I'm testing an active/active setup that uses aoe and was hoping for
some feedback.
The basic design has a storage device that runs vladed (aoe-storage)
and an aoe initiator (controller) that creates a raid0 using mdadm
from the aoe devices. From there, lvm (clustered) slices out storage
for sharing block devices. I don't want to concentrate on the layers
above that (clustered file systems, etc) but mainly the active/active
portion of this interacting with raid0 (via md not lvm) and aoe.
Some diagrams that may help in understanding...
-----
"Physical" diagram:
(export network block devices [ iscsi, aoe, etc] )
-----------
/ \
active / \ active
+-------------+ +-------------+
| controller1 | | controller2 |
+-------------+ +-------------+
\ /
+---------+
|
+-------------+ +-------------+
| aoe-storage | --- drbd raid1 --- | secondary |
+-------------+ +-------------+
-----
Layer diagram:
+-----------------+
| (net block dev) | controller1/2
+-----------------+
| lvm2 clustered | controller1/2
+-----------------+
| md: linux-raid0 | controller1/2
+-----------------+
| aoe initiator | controller1/2
+-----------------+
| aoe target | aoe-storage
+-----------------+
--
Matth
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