On Thu Oct 15 10:56:55 EDT 2009, ecas...@coraid.com wrote:
...
However, most of the problems I can think of with using md on two
initiators at the same time over a common set of AoE targets have to
do with failing individual components, or with the consistency of the
state of the RAID itself,
On Oct 15, 2009, at 8:19 AM, Ed Cashin wrote:
What am I saying? The main problem is the page cache. The I/O for
the components of the RAID 0 will go through the page cache on each of
the two AoE initiators, and without some way for the two hosts to make
sure that the page cache contents
On Oct 15, 2009, at 9:55 AM, Matthew Ingersoll wrote:
On Oct 15, 2009, at 8:19 AM, Ed Cashin wrote:
What am I saying? The main problem is the page cache. The I/O for
the components of the RAID 0 will go through the page cache on each
of
the two AoE initiators, and without some way for
On Thu Oct 15 12:56:00 EDT 2009, ma...@digitalwest.net wrote:
...
At what layer(s) does page cache come into play? I know the gist of
how it functions but not the dirty details. I thought it only came
into play when using a filesystem?
For example, if the controllers shared a block
On Thu, Oct 15, 2009 at 09:42:15AM -0700, Matthew Ingersoll wrote:
Thanks for the response Ed - I'll follow up on the linux raid list.
What are your thoughts on a cluster aware LVM (CLVM) for striping and
removing the md devices all together?
If you learn more about that, please get back
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
