[Libguestfs] febootstrap: no ext2 root device found

Hello- I've recently upgraded from OEL 6.4 to OEL 6.8. Infiniband Hardware installed on the server prevents me from upgrading the OS version any higher. Kernel Version: Oracle Linux Server Red Hat Compatible Kernel (2.6.32-642.el6.x86_64) Since the upgrade, there have been problems with libguestfs-tools hanging, then timing out. I'd like to use the newest version of libguestfs-tools if possible, but all versions above "1.16.34-2.el6" that have been tested time out with the same error. Running "libguestfs-test-tool" with Kernel (2.6.32-642.el6.x86_64); the results are as follows: libguestfs-tools.x86_64 1:1.16.34-2.el6 public_ol6_u4_base (works) libguestfs-tools.x86_64 1:1.20.11-2.el6 public_ol6_u5_base (times out with error "febootstrap: no ext2 root device found") libguestfs-tools.x86_64 1:1.20.11-17.el6 public_ol6_u8_base (times out with error "febootstrap: no ext2 root device found") libguestfs-tools.x86_64 1:1.20.11-20.el6 public_ol6_latest (times out with error "febootstrap: no ext2 root device found") I can provide the output of the tests if required. Any suggestions are greatly appreciated! Thanks.