When doing ADC VPX instance upgrade right from the SVM itself by right clicking the instance and selecting the build to which we want to upgrade. It fails after sometime and upgrade is not successful.

a) Login to the ADC VPX which failed to upgrade.
b) Go to shell mode and type the below command to see if the VPX has enough space available:

# df -h

c) In some cases if there is no enough space available on the VPX then the upgrade will fail.

d) If you see /var almost full in above command output, then free up some space so that upgrade can be done.

Look for /var/tmp/support directory for any support files taking the place. Also look for any crash or core files in /var/crash and /var/core folders and free up the space. Then try again to upgrade the VPX from SVM.

Refer to Citrix Documentation for detailed information: https://docs.citrix.com/en-us/citrix-adc/12-1/upgrade-downgrade-citrix-adc-appliance/troubleshooting.html

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Problem Cause

The issue is caused due to /var getting full which causes upgrade to fail.

When doing VPX instance upgrade right from the SDX SVM itself by right clicking the instance, it fails with an error. But doesn't exactly tells about what caused it to fail.