Hi Thierry, When teuthology runs ansible on a newly created host as: /home/ubuntu/teuthology/virtualenv/bin/python /home/ubuntu/teuthology/virtualenv/bin/ansible-playbook -v --extra-vars {"ansible_ssh_user": "ubuntu"} -i /etc/ansible/hosts --limit target010011010028.teuthology /home/ubuntu/src/ceph-cm-ansible_master/cephlab.yml it stalls because there are too many hosts in the inventory (65537) and newfstatat(AT_FDCWD, "/etc/ansible/hosts/host_vars/target010011203193.teuthology", 0x7fc8f1a4f0, AT_SYMLINK_NOFOLLOW) = -1 ENOENT (No such file or directory) newfstatat(AT_FDCWD, "/etc/ansible/hosts/host_vars/target010011203193.teuthology.yml", 0x7fc8f1a4f0, AT_SYMLINK_NOFOLLOW) = -1 ENOENT (No such file or directory) newfstatat(AT_FDCWD, "/etc/ansible/hosts/host_vars/target010011203193.teuthology.yaml", 0x7fc8f1a4f0, AT_SYMLINK_NOFOLLOW) = -1 ENOENT (No such file or directory) newfstatat(AT_FDCWD, "/etc/ansible/hosts/host_vars/target010011203193.teuthology.json", 0x7fc8f1a4f0, AT_SYMLINK_NOFOLLOW) = -1 ENOENT (No such file or directory) newfstatat(AT_FDCWD, "/etc/ansible/hosts/", {st_mode=S_IFDIR|0755, st_size=4096, ...}, 0) = 0 newfstatat(AT_FDCWD, "/etc/ansible/hosts", {st_mode=S_IFDIR|0755, st_size=4096, ...}, 0) = 0 newfstatat(AT_FDCWD, "/etc/ansible/hosts/host_vars/target010011203194.teuthology", 0x7fc8f1a4f0, AT_SYMLINK_NOFOLLOW) = -1 ENOENT (No such file or directory) newfstatat(AT_FDCWD, "/etc/ansible/hosts/host_vars/target010011203194.teuthology.yml", 0x7fc8f1a4f0, AT_SYMLINK_NOFOLLOW) = -1 ENOENT (No such file or directory) newfstatat(AT_FDCWD, "/etc/ansible/hosts/host_vars/target010011203194.teuthology.yaml", 0x7fc8f1a4f0, AT_SYMLINK_NOFOLLOW) = -1 ENOENT (No such file or directory) newfstatat(AT_FDCWD, "/etc/ansible/hosts/host_vars/target010011203194.teuthology.json", 0x7fc8f1a4f0, AT_SYMLINK_NOFOLLOW) = -1 ENOENT (No such file or directory) takes forever. This is running on an ARMv8 virtual machine: Cheers -- Loïc Dachary, Artisan Logiciel Libre -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html