0
  ioctl returned 0
  1048576 bytes
  pid 25000: e1.1, 2048 sectors
}}}
The deamon ('vbladed') could be used instead of 'vblade', which detaches the process from the console and send log messages to the system logs.

On the client:
{{{
  (client)# sys_dir=/sys aoe-stat
          e1.1 0.001GB eth0 up
}}}

= Using AoE =
Insert the module into the linux kernel.
{{{
  (client)# modprobe aoe
}}}
This can automatically be performed at startup, by entering a line into the
/etc/modules file.

The device and directory automatially get created when the aoe module
is inserted into the kernel.
{{{
  (client)# aoe-interfaces eth0
  (client)# aoe-discover
}}}
The block device is then located in /dev/etherd/e1.1 and can be
treated like any other block device.

Create a filesystem:
{{{
  (client)# mke2fs /dev/etherd/e1.1
}}}
Create a mount point and mount the file system:
{{{
  (client)# mkdir /var/tmp/mnt
  (client)# mount /dev/etherd/e1.1 /var/tmp/mnt
}}}
This can be made to automatically mount on reboot, by entering a configuration
line in /etc/fstab (untested).

= References =

 * http://www.coraid.com/support/linux/EtherDrive-2.6-HOWTO.html
 * http://en.wikipedia.org/wiki/ATA_over_Ethernet
----
CategoryDocumentation		 #REFRESH 0 https://help.ubuntu.com/community/ATAOverEthernet

ATAOverEthernet (last edited 2008-08-06 16:59:42 by localhost)