Hello,
I just noticed that I could not start VM with HD on iscsi/lvm storage + the -fda argument.
The command :
/usr/bin/kvm -id 100 -chardev socket,id=qmp,path=/var/run/qemu-server/100.qmp,server,nowait -mon chardev=qmp,mode=control -vnc unix:/var/run/qemu-server/100.vnc,x509,password...