On 08/20/2009 05:46 PM, Coert Waagmeester wrote:

Xen DomU

DRBD

LVM Volume

RAID 1

this makes no sense, you are loosing about 12% of i/o capability here - even before hitting drbd, and then taking another hit on whatever drbd brings in ( depending on how its setup, even on a gigabit link that drbd load factor can be upto another 15 - 20%, or as low as 2 - 5% )

What I first wanted to do was:

DomU | DRBD

LVM Volume

RAID 1

Again, not very clear. Do onething, post some real stuff, eg the proc status files for drbd and pvdisplay,gvdisplay and the raid status files ( whatever raid setup you are using ).