Failure to communicate with kernel device-mapper driver.

[Donald Braman]

I'm having trouble creating an image of my instance.  I updated & installed R Studio & iPython. Any advice? 

dbraman@dm:~$ sudo -i gcimagebundle -d /dev/sda -o /tmp/ --log_file=/tmp/abc.log
Starting logging in /tmp/abc.log
found platform Debian
File System: ext4
Disk Size: 10737418240 bytes
Resolved /dev/sda to /dev/sda
exclude list: (/etc/ssh/.host_key_regenerated, 0:0:0) (/dev, 0:1:0) (/proc, 0:1:0) (/run, 0:1:1) (/selinux, 0:0:0) (/tmp, 0:1:0) (/sys, 0:1:0) (/var/lib/google/per-instance, 0:1:0) (/var/lock, 0:1:1) (/var/log, 0:1:1) (/var/run, 0:1:1)
ignoring mounts /sys /proc /dev /dev/pts /run /run/lock /run/shm
overwrite list =
Root disk on /: f_bsize=4096 f_blocks=2580046 f_bfree=1694417. Estimated space needed is 5078550937 (may be overestimated).
Free disk space for /tmp/tmppomIKI is 6940332032 bytes.
Initializing disk file
Error while running ['kpartx', '-a', '-v', '-s', '/tmp/tmppomIKI/disk.raw'] return_code = 1
stdout=
stderr=/dev/mapper/control: open failed: No such device
Failure to communicate with kernel device-mapper driver.
Check that device-mapper is available in the kernel.
device mapper prerequisites not met
Traceback (most recent call last):
File "/usr/bin/gcimagebundle", line 28, in <module>
main()
File "/usr/bin/gcimagebundle", line 24, in main
imagebundle.main()
File "/usr/lib/python2.7/dist-packages/gcimagebundlelib/imagebundle.py", line 211, in main
(fs_size, digest) = bundle.Bundleup()
File "/usr/lib/python2.7/dist-packages/gcimagebundlelib/block_disk.py", line 136, in Bundleup
partition_start, uuid = self._InitializeDiskFileFromDevice(disk_file_path)
File "/usr/lib/python2.7/dist-packages/gcimagebundlelib/block_disk.py", line 91, in _InitializeDiskFileFromDevice
with utils.LoadDiskImage(file_path) as devices:
File "/usr/lib/python2.7/dist-packages/gcimagebundlelib/utils.py", line 54, in __enter__
output = RunCommand(kpartx_cmd)
File "/usr/lib/python2.7/dist-packages/gcimagebundlelib/utils.py", line 364, in RunCommand
cmd=command)
subprocess.CalledProcessError: Command '['kpartx', '-a', '-v', '-s', '/tmp/tmppomIKI/disk.raw']' returned non-zero exit status 1

[Donald Braman]

Worked after reboot. Durrrrr.