Description

This article provides solution whenever the Mixed mode upgrade of the virtual chassis consisting of EX4300 and QFX5100 fails due to lack of storage on EX4300.

Symptoms

While upgrading the EX4300/QFX5100 mixed mode VC, the process fails due to lack of storage on EX4300. After checking on the EX4300 storage space, the available space is way below the required.

Solution

Upon confirming that there is nothing in "/var/tmp/" occupying much space, you should also check the directory "/tmp/" too. Note that if the EX4300 is assigned to member 2, you should use the command below: 
user@switch> file list fpc2:/tmp/

You might see some files named as below: 
.pkg2621.toc.jinstall-ex-4300-20.4R3-S6.3-signed
.pkg2621.toc.jinstall-ex-4300-20.4R3-S6.3-signed.err

Proceed to delete these files from the affected member EX4300: 
{master:0}
user@switch> file delete fpc2:/tmp/.pkg2621.toc.jinstall-ex-4300-20.4R3-S6.3-signed

{master:0}
user@switch> file delete fpc2:/tmp/.pkg2621.toc.jinstall-ex-4300-20.4R3-S6.3-signed.err

{master:0}
user@switch> file delete fpc2:/tmp/.pkg2860.toc.jinstall-ex-4300-20.4R3-S6.3-signed

{master:0}
user@switch> file delete fpc2:/tmp/.pkg2860.toc.jinstall-ex-4300-20.4R3-S6.3-signed.err

Then, you will see that the amount of available space for /var/ partition also increased. At this point, you may proceed with software upgrade. Another option that can help will be to skip the validation process during the upgrade, so the schema-cache folder won't be used. 
user@switch> request system software add set [/var/tmp/jinstall-ex-4600-21.4R3-S3-domestic-signed.tgz /var/tmp/jinstall-ex-4300-21.4R3-S3-domestic-signed.tgz] no-validate


Once the installation is completed, fully complete the process by rebooting the switches

user@switch> >request system reboot all-members at now

After the upgrade/reboot please verify the new Junos code on all Virtual Chassis members to confirm the successful upgrade by using following command: >show version

For further details on how to perform mixed-mode VC software upgrade, consult the article KB71198 [juniper.net].

Modification History

2024-09-14 : Article Created