2 nodes cluster with drbd with 2 resources - possible?

Hi,

I already configured a 2 nodes cluster (drbd) with a quorum disk and this works flawlessly. But I am having difficulty with the following configuration...

I would like to optimize the hardware usage. Here is what I have in mind.

Hardware descr:
2 servers : 32GB ram, 4 volumes, 32 cores each.

I configured 2 drbd (I installed v 8.4.2 because multiple volumes) resources on lvm. Here are my files r1.res and r2.res. r1 has 3 volumes and r2 has one.

resource r1 {
protocol C;
startup {
wfc-timeout 15;
degr-wfc-timeout 60;
become-primary-on both;
}
net {
cram-hmac-alg sha1;
shared-secret "my-secret";
allow-two-primaries;
after-sb-0pri discard-zero-changes;
after-sb-1pri discard-secondary;
after-sb-2pri disconnect;
}
volume 0 {
device /dev/drbd0;
disk /dev/sdb1;
meta-disk internal;
}
volume 1 {
device /dev/drbd1;
disk /dev/sdc1;
meta-disk internal;
}
volume 2 {
device /dev/drbd2;
disk /dev/sdd1;
meta-disk internal;
}
on vmlidi1 {
address 10.0.7.105:7788;
}
on vmlidi2 {
address 10.0.7.106:7788;
}
}

resource r2 {
protocol C;
startup {
wfc-timeout 15;
degr-wfc-timeout 60;
become-primary-on both;
}
handlers {
}
net {
cram-hmac-alg sha1;
shared-secret "my-secret";
allow-two-primaries;
after-sb-0pri discard-zero-changes;
after-sb-1pri discard-secondary;
after-sb-2pri disconnect;
}
volume 0 {
device /dev/drbd3;
disk /dev/sdb2;
meta-disk internal;
}
on vmlidi1 {
address 10.0.7.105:7789;
}
on vmlidi2 {
address 10.0.7.106:7789;
}
}



Is it possible to activate a ha cluster with this setup? Keep in mind that I would like to have vm running on both servers (on the volumes managed by r1 for one and on the volume managed by r2 on the other one). If one server is down, than all the vm would be running on the same server. Doing so would allow to use more of the cores and ram of those 2 servers.

Thanks for you help!

Patrice