File Copy Issue: Attempted to copy JUNOS from the main Routing Engine to RE1.

Encountered a "No space left on device" error, preventing the transfer.

rcp: /var/tmp/junos-install-mx-x86-64-16.1R6-S1.1.tgz: truncate: No space left on device

error: put-file failed

error: could not send local copy of file

When customer attempted to cleanup storage using below CLIs, there was no much files to delete & still space was not available.

request system storage cleanup re<0 or 1> dry-run

request system storage cleanup re<0 or 1>

OR

request vmhost storage cleanup re<0 or 1> dry-run

request vmhost storage cleanup re<0 or 1>

This could be due to file system corruption or not releasing the space.

The best option available to us here, is to go for USB upgrade for the RE, using KB27369 [juniper.net].

Next option, which is not always recommended, is to replace the RE.