Hi everyone, I'm following this tutorial: http://www.howtoforge.com/xen-cluster-management-with-ganeti-on-debian-lenny-p3 i set everything as the tutorial showed... hosts, interfaces, drbd.. ALL. An error occurred after using this command: gnt-instance add -t drbd -n slave.com:master.com -o debootstrap -s 3g --swap-size 128 -m 256 --kernel /boot/vmlinuz-`uname -r` --ip 192.168.0.106 webserver.com and was supposed to be so: * creating instance disks... adding instance inst1.example.com to cluster config - INFO: Waiting for instance inst1.example.com to sync disks. - INFO: - device sda: 3.90% done, 971 estimated seconds remaining - INFO: - device sdb: 17.00% done, 42 estimated seconds remaining - INFO: - device sda: 9.00% done, 746 estimated seconds remaining - INFO: - device sdb: 100.00% done, 0 estimated seconds remaining - INFO: - device sda: 9.30% done, 727 estimated seconds remaining - INFO: - device sda: 22.10% done, 786 estimated seconds remaining - INFO: - device sda: 35.10% done, 224 estimated seconds remaining - INFO: - device sda: 48.00% done, 205 estimated seconds remaining - INFO: - device sda: 61.00% done, 183 estimated seconds remaining - INFO: - device sda: 73.90% done, 120 estimated seconds remaining - INFO: - device sda: 86.90% done, 36 estimated seconds remaining - INFO: - device sda: 94.80% done, 344 estimated seconds remaining - INFO: Instance inst1.example.com's disks are in sync. creating os for instance inst1.example.com on node node2.example.com * running the instance OS create scripts... * starting instance... master.com:~# BUT, i have this problem: * creating instance disks... adding instance webserver.com to cluster config - INFO: Waiting for instance webserver.com to sync disks. - INFO: - device sda: 3.90% done, 971 estimated seconds remaining - INFO: - device sdb: 17.00% done, 42 estimated seconds remaining - INFO: - device sda: 9.00% done, 746 estimated seconds remaining - INFO: - device sdb: 100.00% done, 0 estimated seconds remaining - INFO: - device sda: 9.30% done, 727 estimated seconds remaining - INFO: - device sda: 22.10% done, 786 estimated seconds remaining - INFO: - device sda: 35.10% done, 224 estimated seconds remaining - INFO: - device sda: 48.00% done, 205 estimated seconds remaining - INFO: - device sda: 61.00% done, 183 estimated seconds remaining - INFO: - device sda: 73.90% done, 120 estimated seconds remaining - INFO: - device sda: 86.90% done, 36 estimated seconds remaining - INFO: - device sda: 94.80% done, 344 estimated seconds remaining - INFO: Instance webserver.com's disks are in sync. creating os for instance webserver.com on node slave.com * running the instance OS create scripts... * Failure: command execution error: * could not add os for instance webserver.com on node slave.com master.com:~# Anyone help me? I am apply the Ganet in my completion of course work (TCC). Thanks all. Hugs