I used kvblade, AoE server as kernel module.
I was impressed by it's greater performance.
But I stopped to use AoE, because it didn't work with kernel-xen-2.6.{19,20}.
It cause panic or reset immediately after boot.
The last kernel-xen can handle AoE is kernel-xen-2.6.18-1.2869.fc6.
I have not tried AoE on kernel-xen in rawhide.
Andy Burns wrote:
> I'm considering using AoE with Xen, my setup would be vblade on one
> FC7 storage server with mdraid over 6x SATA disks, and two xen hosts
> with FC7 using aoe+aoetools, using eth1 on all servers to a separate
> VLAN for SAN traffic, eth0 used for normal LAN traffic, all gigabit.
>
> I'm wondering does it make more sense to slice up /dev/md1 on the
> storage server with LVM and then serve multiple /dev/VGxx/LVxx block
> devices with individual vblade processes using their own AoE
> shelf/slot ID to individual dom0 (or direct to AoE in domU)?
>
> Or to serve the whole /dev/md1 using a single vblade process on the
> storage server and then use CLVM or GFS on each xen dom0 to slice up a
> single /dev/etherd/e0.0 in a coordinated way?
>
> My thoughts are that using a cluster filesystem would save the hassle
> of starting/stopping vblade processes whenever resizing LVs and any
> associated confusion of shelf/slot IDs
>
> But I'm not sure of the overhead of cluster filesystems, does DLM only
> get involved for maintenance operations on LVs, or for all I/O
> activity?
>
> Thoughts welcome from anyone using (or having attempted) either approach
> ...
>
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