Symptom:When performing an L2 upgrade to CUCM 9.1(1) from an earlier version of CUCM,
the upgrade is stalled with the following message: "insufficient disk
space.please use RTMT to clean up common partitions.."
If the same symptom is observed during an upgrade to 10.0.1, Please refer the "Pre Upgrade Tasks" section in the Upgrade/Install guide.
Conditions:L2 upgrade when the amount of disk space (in absolute terms and not in terms
of percentage) is not enough with 9.1 CUCM starts taking in to account the
disk space required for TFTP data ie., 9.1 upgrade needs more space than
previous L2 upgrades.
Workaround:When upgrading Cisco Unified Communications Manager to 9.1(1) version, the
upgrade may fail due to insufficient disk space. You will see the following
error message:
There is not enough disk space in the common partition to perform the
upgrade. For steps to resolve this condition please refer to the Cisco
Unified Communications Manager 9.1(1) Release Notes or view defect
CSCuc63312 in Bug Toolkit on cisco.com.
To reduce disk space utilization during an upgrade, follow this procedure.
Step 1 Reduce the amount of traces on the system by lowering the low and high
watermarks in the Cisco Log Partition Monitoring Tool. The low watermark is
adjusted by changing the properties of the LogPartitionLowWaterMarkExceeded
alert. The high watermark is adjusted by changing the properties of
the LogPartitionHighWaterMarkExceeded alert.
For more information about the Cisco Log Partition Monitoring Tool, see the
Cisco Unified Real-Time Monitoring Tool Administration Guide.
Note: Following the upgrade, you must restore the high and low watermarks to
their original values in order to avoid premature purging of traces. The
default value for the high watermark is 85. The default value for the low
watermark is 80.
Step 2 If you still get the error message, install the COP file named
ciscocm.free_common_space_v1.0.cop.sgn that you can find on Cisco Connection
Online under Cisco Unified Communications Manager Version 9.1 > Unified
Communications Manager/ CallManager/Cisco Unity Connection Utilities > COP-
Files. This COP file frees disk space to allow the upgrade to proceed.
Note: You must perform an upgrade after applying the COP file.
Caution:
You will not be able to switch to the previous version after the COP file is
installed. For example, if you are upgrading from Cisco Unified
Communications Manager 9.0(1) to Cisco Unified Communications Manager 9.1(1)
and the previous version is Cisco Unified Communications Manager 8.6, the COP
file clears the space by removing the 8.6 version data that resides in the
common partition. So after you apply the COP file, you will not be able to
switch to the 8.6 version.
Attention:
If you are unable to perform the upgrade and continue to receive the error
message even after applying this COP file, it means that the amount of data
present on the running version does not leave adequate space for expanding
and executing the upgrade. In such a case, more space may be recovered by
removing unused device firmware from the TFTP path. In some cases having
sufficient space for an upgrade will require that you take a backup,
reinstall to a larger capacity disk or larger sized Open Virtual Appliance
(OVA), and restore. Contact Cisco Technical Assistance Center (TAC) if
further assistance is required.
